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Matsumoto T, Kanaya M, Matsushima D, Han C, Tokuda IT. Synchronized and Desynchronized Dynamics Observed from Physical Models of the Vocal and Ventricular Folds. J Voice 2024; 38:572-584. [PMID: 34903395 DOI: 10.1016/j.jvoice.2021.10.023] [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: 08/19/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022]
Abstract
The ventricular folds, located superiorly to the vocal folds, do not usually vibrate during normal phonations. It has been shown, however, that they do vibrate together with the vocal folds under special circumstances such as voice pathology and singing voice. Towards understanding the effect of the ventricular fold oscillations on the vocal fold oscillations, the present study developed a synthetic model that takes into account anatomical features of the human ventricular folds. The synthetic model is made of flexible silicone compounds with material properties comparable to those of human ventricular fold tissues. In our experiment, an air-flow was injected into the vocal and ventricular fold models. As the distance between the left and right ventricular folds was reduced, the ventricular folds started to co-vibrate with the vocal folds. Depending upon the distance, various oscillation patterns of the vocal-ventricular folds were observed, e.g., synchronized dynamics with 1:1 or 1:2 frequency ratio and desynchronized chaotic dynamics. The observed chaotic dynamics might be related to voice pathology induced by the ventricular phonation. A computational model was further presented to elucidate the experimental findings.
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Affiliation(s)
- Takuma Matsumoto
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga, Japan
| | - Mayuka Kanaya
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga, Japan
| | - Daisuke Matsushima
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga, Japan
| | - Cong Han
- Department of Mechanical Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga, Japan
| | - Isao T Tokuda
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga, Japan.
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2
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Hayato R, Matsumoto T, Higure Y. Ca2+ Depletion in the ER Causes Store-Operated Ca2+ Entry via the TRPC6 Channel in Mouse Brown Adipocytes. Physiol Res 2024; 73:69-80. [PMID: 38466006 PMCID: PMC11019620 DOI: 10.33549/physiolres.935071] [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: 01/30/2023] [Accepted: 10/31/2023] [Indexed: 04/26/2024] Open
Abstract
beta3-adrenergic activation causes Ca2+ release from the mitochondria and subsequent Ca2+ release from the endoplasmic reticulum (ER), evoking store-operated Ca2+ entry (SOCE) due to Ca2+ depletion from the ER in mouse brown adipocytes. In this study, we investigated how Ca2+ depletion from the ER elicits SOCE in mouse brown adipocytes using fluorometry of intracellular Ca2+ concentration ([Ca2+]i). The administration of cyclopiazonic acid (CPA), a reversible sarcoplasmic/endoplasmic reticulum calcium ATPase (SERCA) pump blocker in the ER, caused an increase in [Ca2+]i. Moreover, CPA induced SOCE was suppressed by the administration of a Ca2+ free Krebs solution and the transient receptor potential canonical 6 (TRPC6) selective blockers 2-APB, ML-9 and GsMTx-4 but not Pico145, which blocks TRPC1/4/5. Administration of TRPC6 channel agonist 1-oleoyl-2-acetyl-sn-glycerol (OAG) and flufenamic acid elicited Ca2+ entry. Moreover, our RT-PCR analyses detected mRNAs for TRPC6 in brown adipose tissues. In addition, western blot analyses showed the expression of the TRPC6 protein. Thus, TRPC6 is one of the Ca2+ pathways involved in SOCE. These modes of Ca2+ entry provide the basis for heat production via activation of Ca2+-dependent dehydrogenase and the expression of uncoupling protein 1 (UCP1). Enhancing thermogenic metabolism in brown adipocytes may serve as broad therapeutic utility to reduce obesity and metabolic syndrome.
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Affiliation(s)
- R Hayato
- Laboratory of Anatomy and Physiology, School of Nutritional Sciences, Nagoya University of Arts and Sciences, Takenoyama, Nissin-City, Aichi, Japan.
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3
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Tsuji D, Nakagaki S, Yonezawa I, Suzuki K, Yokokawa T, Kawasaki Y, Yamaguchi T, Kawaguchi T, Hatori M, Matsumoto T, Sakata Y, Yamamoto K, Nishimura T, Kogure Y, Hayashi T, Osawa M, Itoh K, Watanabe M. A multicenter phase II trial of the triplet antiemetic therapy with palonosetron, aprepitant, and olanzapine for a cisplatin-containing regimen. - PATROL-I. Invest New Drugs 2024; 42:44-52. [PMID: 38055127 DOI: 10.1007/s10637-023-01414-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023]
Abstract
Dexamethasone is one of the key antiemetic agents and is widely used even now. However, dexamethasone has been associated with several adverse reactions even after short-term administration. Therefore, developing a steroid-free antiemetic regimen is an important issue to consider. Thus, the purpose of this study was to investigate the efficacy and safety of palonosetron, aprepitant, and olanzapine in a multi-institutional phase II study. Chemotherapy-naive patients scheduled to receive cisplatin were enrolled and evaluated for the occurrence of chemotherapy-induced nausea and vomiting during 120 h after chemotherapy. The primary endpoint of the study was total control (TC) in the overall phase. The key secondary endpoint was complete response (CR), which was assessed in the acute, delayed, and overall phase, respectively. Adverse events were evaluated according to the Common Terminology Criteria for Adverse Events. Eighty-five patients were enrolled from 8 centers in Japan, of which 83 were evaluable for analyses. The percentage of patients who achieved TC during the overall phase was 31.3%. CR was achieved in 61.4%, 84.3%, and 65.1% of patients during the overall, acute, and delayed phases, respectively. The most frequently reported adverse event was anorexia. The primary endpoint was below the threshold and we could not find benefit in the dexamethasone-free regimen, but CR during the overall phase was similar to that of the conventional three-drug regimen. This antiemetic regimen without dexamethasone might be an option for patients for whom corticosteroids should not be an active application.
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Affiliation(s)
- Daiki Tsuji
- Department of Clinical Pharmacology & Genetics, School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan.
| | - Shigeru Nakagaki
- Department of Pharmacy, Shizuoka General Hospital, Shizuoka, Japan
| | - Itsuki Yonezawa
- Department of Clinical Pharmacology & Genetics, School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
| | - Kenichi Suzuki
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Takashi Yokokawa
- Department of Pharmacy, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yohei Kawasaki
- Faculty of Nursing, Japanese Red Cross College of Nursing, Tokyo, Japan
| | - Takumi Yamaguchi
- Institute for Assistance of Academic and Education, IAAE, Kanagawa, Japan
| | - Takashi Kawaguchi
- Department of Practical Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Masahiro Hatori
- Department of Pharmacy, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Takuma Matsumoto
- Pharmaceutical Department, National Hospital Organization Iwakuni Clinical Center, Yamaguchi, Japan
| | - Yukio Sakata
- Department of Pharmacy, Hakodate Municipal Hospital, Hokkaido, Japan
| | - Keisuke Yamamoto
- Department of Pharmacy, Seirei Hamamatsu General Hospital, Shizuoka, Japan
| | - Tomoyasu Nishimura
- Department of Pharmacy, Wakayama Medical University Hospital, Wakayama, Japan
| | - Yuki Kogure
- Department of Pharmacy, National Hospital Organization Higashihiroshima Medical Center, Hiroshima, Japan
| | - Toshinobu Hayashi
- Department of Pharmaceutical and Health Care Management, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Misa Osawa
- Department of Pharmacy, Shizuoka General Hospital, Shizuoka, Japan
| | - Kunihiko Itoh
- Department of Clinical Pharmacology & Genetics, School of Pharmaceutical Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
| | - Masaya Watanabe
- Department of Gastroenterological Surgery, Shizuoka General Hospital, Shizuoka, Japan
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4
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Inoue T, Shiozawa K, Matsumoto T, Kanaya M, Tokuda IT. Nonlinear dynamics and chaos in a vocal-ventricular fold system. Chaos 2024; 34:023134. [PMID: 38386906 DOI: 10.1063/5.0155215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 01/27/2024] [Indexed: 02/24/2024]
Abstract
In humans, ventricular folds are located superiorly to the vocal folds. Under special circumstances such as voice pathology or singing, they vibrate together with the vocal folds to contribute to the production of voice. In the present study, experimental data measured from physical models of the vocal and ventricular folds were analyzed in the light of nonlinear dynamics. The physical models provide a useful experimental framework to study the biomechanics of human vocalizations. Of particular interest in this experiment are co-oscillations of the vocal and ventricular folds, occasionally accompanied by irregular dynamics. We show that such a system can be regarded as two coupled oscillators, which give rise to various cooperative behaviors such as synchronized oscillations with a 1:1 or 1:2 frequency ratio and desynchronized oscillations with torus or chaos. The insight gained from the view of nonlinear dynamics should be of significant use for the diagnosis of voice pathologies, such as ventricular fold dysphonia.
