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Kayashima A, Horibe M, Iwasaki E, Bazerbachi F, Okada H, Nakajima Y, Mizukami Y, Machida Y, Kawasaki S, Kitago M, Kanai T. Non-interventional Management of Asymptomatic Diminutive Choledocholithiasis Versus Endoscopic Extraction in Consecutive Patients. Dig Dis Sci 2023; 68:4456-4465. [PMID: 37891439 DOI: 10.1007/s10620-023-08137-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/28/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Current guidelines recommend treating choledocholithiasis, regardless of symptoms or stone size, with endoscopic retrograde cholangiopancreatography (ERCP). However, asymptomatic choledocholithiasis, discovered incidentally on imaging, may carry a higher risk of ERCP-related adverse events, and some asymptomatic and diminutive stones may not cause biliary adverse events during extended follow-up. Therefore, we aimed to clarify the best treatment strategies for asymptomatic choledocholithiasis based on stone size. METHODS We retrospectively identified patients with incidental imaging-found asymptomatic diminutive (≤ 4 mm) or non-diminutive (> 4 mm) choledocholithiasis and divided them into two groups: those who did not undergo ERCP and were treated when complications arose (on-demand group) and those who underwent ERCP before being symptomatic (intervention group). Adverse events were defined as any biliary or pancreatic complication related to ERCP or arising during observation or after intervention. The primary outcome was the adjusted overall adverse event-free survival using the propensity score-based matching weights method comparing the two groups of stone size. RESULTS Among 148 patients identified (median follow-up period, 969 days), 68 had diminutive stones and 80 had non-diminutive stones. Of the 68 patients with diminutive stones, 51 were in the on-demand group and 17 in the intervention group. The overall adjusted adverse event-free survival was significantly higher in the on-demand group for diminutive stones (97.4% and 70.1%, respectively, at 3 years; p = 0.01). DISCUSSION Patients with incidental imaging-detected asymptomatic diminutive choledocholithiasis may benefit from clinical observation, pursuing ERCP when symptoms develop.
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Affiliation(s)
- Atsuto Kayashima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Gastroenterology and Hepatology, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Fateh Bazerbachi
- CentraCare, Interventional Endoscopy Program, St. Cloud Hospital, St. Cloud, MN, USA
| | - Haruka Okada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yuki Nakajima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yosuke Mizukami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Minoru Kitago
- Department of Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Nakajima Y, Iwasaki E, Kayashima A, Machida Y, Kawasaki S, Horibe M, Kawaida M, Masugi Y, Iwata T, Kanai T. Successful radiotherapy for recurrent obstructive pancreatitis secondary to pancreatic metastasis from cervical squamous-cell carcinoma. Clin J Gastroenterol 2023; 16:755-760. [PMID: 37269479 DOI: 10.1007/s12328-023-01817-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 05/22/2023] [Indexed: 06/05/2023]
Abstract
Metastatic pancreatic cancer is a rare condition and cases of pancreatic metastasis from cervical cancer are infrequently reported. Furthermore, the incidence rates of pancreatic tumors as the cause of pancreatitis and of pancreatitis in patients with pancreatic tumors are similarly low. Pancreatitis may occur when a tumor obstructs the pancreatic duct. This condition may be difficult to manage and significantly reduces the quality of life because of severe abdominal pain. Here, we present a rare case of obstructive pancreatitis caused by pancreatic metastasis from cervical squamous-cell carcinoma, pathologically confirmed using endoscopic ultrasonography-guided fine-needle biopsy and treated with palliative irradiation to achieve rapid therapeutic relief. It is important to obtain appropriate tissue samples, confirm the pathological diagnosis, and compare the pathological findings with those of the primary tumor to select the appropriate treatment for obstructive pancreatitis caused by a metastatic pancreatic tumor.
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Affiliation(s)
- Yuki Nakajima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan.
| | - Atsuto Kayashima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Miho Kawaida
- Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Yohei Masugi
- Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Iwata
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-Ku, Tokyo, 160-8582, Japan
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Fukuhara S, Iwasaki E, Kayashima A, Machida Y, Tamagawa H, Kawasaki S, Horibe M, Hori S, Abe Y, Kitago M, Ogata H, Kanai T. Endoscopic Diagnosis of Biliary Stricture Combined with Digital Cholangioscope: A Case Series. Healthcare (Basel) 2021; 10:healthcare10010012. [PMID: 35052176 PMCID: PMC8775675 DOI: 10.3390/healthcare10010012] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 11/18/2022] Open
Abstract
The endoscopic diagnosis of biliary tract lesions is applied as a non-invasive method; however, its diagnostic accuracy is not yet high. Moreover, digital cholangioscopy is used for directly visualizing the inside of the bile duct, resulting in a more precise biopsy. We present the case series of the outcomes of diagnosis using digital cholangioscopy in patients who underwent cholangioscopy for the evaluation of biliary stenosis in our department between January 2014 and March 2021. The controls were those who underwent a biopsy for biliary stenosis with conventional endoscopic retrograde cholangiopancreatography (ERCP). Background data for each case were collected, and the clinical outcomes by biopsy were evaluated, focusing on the accuracy of the diagnosis. Cholangioscopy was performed in 15 cases, while a conventional biopsy by ERCP was performed in 172 cases. Nine of 15 cases (60.0%) were diagnosed with cholangiocarcinoma. The number of specimens obtained through conventional ERCP and cholangioscopy was 2.5 ± 1.3 and 3.3 ± 1.5, respectively (p = 0.043). The diagnostic accuracy of conventional ERCP and cholangioscopy were 65.7% (113 of 172 cases) and 100%, respectively, which was significantly higher in the group with cholangioscopy. Digital cholangioscopy is useful when the diagnosis of the biliary stricture using the conventional ERCP method is difficult.
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Affiliation(s)
- Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.F.); (H.O.)
- National Hospital Organization Tokyo Medical Center, Division of Gastroenterology and Hepatology, Tokyo 152-8902, Japan;
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
- Correspondence: ; Tel.: +81-3-5363-3790
| | - Atsuto Kayashima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Hiroki Tamagawa
- National Hospital Organization Tokyo Medical Center, Division of Gastroenterology and Hepatology, Tokyo 152-8902, Japan;
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Shutaro Hori
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Yuta Abe
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Minoru Kitago
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.F.); (H.O.)
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
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Fukuhara S, Kato M, Iwasaki E, Machida Y, Tamagawa H, Kawasaki S, Sasaki M, Kiguchi Y, Takatori Y, Matsuura N, Nakayama A, Ogata H, Kanai T, Yahagi N. External drainage of bile and pancreatic juice after endoscopic submucosal dissection for duodenal neoplasm: Feasibility study (with video). Dig Endosc 2021; 33:977-984. [PMID: 33258135 DOI: 10.1111/den.13907] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/23/2020] [Accepted: 11/26/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Endoscopic submucosal dissection (ESD) for superficial duodenal epithelial tumors (SDETs) is technically difficult and has a high risk of adverse events. Endoscopic nasobiliary and nasopancreatic duct drainage (ENBPD) may reduce the risk of delayed adverse events by preventing exposure of the post-ESD mucosal defect to bile and pancreatic juice. This study was performed to evaluate the safety and feasibility of ENBPD after duodenal ESD. METHODS Patients who underwent ESD for SDETs from July 2010 to March 2020 were included. We collected data on the success rate of ENBPD, adverse events due to insertion of a side-viewing endoscope, and pancreatitis after ENBPD. We also collected the clinical outcomes of duodenal ESD, including the incidence rate of delayed adverse events (defined as bleeding or perforation found after the endoscopic procedure). RESULTS Among 70 patients without complete closure of the post-ESD mucosal defect, ENBPD was successfully performed in all 25 patients including 21 cases inserted immediately after ESD and four cases inserted later. There were no adverse events associated with ENBPD procedure intraoperatively, while pancreatitis after ENBPD occurred in four patients (16.0%). No patients who underwent immediate ENBPD required intervention for an intra-abdominal abscess or delayed perforation, whereas 3 of 49 patients (6.1%) who did not undergo immediate ENBPD required surgery or drainage of an abscess. CONCLUSIONS Endoscopic nasobiliary and nasopancreatic duct drainage is technically feasible and might provide effective prophylaxis for delayed adverse events, even if a large mucosal defect is present after ESD.
