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Sato H, Kawabata H, Iwamoto H, Okada T, Fujibayashi S, Takahashi K, Kitano Y, Goto T, Mizukami Y, Okumura T, Fujiya M. New gel immersion endoscopic ultrasonography technique for accurate periampullary evaluation. Surg Endosc 2024; 38:2297-2304. [PMID: 38499782 DOI: 10.1007/s00464-024-10762-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 02/17/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Visualization of the pancreatobiliary junction is one of the challenges faced by endoscopic ultrasonography (EUS). The water-filling technique, which allows for the observation of the ampulla at a suitable distance by injecting water into the lumen of the duodenum, was used for this purpose. However, a new gel immersion technique has recently been introduced for visualizing the gastrointestinal tract. This study investigated the effectiveness of visualizing the pancreatobiliary junction in EUS by comparing both water filling and the new gel immersion technique in identical cases. METHODS The study ran from June to December 2021. Ten images from each technique were retrospectively compared by three independent researchers. The primary result of the study was the number of images depicting the "Pancreatic and Biliary Ducts Penetrating the Duodenal Muscularis Propria" (defined as Excellent observation) in each technique. The secondary outcome was defined as gel immersion technique's safety and impact on duodenal lumen distension. RESULTS Ten patients used the gel immersion technique. All patients underwent the water-filling technique first, followed by gel injection after the water was completely aspirated. The average number of pictures rated as "Excellent observation," which is the primary outcome, was significantly higher with the gel immersion technique than with water filling, and no adverse events were observed. The subanalysis revealed that both convex and radial echoendoscopes are equally effective at depicting the ampulla with the gel immersion technique. CONCLUSIONS The ability to depict the pancreatobiliary junction using the gel immersion technique is superior to that of the water-filling method, which may allow for a more detailed assessment of the ampullary region with both radial and convex echoendoscopes. This can be a useful EUS technique for diagnosing pancreaticobiliary maljunction or periampullary tumors.
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Affiliation(s)
- Hiroki Sato
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hidemasa Kawabata
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hidetaka Iwamoto
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Tetsuhiro Okada
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Shugo Fujibayashi
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Kenji Takahashi
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Yohei Kitano
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Takuma Goto
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Yusuke Mizukami
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Toshikatsu Okumura
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Mikihiro Fujiya
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan.
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Sato H, Fujii S, Okada T, Kawabata H, Kamikokura Y, Fujiya M. Small Insulinoma Followed-up as an Indolent Pancreatic Tumor: A Case Report. Intern Med 2024:3194-23. [PMID: 38432990 DOI: 10.2169/internalmedicine.3194-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
A woman in her 60s presented with a small pancreatic head tumor. Imaging studies revealed a 13-mm well-defined pancreatic head tumor. A neuroendocrine neoplasm was suspected, and the patient opted for observation at that time. After 8 months, the patient began experiencing sweating while fasting, and blood tests during regular follow-up visits showed hypoglycemia. Hypoglycemia was induced during fasting test. The tumor exhibited clear features of an insulinoma during follow-up observation. While small neuroendocrine neoplasms are often managed through observation, caution should be exercised regarding their transformation into functional neuroendocrine tumors.
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Affiliation(s)
- Hiroki Sato
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan
| | - Shozaburo Fujii
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan
| | - Tetsuhiro Okada
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan
| | - Hidemasa Kawabata
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan
| | - Yuki Kamikokura
- Department of Diagnostic Pathology, Asahikawa Medical University Hospital, Japan
| | - Mikihiro Fujiya
- Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan
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Okada T, Himura H, Nakajima Y, Sanpei A. Single-shot fast cinematic imaging during merging process of multiple electron filaments in electrostatic potential well. Rev Sci Instrum 2024; 95:033303. [PMID: 38477654 DOI: 10.1063/5.0181102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 02/20/2024] [Indexed: 03/14/2024]
Abstract
For the first time, details of the spatial and temporal acceptable evolution of the merging process of co-rotating electron vortices in a potential well are successfully captured using a "single-shot method" with a high temporal resolution of 10 µs. Four-electron filaments are trapped inside the Beam eXperiment-Upgrade linear trap [H. Himura, Nucl. Instrum. Methods Phys. Res. A 811, 100 (2016)] with a uniform axial magnetic field and co-axial multi-ring electrodes. Images of non-emitting electron filaments are captured using a high-speed camera with up to 1 000 000 fps, a microchannel plate, a fast-decay phosphor screen of which fluorescence duration is 0.15 µs, and a super fine metallic mesh with an open area ratio of 89%. Images captured every 10 µs clearly show the growth of multiple short-wave instabilities in the wing trailing electron vortices. The experimental methods and measurement techniques presented in this paper can contribute to revealing exactly how small vortices evolve into a large structure or turbulence in a potential well through complex processes.
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Affiliation(s)
- T Okada
- Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto 606-8585, Japan
| | - H Himura
- Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto 606-8585, Japan
| | - Y Nakajima
- Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto 606-8585, Japan
| | - A Sanpei
- Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto 606-8585, Japan
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Soda T, Tashiro Y, Koike S, Ikeuchi R, Okada T. Evaluation of incidence, predictive factors and treatment considerations for asymptomatic genitourinary granulomas after intravesical bacillus Calmette-Guérin therapy. Actas Urol Esp 2023; 47:317-326. [PMID: 37272323 DOI: 10.1016/j.acuroe.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 06/06/2023]
Abstract
INTRODUCTION AND OBJECTIVES Although the complications of intravesical BCG treatment are well described, asymptomatic genitourinary granulomas after BCG therapy have rarely been reported and management strategy for these conditions remains controversial. The objective of this study is to evaluate the incidence rate of asymptomatic genitourinary granuloma formation mimicking bladder cancer recurrence after intravesical bacillus Calmette-Guérin (BCG) therapy and to identify the diagnostic and treatment strategies according to patient conditions. PATIENTS AND METHODS A retrospective review was conducted on 162 patients who underwent intravesical BCG therapy. For patients who developed granulomas, we evaluated the time interval between BCG instillation and the development of granuloma, the presence of acid-fast bacteria on pathology specimens, culture/polymerase chain reaction results, management strategies for the lesions, and clinical outcomes. RESULTS Asymptomatic genitourinary masses developed in 14 patients, of whom 5 underwent histological examinations and all were confirmed to have granulomatous inflammation. The affected organs included the kidney, bladder, prostate, and penis. While four of the five patients did not receive treatment for their granulomas, one patient was administered antituberculous medication to prevent worsening of the lesion during the perioperative period of the scheduled cystoprostatectomy. None of the patients experienced worsening or recurrence of granulomatous lesions. Patients who developed asymptomatic masses (n = 14) were significantly younger than those who did not (p = 0.0076) and multivariate analysis also showed that younger age was independently associated with the development of clinically suspicious lesions (p = 0.032); however, none of the parameters were associated with histologically confirmed granuloma formation. CONCLUSIONS Genitourinary granulomas mimicking recurrence of carcinoma may develop in nearly 10% of patients after intravesical BCG therapy. Most patients can be managed without potentially toxic antituberculosis therapy.
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Affiliation(s)
- T Soda
- Department of Urology, Tazuke Kofukai Medical Research Institute Kitano Hospital, Osaka, Japan.
| | - Y Tashiro
- Department of Urology, Tazuke Kofukai Medical Research Institute Kitano Hospital, Osaka, Japan
| | - S Koike
- Department of Urology, Tazuke Kofukai Medical Research Institute Kitano Hospital, Osaka, Japan
| | - R Ikeuchi
- Department of Urology, Tazuke Kofukai Medical Research Institute Kitano Hospital, Osaka, Japan
| | - T Okada
- Department of Urology, Tazuke Kofukai Medical Research Institute Kitano Hospital, Osaka, Japan
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Goto T, Sato H, Fujibayashi S, Okada T, Hayashi A, Kawabata H, Yuzawa S, Ishitoya S, Yamashina M, Fujiya M. The Effectiveness of the Combination of Arterial Infusion Chemotherapy and Radiotherapy for Biliary Tract Cancer: A Prospective Pilot Study. Cancers (Basel) 2023; 15:cancers15092616. [PMID: 37174082 PMCID: PMC10177074 DOI: 10.3390/cancers15092616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
The standard treatment of unresectable biliary tract cancer (BTC) has shown an insufficient response rate (RR). Our retrospective setting revealed that a combination therapy consisting of intra-arterial chemotherapy plus radiation therapy (IAC + RT) provided a high RR and long-term survival benefits in unresectable BTC. This prospective study aimed to test the effectiveness and safety of IAC + RT as the first-line therapy. The regimen included one-shot IAC with cisplatin, 3-6 months of reservoir IAC (5-FU and cisplatin, q/week), and 50.4 Gy of external radiation. The primary endpoints include the RR, disease control rate, and adverse event rate. This study included seven patients with unresectable BTC without distant metastasis, with five cases classified as stage 4. RT was completed in all cases, and the median number of reservoir IAC sessions was 16. The RR was 57.1% for imaging and 71.4% for clinical assessment, and the disease control rate was 100%, indicating a high antitumor efficacy, which allowed two cases to be transferred to surgery. Five cases of leukopenia and neutropenia; four cases of thrombocytopenia; and two cases of hemoglobin depletion, pancreatic enzyme elevation, and cholangitis were observed, but with no treatment-related deaths. This study revealed a very high antitumor effect with IAC + RT for some unresectable BTC, and it could be useful for conversion therapy.
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Affiliation(s)
- Takuma Goto
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Hiroki Sato
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Shugo Fujibayashi
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Tetsuhiro Okada
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Akihiro Hayashi
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Hidemasa Kawabata
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Sayaka Yuzawa
- Department of Diagnostic Pathology, Asahikawa Medical University Hospital, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Syunta Ishitoya
- Department of Radiology, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Masaaki Yamashina
- Department of Radiology, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
| | - Mikihiro Fujiya
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan
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6
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Chiho M, Ono Y, Hayashi A, Takahashi K, Taniue K, Kakisaka R, Mori M, Ishii T, Sato H, Okada T, Kawabata H, Goto T, Tamamura N, Omori Y, Takahashi K, Katanuma A, Karasaki H, Liss AS, Mizukami Y. Multiplex digital PCR assay to detect multiple KRAS and GNAS mutations associated with pancreatic carcinogenesis from minimal specimen amounts. J Mol Diagn 2023; 25:367-377. [PMID: 36965665 DOI: 10.1016/j.jmoldx.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 02/14/2023] [Accepted: 02/24/2023] [Indexed: 03/27/2023] Open
Abstract
Digital PCR (dPCR) allows for highly sensitive quantification of low-frequency mutations and facilitates early detection of cancer. However, low throughput targeting of single hotspots in dPCR hinders variant specification when multiple probes are used. Here we developed a dPCR method to simultaneously identify major variants related to pancreatic carcinogenesis. Using a 2-D plot of droplet fluorescence under the optimized concentration of two fluorescent probe pools, we determined the absolute quantification of different KRAS and GNAS variants. Successful detection of the multiple driver mutations was verified in 24 surgically resected tumor samples from 19 patients and 22 FNA samples from patients with pancreatic ductal adenocarcinoma. Precise quantification of the variant allele frequency was optimized using template DNA at a concentration as low as 1-10 ng. Furthermore, amplicons targeting multiple hotspots were successfully enriched with fewer false positives using high-fidelity polymerase, allowing for the detection of various KRAS and GNAS mutations with high probability in small cell/tissue specimens. Using this target enrichment, mutations at a rate of 90% in small residual tissues, such as the FNA needle flush and microscopic lesions in resected specimens, have successfully been identified. The proposed method allows for low-cost and accurate detection of driver mutations to diagnose cancers, even with minimal tissue collection.
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Affiliation(s)
- Maeda Chiho
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan
| | - Yusuke Ono
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan; Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan.
| | - Akihiro Hayashi
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Kenji Takahashi
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Kenzui Taniue
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan; Isotope Science Center, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Rika Kakisaka
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan
| | - Miyuki Mori
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan
| | - Takahiro Ishii
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan
| | - Hiroki Sato
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan; Division of Gastrointestinal and Oncologic Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Tetsuhiro Okada
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Hidemasa Kawabata
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Takuma Goto
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Nobue Tamamura
- Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
| | - Yuko Omori
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan; Department of Investigative Pathology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Kuniyuki Takahashi
- Center for Gastroenterology, Teine Keijinkai Hospital, Sapporo, 006-0811, Japan
| | - Akio Katanuma
- Center for Gastroenterology, Teine Keijinkai Hospital, Sapporo, 006-0811, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan
| | - Andrew Scott Liss
- Division of Gastrointestinal and Oncologic Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Yusuke Mizukami
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, 065-0033, Japan; Department of Medicine, Asahikawa Medical University, Asahikawa, 078-8510, Japan
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7
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Nakamura T, Matsumoto M, Amano K, Enokido Y, Zolensky ME, Mikouchi T, Genda H, Tanaka S, Zolotov MY, Kurosawa K, Wakita S, Hyodo R, Nagano H, Nakashima D, Takahashi Y, Fujioka Y, Kikuiri M, Kagawa E, Matsuoka M, Brearley AJ, Tsuchiyama A, Uesugi M, Matsuno J, Kimura Y, Sato M, Milliken RE, Tatsumi E, Sugita S, Hiroi T, Kitazato K, Brownlee D, Joswiak DJ, Takahashi M, Ninomiya K, Takahashi T, Osawa T, Terada K, Brenker FE, Tkalcec BJ, Vincze L, Brunetto R, Aléon-Toppani A, Chan QHS, Roskosz M, Viennet JC, Beck P, Alp EE, Michikami T, Nagaashi Y, Tsuji T, Ino Y, Martinez J, Han J, Dolocan A, Bodnar RJ, Tanaka M, Yoshida H, Sugiyama K, King AJ, Fukushi K, Suga H, Yamashita S, Kawai T, Inoue K, Nakato A, Noguchi T, Vilas F, Hendrix AR, Jaramillo-Correa C, Domingue DL, Dominguez G, Gainsforth Z, Engrand C, Duprat J, Russell SS, Bonato E, Ma C, Kawamoto T, Wada T, Watanabe S, Endo R, Enju S, Riu L, Rubino S, Tack P, Takeshita S, Takeichi Y, Takeuchi A, Takigawa A, Takir D, Tanigaki T, Taniguchi A, Tsukamoto K, Yagi T, Yamada S, Yamamoto K, Yamashita Y, Yasutake M, Uesugi K, Umegaki I, Chiu I, Ishizaki T, Okumura S, Palomba E, Pilorget C, Potin SM, Alasli A, Anada S, Araki Y, Sakatani N, Schultz C, Sekizawa O, Sitzman SD, Sugiura K, Sun M, Dartois E, De Pauw E, Dionnet Z, Djouadi Z, Falkenberg G, Fujita R, Fukuma T, Gearba IR, Hagiya K, Hu MY, Kato T, Kawamura T, Kimura M, Kubo MK, Langenhorst F, Lantz C, Lavina B, Lindner M, Zhao J, Vekemans B, Baklouti D, Bazi B, Borondics F, Nagasawa S, Nishiyama G, Nitta K, Mathurin J, Matsumoto T, Mitsukawa I, Miura H, Miyake A, Miyake Y, Yurimoto H, Okazaki R, Yabuta H, Naraoka H, Sakamoto K, Tachibana S, Connolly HC, Lauretta DS, Yoshitake M, Yoshikawa M, Yoshikawa K, Yoshihara K, Yokota Y, Yogata K, Yano H, Yamamoto Y, Yamamoto D, Yamada M, Yamada T, Yada T, Wada K, Usui T, Tsukizaki R, Terui F, Takeuchi H, Takei Y, Iwamae A, Soejima H, Shirai K, Shimaki Y, Senshu H, Sawada H, Saiki T, Ozaki M, Ono G, Okada T, Ogawa N, Ogawa K, Noguchi R, Noda H, Nishimura M, Namiki N, Nakazawa S, Morota T, Miyazaki A, Miura A, Mimasu Y, Matsumoto K, Kumagai K, Kouyama T, Kikuchi S, Kawahara K, Kameda S, Iwata T, Ishihara Y, Ishiguro M, Ikeda H, Hosoda S, Honda R, Honda C, Hitomi Y, Hirata N, Hirata N, Hayashi T, Hayakawa M, Hatakeda K, Furuya S, Fukai R, Fujii A, Cho Y, Arakawa M, Abe M, Watanabe S, Tsuda Y. Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples. Science 2023; 379:eabn8671. [PMID: 36137011 DOI: 10.1126/science.abn8671] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide-bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu's parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and calcium- and aluminum-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed through aqueous alteration reactions at low temperature, high pH, and water/rock ratios of <1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate that Ryugu's parent body formed ~2 million years after the beginning of Solar System formation.