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Affiliation(s)
- Takumi Inoue
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Kota Shiozawa
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Takuma Matsumoto
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Mayuka Kanaya
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Isao T Tokuda
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
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5
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Takahashi S, Matsumoto T, Hollamby MJ, Miyasaka H, Vacha M, Sotome H, Yagai S. Impact of Ring-Closing on the Photophysical Properties of One-Dimensional π-Conjugated Molecular Aggregate. J Am Chem Soc 2024; 146:2089-2101. [PMID: 38163763 DOI: 10.1021/jacs.3c11407] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The self-assembled state of molecules plays a pivotal role in determining how inherent molecular properties transform and give rise to supramolecular functionalities and has long attracted attention. However, understanding the influence of morphologies spanning the nano- to mesoscopic scales of supramolecular assemblies derived from identical intermolecular interactions has been notoriously challenging due to dynamic structural change and monomer exchange of assemblies in solution. In this study, we demonstrate that curved one-dimensional molecular assemblies (supramolecular polymers) of lengths of around 70-200 nm, originating from the same luminescent molecule, exhibit distinct photoluminescent properties when they form closed circular structures (toroids) versus when they possess chain termini in solution (random coils). By exploiting the difference in kinetic stability between the toroids and random coils, we developed a dialysis protocol to selectively purify the former. It was revealed that these terminus-free closed structures manifest higher energy and more efficient luminescence compared with their mixed state with random coils. Time-resolved fluorescence measurements unveiled that random coils, due to their dynamic structural fluctuation in solution, generate local defects throughout the main chain, leading to luminescence from lower energy levels. In mixtures of the two assemblies, luminescence was exclusively observed from such a lower energy level of random coils, a result attributed to energy transfer between the assemblies. This work emphasizes that for identical supramolecular assemblies, only averaged properties have traditionally been considered, but their structures at the nano- to mesoscopic scale are important especially if they have a certain degree of shape persistency even in solution.
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Affiliation(s)
- Sho Takahashi
- Division of Advanced Science and Engineering, Graduate School of Science and Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takuma Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12 Meguro-ku, Tokyo 152-8552, Japan
| | - Martin J Hollamby
- Department of Chemistry, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST55BG, U.K
| | - Hiroshi Miyasaka
- Division of Frontier Materials Science and Centre for Advanced Interdisciplinary Research, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Martin Vacha
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12 Meguro-ku, Tokyo 152-8552, Japan
| | - Hikaru Sotome
- Division of Frontier Materials Science and Centre for Advanced Interdisciplinary Research, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Shiki Yagai
- Institute for Advanced Academic Research (IAAR), Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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6
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Anjiki K, Hayashi S, Fujishiro T, Hiranaka T, Kuroda R, Matsumoto T. Rectangular tapered short stem excellently preserves proximal bone mineral density preservation than tapered wedge short stem. Acta Orthop Belg 2023; 89:491-497. [PMID: 37935234 DOI: 10.52628/89.3.11833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Fitmore stem is a rectangular, tapered, short, cementless stem. A characteristic feature of this stem is that it provides rotational stability due to the high medullary occupancy achieved by its rectangular cross-section and thick antero- posterior width. We aimed to investigate the differences in periprosthetic bone remodelling between a rectangular- tapered short stem and a short tapered-wedge stem. Eighty patients who underwent primary total hip arthroplasty using a rectangular-tapered short stem (Fitmore) or a short tapered-wedge stem (Tri-Lock BPS) were enrolled in this study. Bone mineral densities (BMDs) in the seven Gruen zones were evaluated using dual-energy X-ray absorptiometry at baseline, and at 6 and 24 months postoperatively. Peri-prosthetic BMD and clinical factors were assessed and compared. In addition, correlations between periprosthetic BMD changes and stem anteversion error were analyzed using Pearson's correlation coefficient in the two groups. A significantly better postoperative periprosthetic BMD change was found in zones 1 and 7 in the rectangular-tapered group. Additionally, no significant correlation was observed between stem anteversion error and periprosthetic BMD changes in the rectangular-tapered groups. However, in the tapered-wedge group, there were significant negative correlations between the stem anteversion error and BMD changes at 6 months and 24 months in zones 1 and 7. In the rectangular-tapered group, a significantly better postoperative periprosthetic BMD change was found particularly in the region proximal to the stem. Rectangular-tapered short stem can be more resistant to rotation due to higher medullary occupancy and may lead to better periprosthetic BMD than the tapered-wedge short stem, especially in the proximal region of the stem.
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7
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Clarke OE, Pelling H, Bennett V, Matsumoto T, Gregory GE, Nzakizwanayo J, Slate AJ, Preston A, Laabei M, Bock LJ, Wand ME, Ikebukuro K, Gebhard S, Sutton JM, Jones BV. Lipopolysaccharide structure modulates cationic biocide susceptibility and crystalline biofilm formation in Proteus mirabilis. Front Microbiol 2023; 14:1150625. [PMID: 37089543 PMCID: PMC10113676 DOI: 10.3389/fmicb.2023.1150625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/06/2023] [Indexed: 04/08/2023] Open
Abstract
Chlorhexidine (CHD) is a cationic biocide used ubiquitously in healthcare settings. Proteus mirabilis, an important pathogen of the catheterized urinary tract, and isolates of this species are often described as “resistant” to CHD-containing products used for catheter infection control. To identify the mechanisms underlying reduced CHD susceptibility in P. mirabilis, we subjected the CHD tolerant clinical isolate RS47 to random transposon mutagenesis and screened for mutants with reduced CHD minimum inhibitory concentrations (MICs). One mutant recovered from these screens (designated RS47-2) exhibited ~ 8-fold reduction in CHD MIC. Complete genome sequencing of RS47-2 showed a single mini-Tn5 insert in the waaC gene involved in lipopolysaccharide (LPS) inner core biosynthesis. Phenotypic screening of RS47-2 revealed a significant increase in cell surface hydrophobicity and serum susceptibility compared to the wildtype, and confirmed defects in LPS production congruent with waaC inactivation. Disruption of waaC was also associated with increased susceptibility to a range of other cationic biocides but did not affect susceptibility to antibiotics tested. Complementation studies showed that repression of smvA efflux activity in RS47-2 further increased susceptibility to CHD and other cationic biocides, reducing CHD MICs to values comparable with the most CHD susceptible isolates characterized. The formation of crystalline biofilms and blockage of urethral catheters was also significantly attenuated in RS47-2. Taken together, these data show that aspects of LPS structure and upregulation of the smvA efflux system function in synergy to modulate susceptibility to CHD and other cationic biocides, and that LPS structure is also an important factor in P. mirabilis crystalline biofilm formation.
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Affiliation(s)
- O. E. Clarke
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - H. Pelling
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - V. Bennett
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - T. Matsumoto
- Department of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - G. E. Gregory
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - J. Nzakizwanayo
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - A. J. Slate
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - A. Preston
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - M. Laabei
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - L. J. Bock
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - M. E. Wand
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - K. Ikebukuro
- Department of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - S. Gebhard
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - J. M. Sutton
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - B. V. Jones
- Department of Life Sciences, University of Bath, Bath, United Kingdom
- *Correspondence: B. V. Jones,
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8
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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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Mutaguchi J, Morooka K, Kinoshita F, Matsumoto T, Monji K, Kashiwagi E, Shiota M, Inokuchi J, Eto M. The efficacy of red channel enhanced images for AI segmentation of bladder tumors in Cystoscopic. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00641-3] [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: 02/12/2023]
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Matsumoto T, Tsukahara S, Nagakawa S, Monji K, Kashiwagi E, Shiota M, Inokuchi J, Keisuke K, Eto M. ctDNA guiding with hotspot mutation in PLEKHS1 further improves early prediction of recurrence in muscle-invasive bladder cancer. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00215-4] [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: 02/12/2023]
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Matsumoto T, Nakajima Y, Kubo S, Fukunaga M, Saito S, Hara H. Multicenter registry of the Watchman left atrial appendage closure device for patients with atrial fibrillation in Japan: The TERMINATOR registry. Eur Heart J 2023. [DOI: 10.1093/eurheartj/ehac779.088] [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: 01/26/2023] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): Boston Scientific Japan
Background
Transcatheter left atrial appendage closure (LAAC) provides an alternative to oral anticoagulation for thromboembolic risk reduction in patients with nonvalvular atrial fibrillation (AF). A meta-analysis of previous two randomized trials reported improved rates of hemorrhagic stroke, cardiovascular/unexplained death, and nonprocedural bleeding compared to warfarin (1). Recently, the next-generation LAAC device, the Watchman FLX system, became available, and showed a low incidence of adverse events and a high incidence of anatomic closure (2). This transcatheter stroke prevention has already been approved in Asian countries. However, there is little data of LAAC in Asian population.
Purpose
This study sought to assess efficacy and safety of LAAC for patients with nonvalvular AF in Asia.
Methods
The TERMINATOR (Transcatheter Modification of Left Atrial Appendage by Obliteration with Device) registry is a multicenter nonrandomized study in Japan. This enrolled patients who underwent LAAC in 23 Japanese institutions. The LAAC was indicated for patients with nonvalvular atrial fibrillation in whom oral anticoagulation is required, but who have a risk of bleeding (history of BARC type 3 bleeding or HAS-BLED score ≥3 points). Baseline patient and procedural characteristics and clinical outcomes were evaluated.