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Affiliation(s)
- Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Motohiko Kato
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Motoki Sasaki
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Yoshiyuki Kiguchi
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Yusaku Takatori
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Noriko Matsuura
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Atsushi Nakayama
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naohisa Yahagi
- Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
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Ichimura T, Nomura H, Shimizu H, Machida Y, Suzuki K. Cost-effectiveness of primary prophylaxis of febrile neutropenia with pegfilgrastim in docetaxel, cisplatin and 5-fluorouracil therapy for esophageal cancer. Pharmazie 2021; 76:450-454. [PMID: 34481537 DOI: 10.1691/ph.2021.1031] [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] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Objective: The efficacy of docetaxel, cisplatin, and 5-fluorouracil (DCF) therapy in treating esophageal cancer has been reported. However, febrile neutropenia (FN) is a potentially serious adverse event of DCF therapy with an incidence of 10 to 40%. Pegfilgrastim, a granulocyte colony-stimulating factor (G-CSF), has been shown to have a primary prophylactic role in FN. However, it has been suggested that excessive use of expensive G-CSF should be avoided. Therefore, we performed a cost-utility analysis of primary prophylaxis with pegfilgrastim. Design: Cost-effectiveness analysis using decision tree modelling. Methods: We used a decision tree analysis model based on the report of primary prophylaxis with pegfilgrastim. Based on a previous study, the FN incidence rate was set at 40.0% (95% confidence interval (CI): 11.9-68.1) for the pegfilgrastim group and 43.5% (95%CI: 21.6-65.4) for the no pegfilgrastim group. The FN treatment cost was US$726.63, and the duration of FN was 3.65±1.20 days. The utility value of patients who received DCF therapy was 0.643, and the change in utility value at FN onset was -0.15. Expected cost, quality-adjusted life year (QALY), and incremental cost-effectiveness ratio (ICER) were calculated, and cost-utility analysis was performed. Results: The ICER of pegfilgrastim was 184,976.75 USD/QALY. As a result of sensitivity analysis, the utility of FN had the greatest impact on the cost-effectiveness analysis, followed by the drug cost of pegfilgrastim. Conclusion: Primary prophylaxis of FN with pegfilgrastim might not be cost-effectiveness. In determining whether to administer pegfilgrastim it is necessary to consider patient factors, not just the incidence of FN.
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Affiliation(s)
- T Ichimura
- Department of Hospital Pharmaceutics, School of Pharmacy, Showa University, Japan
| | - H Nomura
- Department of Date Science/Pharmacy, National Cancer Center Hospital East, Japan
| | - H Shimizu
- Department of Pharmacy, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Japan; Department of Nursing, School of Nursing and Rehabilitation Sciences, Showa University, Japan
| | - Y Machida
- Department of Pharmacy, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Japan; Department of Nursing, School of Nursing and Rehabilitation Sciences, Showa University, Japan
| | - K Suzuki
- Division of Applied Pharmaceutical Education and Research, Hoshi University, Tokyo, Japan;,
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Fukuhara S, Iwasaki E, Iwano T, Machida Y, Tamagawa H, Kawasaki S, Seino T, Yokose T, Endo Y, Yoshimura K, Kashiwagi K, Kitago M, Ogata H, Takeda S, Kanai T. New strategy for evaluating pancreatic tissue specimens from endoscopic ultrasound-guided fine needle aspiration and surgery. JGH Open 2021; 5:953-958. [PMID: 34386605 PMCID: PMC8341188 DOI: 10.1002/jgh3.12617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/03/2021] [Accepted: 07/07/2021] [Indexed: 01/07/2023]
Abstract
Background and Aim Preoperative histological evaluation of pancreatic neoplasms is important for guiding the resection strategy and preventing postoperative adverse events. However, conventional endoscopic methods have technical limitations that reduce the accuracy of the histopathological examination. Probe electrospray ionization mass spectrometry (PESI‐MS) may be a useful technique for rapidly evaluating small specimens. Methods This single‐center prospective study included patients with pancreatic neoplasms between October 2018 and December 2019. Pancreatic ductal adenocarcinoma (PDAC) specimens were obtained via endoscopic ultrasound‐guided fine needle aspiration (EUS‐FNA) and non‐neoplastic tissue was obtained via surgery. Specimens were subjected to PESI‐MS and the mass spectra were analyzed using partial least squares regression‐discriminant analysis. Results The study included 40 patients with 20 nonneoplastic specimens and 19 PDAC specimens (1 case of neuroendocrine carcinoma was omitted). All nonneoplastic specimens were sufficient for PESI‐MS analysis, although only 7 of 19 PDAC specimens were sufficient for PESI‐MS analysis because of poor sample quality or insufficient quantity (<1 mg). Among the 27 analyzed cases, the mass spectra clearly differentiated between the PDAC and nonneoplastic specimens. Conclusions This study revealed that PESI‐MS could differentiate between PDAC and nonneoplastic specimens, even in cases where EUS‐FNA produced very small specimens.
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Affiliation(s)
- Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy Keio University School of Medicine Tokyo Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
| | - Tomohiko Iwano
- Department of Anatomy and Cell Biology University of Yamanashi Faculty of Medicine Yamanashi Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
| | - Takahiro Yokose
- Department of Surgery Keio University School of Medicine Tokyo Japan
| | - Yutaka Endo
- Department of Surgery Keio University School of Medicine Tokyo Japan
| | - Kentaro Yoshimura
- Department of Anatomy and Cell Biology University of Yamanashi Faculty of Medicine Yamanashi Japan
| | - Kazuhiro Kashiwagi
- Center for Preventive Medicine Keio University School of Medicine Tokyo Japan
| | - Minoru Kitago
- Department of Surgery Keio University School of Medicine Tokyo Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy Keio University School of Medicine Tokyo Japan
| | - Sen Takeda
- Department of Anatomy and Cell Biology University of Yamanashi Faculty of Medicine Yamanashi Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Tokyo Japan
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Iwasaki E, Fukuhara S, Horibe M, Kawasaki S, Seino T, Takimoto Y, Tamagawa H, Machida Y, Kayashima A, Noda M, Hayashi H, Kanai T. Endoscopic Ultrasound-Guided Sampling for Personalized Pancreatic Cancer Treatment. Diagnostics (Basel) 2021; 11:469. [PMID: 33800161 PMCID: PMC8000964 DOI: 10.3390/diagnostics11030469] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/27/2021] [Accepted: 02/27/2021] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer is the most lethal solid malignancy, and the number of patients with pancreatic cancer is increasing. Systemic chemotherapies are often ineffective for such patients, and there is an urgent need for personalized medicine. Unlike other types of cancer, personalized treatments for pancreatic cancer are still in development. Consequently, pancreatic cancer is less sensitive to anticancer drugs and is often refractory to common treatments. Therefore, advances in personalized medicine for pancreatic cancer are necessary. This review examined advances in personalized medicine for pancreatic cancer, including the use of endoscopic ultrasound (EUS)-guided sampling. EUS-guided sampling is widely used for diagnosing pancreatic tumors and is expected to be applied to sampled tissues. Additionally, there has been an increase in clinical research using EUS-guided sampling. The combination of precision medicine using genomic testing and pharmacological profiles based on high-throughput drug sensitivity testing using patient-derived organoids is expected to revolutionize pancreatic cancer treatment.
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Affiliation(s)
- Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan;
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Yoichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Atsuto Kayashima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Marin Noda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
| | - Hideyuki Hayashi
- Keio Cancer Center, Genomic Units, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan;
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (M.H.); (S.K.); (T.S.); (Y.T.); (H.T.); (Y.M.); (A.K.); (M.N.); (T.K.)