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Affiliation(s)
- T Nakamura
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Matsumoto
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - K Amano
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Y Enokido
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M E Zolensky
- NASA Johnson Space Center; Houston, TX 77058, USA
| | - T Mikouchi
- The University Museum, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Genda
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - M Y Zolotov
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - K Kurosawa
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - S Wakita
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - R Hyodo
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Nagano
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - D Nakashima
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Y Takahashi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Isotope Science Center, The University of Tokyo, Tokyo 113-0032, Japan
| | - Y Fujioka
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Kikuiri
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - E Kagawa
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Matsuoka
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon 92195 France.,Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8567, Japan
| | - A J Brearley
- Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA
| | - A Tsuchiyama
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan.,Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China.,Center for Excellence in Deep Earth Science, CAS, Guangzhou 510640, China
| | - M Uesugi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - J Matsuno
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan
| | - Y Kimura
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - M Sato
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R E Milliken
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - E Tatsumi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, Tenerife 38205, Spain
| | - S Sugita
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Hiroi
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - K Kitazato
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - D Brownlee
- Department of Astronomy, University of Washington, Seattle, WA 98195 USA
| | - D J Joswiak
- Department of Astronomy, University of Washington, Seattle, WA 98195 USA
| | - M Takahashi
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - K Ninomiya
- Institute for Radiation Sciences, Osaka University, Toyonaka 560-0043, Japan
| | - T Takahashi
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan.,Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Osawa
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
| | - K Terada
- Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan
| | - F E Brenker
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - B J Tkalcec
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - L Vincze
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - R Brunetto
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - A Aléon-Toppani
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - Q H S Chan
- Department of Earth Sciences, Royal Holloway, University of London, Egham TW20 0EX, UK
| | - M Roskosz
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - J-C Viennet
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - P Beck
- Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Université Grenoble Alpes, 38000 Grenoble, France
| | - E E Alp
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - T Michikami
- Faculty of Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - Y Nagaashi
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan.,Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - T Tsuji
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan.,School of Engineering, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Ino
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Kwansei Gakuin University, Sanda 669-1330, Japan
| | - J Martinez
- NASA Johnson Space Center; Houston, TX 77058, USA
| | - J Han
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77204, USA
| | - A Dolocan
- Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - R J Bodnar
- Department of Geoscience, Virginia Tech, Blacksburg, VA 24061, USA
| | - M Tanaka
- Materials Analysis Station, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - H Yoshida
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Sugiyama
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - A J King
- Department of Earth Science, Natural History Museum, London SW7 5BD, UK
| | - K Fukushi
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - H Suga
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - S Yamashita
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - T Kawai
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Inoue
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - A Nakato
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Noguchi
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan.,Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
| | - F Vilas
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - A R Hendrix
- Planetary Science Institute, Tucson, AZ 85719, USA
| | | | - D L Domingue
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - G Dominguez
- Department of Physics, California State University, San Marcos, CA 92096, USA
| | - Z Gainsforth
- Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
| | - C Engrand
- Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - J Duprat
- Institut de Minéralogie, Physique des Matériaux et Cosmochimie, Muséum National d'Histoire Naturelle, Centre national de la recherche scientifique (CNRS), Sorbonne Université, Paris, France
| | - S S Russell
- Department of Earth Science, Natural History Museum, London SW7 5BD, UK
| | - E Bonato
- Institute for Planetary Research, Deutsches Zentrum für Luftund Raumfahrt, Rutherfordstraße 2 12489 Berlin, Germany
| | - C Ma
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena CA 91125, USA
| | - T Kawamoto
- Department of Geosciences, Shizuoka University, Shizuoka 422-8529, Japan
| | - T Wada
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - S Watanabe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan
| | - R Endo
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - S Enju
- Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
| | - L Riu
- European Space Astronomy Centre, 28692 Villanueva de la Cañada, Spain
| | - S Rubino
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - P Tack
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - S Takeshita
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan
| | - Y Takeichi
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan.,Department of Applied Physics, Osaka University, Suita 565-0871, Japan
| | - A Takeuchi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - A Takigawa
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - D Takir
- NASA Johnson Space Center; Houston, TX 77058, USA
| | | | - A Taniguchi
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori 590-0494, Japan
| | - K Tsukamoto
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - T Yagi
- National Metrology Institute of Japan, AIST, Tsukuba 305-8565, Japan
| | - S Yamada
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - K Yamamoto
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Y Yamashita
- National Metrology Institute of Japan, AIST, Tsukuba 305-8565, Japan
| | - M Yasutake
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - K Uesugi
- Scattering and Imaging Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - I Umegaki
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan.,Toyota Central Research and Development Laboratories, Nagakute 480-1192, Japan
| | - I Chiu
- Institute for Radiation Sciences, Osaka University, Toyonaka 560-0043, Japan
| | - T Ishizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Okumura
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - E Palomba
- Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica, Rome 00133, Italy
| | - C Pilorget
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France.,Institut Universitaire de France, Paris, France
| | - S M Potin
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon 92195 France.,Faculty of Aerospace Engineering, Delft University of Technology, Delft, Netherlands
| | - A Alasli
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - S Anada
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Y Araki
- Department of Physical Sciences, Ritsumeikan University, Shiga 525-0058, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - C Schultz
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - O Sekizawa
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - S D Sitzman
- Physical Sciences Laboratory, The Aerospace Corporation, CA 90245, USA
| | - K Sugiura
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - M Sun
- Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou 510640, China.,Center for Excellence in Deep Earth Science, CAS, Guangzhou 510640, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - E Dartois
- Institut des Sciences Moléculaires d'Orsay, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - E De Pauw
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - Z Dionnet
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - Z Djouadi
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - G Falkenberg
- Deutsches Elektronen-Synchrotron Photon Science, 22603 Hamburg, Germany
| | - R Fujita
- Department of Mechanical Systems Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - T Fukuma
- Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan
| | - I R Gearba
- Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - K Hagiya
- Graduate School of Life Science, University of Hyogo, Hyogo 678-1297, Japan
| | - M Y Hu
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - T Kato
- Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - T Kawamura
- Institut de Physique du Globe de Paris, Université de Paris, Paris 75205, France
| | - M Kimura
- Department of Materials Structure Science, The Graduate University for Advanced Studies (SOKENDAI), Tsukuba, Ibaraki 305-0801, Japan.,Institute of Materials Structure Science, High-Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - M K Kubo
- Division of Natural Sciences, International Christian University, Mitaka 181-8585, Japan
| | - F Langenhorst
- Institute of Geosciences, Friedrich-Schiller-Universität Jena, 07745 Jena, Germany
| | - C Lantz
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - B Lavina
- Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60637, USA
| | - M Lindner
- Institute of Geoscience, Goethe University, Frankfurt, 60438 Frankfurt am Main, Germany
| | - J Zhao
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - B Vekemans
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - D Baklouti
- Institut d'Astrophysique Spatiale, Université Paris-Saclay, Orsay 91405, France
| | - B Bazi
- Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, Belgium
| | - F Borondics
- Optimized Light Source of Intermediate Energy to LURE (SOLEIL) L'Orme des Merisiers, Gif sur Yvette F-91192, France
| | - S Nagasawa
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa 277-8583, Japan.,Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - G Nishiyama
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Nitta
- Spectroscopy Division, Japan Synchrotron Radiation Research Institute, Sayo 679-5198, Japan
| | - J Mathurin
- Institut Chimie Physique, Université Paris-Saclay, CNRS, 91405 Orsay, France
| | - T Matsumoto
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - I Mitsukawa
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - H Miura
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - A Miyake
- Division of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - Y Miyake
- High Energy Accelerator Research Organization, Tokai 319-1106, Japan
| | - H Yurimoto
- Department of Natural History Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - R Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - H Yabuta
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - H Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - K Sakamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Tachibana
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - H C Connolly
- Department of Geology, Rowan University, Glassboro, NJ 08028, USA
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA
| | - M Yoshitake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K Yoshihara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yogata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - D Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Yamada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Usui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Department of Mechanical Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Iwamae
- Marine Works Japan, Yokosuka 237-0063, Japan
| | - H Soejima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - K Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Noguchi
- Faculty of Science, Niigata University, Niigata 950-2181, Japan
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - M Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Namiki
- Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Morota
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A Miyazaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Matsumoto
- Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Kumagai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - T Kouyama
- Digital Architecture Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - S Kikuchi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Kawahara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Kameda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - Y Ishihara
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - M Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan.,Center for Data Science, Ehime University, Matsuyama 790-8577, Japan
| | - C Honda
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Hitomi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - N Hirata
- Aizu Research Center for Space Informatics, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Hayashi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Hatakeda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Marine Works Japan, Yokosuka 237-0063, Japan
| | - S Furuya
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Fukai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Cho
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies (SOKENDAI), Hayama 240-0193, Japan
| | - S Watanabe
- Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
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Soda T, Tashiro Y, Koike S, Ikeuchi R, Okada T. Evaluación de la incidencia, factores predictivos y consideraciones sobre el tratamiento de los granulomas genitourinarios asintomáticos después de la terapia intravesical con bacilo de Calmette-Guérin. Actas Urol Esp 2022. [DOI: 10.1016/j.acuro.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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9
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Sano M, Toyota T, Morimoto T, Okada T, Sasaki Y, Taniguchi T, Kim K, Kobori A, Ehara N, Kinoshita M, Doi A, Tomii K, Kihara Y, Furukawa Y. Prediction of clinical outcomes in patients with coronavirus disease 2019 using high-sensitive troponin I and N-terminal pro-B-type natriuretic peptide. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Several comorbidities, including cardiovascular diseases or myocardial injury, are reported to be associated with poor prognosis in patients with Coronavirus disease 2019 (COVID-19). However, detailed prognostic analysis of myocardial injury by various biomarkers in COVID-19 patients is limited.
Purpose
This study aims to explore the prognostic values of high-sensitive Troponin I (hsTnI) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) for COVID-19 patients using Japanese real-world data.
Methods
The COVID-MI study is a retrospective cohort study that enrolls consecutive laboratory-confirmed COVID-19 patients admitted to the hospital from July 2020 to September 2021. We collected clinical data, including cardiac biomarker values, by chart review. If the prespecified biomarkers in concern were not available, we measured them using the institutional serum blood bank, which enrolled patients prospectively from July 2020. Patients with available biomarkers were analyzed according to the values of hsTnI or NT-proBNP, using the clinically relevant thresholds (hsTnI: 5 ng/L and 99th percentile of the upper reference limit [99%ile URL], and NT-proBNP: 125 pg/mL and 900 pg/mL). The primary outcome measure was all-cause death. Secondary outcome measures included acute respiratory distress syndrome, myocardial infarction, myocarditis/pericarditis, venous thromboembolism, cerebral infarction, and bleeding events.
Results
We enrolled 917 patients with COVID-19 confirmed by viral nucleic acid amplification test. The mean age was 61 years, and 591 patients (64%) were men. On admission, the number of patients classified as severe or critical COVID-19 was 515 (56%) and 85 (8.7%), respectively. Among the 544 patients with hsTnI values, 365 (67%) patients had elevated hsTnI of ≥5 ng/L, and 134 patients (25%) had TnI of ≥99%ile URL. Besides, among 546 patients with NT-proBNP values, 295 patients (54%) had elevated NT-pro-BNP of ≥125 pg/mL, and 93 patients (17%) had NT-proBNP of ≥900 pg/mL. The median follow-up period was 31 days (interquartile range: 11–90 days). In cumulative incidence analysis, higher levels of hsTnI and NT-proBNP were associated with significantly higher mortality (hsTnI: <5 ng/L group; 8.8%, 5 ng/L to 99%ile URL group; 19%, and ≥99%ile URL group; 37%, P<0.001, and NT-proBNP: <125 pg/mL group; 7.8%, 125 to 900 pg/mL group; 21%, and ≥900 pg/mL group; 45%, P<0.001). The adjusted risk for all-cause death remained significant for each threshold of cardiac biomarkers (hsTnI ≥99%ile URL: hazard ratio [HR] 1.98, 95% confidence interval [CI] 1.11–3.54, P=0.02, and NT-proBNP ≥900 pg/mL: HR 3.60, 95% CI 1.86–6.98, P<0.001).
Conclusion
Elevation of hsTnI or NT-proBNP was associated with poor prognosis in the current relatively severely ill COVID-19 patients. Measuring hsTnI or NT-proBNP can be an attractive option for risk stratification and deciding appropriate management in patients with COVID-19.