Results
A total of 729 patients were enrolled between September 2019 and November 2021. The mean age was 74.9±8.8 years and the mean CHA2DS2-VASc score was 4.7±1.5. The Watchman generation 2.5 and FLX system were used in 469 (64.3%) and 260 patients (35.7%), respectively. Procedural success was achieved in 722 patients (99.0%). In-hospital adverse events were as follows; 6 tamponades (0.8%), 3 pericardial effusion (0.4%), 2 device embolization (0.3%), no stroke (0%), and no death (0%). During follow-up, device-related thrombus and all-cause death were reported in 16 (2.2%) and 23 patients (3.2%), respectively.
Conclusions
LAAC with the Watchman system provides compatible efficacy and safety outcomes in Asian population.
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Affiliation(s)
- T Matsumoto
- Shonan Kamakura General Hospital, Department of Cardiology and Catheterization Laboratories , Kamakura , Japan
| | - Y Nakajima
- Iwate University Hospital, Division of Cardiology, Department of Internal Medicine , Iwate , Japan
| | - S Kubo
- Kurashiki Central Hospital, Department of Cardiology , Kurashiki , Japan
| | - M Fukunaga
- Kokura Memorial Hospital, Department of Cardiology , Kokura , Japan
| | - S Saito
- Shonan Kamakura General Hospital, Department of Cardiology and Catheterization Laboratories , Kamakura , Japan
| | - H Hara
- Toho University Ohashi Medical Center, Division of Cardiovascular Medicine , Tokyo , Japan
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12
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Kanaya M, Matsumoto T, Uemura T, Kawabata R, Nishimura T, Tokuda IT. Physical modeling of the vocal membranes and their influence on animal voice production. JASA Express Lett 2022; 2:111201. [PMID: 36456367 DOI: 10.1121/10.0015071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The vocal membrane, i.e., an extended part of the vocal fold, is observed in a wide range of species including bats and primates. A theoretical study [Mergell, Fitch, and Herzel (1999). J. Acoust. Soc. Am. 105(3), 2020-2028] predicted that the vocal membranes can make the animal vocalizations more efficient by lowering the phonation threshold pressure. To examine this prediction, a synthetic model of the vocal membrane was developed, and its oscillation properties were examined. The experiments revealed that the phonation threshold pressure was lower in the vocal membrane model compared to that in a model with no vocal membrane. Chaotic oscillations were observed as well.
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Affiliation(s)
- Mayuka Kanaya
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Takuma Matsumoto
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Taisuke Uemura
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Rei Kawabata
- College of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Takeshi Nishimura
- Center for the Evolutionary Origins of Human Behavior, Kyoto University, Inuyama, Aichi 484-8506, Japan , , , , ,
| | - Isao T Tokuda
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
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Toya R, Saito T, Fukugawa Y, Matsuyama T, Matsumoto T, Shiraishi S, Murakami D, Orita Y, Hirai T, Oya N. Prevalence and Risk Factors of Retro-Styloid Lymph Node Metastasis in Oropharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1393] [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: 10/31/2022]
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Boku S, Satake H, Ohta T, Mitani S, Kawakami K, Matsumoto T, Yamazaki E, Hasegawa H, Ikoma T, Uemura M, Yamaguchi T, Ishizuka Y, Kurokawa Y, Sakai D, Kawakami H, Shimokawa T, Tsujinaka T, Kato T, Satoh T, Kagawa Y. 440TiP TRESBIEN (OGSG 2101): Encorafenib, binimetinib and cetuximab for early relapse stage II/III BRAF V600E-mutated CRC. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.578] [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: 11/16/2022] Open
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Matsumoto T, Hasegawa S, Hasegawa T, Kinoshita T. MAXS reveals the conformational changes of intrinsically disordered regions of MAP2K6. Acta Cryst Sect A 2022. [DOI: 10.1107/s205327332209307x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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16
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Kaneta A, Sasada H, Matsumoto T, Sakai T, Sato S, Hara T. Efficacy of endoscopic gallbladder drainage in patients with acute cholecystitis. BMC Surg 2022; 22:224. [PMID: 35690750 PMCID: PMC9188174 DOI: 10.1186/s12893-022-01676-y] [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: 12/28/2021] [Accepted: 05/31/2022] [Indexed: 12/07/2022] Open
Abstract
Background Early cholecystectomy is recommended for patients with acute cholecystitis. However, emergency surgery may not be indicated due to complications and disease severity. Patients requiring drainage are usually treated with percutaneous transhepatic gallbladder drainage (PTGBD), whereas patients with biliary duct stones undergo endoscopic stones removal followed by endoscopic gallbladder drainage (EGBD). Herein, we investigated the efficacy of EGBD in patients with acute cholecystitis. Methods Overall, 101 patients receiving laparoscopic cholecystectomy between September 2019 and September 2020 in our department were retrospectively analyzed. Results The patients (n = 101) were divided into three groups: control group that did not undergo drainage (n = 68), a group that underwent EGBD (n = 7), and a group that underwent PTGBD (n = 26). Median surgery time was 107, 166, and 143 min, respectively. Control group had a significantly shorter surgery time, whereas it did not significantly differ between EGBD and PTGBD groups. The median amount of bleeding was 5 g, 7 g, and 7.5 g, respectively, and control group had significantly less bleeding than the drainage group. We further divided patients into the following subgroups: patients requiring a 5 mm clip to ligate the cystic duct, patients requiring a 10 mm clip due to the thickness of the cystic duct, patients requiring an automatic suturing device, and patients undergoing subtotal cholecystectomy due to impossible cystic duct ligation. There was no significant difference between EGBD and PTGBD regarding the clip used or the need for an automatic suturing device and subtotal cholecystectomy. Conclusions There was no significant difference between EGBD and PTGBD groups regarding surgery time or bleeding amount when surgery was performed after gallbladder drainage for acute cholecystitis. Therefore, EGBD was considered a useful preoperative drainage method requiring no drainage bag.
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Affiliation(s)
- Anri Kaneta
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan.
| | - Hirotaka Sasada
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan
| | - Takuma Matsumoto
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan
| | - Tsuyoshi Sakai
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan
| | - Shuichi Sato
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan
| | - Takashi Hara
- Department of Surgery, Kensei Hospital, 2 Ogimachi, Hirosaki, Aomori, 036-8511, Japan
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Sugihara T, Ishizaki T, Baba H, Matsumoto T, Kubo K, Kamiya M, Hirano F, Hosoya T, Kojima M, Miyasaka N, Harigai M. POS0522 ASSOCIATED FACTORS WITH PHYSICAL DYSFUNCTION OF ELDERLY-ONSET RHEUMATOID ARTHRITIS TREATED WITH A TREAT-TO-TARGET STRATEGY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1302] [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: 11/04/2022]
Abstract
BackgroundAchievement of normal physical function is an important outcome for older patients. Previous studies of younger cohorts showed that aging, comorbidities, and joint damage influenced the physical function of patients with RA who achieved clinical remission or low disease activity (LDA). We previously demonstrated that a treat-to-target (T2T) strategy for methotrexate (MTX)-naïve elderly-onset RA (EORA) was effective with an acceptable safety profile. It showed that 60.9% of 197 patients achieved HAQ Disability Index (HAQ-DI) ≤0.5 at three years by following the T2T strategy targeting LDA (1).ObjectivesWe aimed to evaluate associated factors with HAQ-DI in the T2T strategy targeting LDA for patients with EORA during three-year observational period.MethodsTreatment was adjusted to target LDA with conventional synthetic disease-modifying antirheumatic drugs (DMARDs), followed by biological DMARDs (bDMARDs) in 197 MTX-naïve EORA patients (mean age 74.9 years) with moderate-to-high disease activity. HAQ-DI was evaluated at week 0, 24, 52, 76, 104, 128, and 156. To evaluate associated factors with SDAI and HAQ-DI over the 36-month follow-up, Bayesian hierarchical logistic regression modeling was applied for 1067 periods from the 197 patients.ResultsAt baseline, the enrolled 197 patients with EORA who had normal physical function (HAQ-DI ≤0.5) in 29.4%, HAQ-DI >0.5 and <1.5 in 36.5%, and HAQ-DI ≥1.5 in 33.0%, and the mean age (standard deviation [SD]) in each group was 72.7 (5.9), 74.8 (7.3), and 75.6 (6.7), respectively. Baseline SDAI increased in the group with higher HAQ-DI. The proportions of patients with each comorbidity and estimated creatinine clearance at baseline were not significantly different across the 3 groups.In the multilevel logistic model, the association of MTX, bDMARDs, and GC use with changes in SDAI in each period was evaluated. Age, sex, and comorbidities (chronic lung disease, cardiovascular disease, history of