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Michishita M, Ishizaki Y, Konnai M, Machida Y, Nakahira R, Hatakeyama H, Yoshimura H, Yamamoto M, Soeta S, Ochiai K, Misawa K, Yugeta N, Azakami D. Primary Lymphangiosarcoma of the Urinary Bladder in a Dog. J Comp Pathol 2020; 179:31-35. [PMID: 32958144 DOI: 10.1016/j.jcpa.2020.06.014] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/21/2020] [Accepted: 06/24/2020] [Indexed: 11/18/2022]
Abstract
Abdominal ultrasonographical and computed tomography examinations of a 12-year-old neutered female toy poodle revealed a protruding mass, approximately 2 cm in diameter, at the apex of the bladder. The mass was firm and haemorrhagic with a homogeneously brownish-yellow cut surface. Microscopically, it was unencapsulated and located in the muscle layer with invasion of the extra-muscular layer. It was composed of spindloid to oval neoplastic cells that formed irregular clefts and diffuse sheets that dissected bundles of collagen. Immunohistochemically, the neoplastic cells were positive for vimentin and lymphatic vessel endothelial hyaluronan receptor 1 antigens, but negative for cytokeratin AE1/AE3, factor VIII-related antigen, CD31, CD34, Prox-1, S100, desmin, α-smooth muscle actin and MyoD1. Negative immunolabelling for laminin antigen supported the absence of evidence of a basal lamina on ultrastructural examination. Based on these findings, this tumour was identified as a lymphangiosarcoma. To the best of our knowledge, this case is the first report of lymphangiosarcoma arising from the bladder in a dog.
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Affiliation(s)
- M Michishita
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan.
| | - Y Ishizaki
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Konnai
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Y Machida
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - R Nakahira
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - H Hatakeyama
- Laboratory of Comparative Cellular Biology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - H Yoshimura
- Department of Applied Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Yamamoto
- Department of Applied Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - S Soeta
- Department of Veterinary Anatomy, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Ochiai
- Department of Basic Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University
| | | | | | - D Azakami
- Laboratory of Veterinary Clinical Oncology, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Machida Y, Fukuma E. Magnetic Resonance Imaging And Other Imaging Modalities Before And After Breast Cryosurgery. Cryobiology 2020. [DOI: 10.1016/j.cryobiol.2019.11.023] [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: 10/24/2022]
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Iwasaki E, Minami K, Itoi T, Yamamoto K, Tsuji S, Sofuni A, Tsuchiya T, Tanaka R, Tonozuka R, Machida Y, Takimoto Y, Tamagawa H, Katayama T, Kawasaki S, Seino T, Horibe M, Fukuhara S, Kitago M, Ogata H, Kanai T. Impact of electrical pulse cut mode during endoscopic papillectomy: Pilot randomized clinical trial. Dig Endosc 2020; 32:127-135. [PMID: 31222794 DOI: 10.1111/den.13468] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 06/16/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Endoscopic papillectomy is increasingly being used for ampullary adenoma treatment. However, it remains challenging despite increased safety with treatment advances. The ideal power output and electrosurgical current mode for mucosal resection are not established. We aimed to identify the ideal electrical pulse for use during resection. METHODS This pilot randomized, single-blind, prospective, multicenter trial, recruited patients with ampullary adenomas and conventional anatomy who were scheduled to undergo endoscopic papillectomy. Endoscopic treatment was performed using a standardized algorithm and patients were randomized for endoscopic papillectomy with Endocut or Autocut. The primary outcome was the incidence of delayed bleeding. Incidence of procedure-related pancreatitis, successful complete resection, pathological findings, and other adverse events were secondary endpoints. RESULTS Sixty patients were enrolled over a 2-year period. The incidences of delayed bleeding (13.3% vs. 16.7%, P = 1.00) and pancreatitis (27% vs. 30%, P = 0.77) were similar between both groups. The rate of crush artifacts was higher in the Endocut than in the Autocut group (27% vs. 3.3%, P = 0.03). Immediate bleeding when resecting tumors greater than 14 mm in diameter was more common in the Autocut than in the Endocut group (88% vs. 46%, P = 0.04). CONCLUSIONS The Autocut and Endocut modes have similar efficacy and safety for endoscopic papillectomy. The Endocut mode may prevent immediate bleeding in cases with large tumor sizes, although it causes more frequent crush artifacts. REGISTRY AND THE REGISTRATION NUMBER The Japanese UMIN Clinical Trials Registry (UMIN-CTR: 000021382).
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Affiliation(s)
- Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuhiro Minami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Kenjiro Yamamoto
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Shujiro Tsuji
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Atsushi Sofuni
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Takayoshi Tsuchiya
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Reina Tanaka
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Ryosuke Tonozuka
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yoichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Minoru Kitago
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Minami K, Iwasaki E, Kawasaki S, Fukuhara S, Seino T, Katayama T, Takimoto Y, Tamagawa H, Machida Y, Horibe M, Kitago M, Ogata H, Kanai T. A long (7 cm) prophylactic pancreatic stent decreases incidence of post-endoscopic papillectomy pancreatitis: a retrospective study. Endosc Int Open 2019; 7:E1663-E1670. [PMID: 31788550 PMCID: PMC6877413 DOI: 10.1055/a-1010-5581] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/06/2019] [Indexed: 02/06/2023] Open
Abstract
Background and study aims Endoscopic papillectomy (EP) is a minimally invasive treatment for ampullary neoplasms and is recognized as an alternative treatment to surgical resection; however, there are few reports on a suitable pancreatic stent (PS) after EP for preventing pancreatitis. The aim of this study was to evaluate the efficacy of a long PS after EP. Patients and methods In this retrospective single-center study, 39 patients with pathologically proven ampullary neoplasms who underwent EP between March 2012 and August 2018 were enrolled. The study participants were divided into two subgroups according to the PS length: those with a PS shorter than 5 cm (short PS group, n = 17) and those with a PS of 7 cm (long PS group, n = 22). The incidence of adverse events and risk factors for pancreatitis were evaluated. Results The diameter of all PSs was 5 Fr. Post-EP pancreatitis occurred in nine patients (23.1 %), with two cases of severe pancreatitis (5.1 %). Pancreatitis occurred more frequently in the short PS group (7/17, 41.2 %) than in the long PS group (2/22, 9.1 %) ( P = 0.026). There were no significant differences between the two groups in terms of other adverse events. Univariate and multivariate analyses showed that a long PS was the only factor associated with a decreased incidence of post-EP pancreatitis ( P = 0.042; odds ratio, 0.16; 95 % confidence interval, 0.027-0.94). Conclusion A long (7 cm) PS significantly decreased incidence of pancreatitis after EP. Prospective randomized studies with a larger number of patients and wider range of PS lengths are required.
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Affiliation(s)
- Kazuhiro Minami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yoichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Minoru Kitago
- Division of Hepato-Pancreato-Biliary and Transplant Surgery, Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan,Corresponding author Takanori Kanai MD, PhD Chief Professor, Division of Gastroenterology and HepatologyDepartment of Internal MedicineKeio University School of Medicine35 ShinanomachiShinjuku-ku, Tokyo 160-8582Japan+81-(0)3-3353-6247
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Matsunaga H, Machida Y, Nakagawa M, Yamaguchi M, Ogawara Y, Shima Y, Yamagata K, Katsumoto T, Hattori A, Itoh M, Seki T, Nishiya Y, Nakamura K, Suzuki K, Imaoka T, Suzuki M, Sampetrean O, Saya H, Ichimura K, Kitabayashi I. Characterization of a novel BBB-permeable mutant IDH1 inhibitor, DS-1001b. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz243.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Minami K, Iwasaki E, Fukuhara S, Horibe M, Seino T, Kawasaki S, Katayama T, Takimoto Y, Tamagawa H, Machida Y, Kanai T, Itoi T. Electric Endocut and Autocut Resection for Endoscopic Papillectomy: A Systematic Review. Intern Med 2019; 58:2767-2772. [PMID: 31243201 PMCID: PMC6815892 DOI: 10.2169/internalmedicine.2720-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Objective Risks of bleeding and pancreatitis after mucosal resection using the purecut/autocut and blendcut/endocut modes for endoscopic papillectomy have not been fully clarified. Thus, a systematic review on electrosurgical cutting modes for endoscopic papillectomy was conducted focusing on the types and incidence of adverse events. Methods We searched the PubMed and Cochrane library for cases of endoscopic papillectomy recorded as of April 2017. Studies reporting the methods of electrically excising a tumor in the duodenal papilla and the number of adverse events were extracted. Studies were collected and examined separately based on the electrosurgical cutting mode, and the incidence rate for each adverse event was summarized. Results A total of 159 relevant articles were found; among them, 20 studies were included and 139 excluded. Five studies analyzed endoscopic papillectomy with the purecut/autocut mode and 16 with the blendcut/endocut mode. Only one study investigated both modes (purecut and endocut). With the purecut/autocut mode, the incidence of bleeding was 2.8-50%, and that of pancreatitis was 0-50% (mean: 12.8%). With the blendcut/endocut mode, the incidence of bleeding was 0-42.3%, and that of pancreatitis was 0%-17.9% (mean: 9.5%). Conclusion Both methods had high adverse event rates for endoscopic papillectomy. Thus, a standard method of endoscopic papillectomy, including the electrosurgical cutting mode, needs to be established.