Funding Acknowledgement
Type of funding sources: Public hospital(s). Main funding source(s): Institutional Research Fund at Kobe City Medical Center General Hospital
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Affiliation(s)
- M Sano
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - T Toyota
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - T Morimoto
- Kobe City Medical Center General Hospital, Center for Clinical Research and Innovation , Kobe , Japan
| | - T Okada
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - Y Sasaki
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - T Taniguchi
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - K Kim
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - A Kobori
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - N Ehara
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - M Kinoshita
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
| | - A Doi
- Kobe City Medical Center General Hospital, Department of Infectious Diseases , Kobe , Japan
| | - K Tomii
- Kobe City Medical Center General Hospital, Department of Respiratory Medicine , Kobe , Japan
| | - Y Kihara
- Kobe City Medical Center General Hospital , Kobe , Japan
| | - Y Furukawa
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine , Kobe , Japan
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10
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Ueshima E, Sofue K, Takaki H, Hirata Y, Kodama H, Hamada M, Matsushiro K, Sasaki K, Gentsu T, Okada T, Yamaguchi M, Yamakado K, Sugimoto K, Murakami T. Abstract No. 359 Embolization induced tumor-associated macrophage polarization in tumor immune microenvironment can be reprogrammed by lenvatinib in a rat hepatoma model. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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11
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Kawada K, Okada T, Masui K, Nishizaki D, Kasahara K, Yokoyama D, Obama K. Robotic supralevator total pelvic exenteration with lateral pelvic sidewall dissection for rectal cancer. Tech Coloproctol 2022; 26:761-762. [DOI: 10.1007/s10151-022-02625-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 04/21/2022] [Indexed: 11/28/2022]
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12
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Tachibana S, Sawada H, Okazaki R, Takano Y, Sakamoto K, Miura YN, Okamoto C, Yano H, Yamanouchi S, Michel P, Zhang Y, Schwartz S, Thuillet F, Yurimoto H, Nakamura T, Noguchi T, Yabuta H, Naraoka H, Tsuchiyama A, Imae N, Kurosawa K, Nakamura AM, Ogawa K, Sugita S, Morota T, Honda R, Kameda S, Tatsumi E, Cho Y, Yoshioka K, Yokota Y, Hayakawa M, Matsuoka M, Sakatani N, Yamada M, Kouyama T, Suzuki H, Honda C, Yoshimitsu T, Kubota T, Demura H, Yada T, Nishimura M, Yogata K, Nakato A, Yoshitake M, Suzuki AI, Furuya S, Hatakeda K, Miyazaki A, Kumagai K, Okada T, Abe M, Usui T, Ireland TR, Fujimoto M, Yamada T, Arakawa M, Connolly HC, Fujii A, Hasegawa S, Hirata N, Hirata N, Hirose C, Hosoda S, Iijima Y, Ikeda H, Ishiguro M, Ishihara Y, Iwata T, Kikuchi S, Kitazato K, Lauretta DS, Libourel G, Marty B, Matsumoto K, Michikami T, Mimasu Y, Miura A, Mori O, Nakamura-Messenger K, Namiki N, Nguyen AN, Nittler LR, Noda H, Noguchi R, Ogawa N, Ono G, Ozaki M, Senshu H, Shimada T, Shimaki Y, Shirai K, Soldini S, Takahashi T, Takei Y, Takeuchi H, Tsukizaki R, Wada K, Yamamoto Y, Yoshikawa K, Yumoto K, Zolensky ME, Nakazawa S, Terui F, Tanaka S, Saiki T, Yoshikawa M, Watanabe S, Tsuda Y. Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth. Science 2022; 375:1011-1016. [PMID: 35143255 DOI: 10.1126/science.abj8624] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location. Surface pebbles at both landing sites show morphological variations ranging from rugged to smooth, similar to Ryugu's boulders, and shapes from quasi-spherical to flattened. The samples were returned to Earth on 6 December 2020. We describe the morphology of >5 grams of returned pebbles and sand. Their diverse color, shape, and structure are consistent with the observed materials of Ryugu; we conclude that they are a representative sample of the asteroid.
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Affiliation(s)
- S Tachibana
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - Y Takano
- Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, Kanagawa 237-0061, Japan
| | - K Sakamoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y N Miura
- Earthquake Research Institute, The University of Tokyo, Tokyo 113-0032, Japan
| | - C Okamoto
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Yamanouchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - Y Zhang
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - S Schwartz
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Planetary Science Institute, Tucson, AZ 85719, USA
| | - F Thuillet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - H Yurimoto
- Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - T Nakamura
- Department of Earth Sciences, Tohoku University, Sendai 980-8578, Japan
| | - T Noguchi
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan.,Division of Earth and Planetary Sciences, Kyoto University, Kyoto, Japan
| | - H Yabuta
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - H Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - A Tsuchiyama
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu 525-8577, Japan.,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - N Imae
- Polar Science Resources Center, National Institute of Polar Research, Tokyo 190-8518, Japan
| | - K Kurosawa
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - A M Nakamura
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - K Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - S Sugita
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Morota
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - S Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - E Tatsumi
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, E-38205 Tenerife, Spain
| | - Y Cho
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Yoshioka
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Sakatani
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Kouyama
- Information Technology and Human Factors, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - H Suzuki
- Department of Physics, Meiji University, Kawasaki 214-8571, Japan
| | - C Honda
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yoshimitsu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Kubota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Demura
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Yada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yogata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Nakato
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshitake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A I Suzuki
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan.,Department of Economics, Toyo University, Tokyo 112-8606, Japan
| | - S Furuya
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Hatakeda
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - A Miyazaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Kumagai
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Usui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T R Ireland
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - M Fujimoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yamada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H C Connolly
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA.,Department of Geology, Rowan University, Glassboro, NJ 08028, USA
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hasegawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Hirata
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y Ishihara
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - K Kitazato
- Aizu Research Center for Space Informatics, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA
| | - G Libourel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre national de la recherche scientifique, Laboratoire Lagrange, F-06304 Nice CEDEX 4, France
| | - B Marty
- Université de Lorraine, Centre national de la recherche scientifique, Centre de Recherches Pétrographiques et Géochimiques, F-54000 Nancy, France
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Michikami
- Department of Mechanical Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - O Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | | | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - A N Nguyen
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - L R Nittler
- Carnegie Institution for Science, Washington, DC 20015, USA
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Science, Niigata University, Niigata 950-2181, Japan
| | - N Ogawa
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Shimada
- JAXA Space Exploration Center, JAXA, Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L69 3BX, UK
| | | | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K Yumoto
- UTokyo Organization for Planetary and Space Science-Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M E Zolensky
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Watanabe
- Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo 113-0033, Japan
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13
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Kawabata H, Ono Y, Tamamura N, Oyama K, Ueda J, Sato H, Takahashi K, Taniue K, Okada T, Fujibayashi S, Hayashi A, Goto T, Enomoto K, Konishi H, Fujiya M, Miyakawa K, Tanino M, Nishikawa Y, Koga D, Watanabe T, Maeda C, Karasaki H, Liss AS, Mizukami Y, Okumura T. Mutant GNAS limits tumor aggressiveness in established pancreatic cancer via antagonizing the KRAS-pathway. J Gastroenterol 2022; 57:208-220. [PMID: 35018527 DOI: 10.1007/s00535-021-01846-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/25/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Mutations in GNAS drive pancreatic tumorigenesis and frequently occur in intraductal papillary mucinous neoplasm (IPMN); however, their value as a therapeutic target is yet to be determined. This study aimed at evaluating the involvement of mutant GNAS in tumor aggressiveness in established pancreatic cancer. METHODS CRISPR/Cas9-mediated GNAS R201H silencing was performed using human primary IPMN-associated pancreatic cancer cells. The role of oncogenic GNAS in tumor maintenance was evaluated by conducting cell culture and xenograft experiments, and western blotting and transcriptome analyses were performed to uncover GNAS-driven signatures. RESULTS Xenografts of GNAS wild-type cells were characterized by a higher Ki-67 labeling index relative to GNAS-mutant cells. Phenotypic alterations in the GNAS wild-type tumors resulted in a significant reduction in mucin production accompanied by solid with massive stromal components. Transcriptional profiling suggested an apparent conflict of mutant GNAS with KRAS signaling. A significantly higher Notch intercellular domain (NICD) was observed in the nuclear fraction of GNAS wild-type cells. Meanwhile, inhibition of protein kinase A (PKA) induced NICD in GNAS-mutant IPMN cells, suggesting that NOTCH signaling is negatively regulated by the GNAS-PKA pathway. GNAS wild-type cells were characterized by a significant invasive property relative to GNAS-mutant cells, which was mediated through the NOTCH regulatory pathway. CONCLUSIONS Oncogenic GNAS induces mucin production, not only via MUC2 but also via MUC5AC/B, which may enlarge cystic lesions in the pancreas. The mutation may also limit tumor aggressiveness by attenuating NOTCH signaling; therefore, such tumor-suppressing effects must be considered when therapeutically inhibiting the GNAS pathway.
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Affiliation(s)
- Hidemasa Kawabata
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Yusuke Ono
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Nobue Tamamura
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Kyohei Oyama
- Department of Cardiovascular Surgery, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Jun Ueda
- Department of Advanced Medical Science, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hiroki Sato
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
- Division of Gastrointestinal and Oncologic Surgery, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Kenji Takahashi
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Kenzui Taniue
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
- Isotope Science Center, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Tetsuhiro Okada
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Syugo Fujibayashi
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Akihiro Hayashi
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Takuma Goto
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Katsuro Enomoto
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hiroaki Konishi
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Mikihiro Fujiya
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Keita Miyakawa
- Department of Surgical Pathology, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Mishie Tanino
- Department of Surgical Pathology, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Yuji Nishikawa
- Division of Tumor Pathology, Department of Pathology, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Daisuke Koga
- Department of Microscopic Anatomy and Cell Biology, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Tsuyoshi Watanabe
- Department of Microscopic Anatomy and Cell Biology, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Chiho Maeda
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Andrew S Liss
- Division of Gastrointestinal and Oncologic Surgery, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Yusuke Mizukami
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan.
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan.
| | - Toshikatsu Okumura
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
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Abe K, Bronner C, Hayato Y, Hiraide K, Ikeda M, Imaizumi S, Kameda J, Kanemura Y, Kataoka Y, Miki S, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Watanabe S, Yano T, Han S, Kajita T, Okumura K, Tashiro T, Xia J, Megias G, Bravo-Berguño D, Labarga L, Marti L, Zaldivar B, Pointon B, Blaszczyk F, Kearns E, Raaf J, Stone J, Wan L, Wester T, Bian J, Griskevich N, Kropp W, Locke S, Mine S, Smy M, Sobel H, Takhistov V, Hill J, Kim J, Lim I, Park R, Bodur B, Scholberg K, Walter C, Cao S, Bernard L, Coffani A, Drapier O, El Hedri S, Giampaolo A, Gonin M, Mueller T, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang J, Learned J, Anthony L, Martin D, Scott M, Sztuc A, Uchida Y, Berardi V, Catanesi M, Radicioni E, Calabria N, Machado L, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Mattiazzi M, Ospina N, Ludovici L, Maekawa Y, Nishimura Y, Friend M, Hasegawa T, Ishida T, Kobayashi T, Jakkapu M, Matsubara T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Kotsar Y, Nakano Y, Ozaki H, Shiozawa T, Suzuki A, Takeuchi Y, Yamamoto S, Ali A, Ashida Y, Feng J, Hirota S, Kikawa T, Mori M, Nakaya T, Wendell R, Yasutome K, Fernandez P, McCauley N, Mehta P, Tsui K, Fukuda Y, Itow Y, Menjo H, Niwa T, Sato K, Tsukada M, Lagoda J, Lakshmi S, Mijakowski P, Zalipska J, Jiang J, Jung C, Vilela C, Wilking M, Yanagisawa C, Hagiwara K, Harada M, Horai T, Ishino H, Ito S, Kitagawa H, Koshio Y, Ma W, Piplani N, Sakai S, Barr G, Barrow D, Cook L, Goldsack A, Samani S, Wark D, Nova F, Boschi T, Di Lodovico F, Gao J, Migenda J, Taani M, Zsoldos S, Yang J, Jenkins S, Malek M, McElwee J, Stone O, Thiesse M, Thompson L, Okazawa H, Kim S, Seo J, Yu I, Nishijima K, Koshiba M, Iwamoto K, Nakagiri K, Nakajima Y, Ogawa N, Yokoyama M, Martens K, Vagins M, Kuze M, Izumiyama S, Yoshida T, Inomoto M, Ishitsuka M, Ito H, Kinoshita T, Matsumoto R, Ohta K, Shinoki M, Suganuma T, Ichikawa A, Nakamura K, Martin J, Tanaka H, Towstego T, Akutsu R, Gousy-Leblanc V, Hartz M, Konaka A, de Perio P, Prouse N, Chen S, Xu B, Zhang Y, Posiadala-Zezula M, Hadley D, O’Flaherty M, Richards B, Jamieson B, Walker J, Minamino A, Okamoto K, Pintaudi G, Sano S, Sasaki R. Diffuse supernova neutrino background search at Super-Kamiokande. Int J Clin Exp Med 2021. [DOI: 10.1103/physrevd.104.122002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Sato H, Goto T, Hayashi A, Kawabata H, Okada T, Takauji S, Sasajima J, Enomoto K, Fujiya M, Oyama K, Ono Y, Sugitani A, Mizukami Y, Okumura T. Prognostic significance of skeletal muscle decrease in unresectable pancreatic cancer: Survival analysis using the Weibull exponential distribution model. Pancreatology 2021; 21:892-902. [PMID: 33722506 DOI: 10.1016/j.pan.2021.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/21/2021] [Accepted: 03/01/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND/OBJECTIVES Decrease in skeletal muscle mass and function is associated with a poor prognosis following surgical resection of pancreatic ductal adenocarcinomas (PDAs). This study evaluated whether skeletal muscle mass decrease affects PDA outcomes. METHODS Data of 112 patients with advanced and unresectable PDA who underwent chemotherapy in a single institution were retrospectively analyzed. Information on age, sex, hematological investigations, including systemic inflammation-based markers and nutritional assessment biomarkers, and imaging parameters of skeletal muscle mass and visceral adipose tissue were retrieved from the patients' medical records. The efficiency of the Cox, Weibull, and standardized exponential models were compared using hazard ratios and the Akaike Information Criterion (AIC). RESULTS Results from the Weibull, Cox, and standardized exponential model analyses indicated that low skeletal muscle mass, Eastern Cooperative Oncology Group performance status (PS), and the requirement of biliary drainage were associated with the highest risk of death, followed by carcinoembryonic antigen (CEA) levels and the presence of ascites. The AIC value from the four significant parameters was lowest for the Weibull-exponential distribution (222.3) than that of the Cox (653.7) and standardized exponential models (265.7). We developed a model for estimating the 1-year survival probability using the Weibull-exponential distribution. CONCLUSIONS Low-skeletal muscle index, PS, requirement of biliary drainage, CEA levels, and presence of ascites are independent factors for predicting poor patient survival after chemotherapy. Improved survival modeling using a parametric approach may accurately predict the outcome of patients with advanced-stage PDA.
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Affiliation(s)
- Hiroki Sato
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Takuma Goto
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Akihiro Hayashi
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Hidemasa Kawabata
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Tetsuhiro Okada
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Shuhei Takauji
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Junpei Sasajima
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Katsuro Enomoto
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Mikihiro Fujiya
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Kyohei Oyama
- Department of Cardiovascular Surgery, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Yusuke Ono
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, 3-1, North-33, East-14, Higashi-Ku, Sapporo, Japan
| | - Ayumu Sugitani
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, 3-1, North-33, East-14, Higashi-Ku, Sapporo, Japan
| | - Yusuke Mizukami
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan; Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, 3-1, North-33, East-14, Higashi-Ku, Sapporo, Japan.
| | - Toshikatsu Okumura
- Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka-Higashi, Asahikawa, Japan
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Taguchi K, Yamashita S, Hamamoto S, Deguchi R, Kawase K, Okada T, Sugino T, Unno R, Kato T, Ando R, Okada A, Kohjimoto Y, Hara I, Yasui T. Ureteroscopy-assisted versus conventional ultrasound-guided renal access for miniaturised endoscopic combined intrarenal surgery: A multicentre comparative study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00677-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Ishigaki H, Futamura I, Okada T, Mamiya T, Hayasaki Y. Height measurement of solder bumps using two-wavelength parallel four-step phase shifting digital holography. Appl Opt 2021; 60:B8-B13. [PMID: 33798131 DOI: 10.1364/ao.414941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Digital holography (DH) with two wavelengths (TW) that are close to each other was applied to height measurement of solder bumps having spherical specular surfaces with diameters of ∼20µm and heights of ∼20µm. We employed the parallel phase shifting method for instantaneous image capturing, and we improved the spatial resolution of our TW-DH system having two beams with different wavelengths that traveled in opposite directions in the interferometer. It gave 74-times higher repetition and 2.4-times higher spatial resolution than those in our previous DH system based on the Fourier transform method.