malignancy, osteoporosis, history of serious infections, and osteoarthritis) were included as inter-individual factors. The model indicated that the use of bDMARDs was associated with a reduction of the SDAI (ΔSDAI: -9.75, SD 0.75, p<0.001), while neither MTX (ΔSDAI: -1.25, SD 1.13, p=0.270) nor GCs (ΔSDAI: -0.78, SD 0.88, p=0.372) was associated with changes in SDAI. Chronic lung diseases (ΔSDAI: 4.64, SD 1.44, p=0.001) and osteoporosis (ΔSDAI: 3.78, SD 1.46, p=0.001) at baseline were associated with the increment of SDAI.The association of age, sex, the comorbidities, and MTX, bDMARDs, and GC use with physical function in each period was evaluated by the multilevel logistic model. The model indicated that older age (ΔHAQ-DI: 0.03, SD 0.01, p <0.001), chronic lung diseases (ΔHAQ-DI: 0.15, SD 0.10, p=0.001), and osteoporosis (ΔHAQ-DI: 0.30, SD 0.10, p=0.010) at baseline were associated with the increment of HAQ-DI. When the mean SDAI during the observation period was added to the model as an inter-individual factor, the associations of HAQ-DI with the chronic lung diseases and osteoporosis at baseline were not statistically significant.ConclusionThese data indicate that bDMARDs had a central role in reducing disease activity in the T2T strategy targeting LDA in EORA patients. Chronic lung diseases and osteoporosis at baseline were associated with increase in disease activity and worsening of physical function. However, disease activity had a greater impact on physical function than the comorbidities at baseline.References[1]Sugihara T, et al. Rheumatology (Oxford). 2021;60(9):4252-4261Disclosure of Intereststakahiko sugihara Speakers bureau: TS has received honoraria from Abbvie Japan Co., Ltd., AsahiKASEI Co., Ltd., Astellas Pharma Inc., Ayumi Pharmaceutical, Bristol Myers Squibb K.K., Chugai Pharmaceutical Co., Ltd., Eli Lilly Japan K.K., Mitsubishi-Tanabe Pharma Co., Ono Pharmaceutical, Pfizer Japan Inc., Takeda Pharmaceutical Co. Ltd., and UCB Japan Co. Ltd., Grant/research support from: TS has received research grants from AsahiKASEI Co., Ltd., Daiichi Sankyo., Chugai Pharmaceutical Co., Ltd., and Ono Pharmaceutical., Tatsuro Ishizaki: None declared, Hiroyuki Baba: None declared, Takumi Matsumoto: None declared, Kanae Kubo Speakers bureau: KK has received honoraria from Asahi KASEI, Astellas Pharma, Bristol Myers Squibb, Eisai, AbbVie GK, Boehringer Ingelheim, Daiichi-Sankyo, Chugai Pharmaceutical, Mitsubishi Tanabe Pharma and Nippon Shinyaku., Grant/research support from: KK has received research grants from Asahi KASEI, Mari Kamiya: None declared, Fumio Hirano: None declared, Tadashi Hosoya: None declared, Masayo Kojima Speakers bureau: MK has received speakers bureau from AbbVie, Astellas, Ayumi Pharma, Chugai, Eisai, Eli Lilly, Janssen, Ono Pharmaceutical, Pfizer, Tanabe-Mitsubishi, and Takeda Pharmaceutical Co., Ltd., Nobuyuki Miyasaka: None declared, Masayoshi Harigai Speakers bureau: MH has received speaker’s fee from AbbVie Japan GK, Ayumi Pharmaceutical Co., Boehringer Ingelheim Japan, Inc.,Bristol Myers Squibb Co., Ltd., Chugai Pharmaceutical Co., Ltd., Eisai Co., Ltd., Eli Lilly Japan K.K., GlaxoSmithKline K.K., Kissei Pharmaceutical Co., Ltd., Pfizer Japan Inc., Takeda Pharmaceutical Co., Ltd., and Teijin Pharma Ltd., Consultant of: MH is a consultant for AbbVie, Boehringer-ingelheim, Bristol Myers Squibb Co., Kissei Pharmaceutical Co.,Ltd. and Teijin Pharma., Grant/research support from: MH has received research grants from AbbVie Japan GK, Asahi Kasei Corp., Astellas Pharma Inc., Ayumi Pharmaceutical Co., Bristol Myers Squibb Co., Ltd., Chugai Pharmaceutical Co., Daiichi-Sankyo, Inc.,Eisai Co., Ltd., Kissei Pharmaceutical Co., Ltd., Mitsubishi Tanabe Pharma Co., Nippon Kayaku Co., Ltd., Sekiui Medical, Shionogi & Co., Ltd., Taisho Pharmaceutical Co., Ltd., Takeda Pharmaceutical Co., Ltd., and Teijin Pharma Ltd.
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Ohtsuka H, Matsumoto T, Mochida T, Shimasaki T, Shibuya M, Yamamoto Y, Aiba H. Tschimganine has different targets for chronological lifespan extension and growth inhibition in fission yeast. Biosci Biotechnol Biochem 2022; 86:775-779. [PMID: 35416247 DOI: 10.1093/bbb/zbac051] [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: 01/19/2022] [Accepted: 03/25/2022] [Indexed: 11/14/2022]
Abstract
Tschimganine inhibits growth and extends the chronological lifespan in Schizosaccharomyces pombe. We synthesized a Tschimganine analog, Mochimganine, which extends the lifespan similar to Tschimganine but exhibits a significantly weaker growth inhibition effect. Based on the comparative analysis of these compounds, we propose that Tschimganine has at least 2 targets: one extends the lifespan and the other inhibits growth.
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Affiliation(s)
- Hokuto Ohtsuka
- Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Takuma Matsumoto
- Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Takahiro Mochida
- Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Takafumi Shimasaki
- Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Masatoshi Shibuya
- Laboratory of Molecular Design, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
| | - Yoshihiko Yamamoto
- Laboratory of Molecular Design, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
| | - Hirofumi Aiba
- Laboratory of Molecular Microbiology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Aichi, Japan
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Hirai M, Toya Y, Kikuchi A, Yanai S, Tabayashi A, Matsumoto T. Rare cause of lower gastrointestinal bleeding: Iliac aneurysmo-colonic fistula after endovascular treatment. J Gastroenterol Hepatol 2022; 37:417. [PMID: 34414602 DOI: 10.1111/jgh.15651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/07/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 12/09/2022]
Affiliation(s)
- M Hirai
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - Y Toya
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - A Kikuchi
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - S Yanai
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - A Tabayashi
- Department of Cardiovascular Surgery, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - T Matsumoto
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
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Kubota S, Morohashi H, Sakamoto Y, Miura T, Ichinohe D, Watanabe N, Kanda T, Hagiwara Y, Fujita H, Nakamura A, Matsumoto T, Yamazaki K, Yamada T, Yamamoto T, Hakamada K. [A Case of Two Stage taTME for Perforated Rectal Cancer during Chemotherapy]. Gan To Kagaku Ryoho 2021; 48:1706-1708. [PMID: 35046304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The patient was a 57-year-old male. He was diagnosed with locally advanced rectal cancer infiltrating the left levator ani muscle. Chemotherapy(S-1 plus L-OHP plus bevacizumab regimen)was started for the purpose of obtaining a negative circumferential radial margin. After the second course, he presented with perforation of the sigmoid colon for which an emergency operation was performed. The perforation was located 5 centimeters above the tumor in the sigmoid colon. We performed partial resection of the sigmoid colon to repair the perforation and create a sigmoid colostomy. CT, after the initial S-1 plus L-OHP plus bevacizumab chemotherapy regimen, revealed tumor shrinkage. Following 2 more courses of chemotherapy( S-1 plus L-OHP regimen), we performed transanal total mesenteric excision(taTME)as curative surgery. R0 resection was achieved. The combined transanal and laparoscopic approach was highly effective for a patient with pan-peritonitis.
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Affiliation(s)
- Shunsuke Kubota
- Dept. of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine
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Yamazaki K, Sakamoto Y, Morohashi H, Miura T, Ichinohe D, Ichisawa A, Ogasawara K, Kuwata D, Takahashi Y, Nakamura A, Yamada T, Yamamoto T, Matsumoto T, Hakamada K. [Treatment for Laterally Invasive Rectal Cancer with Robot-Assisted Surgery after Preoperative Treatment]. Gan To Kagaku Ryoho 2021; 48:1640-1642. [PMID: 35046282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The patient is a 40-year-old male. He was referred to our department because, after a thorough examination, he was diagnosed with rectal cancer. Preoperative imaging showed a tumor in the rectum at the level of the seminal vesicles, and left lateral invasion was suspected. In addition, lymph node metastases in the left lateral area were suspected. We performed a robot-assisted low anterior resection plus bilateral lateral dissection plus covering ileostomy for this patient after neoadjuvant chemotherapy. The operation time was 495 minutes, and the blood loss was 50 g. The histopathological diagnosis was pT3, N3(#263), M0, pStage Ⅲc, PM0, DM0, RM0, R0, Cur A. In Japan, robotic-assisted surgery for rectal cancer has been covered by insurance since April 2018, and in our department, robotic surgery is the first option for any stage or type of surgery for rectal cancer. We believe that the greatest advantages of robotic surgery for rectal cancer are in lateral dissection, ie, the better understanding of how blood vessels and nerves travel around the internal iliac vessels and the associated anatomy of pelvic organs that comes from reliable lateral dissection. We have experienced a case of safe robotic-assisted radical resection of laterally invasive rectal cancer, which is considered to be relatively difficult, and we hereby report the usefulness of the robotic-assisted modality.