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Affiliation(s)
- Kazuhiro Minami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Youichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Japan
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Michishita M, Fujiwara-Igarashi A, Suzuki S, Hatakeyama H, Machida Y, Yoshimura H, Yamamoto M, Azakami D, Ochiai K, Ishiwata T, Fujita M. Diffuse Pulmonary Meningotheliomatosis with Sarcomatous Transformation in a Shiba Dog. J Comp Pathol 2019; 171:1-5. [PMID: 31540619 PMCID: PMC7094254 DOI: 10.1016/j.jcpa.2019.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/18/2019] [Accepted: 06/24/2019] [Indexed: 11/17/2022]
Abstract
A 2-year-old neutered female Shiba dog exhibited laboured breathing for 1 month. Computed tomography of the thoracic cavity revealed multiple nodules (2-5 mm diameter) in the lungs. Grossly, the lungs were firm and normal in shape. The nodules were grey-white in colour. Microscopically, the nodules were non-encapsulated and exhibited an irregular shape. They were composed of polygonal or spindle cells with indistinct cell borders arranged in sheets. The cells had large, round, hyperchromatic nuclei and abundant pale eosinophilic cytoplasm with no atypia. Intrapulmonary arterial emboli and infiltration into the bronchioles were observed. Immunohistochemically, the cells were positive for vimentin and negative for cytokeratin, glial fibrillary acidic protein and α-smooth muscle actin. Ultrastructurally, the cells displayed cytoplasmic processes, desmosomes and intermediate filaments. These findings led to a diagnosis of diffuse pulmonary meningotheliomatosis with sarcomatous transformation. To the best of our knowledge, this is the first report of diffuse pulmonary meningotheliomatosis in a dog.
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Affiliation(s)
- M Michishita
- Department of Veterinary Pathology, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo.
| | - A Fujiwara-Igarashi
- Division of Veterinary Radiology, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - S Suzuki
- Division of Veterinary Surgery, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - H Hatakeyama
- Laboratory of Comparative Cellular Biology, School of Veterinary Medicine, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - Y Machida
- Department of Veterinary Pathology, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - H Yoshimura
- Department of Applied Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - M Yamamoto
- Department of Applied Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - D Azakami
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
| | - K Ochiai
- Department of Basic Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Japan
| | - T Ishiwata
- Division of Aging and Carcinogenesis, Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - M Fujita
- Division of Veterinary Radiology, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo
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Takimoto Y, Iwasaki E, Masaoka T, Fukuhara S, Kawasaki S, Seino T, Katayama T, Minami K, Tamagawa H, Machida Y, Ogata H, Kanai T. Novel mainstream capnometer system is safe and feasible even under CO 2 insufflation during ERCP-related procedure: a pilot study. BMJ Open Gastroenterol 2019; 6:e000266. [PMID: 30899539 PMCID: PMC6398869 DOI: 10.1136/bmjgast-2018-000266] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/18/2019] [Accepted: 02/01/2019] [Indexed: 11/29/2022] Open
Abstract
Background and aims There is a need to safely achieve conscious sedation during endoscopic retrograde cholangiopancreatography (ERCP). We evaluated the safety and feasibility of a mainstream capnometer system to monitor apnoea during ERCP under CO2 insufflation. Methods Non-intubated adult patients undergoing ERCP-related procedures with intravenous sedation were enrolled. End-tidal CO2 (EtCO2) was continuously monitored during the procedure under CO2 insufflation using a mainstream capnometer system, comprising a capnometer and a specially designed bite block for upper gastrointestinal endoscopy and ERCP. Oxygen saturation (SpO2) was also monitored continuously during the procedure. In this study, we evaluated the safety and feasibility of the capnometer system. Results Eleven patients were enrolled. Measurement of EtCO2 concentration was possible from the beginning to the end of the procedure in all 11 cases. There was no measurement failure, dislocation of the bite block, or adverse event related to the bite block. Apnoea linked to hypoxaemia occurred five times (mean duration, 174.4 s). Conclusion This study confirmed that apnoea was detected earlier than when using a percutaneous oxygen monitor. Measurement of EtCO2 concentration using the newly developed mainstream capnometer system was feasible and safe even under CO2 insufflation.
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Affiliation(s)
- Yoichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tatsuhiro Masaoka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, KeioUniversity School of Medicine, Tokyo, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuhiro Minami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, KeioUniversity School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Minami K, Iwasaki E, Itoi T, Fukuhara S, Horibe M, Seino T, Kawasaki S, Katayama T, Takimoto Y, Tamagawa H, Machida Y, Hamamoto Y, Ogata H, Kanai T. Successful EUS-guided antegrade stenting for malignant severe biliary obstruction combined with a newly developed plastic stent. Endosc Int Open 2018; 6:E1336-E1339. [PMID: 30410954 PMCID: PMC6221811 DOI: 10.1055/a-0719-4861] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/25/2018] [Indexed: 11/03/2022] Open
Abstract
Background and study aims We report the effectiveness of a newly developed plastic stent for preventing bile leakage after endoscopic ultrasonography (EUS)-guided antegrade stenting. This treatment was performed on a 59-year-old woman with malignant obstructive jaundice caused by peritoneal metastasis. First, we attempted transpapillary drainage using short-type single-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography, but we could not achieve it. We then attempted EUS-guided antegrade stenting through the intrahepatic bile duct from the esophagojejunal anastomosis. We successfully inserted uncovered metallic stents for common bile duct and a newly plastic stent for hepaticojejunostomy from the antegrade approach. There were no adverse events after the treatment.
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Affiliation(s)
- Kazuhiro Minami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan,Corresponding author Eisuke Iwasaki, MD, PhD Division of Gastroenterology and HepatologyDepartment of Internal MedicineKeio University School of Medicine35 ShinanomachiShinjuku-ku, TokyoJapan+81-(0)3-5363-3967
| | - Takao Itoi
- Department of Gastroenterological Medicine, Tokyo Medical University, 6-7-1, Nishishinjuku, Shinjuku-ku, Tokyo, Japan
| | - Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Takashi Seino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Yoichi Takimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Hiroki Tamagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Yujiro Machida
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, Japan
| | - Yasuo Hamamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
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Fujii K, Washida N, Tokuyama H, Yoshifuji A, Kasai T, Machida Y, Yoshida Y, Kameyama K, Wakino S, Hayashi M, Itoh H. Multinuclear and Ground Glass-Formed Cells Detected in the Peritoneal Dialysate. Clin Infect Dis 2018. [DOI: 10.1093/cid/cix1135] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kentaro Fujii
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Naoki Washida
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
- Department of Diagnostic Pathology, School of Medicine, Keio University, Tokyo, Japan
| | - Hirobumi Tokuyama
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Ayumi Yoshifuji
- Department of Apheresis and Dialysis Center, School of Medicine, Keio University, Tokyo, Japan
| | - Takahiro Kasai
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Yujiro Machida
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Yukiko Yoshida
- Department of Nephrology, School of Medicine, International University of Health and Welfare
| | - Kaori Kameyama
- Department of Nephrology, School of Medicine, International University of Health and Welfare
| | - Shu Wakino
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | | | - Hiroshi Itoh
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
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Mizuno S, Wakui M, Machida Y, Hosoe N, Hisamatsu T, Ishida T, Kameyama K, Naganuma M, Kanai T. Increased levels of prostaglandin E-major urinary metabolite (PGE-MUM) in active mesenteric panniculitis patients: A case report. Medicine (Baltimore) 2017; 96:e9237. [PMID: 29390478 PMCID: PMC5758180 DOI: 10.1097/md.0000000000009237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Mesenteric panniculitis (MP) is a rare disease with abdominal and systemic symptoms and is characterized by nonspecific inflammation, fat necrosis, and fibrosis in mesenteric fat. Active inflammatory responses may increase levels of prostaglandin E-major urinary metabolite (PGE-MUM), which was reported to reflect the disease activity of ulcerative colitis and chronic fibrosing interstitial pneumonia. We recently experienced a case with elevated PGE-MUM at the time of diagnosis of MP and we investigated the potential of PGE-MUM as a biomarker. PATIENT CONCERN In this report we described 2 active mesenteric panniculitis patients with high PGE-MUM levels. DIAGNOSES Mesenteric panniculitis INTERVENTIONS:: Both MP patients were measured the levels of PGE-MUM. OUTCOMES Both MP patients exhibited high levels of PGE-MUM before treatment. In one, the levels were sensitively correlated with clinical symptoms and serological markers on steroids. LESSONS The study observations suggest the potential of PGE-MUM to reflect the disease activity of MP. To verify its use, more findings based on clinical studies should be accumulated.