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18
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Okada T, Kako E, Konomi T, Masuzawa M, Sakai H, Tsuchiya K, Ueki R, Umemori K, Pizzol P, Poudel A, Tajima T. Systematic evaluation of magnetic sensitivities of anisotropic magnetoresistive sensors at liquid helium temperature for superconducting cavities. Rev Sci Instrum 2021; 92:035003. [PMID: 33820008 DOI: 10.1063/5.0038805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Trapped magnetic flux in bulk superconductors reduces the quality factor Q in superconducting radio-frequency (SRF) cavities. However, the mechanisms underlying flux trapping and radio-frequency loss are not well understood. Detailed observation of the magnetic distributions is important for understanding such phenomena. Magnetic field mapping is useful for observing the magnetic field distribution around SRF cavities. Measuring the change in the magnetic field around the cavity elucidates the flux trapping behavior. Anisotropic magnetoresistive (AMR) sensors are inexpensive and small devices that can detect magnetic flux density. The magnetic sensitivities of AMR sensors need to be evaluated at liquid helium temperature for the magnetic field mapping of SRF cavities. In this study, a test stand was constructed to calibrate the magnetic sensitivities of AMR sensors in liquid helium, and 110 AMR sensors were tested using this stand. The magnetic sensitivities were evaluated systematically. A solenoid coil was used to control the uniform external magnetic field and to measure the magnetic sensitivity at low temperatures. All AMR sensors exhibited suitable sensitivities to the magnetic field around the SRF cavity. The variation in these sensitivities in all AMR sensors was ∼1%. The AMR sensors were found to have sufficient sensitivity for mapping the magnetic field around the exterior surface of the SRF cavity.
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Affiliation(s)
- T Okada
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - E Kako
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - T Konomi
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - M Masuzawa
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - H Sakai
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Tsuchiya
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - R Ueki
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Umemori
- SOKENDAI, The Graduate University of Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - P Pizzol
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Poudel
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Tajima
- LANL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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19
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Molodyk A, Samoilenkov S, Markelov A, Degtyarenko P, Lee S, Petrykin V, Gaifullin M, Mankevich A, Vavilov A, Sorbom B, Cheng J, Garberg S, Kesler L, Hartwig Z, Gavrilkin S, Tsvetkov A, Okada T, Awaji S, Abraimov D, Francis A, Bradford G, Larbalestier D, Senatore C, Bonura M, Pantoja AE, Wimbush SC, Strickland NM, Vasiliev A. Development and large volume production of extremely high current density YBa 2Cu 3O 7 superconducting wires for fusion. Sci Rep 2021; 11:2084. [PMID: 33483553 PMCID: PMC7822827 DOI: 10.1038/s41598-021-81559-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 01/05/2021] [Indexed: 01/30/2023] Open
Abstract
The fusion power density produced in a tokamak is proportional to its magnetic field strength to the fourth power. Second-generation high temperature superconductor (2G HTS) wires demonstrate remarkable engineering current density (averaged over the full wire), JE, at very high magnetic fields, driving progress in fusion and other applications. The key challenge for HTS wires has been to offer an acceptable combination of high and consistent superconducting performance in high magnetic fields, high volume supply, and low price. Here we report a very high and reproducible JE in practical HTS wires based on a simple YBa2Cu3O7 (YBCO) superconductor formulation with Y2O3 nanoparticles, which have been delivered in just nine months to a commercial fusion customer in the largest-volume order the HTS industry has seen to date. We demonstrate a novel YBCO superconductor formulation without the c-axis correlated nano-columnar defects that are widely believed to be prerequisite for high in-field performance. The simplicity of this new formulation allows robust and scalable manufacturing, providing, for the first time, large volumes of consistently high performance wire, and the economies of scale necessary to lower HTS wire prices to a level acceptable for fusion and ultimately for the widespread commercial adoption of HTS.
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Affiliation(s)
- A Molodyk
- S-Innovations, Moscow, Russia.
- SuperOx, Moscow, Russia.
| | - S Samoilenkov
- S-Innovations, Moscow, Russia
- SuperOx, Moscow, Russia
| | | | - P Degtyarenko
- SuperOx, Moscow, Russia
- Joint Institute for High Temperature, Russian Academy of Sciences, Moscow, Russia
| | - S Lee
- SuperOx Japan, Kanagawa, Japan
| | | | | | | | - A Vavilov
- S-Innovations, Moscow, Russia
- SuperOx, Moscow, Russia
- SuperOx Japan, Kanagawa, Japan
| | - B Sorbom
- Commonwealth Fusion Systems, Cambridge, MA, USA
| | - J Cheng
- Commonwealth Fusion Systems, Cambridge, MA, USA
| | - S Garberg
- Commonwealth Fusion Systems, Cambridge, MA, USA
| | - L Kesler
- Commonwealth Fusion Systems, Cambridge, MA, USA
| | - Z Hartwig
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - S Gavrilkin
- P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow, Russia
| | - A Tsvetkov
- P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow, Russia
| | - T Okada
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - S Awaji
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - D Abraimov
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - A Francis
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - G Bradford
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - D Larbalestier
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - C Senatore
- University of Geneva, Geneva, Switzerland
| | - M Bonura
- University of Geneva, Geneva, Switzerland
| | - A E Pantoja
- Robinson Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - S C Wimbush
- Robinson Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - N M Strickland
- Robinson Research Institute, Victoria University of Wellington, Wellington, New Zealand
| | - A Vasiliev
- National Research Centre "Kurchatov Institute", Moscow, Russia
- Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow, Russia
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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20
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Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, Ito H, Kameda J, Kataoka Y, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakajima Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Yano T, Akutsu R, Han S, Kajita T, Okumura K, Tashiro T, Wang R, Xia J, Bravo-Berguño D, Labarga L, Marti L, Zaldivar B, Blaszczyk F, Kearns E, Gustafson J, Raaf J, Stone J, Wan L, Wester T, Bian J, Griskevich N, Kropp W, Locke S, Mine S, Smy M, Sobel H, Takhistov V, Weatherly P, Hill J, Kim J, Lim I, Park R, Bodur B, Scholberg K, Walter C, Coffani A, Drapier O, El Hedri S, Giampaolo A, Gonin M, Mueller T, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang J, Learned J, Anthony L, Sztuc A, Uchida Y, Berardi V, Catanesi M, Radicioni E, Calabria N, Machado L, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Ospina N, Ludovici L, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Kobayashi T, Matsubara T, Nakadaira T, Jakkapu M, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Nakano Y, Shiozawa T, Suzuki A, Takeuchi Y, Yamamoto S, Ali A, Ashida Y, Feng J, Hirota S, Ichikawa A, Kikawa T, Mori M, Nakaya T, Wendell R, Yasutome K, Fernandez P, McCauley N, Mehta P, Pritchard A, Tsui K, Fukuda Y, Itow Y, Menjo H, Niwa T, Sato K, Tsukada M, Mijakowski P, Posiadala-Zezula M, Jung C, Vilela C, Wilking M, Yanagisawa C, Harada M, Hagiwara K, Horai T, Ishino H, Ito S, Koshio Y, Ma W, Piplani N, Sakai S, Kuno Y, Barr G, Barrow D, Cook L, Goldsack A, Samani S, Simpson C, Wark D, Nova F, Boschi T, Di Lodovico F, Molina Sedgwick S, Taani M, Zsoldos S, Yang J, Jenkins S, McElwee J, Thiesse M, Thompson L, Malek M, Stone O, Okazawa H, Kim S, Yu I, Nishijima K, Koshiba M, Ogawa N, Iwamoto K, Yokoyama M, Martens K, Vagins M, Kuze M, Izumiyama S, Tanaka M, Yoshida T, Inomoto M, Ishitsuka M, Matsumoto R, Ohta K, Shinoki M, Martin J, Tanaka H, Towstego T, Hartz M, Konaka A, de Perio P, Prouse N, Pointon B, Chen S, Xu B, Richards B, Jamieson B, Walker J, Minamino A, Okamoto K, Pintaudi G, Sasaki R. Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande. Int J Clin Exp Med 2021. [DOI: 10.1103/physrevd.103.012008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Okada T, Mizukami Y, Ono Y, Sato H, Hayashi A, Kawabata H, Koizumi K, Masuda S, Teshima S, Takahashi K, Katanuma A, Omori Y, Iwano H, Yamada M, Yokochi T, Asahara S, Kawakubo K, Kuwatani M, Sakamoto N, Enomoto K, Goto T, Sasajima J, Fujiya M, Ueda J, Matsumoto S, Taniue K, Sugitani A, Karasaki H, Okumura T. Digital PCR-based plasma cell-free DNA mutation analysis for early-stage pancreatic tumor diagnosis and surveillance. J Gastroenterol 2020; 55:1183-1193. [PMID: 32939577 DOI: 10.1007/s00535-020-01724-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/17/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Cell-free DNA (cfDNA) shed from tumors into the circulation offers a tool for cancer detection. Here, we evaluated the feasibility of cfDNA measurement and utility of digital PCR (dPCR)-based assays, which reduce subsampling error, for diagnosing pancreatic ductal adenocarcinoma (PDA) and surveillance of intraductal papillary mucinous neoplasm (IPMN). METHODS We collected plasma from seven institutions for cfDNA measurements. Hot-spot mutations in KRAS and GNAS in the cfDNA from patients with PDA (n = 96), undergoing surveillance for IPMN (n = 112), and normal controls (n = 76) were evaluated using pre-amplification dPCR. RESULTS Upon Qubit measurement and copy number assessment of hemoglobin-subunit (HBB) and mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 1 (MT-ND1) in plasma cfDNA, HBB offered the best resolution between patients with PDA relative to healthy subjects [area under the curve (AUC) 0.862], whereas MT-ND1 revealed significant differences between IPMN and controls (AUC 0.851). DPCR utilizing pre-amplification cfDNA afforded accurate tumor-derived mutant KRAS detection in plasma in resectable PDA (AUC 0.861-0.876) and improved post-resection recurrence prediction [hazard ratio (HR) 3.179, 95% confidence interval (CI) 1.025-9.859] over that for the marker CA19-9 (HR 1.464; 95% CI 0.674-3.181). Capturing KRAS and GNAS could also provide genetic evidence in patients with IPMN-associated PDA and undergoing pancreatic surveillance. CONCLUSIONS Plasma cfDNA quantification by distinct measurements is useful to predict tumor burden. Through appropriate methods, dPCR-mediated mutation detection in patients with localized PDA and IPMN likely to progress to invasive carcinoma is feasible and complements conventional biomarkers.
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Affiliation(s)
- Tetsuhiro Okada
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Yusuke Mizukami
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan.
| | - Yusuke Ono
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hiroki Sato
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Akihiro Hayashi
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hidemasa Kawabata
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Kazuya Koizumi
- Center for Gastroenterology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Sakue Masuda
- Center for Gastroenterology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Shinichi Teshima
- Department of Pathology, Shonan Kamakura General Hospital, Kamakura, Japan
| | | | - Akio Katanuma
- Center for Gastroenterology, Teine-Keijinkai Hospital, Sapporo, Japan
| | - Yuko Omori
- Department of Pathology, Teine-Keijinkai Hospital, Sapporo, Japan
| | - Hirotoshi Iwano
- Department of Gastroenterology and Endoscopic Unit, Shibetsu City Hospital, Shibetsu, Japan
| | - Masataka Yamada
- Department of Gastroenterology and Endoscopic Unit, Shibetsu City Hospital, Shibetsu, Japan
| | - Tomoki Yokochi
- Department of Clinical Research, Chiba Tokushukai Hospital, Funabashi, Japan
| | - Shingo Asahara
- Department of Clinical Research, Chiba Tokushukai Hospital, Funabashi, Japan
| | - Kazumichi Kawakubo
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Masaki Kuwatani
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Katsuro Enomoto
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Takuma Goto
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Junpei Sasajima
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Mikihiro Fujiya
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
| | - Jun Ueda
- Center for Advanced Research and Education, Asahikawa Medical University, Asahikawa, Japan
| | - Seiji Matsumoto
- Center for Advanced Research and Education, Asahikawa Medical University, Asahikawa, Japan
| | - Kenzui Taniue
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Ayumu Sugitani
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Toshikatsu Okumura
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, 2-1 Midorigaoka Higashi, Asahikawa, Hokkaido, 078-8510, Japan
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Okada T, Koseki M, Inui H, Kanno K, Saga A, Ohama T, Nishida M, Yamashita S, Sakata Y. Prevalence of coronary artery disease and achievement of low-density lipoprotein cholesterol management targets in familial hypercholesterolemia patients at Osaka University Hospital. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Koseki M, Kanno K, Saga A, Chang J, Inui H, Okada T, Ohama T, Nishida M, Kamada Y, Miyoshi E, Yamashita S, Sakata Y. Immunometabolic disorder in cardiovascular system and liver mediated by long-term exposure to diet-derived oxidized cholesterol, 7-ketocholesterol. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Okada T, Tsushima R, Taya S, Saito E, Takagi W, Sogo M, Ugawa S, Nosaka K, Takahashi M, Okawa K, Sakane K, Miyoshi T, Ito H, Doi M. Feasibility and safety of early initiation of a PCSK9 (proprotein convertase subtilisin/kexin type 9) inhibitor in patients with acute myocardial infarction undergoing primary PCI. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recent ESC/EAS Guidelines for the management of dyslipidemia stated that the treatment goal of LDL cholesterol (LDL-C) in very high-risk patients is less than 55mg/dl. PCSK9 inhibitors in addition to strong statins could be a useful strategy for rapid and aggressive lowering of LDL-C. However, the feasibility and safety of early initiation of a PCSK9 inhibitor for AMI patients undergoing primary PCI remain unclear.
Objectives
We examined the effects of early initiation of a PCSK9 inhibitor, evolocumab, on lipid profile and inflammatory markers and its safety in AMI patients undergoing primary PCI.
Methods
This study is a single center, randomized, controlled trial involving 102 patients hospitalized for AMI. The patients were randomly assigned 1:1 to the evolocumab group and the control group. Evolocumab (140 mg) was subcutaneously injected within 24 hours after PCI and then every two weeks. All patients received pitavastatin (2mg/day) in addition to the allocated treatment. The primary endpoints were changes in lipid profile and inflammatory markers from baseline to 4 weeks.