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Affiliation(s)
- Keisuke Yamazaki
- Dept. of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine
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Matsumoto T, Takayama K, Ishida K, Hayashi S, Hashimoto S, Kuroda R. Corrigenda. Bone Joint J 2021; 103-B:1641. [PMID: 34587812 DOI: 10.1302/0301-620x.103b10.bjj-2021-00021] [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: 11/05/2022]
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Takeuchi H, Matsumoto T, Morimoto K, Atsumi J, Yamamoto S, Nakagawa T, Yamada S, Kurosaki A, Shiraishi Y, Hasebe T. Pre-operative endovascular coil embolisation for chronic pulmonary aspergillosis. Int J Tuberc Lung Dis 2021; 25:725-731. [PMID: 34802494 DOI: 10.5588/ijtld.21.0028] [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] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE: To retrospectively evaluate the clinical outcomes of pre-operative endovascular coil embolisation (ECE) for chronic pulmonary aspergillosis (CPA).METHODS: We evaluated surgical patients with CPA between November 2016 and April 2020. Pre-operative ECE for CPA with severe adhesions was selectively performed to reduce intra-operative blood loss. ECE procedures, operative procedures, intra-operative blood loss and complications were evaluated.RESULTS: Twenty-eight patients (21 males and 7 females; median age: 55 years) were included in the study. Of the 28 patients, 8 (28.6%) underwent pre-operative ECE. Technical success rate in pre-operative ECE was 100%. The median time required for ECE procedures was 123 min. The median number of vessels embolised per procedure was 2.5. The median period between embolisation and surgery was 5 days. Major complications were observed in three patients (10.7%). There were no significant differences between patients with and without pre-operative ECE in operative time (284 vs. 365 min, respectively, P = 0.7602) and intra-operative blood loss (294 vs. 228 mL, respectively, P = 0.8987).CONCLUSIONS: Pre-operative ECE for CPA appears to be feasible and safe; however, its role in reducing intra-operative blood loss needs further investigation.
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Affiliation(s)
- H Takeuchi
- Department of Diagnostic Radiology, Fukujuji Hospital, Japan Anti-Tuberculosis Association (JATA), Tokyo, Japan
| | - T Matsumoto
- Kochi Medical School, Kochi University, Kochi, Japan, Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - K Morimoto
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - J Atsumi
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - S Yamamoto
- Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- Department of General Thoracic Surgery, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - S Yamada
- Department of General Thoracic Surgery, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
| | - A Kurosaki
- Department of Diagnostic Radiology, Fukujuji Hospital, Japan Anti-Tuberculosis Association (JATA), Tokyo, Japan
| | - Y Shiraishi
- Respiratory Disease Center, Fukujuji Hospital, JATA, Tokyo, Japan
| | - T Hasebe
- Department of Radiology, Tokai University Hachioji Hospital, Tokai University School of Medicine, Tokyo, Japan
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Ikoma T, Satake H, Matsumoto T, Boku S, Shibata N, Takatani M, Nagai H, Yasui H. P-182 A multicenter study of prognostic factors in nivolumab monotherapy for advanced or recurrent esophageal cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.237] [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: 11/25/2022] Open
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Takahashi N, Izawa N, Nishio K, Masuishi T, Shoji H, Yamamoto Y, Matsumoto T, Sugiyama K, Kajiwara T, Kawakami K, Aomatsu N, Kawakami H, Esaki T, Narita Y, Hara H, Horie Y, Boku N, Miura K, Moriwaki T, Shimokawa M, Nakajima T, Muro K. O-6 Gene alterations in ctDNA related to the resistance mechanism of anti-EGFR antibodies and clinical efficacy outcomes of anti-EGFR antibody rechallenge plus trifluridine/tipiracil in metastatic colorectal cancer patients in WJOG8916G trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.010] [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: 10/20/2022] Open
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Matsumoto T, Ikoma T, Nagai H, Yasui H. P-146 Clinical usefulness of next generation sequencing by liquid biopsy for advanced gastric cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.201] [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: 11/28/2022] Open
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Masuishi T, Izawa N, Takahashi N, Shoji H, Yamamoto Y, Matsumoto T, Sugiyama K, Kajiwara T, Kawakami K, Aomatsu N, Kondoh C, Kawakami H, Takegawa N, Esaki T, Narita Y, Hara H, Sunakawa Y, Boku N, Moriwaki T, Shimokawa M, Nakajima T, Muro K. SO-19 A multicenter phase Ⅱ trial of trifluridine/tipiracil in combination with cetuximab in RAS wild-type metastatic colorectal cancer patients refractory to prior anti-EGFR antibody therapy: The WJOG8916G trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.043] [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: 10/20/2022] Open
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Shoji H, Tsuda T, Shimokawa M, Akiyoshi K, Tokunaga S, Kunieda K, Kotaka M, Matsumoto T, Nagata Y, Mizukami T, Mizuki F, Danenberg K, Sunakawa Y, Boku N, Nakajima T. P-100 A phase II study of first-line chemotherapy initiating FOLFIRI+cetuximab and switching to FOLFIRI+bevacizumab according to early tumor shrinkage at 8 weeks in RAS wild-type metastatic colorectal cancer: HYBRID trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.155] [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: 11/28/2022] Open
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Matsumoto T, Chen Y, Contreras-Sanz A, Ikeda K, Sano T, Roberts M, Moskalev I, Black P. FBXW7 loss identifies a subgroup of bladder cancer patients with poor prognosis who benefit from neoadjuvant chemotherapy. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00838-1] [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: 11/25/2022]
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Toya Y, Yamada S, Yanai S, Miyajima S, Matsumoto T. Gastrointestinal: Endoscopic removal of a migrating esophageal metallic stent. J Gastroenterol Hepatol 2021; 36:1151. [PMID: 33241866 DOI: 10.1111/jgh.15334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/23/2020] [Revised: 09/03/2020] [Accepted: 11/03/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Y Toya
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - S Yamada
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - S Yanai
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - S Miyajima
- Division of Hematology and Oncology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - T Matsumoto
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
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Tobin M, Roche T, Matsumoto T. MHD mode identification by higher order singular value decomposition of C-2W Mirnov probe data. Rev Sci Instrum 2021; 92:043510. [PMID: 34243485 DOI: 10.1063/5.0043802] [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: 01/11/2021] [Accepted: 03/17/2021] [Indexed: 06/13/2023]
Abstract
The C-2W device (also known as "Norman") at TAE Technologies has proven successful at generating stable, long-lived field-reversed configuration (FRC) plasmas with record temperatures. The largest Mirnov probe array in C-2W measures three components of the magnetic field just inside the vessel wall at 64 locations distributed approximately evenly in the cylindrical vessel's azimuthal and axial dimensions. This nearly rectangular array of probes creates a unique opportunity to apply higher order singular value decomposition (HOSVD) to efficiently analyze the external magnetic field data for the purposes of reconstructing the magnetohydrodynamic mode structures in the FRC. In the first application of this method for this purpose, HOSVD is shown to quickly and effectively detect and separate toroidal modes while indicating longitudinal dependence of mode phases and amplitudes, enhancing the coherence and utility of the vast quantity of data produced by this array. Analysis of the data from the entire array at once via HOSVD proves not only computationally more efficient than methods that separately analyze groups of probes at different axial locations but also leads to improved mode resolution at axial locations where these modes are weaker.
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Affiliation(s)
- M Tobin
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Roche
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Matsumoto
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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Matsumoto T, Kanaya M, Ishimura K, Tokuda IT. Experimental study of vocal-ventricular fold oscillations in voice production. J Acoust Soc Am 2021; 149:271. [PMID: 33514158 DOI: 10.1121/10.0003211] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 12/15/2020] [Indexed: 06/12/2023]
Abstract
Ventricular folds are located in the supraglottal region above the vocal folds. Although the ventricular folds do not vibrate under normal vocalizations, they vibrate under certain conditions, e.g., throat singing or ventricular fold dysphonia. In throat singing, the ventricular folds vibrate at the same frequency as (or at integer ratios of) the vocal fold vibration frequency. In ventricular fold dysphonia, on the other hand, the ventricular folds interfere with the vocal folds, giving rise to a hoarse voice. In the present study, the synthetic larynx model was utilized to examine the vocal-ventricular fold oscillations. Our experiments revealed that the vocal and ventricular folds can co-oscillate at the same frequency with an out-of-phase relation. Compared to the control condition, under which no ventricular folds exist, the phonation threshold pressure was increased in the presence of the ventricular folds. Acoustic analysis indicated that jitter was reduced and vocal efficiency was increased by the ventricular folds. Distance between the vocal and ventricular folds did not alter these oscillation properties. A computational model was further simulated to elucidate the mechanism underlying the observed vocal-ventricular fold oscillations. It has been suggested that out-of-phase oscillations of the vocal and ventricular folds are important for sustaining periodic laryngeal vibrations.