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Affiliation(s)
- Shinta Mizuno
- Division of Gastroenterology and Hepatology, Department of Internal Medicine
| | | | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine
| | - Naoki Hosoe
- Center for Diagnostic and Therapeutic Endoscopy
| | - Tadakazu Hisamatsu
- The Third Department of Internal Medicine, Kyorin University School of Medicine
| | | | - Kaori Kameyama
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Naganuma
- Division of Gastroenterology and Hepatology, Department of Internal Medicine
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine
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Ishiguro Y, Kuroki T, Eguchi H, Machida Y, Hattori N, Miwa H. Pseudogout as a complication of acute ischemic stroke. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Hayashi Y, Ishii Y, Nagasawa J, Arai S, Okada H, Ohmi F, Umetsu T, Machida Y, Kurasawa K, Takemasa A, Suzuki S, Senoh T, Sada T, Hirata K. Subacute sarcoid myositis with ocular muscle involvement; a case report and review of the literature. Sarcoidosis Vasc Diffuse Lung Dis 2016; 33:297-301. [PMID: 27758998] [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] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/17/2016] [Indexed: 06/06/2023]
Abstract
Sarcoidosis is a chronic granulomatous disease that can affect multiple organs. The lungs, eyes, and skin are known to be highly affected organs in sarcoidosis. There have been reports based on random muscle biopsy that 32-80% of systemic sarcoidosis comprises noncaseating granulomas; however, muscle involvement in sarcoidosis is generally asymptomatic and has an unknown frequency. We describe a case of acute to subacute sarcoid myositis of the skeletal and extraocular muscles. Typical ophthalmic involvement (manifested by infiltration of the ocular adnexa, intraocular inflammation, or infiltration of the retrobulbar visual pathways) and extraocular sarcoid myositis (as with the present case) is infrequently reported. It is important to keep in mind the rare yet perhaps underestimated entity of sarcoid myositis, and to utilize muscle biopsy and imaging tests for appropriate diagnosis and management of patients with sarcoidosis.
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21
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Taupin M, Knebel G, Matsuda TD, Lapertot G, Machida Y, Izawa K, Brison JP, Flouquet J. Thermal Conductivity through the Quantum Critical Point in YbRh_{2}Si_{2} at Very Low Temperature. Phys Rev Lett 2015; 115:046402. [PMID: 26252699 DOI: 10.1103/physrevlett.115.046402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Indexed: 06/04/2023]
Abstract
The thermal conductivity of YbRh_{2}Si_{2} has been measured down to very low temperatures under field in the basal plane. An additional channel for heat transport appears below 30 mK, both in the antiferromagnetic and paramagnetic states, respectively, below and above the critical field suppressing the magnetic order. This excludes antiferromagnetic magnons as the origin of this additional contribution to thermal conductivity. Moreover, this low temperature contribution prevails a definite conclusion on the validity or violation of the Wiedemann-Franz law at the field-induced quantum critical point.
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Affiliation(s)
- M Taupin
- Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France and CEA, INAC-SPSMS, F-38000 Grenoble, France
| | - G Knebel
- Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France and CEA, INAC-SPSMS, F-38000 Grenoble, France
| | - T D Matsuda
- Advanced Science Research Center, JAEA, Tokai, Ibaraki 319-1195, Japan
- Department of Physics, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
| | - G Lapertot
- Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France and CEA, INAC-SPSMS, F-38000 Grenoble, France
| | - Y Machida
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
| | - K Izawa
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
| | - J-P Brison
- Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France and CEA, INAC-SPSMS, F-38000 Grenoble, France
| | - J Flouquet
- Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France and CEA, INAC-SPSMS, F-38000 Grenoble, France
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22
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Usuda K, Sagawa M, Motono N, Ueno M, Tanaka M, Machida Y, Maeda S, Matoba M, Tonami H, Ueda Y. Advantages of Diffusion Weighted Imaging of Pulmonary Nodules and Masses: Comparison with Positron Emission Tomography. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv046.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Uchida J, Iwai T, Kabei K, Machida Y, Kuwabara N, Naganuma T, Kumada N, Nakatani T. Effects of Conversion From a Twice-Daily Tacrolimus to a Once-Daily Tacrolimus on Glucose Metabolism in Stable Kidney Transplant Recipients. Transplant Proc 2014; 46:532-6. [DOI: 10.1016/j.transproceed.2013.11.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/07/2013] [Accepted: 11/27/2013] [Indexed: 12/21/2022]
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24
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Uchida J, Iwai T, Machida Y, Kuwabara N, Kabei K, Kumada N, Nakatani T. Insulin resistance and insulin secretion in renal transplant recipients with hepatitis C. Transplant Proc 2013; 45:1540-3. [PMID: 23726615 DOI: 10.1016/j.transproceed.2013.01.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/03/2013] [Indexed: 01/07/2023]
Abstract
BACKGROUND Several reports have suggested an association between hepatitis C virus (HCV) infection and new-onset diabetes after transplantation (NODAT). NODAT is a common complication after renal transplantation, and it has been associated with increased long-term morbidity and mortality. HCV-positive recipients may have abnormal glucose metabolism, even though NODAT has never been previously diagnosed. The aim of this study was to analyze the pathogenic factors responsible for glucose metabolism in a series of HCV-positive renal transplant recipients. METHODS The study population comprised 16 renal transplant patients who received their grafts from deceased or living donors with anti-HCV antibodies. HCV-negative transplant recipients were individually matched with these HCV-positive recipients by year of transplantation, sex, age, serum creatinine levels, and type of calcineurin inhibitors. None of the patients had been diagnosed with diabetes. Insulin secretion and insulin resistance were determined by a 75-g oral glucose tolerance test (OGTT) and compared between the 2 groups. Categories of glucose tolerance were defined according to World Health Organization criteria. RESULTS Glucose intolerance (impaired fasting glucose, impaired glucose tolerance, diabetes mellitus) as assessed by OGTT was detected in 7 of the HCV-positive recipients (43.8%) and 3 of the HCV-negative recipients. The homeostasis model assessment of insulin resistance was greater in the HCV-positive recipients than in the HCV-negative recipients. The homeostasis model assessment of β-cell function was higher in the HCV-positive recipients than in the HCV-negative recipients. CONCLUSIONS The frequency of glucose intolerance tended to be higher in HCV-positive recipients. Furthermore, insulin resistance was greater and insulin secretion higher in HCV-positive recipients, which indicated that the increase in insulin secretion compensated for insulin resistance observed in these patients. However, HCV-positive renal transplant recipients may ultimately develop NODAT as this compensation diminishes with time.