Results
102 patients were enrolled between October 2017 and December 2019. 89 patients were ST-segment elevation myocardial infarction (STEMI), 13 patients were non-STEMI. Primary PCI was successfully performed in all patients. 76 patients were statin-naïve. 2 patients were excluded from analyses because they died severe heart failure in acute phase. Finally, 100 patients (evolocumab; n=51 and control; n=49) were analyzed. Baseline LDL-C was 121.6±30.3 mg/dl in the evolocumab group and 124.7±33.6 mg in the control group. Change in LDL-C from the baseline to 4 weeks was −92.4±32.4 mg/dl (−75%) in the evolocumab group and −44.8±32.1 mg/dl (−33.1%) in the control group (mean difference; 47.6mg/dl, 95% CI; 34.8 to 60.4 mg/dl, p<0.001). LDL-C <70mg/dl at 4 weeks was achieved in 96.0% of the evolocumab group as compared with 26.5% of the control group. Further, in the evolocumab group. LDL <55mg/dl was achieved in 92.1% at 2 weeks and 92.1% at 4 weeks. Regarding inflammatory markers, there were no significant difference in change in high-sensitivity C-reactive protein (p=0.49) and tumor necrosis factor-alpha (p=0.63) between two groups even after adjustment of baseline value. No adverse event associated with evolocumab was observed during this study.
Conclusion
In patients with AMI undergoing primary PCI, early initiation of evolocumab rapidly reduced LDL-C without no adverse event, and achieved LDL-C<55mg/dl in most patients within 2 weeks. Early administration of a PCSK9 inhibitor combined with a strong statin could be a feasible and safe treatment for AMI patients undergoing PCI.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Okada
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - R Tsushima
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - S Taya
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - E Saito
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - W Takagi
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - M Sogo
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - S Ugawa
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - K Nosaka
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - M Takahashi
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - K Okawa
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - K Sakane
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
| | - T Miyoshi
- Okayama University, Department of Cardiovascular Medicine, Okayama, Japan
| | - H Ito
- Okayama University, Department of Cardiovascular Medicine, Okayama, Japan
| | - M Doi
- Kagawa Prefectural Central Hospital, Dapartment of Cardiology, Takamatsu, Japan
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Kawada K, Hida K, Takahashi R, Okada T, Sakai Y. Laparoscopic abdominoperineal excision following revascularization of the iliac vessels - a video vignette. Colorectal Dis 2020; 22:1200. [PMID: 32190966 DOI: 10.1111/codi.15042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 02/22/2020] [Indexed: 12/13/2022]
Affiliation(s)
- K Kawada
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Hida
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - R Takahashi
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Okada
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Sakai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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26
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Ono Y, Hayashi A, Maeda C, Suzuki M, Wada R, Sato H, Kawabata H, Okada T, Goto T, Karasaki H, Mizukami Y, Okumura T. Time-saving method for directly amplifying and capturing a minimal amount of pancreatic tumor-derived mutations from fine-needle aspirates using digital PCR. Sci Rep 2020; 10:12332. [PMID: 32704002 PMCID: PMC7378187 DOI: 10.1038/s41598-020-69221-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 06/23/2020] [Indexed: 02/08/2023] Open
Abstract
It is challenging to secure a cytopathologic diagnosis using minute amounts of tumor fluids and tissue fragments. Hence, we developed a rapid, accurate, low-cost method for detecting tumor cell-derived DNA from limited amounts of specimens and samples with a low tumor cellularity, to detect KRAS mutations in pancreatic ductal carcinomas (PDA) using digital PCR (dPCR). The core invention is based on the suspension of tumor samples in pure water, which causes an osmotic burst; the crude suspension could be directly subjected to emulsion PCR in the platform. We examined the feasibility of this process using needle aspirates from surgically resected pancreatic tumor specimens (n = 12). We successfully amplified and detected mutant KRAS in 11 of 12 tumor samples harboring the mutation; the positive mutation frequency was as low as 0.8%. We used residual specimens from fine-needle aspiration/biopsy and needle flush processes (n = 10) for method validation. In 9 of 10 oncogenic KRAS pancreatic tumor samples, the "water-burst" method resulted in a positive mutation call. We describe a dPCR-based, super-sensitive screening protocol for determining KRAS mutation availability using tiny needle aspirates from PDAs processed using simple steps. This method might enable pathologists to secure a more accurate, minimally invasive diagnosis using minute tissue fragments.
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Affiliation(s)
- Yusuke Ono
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Akihiro Hayashi
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Chiho Maeda
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Mayumi Suzuki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Reona Wada
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Hiroki Sato
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hidemasa Kawabata
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Tetsuhiro Okada
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Takuma Goto
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan
| | - Yusuke Mizukami
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, 065-0033, Japan.
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan.
| | - Toshikatsu Okumura
- Division of Gastroenterology and Hepatology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
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27
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Sato H, Sasajima J, Okada T, Hayashi A, Kawabata H, Goto T, Koizumi K, Tamamura N, Tanabe H, Fujiya M, Chiba SI, Tanino M, Ono Y, Mizukami Y, Okumura T. Resection for pancreatic cancer metastases contributes to survival: A case report with sequential tumor genotype profiling during the long-term postoperative course. Medicine (Baltimore) 2020; 99:e20564. [PMID: 32569179 PMCID: PMC7310851 DOI: 10.1097/md.0000000000020564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Surgical management is not a standard treatment option for metastatic recurrence of pancreatic adenocarcinoma. However, the surgical management of a solitary metastasis is useful in selected cases. PATIENT CONCERNS A 42-year-old woman was referred to our hospital on account of epigastric pain associated with a mass in the pancreatic body. The patient had a family history of branch duct-type intraductal papillary mucinous neoplasm of the pancreas. DIAGNOSIS The patient was diagnosed with pancreatic ductal adenocarcinoma (PDA) complicated with pancreatitis due to pancreatic duct involvement. INTERVENTIONS The patient underwent distal pancreatectomy, and pathological examination revealed a tubular adenocarcinoma. Solitary liver and lung metastatic tumors were found 6 and 43 months after the initial presentation, respectively, and sequential metastasectomies were performed. OUTCOMES The patient survived until 8 years after her initial presentation. The genetic profiles of the resected specimens, primary PDA, and recurrent tumors in the liver and lung possessed identical KRAS mutations at codon 12, whereas there were no mutations in the main tumor suppressor genes, such as TP53, CDKN2A, and SMAD4. Multiplex polymerase chain reaction-based microsatellite instability assay demonstrated microsatellite stability. CONCLUSION In our case, the patient with pancreatic adenocarcinoma survived for over 8 years following the resection of the primary tumor and resections of metachronous metastatic tumors. The outcome of PDA may be associated with the genetic profile that regulates its biological behavior. Operative management of solitary metastatic tumors may be a therapeutic options for selected patients with pancreatic cancer.
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Affiliation(s)
| | | | | | | | | | | | - Kazuya Koizumi
- Department of Medicine
- Present address: Gastroenterology Medicine Center, Shonan Kamakura General Hospital, Kanagawa, Japan
| | | | | | | | | | - Mishie Tanino
- Department of Surgical Pathology, Asahikawa Medical University, Asahikawa
| | - Yusuke Ono
- Department of Medicine
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo
| | - Yusuke Mizukami
- Department of Medicine
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo
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28
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Tachibana S, Mizukami Y, Ono Y, Sugiyama Y, Okada T, Kitazaki A, Sasajima J, Tominaga M, Sakamoto J, Kimura K, Omori Y, Furukawa T, Kimura T, Tanaka S, Nagashima K, Karasaki H, Ohta T, Okumura T. Genetic Tracing of Clonal Expansion and Progression of Pancreatic Ductal Adenocarcinoma: A Case Report and Multi-Region Sequencing Analysis. Front Oncol 2020; 10:728. [PMID: 32582528 PMCID: PMC7280449 DOI: 10.3389/fonc.2020.00728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 04/16/2020] [Indexed: 11/13/2022] Open
Abstract
Pancreatobiliary tumors frequently contain multiple malignant and precancerous lesions; however, the origin of the driver mutations and the mechanisms that underlie the generation of distinct clones within an organ field remain unclear. Herein, we describe a 76-year-old male suffering from moderately differentiated adenocarcinomas of the pancreas that primarily involved the distal bile duct and multiple “dispersing” invasive lesions in the pancreatic head. The patient underwent pylorus-preserving pancreaticoduodenectomy with superior mesenteric vein resection, and targeted sequencing of 18 genes associated with pancreatic tumorigenesis and immunohistochemical analysis of RNF43 and ARID1A were performed on each tumor compartment, including the invasive and non-invasive areas. Multi-region sequencing revealed shared KRAS and TGFBR1 mutations in all invasive foci, including those involving the distal bile duct. Distinct KRAS variants were found to be present in other non-continuous and non-invasive lesions in the pancreas. Intraductal lesions with KRAS G12D and RNF43 V50R mutations were evident in the main pancreatic duct. This appeared to be a founder clone, given that the mutation profile was common to the invasive foci as well as the additional high-grade dysplasia harboring ARID1A mutations, thereby suggesting a clonal branch-off during tumor evolution. In addition, we also observed independent intraductal papillary mucinous neoplasms with KRAS G12V and GNAS R201H mutations. Our theory, learned from this patient, was that lesions skipped dissemination and wide-spread movement potentially through the pancreatic ductal system as a process of pancreatic cancer development.
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Affiliation(s)
- Shion Tachibana
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yusuke Mizukami
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yusuke Ono
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Yuya Sugiyama
- Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Tetsuhiro Okada
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Arisa Kitazaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Junpei Sasajima
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan.,Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Motoya Tominaga
- Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Jun Sakamoto
- Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Keisuke Kimura
- Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Yuko Omori
- Department of Investigative Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toru Furukawa
- Department of Investigative Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Taichi Kimura
- Department of Pathology, National Hospital Organization Hokkaido Medical Center, Sapporo, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kazuo Nagashima
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Tomoyuki Ohta
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Toshikatsu Okumura
- Center for Gastroenterology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
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29
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Morota T, Sugita S, Cho Y, Kanamaru M, Tatsumi E, Sakatani N, Honda R, Hirata N, Kikuchi H, Yamada M, Yokota Y, Kameda S, Matsuoka M, Sawada H, Honda C, Kouyama T, Ogawa K, Suzuki H, Yoshioka K, Hayakawa M, Hirata N, Hirabayashi M, Miyamoto H, Michikami T, Hiroi T, Hemmi R, Barnouin OS, Ernst CM, Kitazato K, Nakamura T, Riu L, Senshu H, Kobayashi H, Sasaki S, Komatsu G, Tanabe N, Fujii Y, Irie T, Suemitsu M, Takaki N, Sugimoto C, Yumoto K, Ishida M, Kato H, Moroi K, Domingue D, Michel P, Pilorget C, Iwata T, Abe M, Ohtake M, Nakauchi Y, Tsumura K, Yabuta H, Ishihara Y, Noguchi R, Matsumoto K, Miura A, Namiki N, Tachibana S, Arakawa M, Ikeda H, Wada K, Mizuno T, Hirose C, Hosoda S, Mori O, Shimada T, Soldini S, Tsukizaki R, Yano H, Ozaki M, Takeuchi H, Yamamoto Y, Okada T, Shimaki Y, Shirai K, Iijima Y, Noda H, Kikuchi S, Yamaguchi T, Ogawa N, Ono G, Mimasu Y, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Nakazawa S, Terui F, Tanaka S, Yoshikawa M, Saiki T, Watanabe S, Tsuda Y. Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution. Science 2020; 368:654-659. [DOI: 10.1126/science.aaz6306] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 04/02/2020] [Indexed: 11/02/2022]
Affiliation(s)
- T. Morota
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
- Departments of Earth and Environmental Sciences and Physics, Nagoya University, Nagoya 464-8601, Japan
| | - S. Sugita
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y. Cho
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M. Kanamaru
- Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan
| | - E. Tatsumi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
- Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
- Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain
| | - N. Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R. Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - N. Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H. Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M. Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y. Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - S. Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - M. Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H. Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - C. Honda
- School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T. Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - K. Ogawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
- JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H. Suzuki
- Department of Physics, Meiji University, Kawasaki 214-8571, Japan
| | - K. Yoshioka
- Department of Complexity Science and Engineering, The University of Tokyo, Kashiwa 277-8561, Japan
| | - M. Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N. Hirata
- School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - M. Hirabayashi
- Department of Aerospace Engineering, Auburn University, Auburn, AL 36849, USA
| | - H. Miyamoto
- Department of Systems Innovation, The University of Tokyo, Tokyo 113-8656, Japan
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - T. Michikami
- Faculty of Engineering, Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - T. Hiroi
- Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI 02912, USA
| | - R. Hemmi
- The University Museum, The University of Tokyo, Tokyo 113-0033, Japan
| | - O. S. Barnouin
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - C. M. Ernst
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - K. Kitazato
- School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T. Nakamura
- Department of Earth Science, Tohoku University, Sendai 980-8578, Japan
| | - L. Riu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H. Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H. Kobayashi
- Departments of Earth and Environmental Sciences and Physics, Nagoya University, Nagoya 464-8601, Japan
| | - S. Sasaki
- Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan
| | - G. Komatsu
- International Research School of Planetary Sciences, Università d’Annunzio, 65127 Pescara, Italy
| | - N. Tanabe
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y. Fujii
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - T. Irie
- Departments of Earth and Environmental Sciences and Physics, Nagoya University, Nagoya 464-8601, Japan
| | - M. Suemitsu
- Departments of Earth and Environmental Sciences and Physics, Nagoya University, Nagoya 464-8601, Japan
| | - N. Takaki
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - C. Sugimoto
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K. Yumoto
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - M. Ishida
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - H. Kato
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - K. Moroi
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - D. Domingue
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - P. Michel
- Université Côte d’Azur, Observatoire de la Côte d’Azur, Centre National de le Recherche Scientifique, Laboratoire Lagrange, 06304 Nice, France
| | - C. Pilorget
- Institut d’Astrophysique Spatiale, Université Paris-Sud, 91405 Orsay, France
| | - T. Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M. Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M. Ohtake
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y. Nakauchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K. Tsumura
- Department of Natural Science, Faculty of Science and Engineering, Tokyo City University, Tokyo 158-8557, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - H. Yabuta
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Y. Ishihara
- National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - R. Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K. Matsumoto
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - A. Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - N. Namiki
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S. Tachibana
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M. Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H. Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - K. Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T. Mizuno
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - C. Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S. Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - O. Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T. Shimada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S. Soldini
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L69 3BX, UK
| | - R. Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H. Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M. Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - H. Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - Y. Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T. Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y. Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K. Shirai
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y. Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H. Noda
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S. Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T. Yamaguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N. Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - G. Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - Y. Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K. Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T. Takahashi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y. Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - A. Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S. Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F. Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S. Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M. Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T. Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S. Watanabe
- Departments of Earth and Environmental Sciences and Physics, Nagoya University, Nagoya 464-8601, Japan
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y. Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
- Departments of Space and Astronautical Science and Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
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30
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Arakawa M, Saiki T, Wada K, Ogawa K, Kadono T, Shirai K, Sawada H, Ishibashi K, Honda R, Sakatani N, Iijima Y, Okamoto C, Yano H, Takagi Y, Hayakawa M, Michel P, Jutzi M, Shimaki Y, Kimura S, Mimasu Y, Toda T, Imamura H, Nakazawa S, Hayakawa H, Sugita S, Morota T, Kameda S, Tatsumi E, Cho Y, Yoshioka K, Yokota Y, Matsuoka M, Yamada M, Kouyama T, Honda C, Tsuda Y, Watanabe S, Yoshikawa M, Tanaka S, Terui F, Kikuchi S, Yamaguchi T, Ogawa N, Ono G, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Takeuchi H, Yamamoto Y, Okada T, Hirose C, Hosoda S, Mori O, Shimada T, Soldini S, Tsukizaki R, Iwata T, Ozaki M, Abe M, Namiki N, Kitazato K, Tachibana S, Ikeda H, Hirata N, Hirata N, Noguchi R, Miura A. An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime. Science 2020; 368:67-71. [PMID: 32193363 DOI: 10.1126/science.aaz1701] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 03/04/2020] [Indexed: 11/02/2022]
Abstract
The Hayabusa2 spacecraft investigated the small asteroid Ryugu, which has a rubble-pile structure. We describe an impact experiment on Ryugu using Hayabusa2's Small Carry-on Impactor. The impact produced an artificial crater with a diameter >10 meters, which has a semicircular shape, an elevated rim, and a central pit. Images of the impact and resulting ejecta were recorded by the Deployable CAMera 3 for >8 minutes, showing the growth of an ejecta curtain (the outer edge of the ejecta) and deposition of ejecta onto the surface. The ejecta curtain was asymmetric and heterogeneous and it never fully detached from the surface. The crater formed in the gravity-dominated regime; in other words, crater growth was limited by gravity not surface strength. We discuss implications for Ryugu's surface age.