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Affiliation(s)
- Takuma Matsumoto
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Mayuka Kanaya
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Kazuyoshi Ishimura
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Isao T Tokuda
- Graduate School of Science and Engineering, Ritsumeikan University, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
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Matsumoto T, Wakefield L, Grompe M. The Significance of Polyploid Hepatocytes During Aging Process. Cell Mol Gastroenterol Hepatol 2020; 11:1347-1349. [PMID: 33359651 PMCID: PMC8022248 DOI: 10.1016/j.jcmgh.2020.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 12/10/2022]
Affiliation(s)
- T. Matsumoto
- Department of Pediatrics, Oregon Health and Science University, Portland, Oregon,Department of Molecular Microbiology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan,Address correspondence to: Tomonori Matsumoto, MD, PhD, Department of Molecular Microbiology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan. fax: +81-6-6105-5882.
| | - L. Wakefield
- Department of Pediatrics, Oregon Health and Science University, Portland, Oregon
| | - M. Grompe
- Department of Pediatrics, Oregon Health and Science University, Portland, Oregon
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Haneda R, Hiramatsu Y, Kawata S, Honke J, Watanabe K, Shirai Y, Nagafusa T, Soneda W, Hirotsu A, Matsumoto T, Morita Y, Kikuchi H, Kamiya K, Yamauchi K, Takeuchi H. Effectiveness of multidisciplinary team management with prevention of pneumonia and long-term weight loss after esophagectomy. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.576] [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: 10/23/2022]
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Hiramatsu Y, Kawata S, Watanabe K, Honke J, Shirai Y, Haneda R, Soneda W, Hirotsu A, Matsumoto T, Morita Y, Kikuchi H, Kamiya K, Yamauchi K, Takeuchi H. Clinical study on the usefulness of preoperative short-term program for nutrition and exercise before esophagectomy. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.581] [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: 10/23/2022]
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Abstract
Abstract
The development of deep learning technology has enabled machines to achieve high-level accuracy in interpreting medical images. While many previous studies have examined the detection of pulmonary nodules and cardiomegaly in chest X-rays using deep learning, the application of this technology to heart failure remains rare. In this study, we investigated the performance of a deep learning algorithm in terms of diagnosing heart failure using images obtained from chest X-rays. We used 952 chest X-ray images from a labeled database published by the National Institutes of Health. Two cardiologists respectively verified and relabeled these images, for a total of 260 “normal” and 378 “heart failure” images, and the remainder were discarded because they had been incorrectly labeled. In this study “heart failure” was defined as “cardiomegaly or congestion”, in a chest X-ray with cardiothoracic ratio (CTR) over 50% or radiographic presence of pulmonary edema. To enable the machine to extract a sufficient number of features from the images, we used the general machine learning approach called data augmentation and transfer learning. Owing mostly to this technique and the adequate relabeling process, we established a model to detect heart failure in chest X-ray by applying deep learning, and obtained an accuracy of 82%. Sensitivity and specificity to heart failure were 75% and 94.4%, respectively. Furthermore, heatmap imaging allowed us to visualize decisions made by the machine. The figure shows randomly selected examples of the prediction probabilities and heatmaps of the chest X-rays from the dataset. The original image is on the left and its heatmap is on the right, with its prediction probability written below. The red areas on the heatmaps show important regions, according to which the machine determined the classification. While some images with ambiguous radiolucency such as (e) and (f) were prone to be misdiagnosed by this model, most of the images like (a)–(d) were diagnosed correctly. Deep learning can thus help support the diagnosis of heart failure using chest X-ray images.
Heatmaps and probabilities of prediction
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): JSPS KAKENHI
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Affiliation(s)
| | - S Kodera
- The University of Tokyo, Tokyo, Japan
| | | | - A Kiyosue
- The University of Tokyo, Tokyo, Japan
| | | | - H Akazawa
- The University of Tokyo, Tokyo, Japan
| | - I Komuro
- The University of Tokyo, Tokyo, Japan
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Kakubari S, Sakaida K, Asano M, Aramaki Y, Ito H, Yasui A, Iwamaru K, Kaneda T, Kitamura M, Matsumoto T, Miyamoto M, Mizuta K, Mochizuki T, Morioka M, Namura H, Yamoto R. Determination of Lycopene Concentration in Fresh Tomatoes by Spectrophotometry: A Collaborative Study. J AOAC Int 2020; 103:1619-1624. [PMID: 33112388 DOI: 10.1093/jaoacint/qsaa050] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Lycopene has been the object of considerable research attention recently, and the effects of the intake of lycopene, or of tomato products, have been studied in various ways. In Japan, interest in the health-promoting function of food components has increased. OBJECTIVE Developing a method to determine lycopene contents in tomato that meets the Japanese Agricultural Standard (JAS). METHOD In the proposed JAS method, the test sample consists of fresh tomatoes; a hexane-acetone mixture is utilized as the extraction solvent. A collaborative study was conducted to evaluate the interlaboratory performance of the method. RESULTS Ten laboratories participated and analyzed six test materials characterized by a lycopene content between 39 and 170 mg/kg as blind duplicates. After removing statistical outliers, RSDr ranged from 1.2 to 3.0% and RSDR ranged from 2.4 to 4.2%. The HorRat values were calculated and found to be in the 0.26-0.49 range. CONCLUSIONS The method for determining the lycopene content in tomato was evaluated by means of a collaborative study, and the reproducibility of this method was found to be acceptable. HIGHLIGHTS Intended for standardization in Japan, a method to determine lycopene content in tomato has been developed and shown to have acceptable precision in a collaborative study.
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Affiliation(s)
- Sachiko Kakubari
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Kenichi Sakaida
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Masahiro Asano
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Yoshinori Aramaki
- Kagome Co., Ltd, 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan
| | - Hidekazu Ito
- Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
| | - Akemi Yasui
- Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
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Fujiwara K, Fujiwara H, Yoshida H, Satoh T, Yonemori K, Nagao S, Matsumoto T, Kobayashi H, Bourgeois H, Harter P, Mosconi A, Palacio I, Reinthaller A, Fujita T, Bloomfield R, Pujade-Lauraine E, Ray-Coquard I. 236O Olaparib (ola) plus bevacizumab (bev) as maintenance (mx) therapy in patients (pts) with newly diagnosed advanced ovarian carcinoma (OC): Japan subset of the PAOLA-1 trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.230] [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: 10/22/2022] Open
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39
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Yamada L, Saito M, Kase K, Nakajima S, Endo E, Ujiie D, Min A, Ashizawa M, Matsumoto T, Kanke Y, Nakano H, Ito M, Onozawa H, Okayama H, Fujita S, Sakamoto W, Saze Z, Momma T, Mimura K, Kono K. 75P The evaluation of selective sensitivity of EZH2 inhibitors based on synthetic lethality in ARID1A-deficient gastric cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.095] [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: 11/16/2022] Open
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Ikoma T, Satake H, Kotaka M, Matsumoto T, Yasui H. 95P Prognosis of Japanese patients with detailed RAS/BRAF mutant colorectal cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.115] [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: 10/22/2022] Open
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Abstract
During orofacial tissue development, the anterior and posterior regions of the Meckel's cartilage undergo mineralization, while the middle region undergoes degeneration. Despite the interesting and particular phenomena, the mechanisms that regulate the different fates of Meckel's cartilage, including the effects of biomechanical cues, are still unclear. Therefore, the purpose of this study was to systematically investigate the course of Meckel's cartilage during embryonic development from a biomechanical perspective. Histomorphological and biomechanical (stiffness) changes in the Meckel's cartilage were analyzed from embryonic day 12 to postnatal day 0. The results revealed remarkable changes in the morphology and size of chondrocytes, as well as the occurrence of chondrocyte burst in the vicinity of the mineralization site, an often-seen phenomenon preceding endochondral ossification. To understand the effect of biomechanical cues on Meckel's cartilage fate, a mechanically tuned 3-dimensional hydrogel culture system was used. At the anterior region, a moderately soft environment (10-kPa hydrogel) promoted chondrocyte burst and ossification. On the contrary, at the middle region, a more rigid environment (40-kPa hydrogel) enhanced cartilage degradation by inducing a higher expression of MMP-1 and MMP-13. These results indicate that differences in the biomechanical properties of the surrounding environment are essential factors that distinctly guide the mineralization and degradation of Meckel's cartilage and would be valuable tools for modulating in vitro cartilage and bone tissue engineering.