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Affiliation(s)
- J Uchida
- Department of Urology, Osaka City University Graduate School of Medicine, Osaka, Japan.
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25
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Machida Y, Tomokuni K, Izawa K, Lapertot G, Knebel G, Brison JP, Flouquet J. Verification of the Wiedemann-Franz law in YbRh2Si2 at a quantum critical point. Phys Rev Lett 2013; 110:236402. [PMID: 25167518 DOI: 10.1103/physrevlett.110.236402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 02/04/2013] [Indexed: 06/03/2023]
Abstract
The thermal conductivity measurements are performed on the heavy-fermion compound YbRh(2)Si(2) down to 0.04 K and under magnetic fields through a quantum critical point (QCP) at B(c)=0.66 T∥c axis. In the limit as T→0, we find that the Wiedemann-Franz law is satisfied within experimental error at the QCP despite the destruction of the standard signature of Fermi liquid. Our results place strong constraints on models that attempt to describe the nature of the unconventional quantum criticality of YbRh(2)Si(2).
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Affiliation(s)
- Y Machida
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
| | - K Tomokuni
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
| | - K Izawa
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
| | - G Lapertot
- SPSMS, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - G Knebel
- SPSMS, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - J-P Brison
- SPSMS, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - J Flouquet
- SPSMS, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble, F-38054, France
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26
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Machida Y, Kubota K, Katayama T, Toriihara A, Shibuya H. Diagnostic performance of fluorodeoxyglucose-positron emission tomography/computed tomography combined with ultrasonography-guided fine needle aspiration cytology for identifying axillary lymph node status in patients with breast cancer. Eur J Surg Oncol 2013; 39:26-30. [DOI: 10.1016/j.ejso.2012.10.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 08/30/2012] [Accepted: 10/12/2012] [Indexed: 02/05/2023] Open
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27
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Machida Y, Uchida J, Kuwabara N, Kabei K, Koyama Y, Tachibana H, Naganuma T, Iwai T, Kumada N, Nakatani T. Once Daily Prolonged-Release Tacrolimus in de Novo Renal Transplantation: A Single-Center Experience. Transplantation 2012. [DOI: 10.1097/00007890-201211271-01976] [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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28
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Uchida J, Machida Y, Iwai T, Kuwabara N, Kabei K, Kumada N, Nakatani T. Glucose Intolerance Is Associated with Increased Intimal Medial Thickness of the Carotid Artery and Increased Pulse Wave Velocity in Renal Transplant Recipients. Transplantation 2012. [DOI: 10.1097/00007890-201211271-01618] [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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29
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Uchida J, Machida Y, Iwai T, Kuwabara N, Kabei K, Kumada N, Nakatani T. Glucose Intolerance Is Associated with Increased Intimal Medial Thickness of the Carotid Artery and Increased Pulse Wave Velocity in Renal Transplant Recipients. Transplantation 2012. [DOI: 10.1097/00007890-201211271-00583] [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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30
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Machida Y, Tomokuni K, Ogura C, Izawa K, Kuga K, Nakatsuji S, Lapertot G, Knebel G, Brison JP, Flouquet J. Thermoelectric response near a quantum critical point of β-YbAlB4 and YbRh2Si2: a comparative study. Phys Rev Lett 2012; 109:156405. [PMID: 23102346 DOI: 10.1103/physrevlett.109.156405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 07/25/2012] [Indexed: 06/01/2023]
Abstract
The thermoelectric coefficients have been measured down to a very low temperature for the Yb-based heavy-fermion compounds β-YbAlB4 and YbRh2Si2, often considered as model systems for the local quantum criticality case. We observe a striking difference in the behavior of the Seebeck coefficient S in the vicinity of their respective quantum critical point (QCP). Approaching the critical field, S/T is enhanced in β-YbAlB4, but drastically reduced in YbRh2Si2. The ratio of thermopower to specific heat remains constant for β-YbAlB4, but it is significantly reduced near the QCP in YbRh2Si2. In both systems, on the other hand, the Nernst coefficient shows a diverging behavior near the QCP. The interplay between valence and magnetic quantum criticality and the additional possibility of a Lifshitz transition crossing the critical field under magnetic field are discussed as the origin of the different behaviors of these compounds.
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Affiliation(s)
- Y Machida
- Department of Physics, Tokyo Institute of Technology, Meguro, Japan
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31
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Machida Y, Itoh A, So Y, Izawa K, Haga Y, Yamamoto E, Kimura N, Onuki Y, Tsutsumi Y, Machida K. Twofold spontaneous symmetry breaking in the heavy-fermion superconductor UPt3. Phys Rev Lett 2012; 108:157002. [PMID: 22587277 DOI: 10.1103/physrevlett.108.157002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Indexed: 05/31/2023]
Abstract
The field-orientation dependent thermal conductivity of the heavy-fermion superconductor UPt3 was measured down to very low temperatures and under magnetic fields throughout the distinct superconducting phases: B and C phases. In the C phase, a striking twofold oscillation of the thermal conductivity within the basal plane is resolved reflecting the superconducting gap structure with a line of node along the a axis. Moreover, we find an abrupt vanishing of the oscillation across a transition to the B phase, as a clear indication of a change of gap symmetries. We also identify extra two line nodes below and above the equator in both B and C phases. From these results together with the symmetry consideration, the gap function of UPt3 is determined as a E(1u) representation characterized by a combination of two line nodes at the tropics and point nodes at the poles.
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Affiliation(s)
- Y Machida
- Department of Physics, Tokyo Institute of Technology, Meguro 152-8551, Japan
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32
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Sakai N, Zhu L, Kurokawa A, Takeuchi H, Yano S, Yanoh T, Wada N, Taira S, Hosokai Y, Usui A, Machida Y, Saito H, Ichiyanagi Y. Synthesis of Gd2O3nanoparticles for MRI contrast agents. ACTA ACUST UNITED AC 2012. [DOI: 10.1088/1742-6596/352/1/012008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Tokumura T, Nagaoka M, Machida Y. Effect of doses and dosage forms on the bioavailability of amoxicillin in non-fasted rats. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50098-5] [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: 11/26/2022]
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34
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Uchida J, Kuwabara N, Machida Y, Iwai T, Naganuma T, Kumada N, Nakatani T. Conversion of Stable Kidney Transplant Recipients From a Twice-Daily Prograf to a Once-Daily Tacrolimus Formulation: A Short-Term Study on its Effects on Glucose Metabolism. Transplant Proc 2012; 44:128-33. [DOI: 10.1016/j.transproceed.2011.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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35
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Balicas L, Nakatsuji S, Machida Y, Onoda S. Anisotropic hysteretic Hall effect and magnetic control of chiral domains in the chiral spin states of Pr2Ir2O7. Phys Rev Lett 2011; 106:217204. [PMID: 21699337 DOI: 10.1103/physrevlett.106.217204] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Indexed: 05/31/2023]
Abstract
We uncover a strong anisotropy in both the anomalous Hall effect (AHE) and the magnetoresistance of the chiral spin states of Pr(2)Ir(2)O(7). The AHE appearing below 1.5 K at a zero magnetic field shows hysteresis which is most pronounced for fields cycled along the [111] direction. This hysteresis is compatible with the field-induced growth of domains composed by the 3-in 1-out spin states which remain coexisting with the 2-in 2-out spin ice manifold once the field is removed. Only for fields applied along the [111] direction, we observe a large positive magnetoresistance and Shubnikov-de Haas oscillations above a metamagnetic critical field. These observations suggest the reconstruction of the electronic structure of the conduction electrons by the field-induced spin texture.
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Affiliation(s)
- L Balicas
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
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36
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Machida Y, Sakai S, Izawa K, Okuyama H, Watanabe T. Enhanced quasiparticle heat conduction in the multigap superconductor Lu2Fe3Si5 . Phys Rev Lett 2011; 106:107002. [PMID: 21469825 DOI: 10.1103/physrevlett.106.107002] [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: 09/13/2010] [Indexed: 05/30/2023]
Abstract
Thermal transport measurements have been made on the Fe-based superconductor Lu2Fe3Si5 (T(c) ∼ 6 K) down to a very low temperature T(c)/120. The field and temperature dependences of the thermal conductivity confirm the multigap superconductivity with fully opened gaps on the whole Fermi surfaces. In comparison to MgB2, Lu2Fe3Si5 reveals a remarkably enhanced quasiparticle heat conduction in the mixed state. The results can be interpreted as a consequence of the unequal weight of the Fe 3d-electron character among the distinct bands.