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Affiliation(s)
- M Arakawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - K Ogawa
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.,JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Kadono
- Department of Basic Sciences, University of Occupational and Environmental Health, Kitakyusyu 807-8555, Japan
| | - K Shirai
- Department of Planetology, Kobe University, Kobe 657-8501, Japan.,Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Ishibashi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - R Honda
- Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - C Okamoto
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Takagi
- Department of Regional Business, Aichi Toho University, Nagoya 465-8515, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - P Michel
- Observatoire de la Côte d'Azur, Université Côte d'Azur, CNRS, Laboratoire Lagrange, CS34229, 06304 Nice Cedex 4, France
| | - M Jutzi
- Physics Institute, University of Bern, National Centre of Competence in Research PlanetS, Gesellschaftsstrasse 6, 3012, Bern, Switzerland
| | - Y Shimaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Kimura
- Department of Electrical Engineering, Tokyo University of Science, Noda 278-8510, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Toda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Imamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Hayakawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Sugita
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.,Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Morota
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - S Kameda
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - E Tatsumi
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.,Instituto de Astrofísica de Canarias, University of La Laguna, 38205 San Cristóbal de La Laguna, Spain
| | - Y Cho
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Yoshioka
- Department of Complexity Science and Engineering, The University of Tokyo, Kashiwa 277-8561, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Information Science, Kochi University, Kochi 780-8520, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - C Honda
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Watanabe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - F Terui
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - C Hirose
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - S Soldini
- Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L3 5TQ, UK
| | - R Tsukizaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - M Abe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
| | - K Kitazato
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - S Tachibana
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Ikeda
- Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - N Hirata
- School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Department of Planetology, Kobe University, Kobe 657-8501, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - A Miura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan
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31
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Jaumann R, Schmitz N, Ho TM, Schröder SE, Otto KA, Stephan K, Elgner S, Krohn K, Preusker F, Scholten F, Biele J, Ulamec S, Krause C, Sugita S, Matz KD, Roatsch T, Parekh R, Mottola S, Grott M, Michel P, Trauthan F, Koncz A, Michaelis H, Lange C, Grundmann JT, Maibaum M, Sasaki K, Wolff F, Reill J, Moussi-Soffys A, Lorda L, Neumann W, Vincent JB, Wagner R, Bibring JP, Kameda S, Yano H, Watanabe S, Yoshikawa M, Tsuda Y, Okada T, Yoshimitsu T, Mimasu Y, Saiki T, Yabuta H, Rauer H, Honda R, Morota T, Yokota Y, Kouyama T. Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites. Science 2020; 365:817-820. [PMID: 31439797 DOI: 10.1126/science.aaw8627] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 07/23/2019] [Indexed: 11/02/2022]
Abstract
The near-Earth asteroid (162173) Ryugu is a 900-m-diameter dark object expected to contain primordial material from the solar nebula. The Mobile Asteroid Surface Scout (MASCOT) landed on Ryugu's surface on 3 October 2018. We present images from the MASCOT camera (MASCam) taken during the descent and while on the surface. The surface is covered by decimeter- to meter-sized rocks, with no deposits of fine-grained material. Rocks appear either bright, with smooth faces and sharp edges, or dark, with a cauliflower-like, crumbly surface. Close-up images of a rock of the latter type reveal a dark matrix with small, bright, spectrally different inclusions, implying that it did not experience extensive aqueous alteration. The inclusions appear similar to those in carbonaceous chondrite meteorites.
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Affiliation(s)
- R Jaumann
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany. .,Free University of Berlin, Institute of Geosciences, Berlin, Germany
| | - N Schmitz
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - T-M Ho
- DLR, Institute of Space Systems, Bremen, Germany
| | - S E Schröder
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - K A Otto
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - K Stephan
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - S Elgner
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - K Krohn
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - F Preusker
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - F Scholten
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - J Biele
- DLR, Microgravity User Support Center, Linder Höhe, Cologne, Germany
| | - S Ulamec
- DLR, Microgravity User Support Center, Linder Höhe, Cologne, Germany
| | - C Krause
- DLR, Microgravity User Support Center, Linder Höhe, Cologne, Germany
| | - S Sugita
- Department of Earth and Planetary Science, School of Science, University of Tokyo, Tokyo 113-0033, Japan
| | - K-D Matz
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - T Roatsch
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - R Parekh
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany.,Free University of Berlin, Institute of Geosciences, Berlin, Germany
| | - S Mottola
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - M Grott
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de la Recherche Scientifique, Laboratoire Lagrange, Nice, France
| | - F Trauthan
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - A Koncz
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - H Michaelis
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - C Lange
- DLR, Institute of Space Systems, Bremen, Germany
| | | | - M Maibaum
- DLR, Microgravity User Support Center, Linder Höhe, Cologne, Germany
| | - K Sasaki
- DLR, Institute of Space Systems, Bremen, Germany
| | - F Wolff
- DLR, Institute of System Dynamics and Control, Oberpfaffenhofen, Germany
| | - J Reill
- DLR, Institute of Robotics and Mechatronics, Oberpfaffenhofen, Germany
| | - A Moussi-Soffys
- Centre National d'Études Spatiales, 18 Avenue E. Belin, Toulouse 31401, France
| | - L Lorda
- Centre National d'Études Spatiales, 18 Avenue E. Belin, Toulouse 31401, France
| | - W Neumann
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - J-B Vincent
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - R Wagner
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany
| | - J-P Bibring
- L'Université de Paris Sud-Orsay, Institut d'Astrophysique Spatiale, Orsay, France
| | - S Kameda
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - H Yano
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - S Watanabe
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan.,Department of Earth and Planetary Sciences, Nagoya University Furo-cho Chikusa-ku, Nagoya, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Yoshimitsu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Saiki
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - H Yabuta
- Department of Earth and Planetary Systems Science, Hiroshima University, Hiroshima, Japan
| | - H Rauer
- German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany.,Free University of Berlin, Institute of Geosciences, Berlin, Germany
| | - R Honda
- Kochi University, Department of Information Science, Akebono, Kochi, Japan
| | - T Morota
- University of Tokyo, Department of Earth and Planetary Science, Hongo, Bunkyo, Tokyo, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Aomi, Koto, Tokyo, Japan
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Adachi S, Hattori M, Kanno F, Kiuchi K, Okada T, Tajima O. Production method of millimeter-wave absorber with 3D-printed mold. Rev Sci Instrum 2020; 91:016103. [PMID: 32012552 DOI: 10.1063/1.5132871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
We established a production method of a millimeter-wave absorber by using a 3D-printed mold. The mold has a periodic pyramid shape, and an absorptive material is filled into the mold. This shape reduces the surface reflection. The 3D-printed mold is made from a transparent material in the millimeter-wave range. Therefore, unmolding is not necessary. A significant benefit of this production method is easy prototyping with various shapes and various absorptive materials. We produced a test model and used a two-component epoxy encapsulant as the absorptive material. The test model achieved a low reflectance: ∼1% at 100 GHz. The absorber is sometimes maintained at a low temperature condition for cases in which superconducting detectors are used. Therefore, cryogenic performance is required in terms of a mechanical strength for the thermal cycles, an adhesive strength, and a sufficient thermal conductivity. We confirmed the test-model strength by immersing the model into a liquid-nitrogen bath.
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Affiliation(s)
- S Adachi
- Division of Physics and Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - M Hattori
- Astronomical Institute, Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - F Kanno
- Astronomical Institute, Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - K Kiuchi
- Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Okada
- Astronomical Institute, Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - O Tajima
- Division of Physics and Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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Kawabata H, Miyazawa Y, Sato H, Okada T, Hayashi A, Iwama T, Fujibayashi S, Goto T, Sasajima J, Takauji S, Fujiya M, Torimoto Y, Tanino M, Omori Y, Ono Y, Karasaki H, Mizukami Y, Okumura T. Genetic analysis of postoperative recurrence of pancreatic cancer potentially owing to needle tract seeding during EUS-FNB. Endosc Int Open 2019; 7:E1768-E1772. [PMID: 31828215 PMCID: PMC6904237 DOI: 10.1055/a-1034-7700] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/09/2019] [Indexed: 02/08/2023] Open
Abstract
Background and study aims Needle tract seeding during endoscopic ultrasound fine-needle biopsy (EUS-FNB) remains a concern. We investigated whether such seeding occurred in a patient with pancreatic ductal adenocarcinoma (PDA). Patient and methods Surgically resected and EUS-FNB-derived specimens were genotyped to determine if a gastric wall tumor that emerged 3 years after curative resection of an early-stage PDA was clonally related to the original tumor. Results The gastric tumor histologically resembled the primary PDA; the lesions also shared KRAS , SMAD4 , and RNF43 mutations. Genotyping of the preoperative EUS-FNB specimen, in which cancer was not detected, nevertheless revealed mutations that were identical to those in the resected primary and recurrent tumors. While the primary PDA had a low frequency of mutant SMAD4 , such mutations were highly prevalent in both the EUS-FNB and recurrent tumor specimens. Conclusions The genetic lineages of sampled tissues from our patient revealed that needle tract seeding may have incidentally occurred when a subset of neoplastic cells within a heterogeneous tumor ( i. e. , an aggressive clone) was targeted during EUS-FNB.
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Affiliation(s)
| | | | | | - Tetsuhiro Okada
- Department of Medicine
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan
| | | | | | | | | | | | | | | | | | - Mishie Tanino
- Department of Surgical Pathology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Yuko Omori
- Department of Investigative Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yusuke Ono
- Department of Medicine
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan
| | - Yusuke Mizukami
- Department of Medicine
- Institute of Biomedical Research, Sapporo-Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan
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Endo A, Okada T, Kagawa Y, Sato H, Morita Y, Pak M, Ouchi T, Watanabe N, Yamaguchi K, Yoshitomi H, Tanabe K. P642What is the most important residual risk after achievement of appropriate low-density lipoprotein cholesterol lowering therapy in secondary prevention of Japanese patients? Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
In secondary prevention of coronary artery disease, target value of low-density lipoprotein cholesterol (LDL-C) <100mg/dL with using statins is recommended as standard therapy in Japanese guideline. However, impact of residual risks after achievement of standard LDL-C lowering therapy was not fully examined. Furthermore, there is little information whether more strict management of LDL-C lowering is effective to prevent long-term cardiovascular events than standard management.
Purpose
The purpose of this study was to evaluate the relationship between residual risks after achievement of standard LDL-C lowering therapy and long-term coronary events in secondary prevention of Japanese patients.
Methods
From January 2007 to August 2018, 333 patients with previous percutaneous coronary intervention underwent late coronary angiography to examine recurrence of cardiac ischemia beyond the early phase of restenosis. We defined appropriate LDL-C lowering therapy as achieved LDL-C <100mg/dL with using statins. Patients whose achieved LDL-C was <100mg/dL with using statins were classified as Appropriate-group (n=139), and patients who were not using statins or whose achieved LDL-C was ≥100mg/dL were classified as Inappropriate-group (n=194). Endpoints of the study were recurrence of cardiac ischemia as acute coronary syndrome (recurrence-ACS) and any late coronary revascularization.
Results
During average 7.1 years follow-up, 195 patients (59%) underwent any late coronary revascularization. In 91 of those patients, clinical presentation of recurrence-ACS was observed. Kaplan-Meier curve analysis revealed that the incidence of recurrence-ACS and any late coronary revascularization were significantly lower in Appropriate-group than in Inappropriate-group (p=0.017 and p<0.001, respectively). In Appropriate-group, recurrence-ACS was significantly lower in patients with achieved LDL-C <70mg/dL than in those with LDL-C 70 to <100mg/dL (p=0.042), however, any late revascularization was not different between the two groups. On the other hand, in Inappropriate-group, recurrence-ACS was significantly lower in patients with using statins than in those without using statins (p=0.038), and any late revascularization was less frequent in patients with achieved LDL-C <100mg/dL than in those with LDL-C ≥100mg/dL (p=0.035). Moreover, multivariate analysis identified that only LDL-C was an independent predictor of recurrence-ACS in Appropriate-group (HR: 1.047, p=0.006), in contrast, LDL-C (HR: 1.008, p=0.020), using statins (HR: 0.555, p=0.034) and triglyceride (HR: 1.003, p=0.038) were independent predictors of recurrence-ACS in Inappropriate-group.
Conclusions
LDL-C was the most important residual risk of recurrence-ACS even after recommended standard therapy has been achieved. More strict management of LDL-C targeting to <70mg/dL should be considered in secondary prevention of Japanese patients.
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Affiliation(s)
- A Endo
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - T Okada
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - Y Kagawa
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - H Sato
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - Y Morita
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - M Pak
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - T Ouchi
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - N Watanabe
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | - K Yamaguchi
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
| | | | - K Tanabe
- Shimane University Faculty of Medicine, Division of Cardiology, Izumo, Japan
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35
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Tamiya Y, Morise M, Matsuzawa R, Tanaka I, Okada T, Iwano S, Hase T, Hashimoto N, Sato M, Itoh Y, Hasegawa Y. P2.18-18 Impact of Combined Evaluation Using Tumor Volume and Metastatic Nodal Extent in Stage III NSCLC Treated with CRT. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Takahashi H, Kawakita D, Fushimi C, Nagao T, Hirai H, Saigusa N, Masubuchi T, Matsuki T, Okada T, Baba D, Miura K, Saotome T, Tada Y. Trastuzumab plus docetaxel in patients with advanced HER2-positive salivary duct carcinoma: Exploratory biomarker analyses. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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37
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Fushimi C, Kawakita D, Takahashi H, Nagao T, Hirai H, Saigusa N, Masubuchi T, Matsuki T, Okada T, Baba D, Miura K, Saotome T, Tada Y. Combined androgen blockade in patients with advanced androgen receptor-positive salivary gland carcinoma: Exploratory biomarker analyses. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Watanabe S, Hirabayashi M, Hirata N, Hirata N, Noguchi R, Shimaki Y, Ikeda H, Tatsumi E, Yoshikawa M, Kikuchi S, Yabuta H, Nakamura T, Tachibana S, Ishihara Y, Morota T, Kitazato K, Sakatani N, Matsumoto K, Wada K, Senshu H, Honda C, Michikami T, Takeuchi H, Kouyama T, Honda R, Kameda S, Fuse T, Miyamoto H, Komatsu G, Sugita S, Okada T, Namiki N, Arakawa M, Ishiguro M, Abe M, Gaskell R, Palmer E, Barnouin OS, Michel P, French AS, McMahon JW, Scheeres DJ, Abell PA, Yamamoto Y, Tanaka S, Shirai K, Matsuoka M, Yamada M, Yokota Y, Suzuki H, Yoshioka K, Cho Y, Tanaka S, Nishikawa N, Sugiyama T, Kikuchi H, Hemmi R, Yamaguchi T, Ogawa N, Ono G, Mimasu Y, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Hirose C, Iwata T, Hayakawa M, Hosoda S, Mori O, Sawada H, Shimada T, Soldini S, Yano H, Tsukizaki R, Ozaki M, Iijima Y, Ogawa K, Fujimoto M, Ho TM, Moussi A, Jaumann R, Bibring JP, Krause C, Terui F, Saiki T, Nakazawa S, Tsuda Y. Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile. Science 2019; 364:268-272. [PMID: 30890588 DOI: 10.1126/science.aav8032] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 03/07/2019] [Indexed: 11/02/2022]
Abstract
The Hayabusa2 spacecraft arrived at the near-Earth carbonaceous asteroid 162173 Ryugu in 2018. We present Hayabusa2 observations of Ryugu's shape, mass, and geomorphology. Ryugu has an oblate "spinning top" shape, with a prominent circular equatorial ridge. Its bulk density, 1.19 ± 0.02 grams per cubic centimeter, indicates a high-porosity (>50%) interior. Large surface boulders suggest a rubble-pile structure. Surface slope analysis shows Ryugu's shape may have been produced from having once spun at twice the current rate. Coupled with the observed global material homogeneity, this suggests that Ryugu was reshaped by centrifugally induced deformation during a period of rapid rotation. From these remote-sensing investigations, we identified a suitable sample collection site on the equatorial ridge.