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Affiliation(s)
- M Farahat
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - G A S Kazi
- Department of Applied Life Systems Engineering, Graduate School of Science and Engineering, Yamagata University, Yamagata, Japan
| | - E S Hara
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - T Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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Matsumoto T, Itoh S, Yoshizumi T, Kurihara T, Yoshiya S, Mano Y, Takeishi K, Harada N, Ikegami T, Soejima Y, Baba H, Mori M. C-reactive protein : albumin ratio in patients with resectable intrahepatic cholangiocarcinoma. BJS Open 2020; 4:1146-1152. [PMID: 32959537 PMCID: PMC7709369 DOI: 10.1002/bjs5.50348] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 07/15/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The C-reactive protein : albumin ratio (CAR) has been reported as a novel prognostic marker in several cancers. The aim of this study was to investigate the prognostic value of CAR in patients with intrahepatic cholangiocarcinoma (ICC). METHODS This was a single-centre retrospective study of patients who underwent surgery for ICC in a university hospital in Japan between 1998 and 2018. CAR, Glasgow Prognostic Score (GPS) and modified GPS (mGPS) were calculated. Their correlation with recurrence-free survival (RFS) and overall survival (OS) was analysed with Cox proportional hazards models. RESULTS Seventy-two patients were included in the study. Patients were divided into two groups according to the optimal CAR cut-off value of 0·02. CAR above 0·02 was associated with higher carbohydrate antigen 19-9 levels (20·5 versus 66·1 units/ml for CAR of 0·02 or less; P = 0·002), larger tumour size (3·2 versus 4·4 cm respectively; P = 0·031) and a higher rate of microvascular invasion (9 of 28 versus 25 of 44; P = 0·041). RFS and OS were shorter in patients with CAR above 0·02: hazard ratio (HR) 4·31 (95 per cent c.i. 2·02 to 10·63) and HR 4·80 (1·85 to 16·40) respectively. In multivariable analysis CAR above 0·02 was an independent prognostic factor of RFS (HR 3·29 (1·33 to 8·12); P < 0·001), but not OS. CONCLUSIONS CAR was associated with prognosis in patients who had hepatic resection for ICC.
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Affiliation(s)
- T. Matsumoto
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
- Department of Gastroenterological SurgeryGraduate School of Life Sciences, Kumamoto UniversityKumamotoJapan
| | - S. Itoh
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - T. Yoshizumi
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - T. Kurihara
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - S. Yoshiya
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - Y. Mano
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - K. Takeishi
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - N. Harada
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - T. Ikegami
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - Y. Soejima
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
| | - H. Baba
- Department of Gastroenterological SurgeryGraduate School of Life Sciences, Kumamoto UniversityKumamotoJapan
| | - M. Mori
- Department of Surgery and ScienceGraduate School of Medical Sciences, Kyushu UniversityFukuokaJapan
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Yoneda H, Makishima K, Enoto T, Khangulyan D, Matsumoto T, Takahashi T. Sign of Hard-X-Ray Pulsation from the γ-Ray Binary System LS 5039. Phys Rev Lett 2020; 125:111103. [PMID: 32975983 DOI: 10.1103/physrevlett.125.111103] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/31/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
To understand the nature of the brightest γ-ray binary system LS 5039, hard x-ray data of the object, taken with the Suzaku and NuSTAR observatories in 2007 and 2016, respectively, were analyzed. The two data sets jointly gave tentative evidence for a hard x-ray periodicity, with a period of ∼9 s and a period increase rate by ∼3×10^{-10} s s^{-1}. Therefore, the compact object in LS 5039 is inferred to be a rotating neutron star, rather than a black hole. Furthermore, several lines of arguments suggest that this object has a magnetic field of several times ∼10^{10} T, two orders of magnitude higher than those of typical neutron stars. The object is hence suggested to be a magnetar, which would be the first to be found in a binary. The results also suggest that the highly efficient particle acceleration process, known to be operating in LS 5039, emerges through interactions between dense stellar winds from the massive primary star, and ultrastrong magnetic fields of the magnetar.
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Affiliation(s)
- H Yoneda
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8583, Japan
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Makishima
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8583, Japan
| | - T Enoto
- Extreme natural phenomena RIKEN Hakubi Research Team, Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Khangulyan
- Department of Physics, Rikkyo University, 3-34-1 Nishi Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - T Matsumoto
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Takahashi
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8583, Japan
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Tanaka N, Kunihiro Y, Kawano R, Yujiri T, Ueda K, Gondo T, Matsumoto T. Chest complications in immunocompromised patients without acquired immunodeficiency syndrome (AIDS): differentiation between infectious and non-infectious diseases using high-resolution CT findings. Clin Radiol 2020; 76:50-59. [PMID: 32859382 DOI: 10.1016/j.crad.2020.07.029] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/28/2020] [Indexed: 01/15/2023]
Abstract
AIM To differentiate between infectious and non-infectious diseases occurring in immunocompromised patients without acquired immunodeficiency syndrome (AIDS) using high-resolution computed tomography (HRCT). MATERIALS AND METHODS HRCT images of 555 patients with chest complications were reviewed retrospectively. Infectious diseases (n=341) included bacterial pneumonia (n=123), fungal infection (n=80), septic emboli (n=11), tuberculosis (n=15), pneumocystis pneumonia (n=101), and cytomegalovirus pneumonia (n=11), while non-infectious diseases (n=214) included drug toxicity (n=84), infiltration of underlying diseases (n=83), idiopathic pneumonia syndrome (n=34), diffuse alveolar haemorrhage (n=8), and pulmonary oedema (n=5). Lung parenchymal abnormalities were compared between the two groups using the χ2 test and multiple logistic regression analysis. RESULTS The χ2 test results showed significant differences in many HRCT findings between the two groups. Multiple logistic regression analysis results indicated the presence of nodules with a halo and the absence of interlobular septal (ILS) thickening were the significant indicators that could differentiate infectious from non-infectious diseases. ILS thickening was generally less frequent among most infectious diseases and more frequent among most non-infectious diseases, with a good odds ratio (7.887, p<0.001). The sensitivity and accuracy for infectious diseases in the absence of ILS thickening were better (70% and 73%, respectively) than those of nodules with a halo (19% and 48%, respectively), while the specificity in the nodules with a halo was better (93%) than that of ILS thickening (78%). CONCLUSIONS The presence of nodules with a halo or the absence of ILS thickening tends to suggest infectious disease. Specifically, ILS thickening seems to be a more reliable indicator.
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Affiliation(s)
- N Tanaka
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Y Kunihiro
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - R Kawano
- Center for Clinical Research, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - T Yujiri
- Department of Clinical Laboratory Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - K Ueda
- Department of Surgery and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - T Gondo
- Division of Surgical Pathology, Yamaguchi University Hospital, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - T Matsumoto
- Yamaguchi Health and Service Association, 3-1-1 Yosiki-simohigashi, Yamaguchi, Yamaguchi, 753-0814, Japan
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Nishikawa H, Taniguchi Y, Ogasawara M, Inotani S, Amano E, Matsumoto T, Hamada-Ode K, Shimamura Y, Horino T, Fujimoto S, Terada Y. AB1050 CLINICAL IMPLICATIONS OF ULTRASONOGRAPHY (US) IN DIAGNOSIS AND MONITORING DISEASE ACTIVITY OF RELAPSING POLYCHONDRITIS (RP) AND COMPARATIVE INVESTIGATION BY US BETWEEN AURICLE OF RP, REPEATED TRAUMA, CELLULITIS AND HEALTHY SUBJECT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4158] [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: 11/03/2022]
Abstract
Objectives:To assess the clinical implications of ultrasonography (US) in monitoring disease activity and diagnosis of relapsing polychondritis (RP).Methods:Firstly, auricular (n=5) and nasal (n=1) chondritis of six patients with RP were assessed by US before and after treatments. The relationship between US findings and serum markers were evaluated. Moreover, the comparisons of US findings between the auricle of patients with RP (n=5), repeated trauma (n=5), cellulitis (n=2) and healthy subjects (n=5) were also assessed.Results:US finding before treatment showed low-echoic swollen auricular and nasal cartilage with increased power Doppler signals (PDS) in all cases of RP. US findings corresponded to biopsy findings. After treatment, the swollen ear and nose completely resolved. Then, US findings also showed dramatic reductions in swollen cartilage with the decrease in PDS. Although serum markers completely improved, US finding remained in 1 of 6 cases, and this case showed flare due to PSL tapering. Finally, RP could be differentiated from the damage of repeated trauma and cellulitis by the presence or absence of PDS and subperichondrial serous effusion.Conclusion:US of auricular and nasal cartilage in RP possibly facilitates evaluation of auricular lesions and monitoring of disease activity, especially when we consider the treatment response and the timing of drug tapering.Disclosure of Interests:None declared
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Matsumoto T, Tsuboi S, Amano T. SAT0083 PREVALENCE OF DYSPHAGIA AND ASSOCIATED RISK FACTORS IN ELDERLY PATIENTS WITH RHEUMATOID ARTHRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.573] [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: 11/03/2022]
Abstract