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Affiliation(s)
- Y Machida
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
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37
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Uchida J, Machida Y, Iwai T, Naganuma T, Kitamoto K, Iguchi T, Maeda S, Kamada Y, Kuwabara N, Kim T, Nakatani T. Desensitization Protocol in Highly HLA-Sensitized and ABO-Incompatible High Titer Kidney Transplantation. Transplant Proc 2010; 42:3998-4002. [DOI: 10.1016/j.transproceed.2010.09.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 09/09/2010] [Indexed: 10/18/2022]
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38
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Ogita Y, Takahashi Y, Iwata M, Sasatsu M, Onishi H, Hashimoto S, Machida Y. Comparison of physical properties and drug-releasing characteristics of white petrolatums. Pharmazie 2010; 65:801-804. [PMID: 21155385] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
White petrolatums of Japanese Pharmacopoeia grade and Sun white marketed as a cosmetic were characterized by measuring their physical properties and drug-releasing characteristics. White petrolatums of Japanese Pharmacopoeia grade available commercially in Japan were Perfecta, White 1S, Ultima, Snow, Snow V and Regent (Propeto). Penetrating stress, shear stress and spreading properties were measured as physical properties of the white petrolatums. The physical properties of white petrolatums varied, and Regent was the softest and the most spreadable ointment base. In vitro release test was performed using flow-through Franz diffusion cells. Fluorescein isothiocyanate and tetracycline hydrochloride were used as drug models. Their release characteristics varied among the tested white petrolatums, and Regent had the best release properties. Among the white petrolatums, with the exception of Regent, the release properties should depend on the distribution of drugs between white petrolatum and the receiver solution. Considerations of usability and characteristics of theprincipal agent are needed when choosing white petrolatums.
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Affiliation(s)
- Y Ogita
- Department of Pharmacy, Yokohama City University Medical Center, Yokohama, Japan
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39
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Uchida J, Machida Y, Iwai T, Naganuma T, Kitamoto K, Iguchi T, Maeda S, Kamada Y, Kumada N, Kuwabara N, Kim T, Nakatani T. DESENSITIZATION PROTOCOL IN HIGHLY HLA-SENSITIZED AND ABO-INCOMPATIBLE HIGH TITER KIDNEY TRANSPLANTATION. Transplantation 2010. [DOI: 10.1097/00007890-201007272-01249] [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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40
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Usami S, Okamoto S, Takebe I, Machida Y. Factor inducing Agrobacterium tumefaciens vir gene expression is present in monocotyledonous plants. Proc Natl Acad Sci U S A 2010; 85:3748-52. [PMID: 16593930 PMCID: PMC280295 DOI: 10.1073/pnas.85.11.3748] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Agrobacterium tumefaciens harboring the tumor-inducing Ti plasmid incites crown gall tumor on dicotyledonous species. Upon infection of these plants, Ti plasmid DNA sequence is stably transferred (T-DNA) by unknown mechanisms to plant cells to be integrated into nuclear DNA. The T-DNA processing and transfer require the expression of vir (virulence) genes on the Ti plasmid, which are known to be induced by certain phenolic compounds released from cells at the wounded inoculation site. The results of the present study demonstrate that wheat and oats contain a substance(s) that induces vir gene expression, yet the inducing substance of wheat differs from the phenolic inducers in that it is hydrophilic and has a molecular weight of several thousand. The novel inducer was not detectable in the exudates of seedlings of these plants but was found in an extract from the transition region between shoot and root of the seedlings and also in extracts from the seeds, bran, and germ. This finding suggests that T-DNA processing and possibly its transfer should take place when Agrobacterium invades suitable tissues of monocotyledonous plants.
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Affiliation(s)
- S Usami
- Department of Biology, Faculty of Science, Nagoya University Chikusa-ku, Nagoya 464, Japan
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Tanaka M, Ueno M, Machida Y, Aikawa H, Usuda K, Sagawa M, Sakuma T. [Descending necrotizing mediastinitis]. Kyobu Geka 2009; 62:1073-1077. [PMID: 19894574] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We treated of 3 patients with descending necrotizing mediastinitis that is often to be fatal. There are 3 important issues regarding the treatment of this disease. First, the precise sites of abscess should be determined by computed tomography (CT) scans from the neck to diaphragm. Second, effective drainage of the neck and mediastinal abscess should be carried out immediately when the sites of abscess are determined. Third, drainage under video-assisted thoracic surgery (VATS) is an appropriate treatment because VATS is less invasive and provides an easier placement of the drainage tubes at abscess sites.
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Affiliation(s)
- M Tanaka
- Department of Thoracic Surgery, Kanazawa Medical University, Ishikawa, Japan
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42
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Usuda K, Sagawa M, Aikawa H, Ueno M, Tanaka M, Machida Y, Tsuchihara K, Masaki Y, Kinoshita E, Sakuma T. [Complete resection of an advanced mediastinal nonseminomatous germ cell tumor with multiple distant metastases after down-staging by chemotherapy]. Kyobu Geka 2009; 62:545-551. [PMID: 19588824] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A mediastinal nonseminomatous germ cell tumor was completely resected after down-staging by chemotherapy despite the presence of multiple distant metastases. A 22-year-old female was admitted for superior vena cava (SVC) syndrome. Her SVC was obstructed by a large anterior mediastinal tumor; she also exhibited distant metastases on a left rib, in the liver, and multiple in the lung. The blood alpha-fetoprotein (AFP) level was extremely elevated to 57,530 ng/ml. Four courses of BEP therapy [cisplatin (CDDP), bleomycin (BLM), etoposide (VP-16)] and a high dose chemotherapy followed by a peripheral blood stem cell transplantation made the tumor become smaller and effected its down-staging. Residual mediastinal tumor with an intravascular tumor in SVC was completely resected. The SVC was reconstructed by an artificial vessel graft. A mediastinal nonseminomatous germ cell tumor, even though it has multiple distant metastases, can achieve down-staging and complete resection by a chemotherapy based on scientific evidence.
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Affiliation(s)
- K Usuda
- Department of Thoracic Surgery, Kanazawa Medical University, Ishikawa, Japan
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43
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Kuga K, Karaki Y, Matsumoto Y, Machida Y, Nakatsuji S. Superconducting properties of the non-Fermi-liquid system beta-YbAlB4. Phys Rev Lett 2008; 101:137004. [PMID: 18851485 DOI: 10.1103/physrevlett.101.137004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Indexed: 05/26/2023]
Abstract
beta-YbAlB4 is the first Yb-based heavy fermion superconductor with Tc = 80 mK. Our study using high-purity single crystals reveals that strongly type-II heavy fermion superconductivity emerges from the non-Fermi-liquid state with enhanced ferromagnetic fluctuations. High sensitivity of Tc to sample purity indicates strong pair-breaking effects due to impurities, probably of nonmagnetic type, suggesting an unconventional character of the superconductivity.