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Affiliation(s)
- S Watanabe
- Nagoya University, Nagoya 464-8601, Japan. .,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | | | - N Hirata
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Na Hirata
- Kobe University, Kobe 657-8501, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - E Tatsumi
- University of Tokyo, Tokyo 113-0033, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yabuta
- Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - T Nakamura
- Tohoku University, Sendai 980-8578, Japan
| | - S Tachibana
- University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Ishihara
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Morota
- Nagoya University, Nagoya 464-8601, Japan
| | - K Kitazato
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Wada
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Senshu
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - C Honda
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Michikami
- Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - R Honda
- Kochi University, Kochi 780-8520, Japan
| | - S Kameda
- Rikkyo University, Tokyo 171-8501, Japan
| | - T Fuse
- National Institute of Information and Communications Technology, Kashima 314-8501, Japan
| | - H Miyamoto
- University of Tokyo, Tokyo 113-0033, Japan
| | - G Komatsu
- Università d'Annunzio, 65127 Pescara, Italy.,Chiba Institute of Technology, Narashino 275-0016, Japan
| | - S Sugita
- University of Tokyo, Tokyo 113-0033, Japan
| | - T Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,University of Tokyo, Tokyo 113-0033, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Arakawa
- Kobe University, Kobe 657-8501, Japan
| | - M Ishiguro
- Seoul National University, Seoul 08826, Korea
| | - M Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Gaskell
- Planetary Science Institute, Tucson, AZ 85710, USA
| | - E Palmer
- Planetary Science Institute, Tucson, AZ 85710, USA
| | - O S Barnouin
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de la Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - A S French
- University of Colorado, Boulder, CO 80309, USA
| | - J W McMahon
- University of Colorado, Boulder, CO 80309, USA
| | | | - P A Abell
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - Y Yamamoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Shirai
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yamada
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kochi University, Kochi 780-8520, Japan
| | - H Suzuki
- Meiji University, Kawasaki 214-8571, Japan
| | - K Yoshioka
- University of Tokyo, Tokyo 113-0033, Japan
| | - Y Cho
- University of Tokyo, Tokyo 113-0033, Japan
| | - S Tanaka
- Kobe University, Kobe 657-8501, Japan
| | | | - T Sugiyama
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - H Kikuchi
- University of Tokyo, Tokyo 113-0033, Japan
| | - R Hemmi
- University of Tokyo, Tokyo 113-0033, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yano
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Kobe University, Kobe 657-8501, Japan
| | - M Fujimoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T-M Ho
- DLR (German Aerospace Center), Institute of Space Systems, 28359 Bremen, Germany
| | - A Moussi
- Centre National d'Etudes Spatiales (CNES), 31401 Toulouse, France
| | - R Jaumann
- DLR, Institute of Planetary Research, 12489 Berlin-Adlershof, Germany
| | - J-P Bibring
- Institute d'Astrophysique Spatiale, 91405 Orsay, France
| | - C Krause
- DLR, Microgravity User Support Center, 51147 Cologne, Germany
| | - F Terui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
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39
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Kitazato K, Milliken RE, Iwata T, Abe M, Ohtake M, Matsuura S, Arai T, Nakauchi Y, Nakamura T, Matsuoka M, Senshu H, Hirata N, Hiroi T, Pilorget C, Brunetto R, Poulet F, Riu L, Bibring JP, Takir D, Domingue DL, Vilas F, Barucci MA, Perna D, Palomba E, Galiano A, Tsumura K, Osawa T, Komatsu M, Nakato A, Arai T, Takato N, Matsunaga T, Takagi Y, Matsumoto K, Kouyama T, Yokota Y, Tatsumi E, Sakatani N, Yamamoto Y, Okada T, Sugita S, Honda R, Morota T, Kameda S, Sawada H, Honda C, Yamada M, Suzuki H, Yoshioka K, Hayakawa M, Ogawa K, Cho Y, Shirai K, Shimaki Y, Hirata N, Yamaguchi A, Ogawa N, Terui F, Yamaguchi T, Takei Y, Saiki T, Nakazawa S, Tanaka S, Yoshikawa M, Watanabe S, Tsuda Y. The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy. Science 2019; 364:272-275. [PMID: 30890589 DOI: 10.1126/science.aav7432] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/07/2019] [Indexed: 11/02/2022]
Abstract
The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.
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Affiliation(s)
- K Kitazato
- The University of Aizu, Fukushima, Japan.
| | | | - T Iwata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - M Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - M Ohtake
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | | | - T Arai
- Ashikaga University, Tochigi, Japan
| | - Y Nakauchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | | | - M Matsuoka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - H Senshu
- Chiba Institute of Technology, Chiba, Japan
| | - N Hirata
- The University of Aizu, Fukushima, Japan
| | - T Hiroi
- Brown University, Providence, RI, USA
| | - C Pilorget
- Institut d'Astrophysique Spatial, Université Paris-Sud, Orsay, France
| | - R Brunetto
- Institut d'Astrophysique Spatial, Université Paris-Sud, Orsay, France
| | - F Poulet
- Institut d'Astrophysique Spatial, Université Paris-Sud, Orsay, France
| | - L Riu
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - J-P Bibring
- Institut d'Astrophysique Spatial, Université Paris-Sud, Orsay, France
| | - D Takir
- Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, TX, USA
| | | | - F Vilas
- Planetary Science Institute, Tucson, AZ, USA
| | - M A Barucci
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon, France
| | - D Perna
- Osservatorio Astronomico di Roma, Istituto Nazionale di Astrofisica (INAF), Monte Porzio Catone, Italy.,Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Meudon, France
| | - E Palomba
- Istituto di Astrofisica e Planetologia Spaziali, INAF, Roma, Italy
| | - A Galiano
- Istituto di Astrofisica e Planetologia Spaziali, INAF, Roma, Italy
| | - K Tsumura
- Tohoku University, Sendai, Japan.,Tokyo City University, Tokyo, Japan
| | - T Osawa
- Japan Atomic Energy Agency, Ibaraki, Japan
| | - M Komatsu
- The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - A Nakato
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - T Arai
- Chiba Institute of Technology, Chiba, Japan
| | - N Takato
- National Astronomical Observatory of Japan, Tokyo, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - T Matsunaga
- National Institute for Environmental Studies, Ibaraki, Japan
| | - Y Takagi
- Aichi Toho University, Nagoya, Japan
| | - K Matsumoto
- National Astronomical Observatory of Japan, Tokyo, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,Kochi University, Kochi, Japan
| | - E Tatsumi
- The University of Tokyo, Tokyo, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - T Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The University of Tokyo, Tokyo, Japan
| | - S Sugita
- The University of Tokyo, Tokyo, Japan
| | - R Honda
- Kochi University, Kochi, Japan
| | - T Morota
- Nagoya University, Nagoya, Japan
| | | | - H Sawada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - C Honda
- The University of Aizu, Fukushima, Japan
| | - M Yamada
- Chiba Institute of Technology, Chiba, Japan
| | | | | | - M Hayakawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - K Ogawa
- Kobe University, Kobe, Japan
| | - Y Cho
- The University of Tokyo, Tokyo, Japan
| | - K Shirai
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | | | - A Yamaguchi
- National Institute of Polar Research, Tokyo, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - F Terui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - T Yamaguchi
- Mitsubishi Electric Corporation, Kanagawa, Japan
| | - Y Takei
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - T Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
| | - S Watanabe
- Nagoya University, Nagoya, Japan.,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan.,The Graduate University for Advanced Studies (SOKENDAI), Kanagawa, Japan
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40
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Sugita S, Honda R, Morota T, Kameda S, Sawada H, Tatsumi E, Yamada M, Honda C, Yokota Y, Kouyama T, Sakatani N, Ogawa K, Suzuki H, Okada T, Namiki N, Tanaka S, Iijima Y, Yoshioka K, Hayakawa M, Cho Y, Matsuoka M, Hirata N, Hirata N, Miyamoto H, Domingue D, Hirabayashi M, Nakamura T, Hiroi T, Michikami T, Michel P, Ballouz RL, Barnouin OS, Ernst CM, Schröder SE, Kikuchi H, Hemmi R, Komatsu G, Fukuhara T, Taguchi M, Arai T, Senshu H, Demura H, Ogawa Y, Shimaki Y, Sekiguchi T, Müller TG, Hagermann A, Mizuno T, Noda H, Matsumoto K, Yamada R, Ishihara Y, Ikeda H, Araki H, Yamamoto K, Abe S, Yoshida F, Higuchi A, Sasaki S, Oshigami S, Tsuruta S, Asari K, Tazawa S, Shizugami M, Kimura J, Otsubo T, Yabuta H, Hasegawa S, Ishiguro M, Tachibana S, Palmer E, Gaskell R, Le Corre L, Jaumann R, Otto K, Schmitz N, Abell PA, Barucci MA, Zolensky ME, Vilas F, Thuillet F, Sugimoto C, Takaki N, Suzuki Y, Kamiyoshihara H, Okada M, Nagata K, Fujimoto M, Yoshikawa M, Yamamoto Y, Shirai K, Noguchi R, Ogawa N, Terui F, Kikuchi S, Yamaguchi T, Oki Y, Takao Y, Takeuchi H, Ono G, Mimasu Y, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Hirose C, Nakazawa S, Hosoda S, Mori O, Shimada T, Soldini S, Iwata T, Abe M, Yano H, Tsukizaki R, Ozaki M, Nishiyama K, Saiki T, Watanabe S, Tsuda Y. The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes. Science 2019; 364:252. [PMID: 30890587 DOI: 10.1126/science.aaw0422] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/12/2019] [Indexed: 11/02/2022]
Abstract
The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of [Formula: see text] years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.
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Affiliation(s)
- S Sugita
- The University of Tokyo, Tokyo 113-0033, Japan. .,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - R Honda
- Kochi University, Kochi 780-8520, Japan
| | - T Morota
- Nagoya University, Nagoya 464-8601, Japan
| | - S Kameda
- Rikkyo University, Tokyo 171-8501, Japan
| | - H Sawada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - E Tatsumi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - C Honda
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kochi University, Kochi 780-8520, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - N Sakatani
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Kobe University, Kobe 657-8501, Japan
| | - H Suzuki
- Meiji University, Kawasaki 214-8571, Japan
| | - T Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,The University of Tokyo, Tokyo 113-0033, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshioka
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Cho
- The University of Tokyo, Tokyo 113-0033, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Hirata
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Hirata
- Kobe University, Kobe 657-8501, Japan
| | - H Miyamoto
- The University of Tokyo, Tokyo 113-0033, Japan
| | - D Domingue
- Planetary Science Institute, Tucson, AZ 85719, USA
| | | | - T Nakamura
- Tohoku University, Sendai 980-8578, Japan
| | - T Hiroi
- Brown University, Providence, RI 02912, USA
| | - T Michikami
- Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de le Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - R-L Ballouz
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,University of Arizona, Tucson, AZ 85705, USA
| | - O S Barnouin
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - C M Ernst
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - S E Schröder
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - H Kikuchi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - R Hemmi
- The University of Tokyo, Tokyo 113-0033, Japan
| | - G Komatsu
- International Research School of Planetary Sciences, Università d'Annunzio, 65127 Pescara, Italy.,Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - T Fukuhara
- Rikkyo University, Tokyo 171-8501, Japan
| | - M Taguchi
- Rikkyo University, Tokyo 171-8501, Japan
| | - T Arai
- Ashikaga University, Ashikaga 326-8558, Japan
| | - H Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Demura
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Ogawa
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Sekiguchi
- Hokkaido University of Education, Asahikawa 070-8621, Japan
| | - T G Müller
- Max-Planck-Institut für Extraterrestrische Physik, 85748 Garching, Germany
| | - A Hagermann
- University of Stirling, FK9 4LA, Scotland, UK
| | - T Mizuno
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Yamada
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Y Ishihara
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - H Araki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Yamamoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Abe
- Nihon University, Funabashi 274-8501, Japan
| | - F Yoshida
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - A Higuchi
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Sasaki
- Osaka University, Toyonaka 560-0043, Japan
| | - S Oshigami
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Tsuruta
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - K Asari
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - S Tazawa
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - M Shizugami
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - J Kimura
- Osaka University, Toyonaka 560-0043, Japan
| | - T Otsubo
- Hitotsubashi University, Tokyo 186-8601, Japan
| | - H Yabuta
- Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - S Hasegawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ishiguro
- Seoul National University, Seoul 08826, Korea
| | - S Tachibana
- The University of Tokyo, Tokyo 113-0033, Japan
| | - E Palmer
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - R Gaskell
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - L Le Corre
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - R Jaumann
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - K Otto
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - N Schmitz
- German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany
| | - P A Abell
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - M A Barucci
- Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA)-Observatoire de Paris, Paris Sciences et Lettres (PSL), Centre National de le Recherche Scientifique (CNRS), Sorbonne Université, Université Paris-Diderot, 92195 Meudon Principal Cedex, France
| | - M E Zolensky
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - F Vilas
- Planetary Science Institute, Tucson, AZ 85719, USA
| | - F Thuillet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de le Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - C Sugimoto
- The University of Tokyo, Tokyo 113-0033, Japan
| | - N Takaki
- The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Suzuki
- The University of Tokyo, Tokyo 113-0033, Japan
| | | | - M Okada
- The University of Tokyo, Tokyo 113-0033, Japan
| | - K Nagata
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - M Fujimoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Yamamoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Shirai
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - F Terui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Oki
- The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Takao
- The University of Tokyo, Tokyo 113-0033, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - H Yano
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Nishiyama
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Watanabe
- Nagoya University, Nagoya 464-8601, Japan.,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
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41
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Okada T, Iwano H, Ono Y, Karasaki H, Sato T, Yamada M, Omori Y, Sato H, Hayashi A, Kawabata H, Goto T, Sasajima J, Takauji S, Nagashima K, Mizukami Y, Okumura T. Utility of "liquid biopsy" using pancreatic juice for early detection of pancreatic cancer. Endosc Int Open 2018; 6:E1454-E1461. [PMID: 30539069 PMCID: PMC6288761 DOI: 10.1055/a-0721-1747] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/03/2018] [Indexed: 02/08/2023] Open
Abstract
Background Despite advances in the diagnosis of pancreatic ductal adenocarcinoma (PDA), histological evaluation of small and poorly defined masses in the pancreas is uncomfortable and unsafe. Methods We herein report a case of early stage PDA, in which multiple KRAS mutations were detected in the pancreatic juice preoperatively. A small hypoechoic area adjacent to the portal vein was detected through endoscopic ultrasound in the pancreatic body. KRAS mutations were evaluated using plasma, and the pancreatic juice by digital PCR. Results Pancreatic duct biopsy and pancreatic juice cytology were performed with no evidence of malignancy; however, KRAS mutations, KRAS G12V and G12D, were detected in the pancreatic juice. Histological assessment of the resected specimen demonstrated a solid tumor with desmoplastic reaction accompanied by carcinoma in situ in the main pancreatic duct where KRAS G12V mutation was identified. More detailed analysis demonstrated KRAS G12D mutation in the cluster of low grade pancreatic intraepithelial neoplasia, implying that the lesion developed independently. Conclusions Our study indicates the potential of "endoscopic liquid biopsy" to capture the driver gene for PDA diagnosis.