Background:Dysphagia (swallowing disorder) is an important health concern among the elderly that is associated with a poor prognosis [1]. Rheumatic diseases such as dermatomyositis are thought to represent an important risk factor for dysphagia, but few studies have described the association between dysphagia and rheumatoid arthritis (RA), and details on the prevalence of dysphagia in RA patients is not known [2] [3].Objectives:The present study aimed to determine the prevalence of dysphagia and associated risk factors among elderly patients with rheumatoid arthritis.Methods:We conducted a cross-sectional study including 93 patients with RA and osteoarthritis (OA) over 65 years of age. OA patients were included in the study as healthy controls. Patients with a history of stroke, neuromuscular disease, or head and neck tumors were excluded from the study. From July to November 2019, the water swallowing test (WST) and repetitive saliva swallowing test (RSST) were performed to evaluate the presence or absence of dysphagia in the patients. We also checked oral conditions, hoarseness, temporomandibular joint symptoms, cervical range of motion limitations, and grip strength. In addition, interviews were conducted to investigate swallowing ability and aspiration history. We compared the prevalence of dysphagia between RA and OA patients and explored potential risk factors for dysphagia in RA patients using logistic regression models.Results:Our study subjects comprised 63 RA patients (mean age, 73.8 years; 86.5% female) and 30 OA patients (mean age, 75.8 years; 82.3% female). The WST and RSST revealed that RA patients had a significantly higher prevalence of dysphagia than OA patients (23.8% vs 6.7%, p<0.05). While RA patients with dysphagia (n=15) were significantly older and had a longer disease duration than the OA patients, we observed no difference in disease activity or administrated drugs. Of the RA patients with dysphagia, 60% reported no previous episodes of aspiration. Increasing age (odds ratio (OR) 3.21, 95% confidence interval (CI) 1.06-4.56), cervical range of motion limitations (OR 3.14, 95% CI 1.02-7.24), opening disorder of the jaw (OR 2.26, 95% CI 1.12-4.86), and decreased grip strength (OR 1.96, 95% CI 1.01-4.15) were identified as factors related to the presence of dysphagia. Coexistence of Sjogren’s syndrome did not significantly affect the prevalence of dysphagia.Conclusion:Dysphagia was more prevalent among RA patients than in OA patients, suggesting an association with temporomandibular involvement, cervical disorder, and muscle weakness. Subclinical dysphagia should be assessed and monitored carefully in the clinical course of elderly patients with RA.References:[1] KW Altman et al. Consequence of dysphagia in the hospitalized patient: impact on prognosis and hospital resources. Arch Otolaryngol Head Neck Surg. 2010 Aug; 136 (8):784-9.[2] Gilheaney Ó et al. The Prevalence of Oropharyngeal Dysphagia in Adults Presenting with Temporomandibular Disorders Associated with Rheumatoid Arthritis: A Systematic Review and Meta-analysis. Dysphagia. 2017 Oct; 32 (5):587-600.[3] Mugii N et al. Oropharyngeal Dysphagia in Dermatomyositis: Associations with Clinical and Laboratory Features Including Autoantibodies. PLoS One. 2016 May 11;11 (5):e0154746.Disclosure of Interests:None declared
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Tsuboi S, Matsumoto T, Kagawa Y. AB0106 THE SERUM N-ACETYLGLUCOSAMINE CONCENTRATIONS IN RHEUMATOID ARTHRITIS PATIENTS ARE ASSOCIATED WITH JOINT DESTRUCTION AND RELATED METABOLISM MORE THAN INFLAMMATORY CONDITION. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3637] [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: 11/03/2022]
Abstract
Background:In rheumatoid arthritis (RA) patients, synovitis causes severe articular cartilage damage. N-acetylglucosamine (NAc-Glc) is a component of gluglucosaminoglycans (GAG) such as hyaluronic acid (HA) and keratan sulfate (KS), heparan sulfate (HS). NAc-Glc concentration in plasma is thought to reflect the balance between biosynthesis and destruction of articular cartilage, however, few studies had examined the relationship between plasma NAc-Glc conncentration and RA activity.Objectives:NAc-Glc concentrations in RA patients were measured, and association with clinical indicators was assessed.Methods:A cross-sectional study was carried out including 60 RA cases. Using N-acetylglucosamine-d3 as standard, the serum of subjects were deproteinized by protein precipitation method with acetonitrile, then concentration of NAc-Glc was measured with high-speed liquid chromatography mass spectrometer (LC-MS / MS). Clinical evaluation items: basic metabolism, presence or absence of exercise habit, Larsen score of knee and wrist joint, therapeutic agents (csDMARDs, biologics and PSL), DAS28, CRP, MMP-3, modified HAQ score (mHAQ). Statically analyzed by Spearman non parametric test.Results:The age of 60 RA cases was 59.7±16.4 years, and the duration of the disease was 10.4±8.7 years. Biologics were used in 29 cases (TNF inhibitors in 16 cases, IL-6 inhibitors in 4 cases, Abatacept in 9 cases), MTX in 32 cases, and prednisolone in 15 cases.Plasma NAc-Glc concentration was 113±41 (ng/dl), DAS28CRP was 3.04±1.2, and mHAQ was 0.863±891. Plasma NAc-Glc concentration showed positive correlation with age (correlation coefficient 0.644), knee joint destruction (0.425), HAQ score (0.340), BUN (0.412), and RF (0.287). Plasma NAc-Glc concentrations also negatively correlated with eGFR (-0.597), MTX use (-0.389), basal metabolism (-0.313), and sex difference (-0.272). There was no correlation between plasma NAc-Glc concentration and body weight, BMI, DAS28, CRP, MMP-3, NTX, serum creatinine, hand joint disease, and transaminase.In this study, plasma NAc-Glc concentration had increased with age, and had have a negative correlation with basal metabolism. Considering these results, it is unlikely that NAc-Glc is released into plasma as a metabolite of synthesis promotion. Further, since NAc-Glc had a negative correlation (-0.389) with MTX as a folic acid inhibitor, it was supposed to be affected by protein synthesis reduction. Because no correlation between NAc-Glc and inflammation or bone metabolism markers was observed, NAc-Glc may represent removal of GAG from the cell membrane (shedding).In previous GAGs studies, in RA patients, HA, KS, CRP, DAS28, was very associated with arthritis, such as MMP-3.The concentration of NAc-Glc in plasma was more relevant to dysfunctions such as destruction and HAQ due to arthritis such as HAQ than inflammatory indicators such as DAS28, MMP-3 and CRP. It is appearing in the plasma by destruction by shedding, as an index to see the joint destruction, it was presumed to be a better indicator than the GAGs. It was also thought that there is a possibility that MTX affects cartilage substrate metabolism.Conclusion:Serum NAc-Glc concentration in rheumatoid arthritis patients may represent cartilage metabolism and joint destruction.References:[1]Y.Matsuura. et al.Ann.Rheum.Dis. 2018;77: 1219-1225[2]T D Spector.et al. Ann.Rheum.Dis. 1992;51: 1134-1137Disclosure of Interests:None declared
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Horino T, Nishikawa H, Inotani S, Matsumoto T, Ichii O, Terada Y. Anti-Ku antibody-related scleroderma-polymyositis overlap syndrome associated with thrombocytopaenia. QJM 2020; 113:349-350. [PMID: 31804683 DOI: 10.1093/qjmed/hcz313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Horino
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - H Nishikawa
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - S Inotani
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - T Matsumoto
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - O Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Japan
| | - Y Terada
- Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
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Horino T, Inotani S, Matsumoto T, Ichii O. Macromolecular creatine kinase Type 1 in a patient with anti-aminoacyl-tRNA synthetase autoantibody-related dermatomyositis. QJM 2020; 113:201-202. [PMID: 31599957 DOI: 10.1093/qjmed/hcz259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Horino
- From the Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505, Japan
| | - S Inotani
- From the Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505, Japan
| | - T Matsumoto
- From the Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505, Japan
| | - O Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Japan
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Gong T, Habara H, Sumioka K, Yoshimoto M, Hayashi Y, Kawazu S, Otsuki T, Matsumoto T, Minami T, Abe K, Aizawa K, Enmei Y, Fujita Y, Ikegami A, Makiyama H, Okazaki K, Okida K, Tsukamoto T, Arikawa Y, Fujioka S, Iwasa Y, Lee S, Nagatomo H, Shiraga H, Yamanoi K, Wei MS, Tanaka KA. Direct observation of imploded core heating via fast electrons with super-penetration scheme. Nat Commun 2019; 10:5614. [PMID: 31819056 PMCID: PMC6901506 DOI: 10.1038/s41467-019-13574-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 11/08/2019] [Indexed: 11/09/2022] Open
Abstract
Fast ignition (FI) is a promising approach for high-energy-gain inertial confinement fusion in the laboratory. To achieve ignition, the energy of a short-pulse laser is required to be delivered efficiently to the pre-compressed fuel core via a high-energy electron beam. Therefore, understanding the transport and energy deposition of this electron beam inside the pre-compressed core is the key for FI. Here we report on the direct observation of the electron beam transport and deposition in a compressed core through the stimulated Cu Kα emission in the super-penetration scheme. Simulations reproducing the experimental measurements indicate that, at the time of peak compression, about 1% of the short-pulse energy is coupled to a relatively low-density core with a radius of 70 μm. Analysis with the support of 2D particle-in-cell simulations uncovers the key factors improving this coupling efficiency. Our findings are of critical importance for optimizing FI experiments in a super-penetration scheme.
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Affiliation(s)
- T Gong
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.,Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, People's Republic of China
| | - H Habara
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.
| | - K Sumioka
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - M Yoshimoto
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Y Hayashi
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - S Kawazu
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - T Otsuki
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - T Matsumoto
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - T Minami
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - K Abe
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - K Aizawa
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Y Enmei
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Y Fujita
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - A Ikegami
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - H Makiyama
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - K Okazaki
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - K Okida
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - T Tsukamoto
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Y Arikawa
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Y Iwasa
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - S Lee
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - H Nagatomo
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - H Shiraga
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - K Yamanoi
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - M S Wei
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
| | - K A Tanaka
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan. .,Extreme Light Infrastructure: Nuclear Physics, 30 Reatorului, Magurele-Bucharest, 077125, Romania.
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