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Affiliation(s)
- K Kuga
- Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa 277-8581, Japan
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44
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Uchida J, Iwai T, Kato M, Machida Y, Naganuma T, Kumada N, Yoshimura R, Kawashima H, Kim T, Nakatani T. A Novel Approach to Successful ABO-Incompatible High-Titer Renal Transplantation. Transplant Proc 2008; 40:2285-8. [DOI: 10.1016/j.transproceed.2008.06.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Kobayashi N, Ohno T, Yoshida K, Fukushima H, Mamada Y, Nomura M, Hirata H, Machida Y, Shinoda M, Suzuki N, Matsuoka H. Cardioprotective mechanism of telmisartan via PPAR-gamma-eNOS pathway in dahl salt-sensitive hypertensive rats. Am J Hypertens 2008; 21:576-81. [PMID: 18437150 DOI: 10.1038/ajh.2008.27] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Recently, some investigators have shown that telmisartan, an angiotensin II (Ang II)-receptor blocker (ARB), is a partial agonist of the peroxisome proliferator-activated receptor-gamma (PPAR-gamma). We investigate whether telmisartan improves cardiovascular remodeling associated with the production of endothelial nitric oxide synthase (eNOS) through PPAR-gamma, inhibits the Rho-kinase pathway, and suppresses oxidative stress in Dahl salt-sensitive (DS) hypertensive rats. METHODS Telmisartan (1 mg/kg per day) or telmisartan plus PPAR-gamma inhibitor, GW9662 (1 mg/kg per day) was administered from the age of 6-11 weeks. Age-matched male Dahl salt-resistant (DR) rats served as a control group. RESULTS The levels of eNOS and PPAR-gamma expression, and eNOS phosphorylation were significantly lower in DS rats than in DR rats. Chronic telmisartan treatment in DS rats significantly increased these parameters, but not telmisartan plus GW9662. Telmisartan effectively inhibited the vascular lesion formation such as medial thickness and perivascular fibrosis, but not telmisartan plus GW9662. Moreover, upregulated RhoA protein, Rho-kinase mRNA, and myosin light-chain phosphorylation in DS rats was decreased by telmisartan to a similar degree as observed after treatment with Y-27632, a selective Rho-kinase inhibitor. In addition, NAD(P)H oxidase p22phox, p47phox, gp91phox expression, and mitogen-activated protein kinase and its downstream effector p70 S6 kinase phosphorylation in DS rats was also inhibited by telmisartan. CONCLUSIONS These results suggest that the cardioprotective mechanism of telmisartan may be partly due to improvement of endothelial function associated with PPAR-gamma-eNOS, oxidative stress, and Rho-kinase pathway.
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Sagawa M, Usuda K, Tsuchihara K, Aikawa H, Machida Y, Tanaka M, Ueno M, Nakagawa K, Sakuma T. [Comparison of the images in virtual bronchoscopy under different conditions]. Kyobu Geka 2008; 61:102-108. [PMID: 18268944] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVE We report herein the comparison of the virtual bronchoscopy (VB) images which were constructed with 2 different computed tomography (CT) scanners combined with 3 different applications in 2 healthy adult volunteers. METHODS CT scanners were multi-detector row CT (MDCT) [64 detectors] and MDCT (16 detectors). Applications, by which VB images were made, were Leonardo (Leo), Ziostation (Zio), and Plus XNVZ2 (Plus). The image quality was evaluated by 3 expert bronchoscopists. RESULTS The change of the threshold value was necessary in Leo for practical use in subsegmental bronchi and more distal area, but unnecessary in Plus or Zio. When Plus was used, the VB images from the data obtained with MDCT (16 detectors) and MDCT (64 detectors) had almost equal quality. CONCLUSIONS Although the process to construct VB images was different in each application, it was regarded that Plus was not inferior to Zio or Leo in VB image quality.
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Affiliation(s)
- Motoyasu Sagawa
- Department of Thoracic Surgery, Kanazawa Medical University, Ishikawa, Japan
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47
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Aikawa H, Sagawa M, Usuda K, Ueno M, Tanaka M, Machida Y, Sakuma T. [Multidisciplinary treatment of lung cancer in 21st century]. Kyobu Geka 2008; 61:51-54. [PMID: 18186274] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lung cancer is the leading cause of cancer deaths in Japan. Recently, big progress in the treatment of lung cancer has been achieved, such as new anti-cancer drugs, molecular targeted therapy, stereotactic radiotherapy, etc. Multidisciplinary approach has been required to the therapy for lung cancer patients. In this paper, we introduce The 21st Century Multidisciplinary Center in Kanazawa Medical University, and the Hokuriku Training Program for Making Specialists in Cancer Treatment.
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Affiliation(s)
- Hirokazu Aikawa
- Department of Thoracic Surgery, Kanazawa Medical University, Kanazawa, Japan
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Takahashi Y, Takeda C, Seto I, Kawano G, Machida Y. Formulation and evaluation of lactoferrin bioadhesive tablets. Int J Pharm 2007; 343:220-7. [PMID: 17600641 DOI: 10.1016/j.ijpharm.2007.05.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Revised: 04/09/2007] [Accepted: 05/17/2007] [Indexed: 11/19/2022]
Abstract
For the treatment of chronic inflammation in the oral cavity, we attempted to develop bioadhesive tablets of bovine lactoferrin (B-LF) which has antibacterial properties and immune regulatory functions. B-LF tablets containing pectin, tamarind gum or carboxymethylcellulose (CMC) were prepared by direct compression. Tablets consisting of B-LF, pectin and xylitol passed through 60- or 100-mesh sieves were also prepared. The tablets containing CMC had insufficient bioadhesive force. Although the tablets containing tamarind gum showed the longest residence time in the oral cavity, an unpleasant taste gradually developed. The tablets containing pectin showed the highest value of bioadhesive force and the taste was acceptable. The characteristics of the B-LF tablets were improved by adding an appropriate amount of xylitol and using the ingredients sieved by a 100-mesh sieve. The therapeutic effect was evaluated by using rats with an ulcer on the oral mucosa. In the present study, swelling on the periphery of the ulcer was observed after administration of the B-LF tablets, and then the ulcer has reduced overall.
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Affiliation(s)
- Y Takahashi
- Department of Drug Delivery Research, Hoshi University, 2-4-41 Ebara, Tokyo 142-8501, Japan.
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49
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Machida Y, Nakatsuji S, Maeno Y, Tayama T, Sakakibara T, Onoda S. Unconventional anomalous Hall effect enhanced by a noncoplanar spin texture in the frustrated Kondo lattice Pr2Ir2O7. Phys Rev Lett 2007; 98:057203. [PMID: 17358893 DOI: 10.1103/physrevlett.98.057203] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Indexed: 05/14/2023]
Abstract
We have investigated the Hall effect in the geometrically frustrated Kondo lattice Pr2Ir2O7. In its spin-liquid-like paramagnetic regime, the Hall resistivity rho(xy) is found to increase logarithmically on cooling. Moreover, in this low temperature region, the field dependence of the Hall conductivity sigma(xy) shows a large enhancement up to 30 Omega(-1) cm(-1) as well as a nonmonotonic change with the magnetization. Our results are far different from the anomalous Hall effect due to the spin-orbit coupling observed in ordinary magnetic conductors. We discuss the possible spin-chirality effect in the Ir 5d conduction band due to the noncoplanar texture of Pr<111> Ising-like moments.
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Affiliation(s)
- Y Machida
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
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50
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Hattori N, Machida Y, Sato S, Noda K, Iijima-Kitami M, Kubo S, Mizuno Y. Molecular mechanisms of nigral neurodegeneration in Park2 and regulation of parkin protein by other proteins. J Neural Transm Suppl 2006:205-8. [PMID: 17017530 DOI: 10.1007/978-3-211-45295-0_31] [Citation(s) in RCA: 5] [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] [Indexed: 02/23/2023]
Abstract
Most of the patients with Parkinson's disease (PD) are sporadic. However, Since identification of monogenic forms of PD, the contribution of genetic factors to the pathogenesis of sporadic PD is proposed as one of major risk factors. Indeed, this is supported by the demonstration of the high concordance in twins, increased risk among relatives of PD patients in case control and family studies. Thus, the functional analysis for the gene products for familial PD provides us a good hint to elucidate the pathogenesis of nigral degeneration. For example, although alpha-synuclein is involved in a rare dominant form of familial PD with dopa responsive parkinsonian features, this molecule is a major component of and Lewy bodies (LBs). In contrast, Park2 (parkin-related disease) is the most frequent form among patients with young-onset PD. However, Park2 brains generally lack the formation of LBs. In the other word, parkin responsible for Park2 is essential for the formation of LBs. Thus, both alpha-synuclein and parkin are speculated to share a common pathway. Here, we reviewed the parkin function and molecular mechanisms of Park2.
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Affiliation(s)
- N Hattori
- Department of Neurology, Juntendo University School of Medicine, Bunkyo, Tokyo, Japan.
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