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Affiliation(s)
- Tetsuhiro Okada
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Hirotoshi Iwano
- Department of Gastroenterology and Endoscopic Unit, Shibetsu City Hospital, Shibetsu, Hokkaido 095-0048, Japan
| | - Yusuke Ono
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Hidenori Karasaki
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
- Department of Surgery, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Takayuki Sato
- Department of Gastroenterology and Endoscopic Unit, Shibetsu City Hospital, Shibetsu, Hokkaido 095-0048, Japan
| | - Masataka Yamada
- Department of Gastroenterology and Endoscopic Unit, Shibetsu City Hospital, Shibetsu, Hokkaido 095-0048, Japan
| | - Yuko Omori
- Department of Histopathology, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8575, Japan
| | - Hiroki Sato
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Akihiro Hayashi
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Hidemasa Kawabata
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Takuma Goto
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Junpei Sasajima
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Shuhei Takauji
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Kazuo Nagashima
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
| | - Yusuke Mizukami
- Institute of Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido 065-0033, Japan
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
- Corresponding author Yusuke Mizukami, MD PhD Institute of Biomedical ResearchSapporo Higashi Tokushukai Hospital3-1, North-33East-14 Higashi-KuSapporoHokkaido 065-0033Japan+81-11-7883628
| | - Toshikatsu Okumura
- Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
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Takahashi S, Ishida A, Kawasaki H, Kubo A, Amagai M, Okada T. 701 Imaging of the epidermal nerve dynamics and activity in the normal and pruritic dermatitis conditions. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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43
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Sakata A, Okada T, Yamamoto Y, Fushimi Y, Dodo T, Arakawa Y, Mineharu Y, Schmitt B, Miyamoto S, Togashi K. Addition of Amide Proton Transfer Imaging to FDG-PET/CT Improves Diagnostic Accuracy in Glioma Grading: A Preliminary Study Using the Continuous Net Reclassification Analysis. AJNR Am J Neuroradiol 2018; 39:265-272. [PMID: 29301781 DOI: 10.3174/ajnr.a5503] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/20/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Amide proton transfer imaging has been successfully applied to brain tumors, however, the relationships between amide proton transfer and other quantitative imaging values have yet to be investigated. The aim was to examine the additive value of amide proton transfer imaging alongside [18F] FDG-PET and DWI for preoperative grading of gliomas. MATERIALS AND METHODS Forty-nine patients with newly diagnosed gliomas were included in this retrospective study. All patients had undergone MR imaging, including DWI and amide proton transfer imaging on 3T scanners, and [18F] FDG-PET. Logistic regression analyses were conducted to examine the relationship between each imaging parameter and the presence of high-grade (grade III and/or IV) glioma. These parameters included the tumor-to-normal ratio of FDG uptake, minimum ADC, mean amide proton transfer value, and their combinations. In each model, the overall discriminative power for the detection of high-grade glioma was assessed with receiver operating characteristic curve analysis. Additive information from minimum ADC and mean amide proton transfer was also evaluated by continuous net reclassification improvement. P < .05 was considered significant. RESULTS Tumor-to-normal ratio, minimum ADC, and mean amide proton transfer demonstrated comparable diagnostic accuracy in differentiating high-grade from low-grade gliomas. When mean amide proton transfer was combined with the tumor-to-normal ratio, the continuous net reclassification improvement was 0.64 (95% CI, 0.036-1.24; P = .04) for diagnosing high-grade glioma and 0.95 (95% CI, 0.39-1.52; P = .001) for diagnosing glioblastoma. When minimum ADC was combined with the tumor-to-normal ratio, the continuous net reclassification improvement was 0.43 (95% CI, -0.17-1.04; P = .16) for diagnosing high-grade glioma, and 1.36 (95% CI, 0.79-1.92; P < .001) for diagnosing glioblastoma. CONCLUSIONS Addition of amide proton transfer imaging to FDG-PET/CT may improve the ability to differentiate high-grade from low-grade gliomas.
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Affiliation(s)
- A Sakata
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - T Okada
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.) .,Brain Research Center (T.O.)
| | - Y Yamamoto
- Department of Healthcare Epidemiology (Y.Y.), School of Public Health, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Y Fushimi
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - T Dodo
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - Y Arakawa
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - Y Mineharu
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - B Schmitt
- Magnetic Resonance (B.S.), Siemens Healthcare, Bayswater, Australia
| | - S Miyamoto
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - K Togashi
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
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Choi J, Génova-Santos R, Hattori M, Hazumi M, Ishitsuka H, Kanno F, Karatsu K, Kiuchi K, Koyano R, Kutsuma H, Lee K, Mima S, Minowa M, Nagai M, Nagasaki T, Naruse M, Oguri S, Okada T, Otani C, Rebolo R, Rubiño-Martín J, Sekimoto Y, Suzuki J, Taino T, Tajima O, Tomita N, Uchida T, Won E, Yoshida M. Status of the GroundBIRD Telescope. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201816801014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Our understanding of physics at very early Universe, as early as 10−35 s after the Big Bang, relies on the scenario known as the inflationary cosmology. Inflation predicts a particular polarization pattern in the cosmic microwave background, known as the B-mode yet the strength of such polarization pattern is extremely weak. To search for the B-mode of the polarization in the cosmic microwave background, we are constructing an off-axis rotating telescope to mitigate systematic effects as well as to maximize the sky coverage of the observation. We will discuss the present status of the GroundBIRD telescope.
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45
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Takaya S, Sawamoto N, Okada T, Okubo G, Nishida S, Togashi K, Fukuyama H, Takahashi R. Discriminating atypical Parkinsonian syndromes from lewy body diseases using striatal dopamine transporter activity and regional perfusion images. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Takahashi M, Okawa K, Himoto A, Akai H, Hara S, Matsuo N, Sudo Y, Sogo M, Ugawa S, Okada T, Nosaka K, Sakane K, Doi M. P2700Fatal risk of warfarin in asian very elderly patients with atrial fibrillation in direct oral anti-coagulant era. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Kimura H, Fujita Y, Kawabata T, Ishizuka K, Wang C, Iwayama Y, Okahisa Y, Kushima I, Morikawa M, Uno Y, Okada T, Ikeda M, Inada T, Branko A, Mori D, Yoshikawa T, Iwata N, Nakamura H, Yamashita T, Ozaki N. A novel rare variant R292H in RTN4R affects growth cone formation and possibly contributes to schizophrenia susceptibility. Transl Psychiatry 2017; 7:e1214. [PMID: 28892071 PMCID: PMC5611737 DOI: 10.1038/tp.2017.170] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 05/20/2017] [Accepted: 06/17/2017] [Indexed: 02/03/2023] Open
Abstract
Reticulon 4 receptor (RTN4R) plays an essential role in regulating axonal regeneration and plasticity in the central nervous system through the activation of rho kinase, and is located within chromosome 22q11.2, a region that is known to be a hotspot for schizophrenia (SCZ) and autism spectrum disorder (ASD). Recently, rare variants such as copy-number variants and single-nucleotide variants have been a focus of research because of their large effect size associated with increased susceptibility to SCZ and ASD and the possibility of elucidating the pathophysiology of mental disorder through functional analysis of the discovered rare variants. To discover rare variants with large effect size and to evaluate their role in the etiopathophysiology of SCZ and ASD, we sequenced the RTN4R coding exons with a sample comprising 370 SCZ and 192 ASD patients, and association analysis using a large number of unrelated individuals (1716 SCZ, 382 ASD and 4009 controls). Through this mutation screening, we discovered four rare (minor allele frequency <1%) missense mutations (R68H, D259N, R292H and V363M) of RTN4R. Among these discovered rare mutations, R292H was found to be significantly associated with SCZ (P=0.048). Furthermore, in vitro functional assays showed that the R292H mutation affected the formation of growth cones. This study strengthens the evidence for association between rare variants within RTN4R and SCZ, and may shed light on the molecular mechanisms underlying the neurodevelopmental disorder.
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Affiliation(s)
- H Kimura
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Fujita
- Department of Molecular Neuroscience, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T Kawabata
- Laboratory of Protein Informatics Institute for Protein Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Ishizuka
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - C Wang
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Iwayama
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - Y Okahisa
- Department of Neuropsychiatry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - I Kushima
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Morikawa
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Uno
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan,Laboratory for Psychiatric and Molecular Neuroscience, McLean Hospital, Belmont, MA, USA
| | - T Okada
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Ikeda
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - T Inada
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Branko
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan,Department of Psychiatry, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. E-mail:
| | - D Mori
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Yoshikawa
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - N Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - H Nakamura
- Laboratory of Protein Informatics Institute for Protein Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T Yamashita
- Department of Molecular Neuroscience, Osaka University Graduate School of Medicine, Osaka, Japan
| | - N Ozaki
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
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48
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Ishizuka K, Fujita Y, Kawabata T, Kimura H, Iwayama Y, Inada T, Okahisa Y, Egawa J, Usami M, Kushima I, Uno Y, Okada T, Ikeda M, Aleksic B, Mori D, Someya T, Yoshikawa T, Iwata N, Nakamura H, Yamashita T, Ozaki N. Rare genetic variants in CX3CR1 and their contribution to the increased risk of schizophrenia and autism spectrum disorders. Transl Psychiatry 2017; 7:e1184. [PMID: 28763059 PMCID: PMC5611740 DOI: 10.1038/tp.2017.173] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/20/2017] [Accepted: 06/17/2017] [Indexed: 12/20/2022] Open
Abstract
CX3CR1, a G protein-coupled receptor solely expressed by microglia in the brain, has been repeatedly reported to be associated with neurodevelopmental disorders including schizophrenia (SCZ) and autism spectrum disorders (ASD) in transcriptomic and animal studies but not in genetic studies. To address the impacts of variants in CX3CR1 on neurodevelopmental disorders, we conducted coding exon-targeted resequencing of CX3CR1 in 370 Japanese SCZ and 192 ASD patients using next-generation sequencing technology, followed by a genetic association study in a sample comprising 7054 unrelated individuals (2653 SCZ, 574 ASD and 3827 controls). We then performed in silico three-dimensional (3D) structural modeling and in vivo disruption of Akt phosphorylation to determine the impact of the detected variant on CX3CR1-dependent signal transduction. We detected a statistically significant association between the variant Ala55Thr in CX3CR1 with SCZ and ASD phenotypes (odds ratio=8.3, P=0.020). A 3D structural model indicated that Ala55Thr could destabilize the conformation of the CX3CR1 helix 8 and affect its interaction with a heterotrimeric G protein. In vitro functional analysis showed that the CX3CR1-Ala55Thr mutation inhibited cell signaling induced by fractalkine, the ligand for CX3CR1. The combined data suggested that the variant Ala55Thr in CX3CR1 might result in the disruption of CX3CR1 signaling. Our results strengthen the association between microglia-specific genes and neurodevelopmental disorders.
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Affiliation(s)
- K Ishizuka
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
| | - Y Fujita
- Department of Molecular Neuroscience,
Osaka University Graduate School of Medicine, Osaka,
Japan
| | - T Kawabata
- Institute for Protein Research, Osaka
University, Osaka, Japan
| | - H Kimura
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
| | - Y Iwayama
- Laboratory for Molecular Psychiatry,
RIKEN Brain Science Institute, Wako, Japan
| | - T Inada
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
| | - Y Okahisa
- Department of Neuropsychiatry, Okayama
University Graduate School of Medicine, Dentistry and Pharmaceutical
Sciences, Okayama, Japan
| | - J Egawa
- Department of Psychiatry, Niigata
University Graduate School of Medical and Dental Sciences,
Niigata, Japan
| | - M Usami
- Department of Child and Adolescent
Psychiatry, Kohnodai Hospital, National Center for Global Health and
Medicine, Ichikawa, Japan
| | - I Kushima
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
| | - Y Uno
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan,Laboratory for Psychiatric and Molecular
Neuroscience, McLean Hospital, Belmont, MA,
USA
| | - T Okada
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
| | - M Ikeda
- Department of Psychiatry, Fujita Health
University School of Medicine, Toyoake, Japan
| | - B Aleksic
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan,Department of Psychiatry, Nagoya University Graduate School
of Medicine, 65 Tsurumai-cho, Showa-ku,
Nagoya, Aichi
4668550, Japan. E-mail:
| | - D Mori
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan,Brain and Mind Research Center, Nagoya
University, Nagoya, Japan
| | - To Someya
- Department of Psychiatry, Niigata
University Graduate School of Medical and Dental Sciences,
Niigata, Japan
| | - T Yoshikawa
- Laboratory for Molecular Psychiatry,
RIKEN Brain Science Institute, Wako, Japan
| | - N Iwata
- Department of Psychiatry, Fujita Health
University School of Medicine, Toyoake, Japan
| | - H Nakamura
- Institute for Protein Research, Osaka
University, Osaka, Japan
| | - T Yamashita
- Department of Molecular Neuroscience,
Osaka University Graduate School of Medicine, Osaka,
Japan
| | - N Ozaki
- Department of Psychiatry, Nagoya
University Graduate School of Medicine, Nagoya,
Japan
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49
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Ito S, Ito S, Kodani N, Endo A, Okada T, Watanabe N, Ouchi T, Yoshitomi H, Tanabe K. 4777Clinical utility of 99mTc-PYP and 201Tl-Cl SPECT imaging using quantitative evaluation in patients with suspected cardiac amyloidosis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.4777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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50
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Endo A, Okada T, Kagawa Y, Pak M, Ito S, Ouchi T, Watanabe N, Yamaguchi K, Yoshitomi H, Tanabe K. 5968Comparison of the low-density lipoprotein cholesterol target value and the preventive effect of statins in elderly patients and younger patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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