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Edahiro Y, Ochiai T, Hashimoto Y, Ichii M, Okatani T, Omura H, Nakajima K, Sasaki M, Ando J, Takaku T, Koike M, Izumiyama K, Hiraga J, Yano T, Usuki K, Ohtsuka E, Yokoyama K, Oyake T, Takahashi N, Nishida T, Nakao T, Fukuda Y, Akasaka T, Mugitani A, Ando M, Komatsu N. Real-world status of treatment for lymphoid neoplasms developed during the course of myeloproliferative neoplasms in Japan. Hematology 2024; 29:2340149. [PMID: 38626148 DOI: 10.1080/16078454.2024.2340149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 04/02/2024] [Indexed: 04/18/2024] Open
Abstract
OBJECTIVES Patients with myeloproliferative neoplasms (MPNs) are at higher risk of developing secondary malignancies. In this study, we focused on patients with MPNs that complicated lymphoid neoplasms. To analyze the real-world status of lymphoid neoplasm treatment in patients with pre-existing MPNs in Japan, we conducted a multicenter retrospective study. METHODS Questionnaires were sent to collect the data on patients who were first diagnosed with either polycythemia vera, essential thrombocythemia or myelofibrosis and who later were complicated with lymphoid neoplasms defined as malignant lymphoma, multiple myeloma, or chronic lymphocytic leukemia/small cell lymphoma. RESULTS Twenty-four patients with MPNs complicated by lymphoid neoplasms were enrolled (polycythemia vera, n = 8; essential thrombocythemia, n = 14; and primary myelofibrosis, n = 2). Among these, diffuse large B-cell lymphoma (DLBCL) was the most frequently observed (n = 13, 54.1%). Twelve (92.3%) of the patients with DLBCL received conventional chemotherapy. Among these 12 patients, regarding cytoreductive therapy for MPNs, 8 patients stopped treatment, one continued treatment, and two received a reduced dose. Consequently, most patients were able to receive conventional chemotherapy for DLBCL with a slightly higher dose of granulocyte colony-stimulating factor support than usual without worse outcomes. All 3 patients with multiple myeloma received a standard dose of chemotherapy. CONCLUSION Our data indicate that if aggressive lymphoid neoplasms develop during the course of treatment in patients with MPNs, it is acceptable to prioritize chemotherapy for lymphoma.
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Affiliation(s)
- Yoko Edahiro
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomonori Ochiai
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoshinori Hashimoto
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Hematology, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Michiko Ichii
- Department of Hematology and Oncology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takeshi Okatani
- Division of Hematology, Hiroshima Red Cross Hospital and Atomic-bomb Survivors Hospital, Hiroshima, Japan
| | - Hiromi Omura
- Department of Hematology, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Kei Nakajima
- Department of Hematology/Oncology, University of Yamanashi, Yamanashi, Japan
| | - Makoto Sasaki
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Jun Ando
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- Division of Cell Therapy & Blood Transfusion Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Tomoiku Takaku
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Michiaki Koike
- Department of Hematology, Juntendo University Shizuoka Hospital, Shizuoka, Japan
| | - Koh Izumiyama
- Blood Disorders Center, Aiiku Hospital, Hokkaido, Japan
| | - Junji Hiraga
- Department of Hematology, Toyota Kosei Hospital, Aichi, Japan
| | - Tomofumi Yano
- Internal Medicine Department, Okayama Rosai Hospital, Okayama, Japan
| | - Kensuke Usuki
- Department of Hematology, NTT Medical Center Tokyo, Tokyo, Japan
| | - Eiichi Ohtsuka
- Department of Hematology, Oita Prefectural Hospital, Oita, Japan
| | - Kenji Yokoyama
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Tatsuo Oyake
- Division of Hematology and Oncology, Department of Internal Medicine, Iwate Medical University School of Medicine, Iwate, Japan
| | - Naoki Takahashi
- Department of Hematopoietic Tumor, International Medical Center, Saitama Medical University, Saitama, Japan
| | - Tetsuya Nishida
- Department of Hematology, Japanese Red Cross Aichi Medical Center Nagoya Daiichi Hospital, Aichi, Japan
| | - Takafumi Nakao
- Department of Hematology, Osaka City General Hospital, Osaka, Japan
| | - Yasutaka Fukuda
- Department of Hematology, Juntendo University Nerima Hospital, Tokyo, Japan
| | | | - Atsuko Mugitani
- Department of Hematology, Seichokai Fuchu Hospital, Osaka, Japan
| | - Miki Ando
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- PharmaEssentia Japan KK, Tokyo, Japan
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Yokoyama K, Yoshizaki T, Nagaoka E, Tasaki D, Arai H. Preoperative Computed Tomography of the Right Gastroepiploic Artery for Coronary Artery Bypass Grafting. Circ J 2023; 87:1635-1642. [PMID: 37197976 DOI: 10.1253/circj.cj-22-0764] [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] [Indexed: 05/19/2023]
Abstract
BACKGROUND Grafting the right gastroepiploic artery (GEA) to the right coronary artery (RCA) is effective, but preoperative evaluation of arterial conduit availability has not been established. By comparing the midterm graft results, we aimed to assess the efficacy of preoperative evaluation of the GEA using computed tomography (CT).Methods and Results: We retrospectively examined patients who underwent isolated coronary artery bypass grafting surgery between April 2010 and December 2020, and those whose GEA was grafted to the RCA were selected: 55 patients were included in the study analysis. Postoperative evaluations were performed during the early phase, 1 year postoperatively, and at follow-up evaluations. The outer diameter of the proximal GEA was compared with the midterm graft patency grade on CT and patients were classified as Functional (Grade A) or Dysfunctional (Grades O or B). The proximal GEA outer diameters were significantly different between the Functional and Dysfunctional groups (P<0.001). Furthermore, multivariate Cox regression analysis revealed that this diameter was an independent predictor of graft functionality (P<0.001). Patients with outer proximal diameters larger than the cutoff value had superior graft results at 3 years postoperatively. The rate of freedom from a dysfunctional graft at 3 years postoperatively was 95.5% and 45.5% for the Larger and Smaller diameter subgroups, respectively (P<0.001). CONCLUSIONS Preoperative evaluation of the outer diameter of the proximal GEA, excluding calcified GEA, using CT is a minimally invasive and useful method, and may improve midterm results of in-situ GEA grafting, even in severe stenotic lesions.
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Affiliation(s)
- Kenji Yokoyama
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital
| | - Tomoya Yoshizaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital
| | - Eiki Nagaoka
- Department of Cardiovascular Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Dai Tasaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital
| | - Hirokuni Arai
- Department of Cardiovascular Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Nagase M, Sakamoto M, Amekura S, Akiba S, Kashiba M, Yokoyama K, Yamamoto Y, Fujisawa A. Riboflavin compounds show NAD(P)H dependent quinone oxidoreductase-like quinone reducing activity. J Clin Biochem Nutr 2023; 73:52-60. [PMID: 37534093 PMCID: PMC10390810 DOI: 10.3164/jcbn.22-140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/01/2023] [Indexed: 08/04/2023] Open
Abstract
NAD(P)H-dependent quinone oxidoreductase (NQO) is an essential enzyme in living organisms and cells protecting them from oxidative stress. NQO reduces coenzyme Q (CoQ) using NAD(P)H as an electron donor. In the present study, we searched for coenzyme Q10 reducing activity from fractions of gel filtration-fractionated rat liver homogenate. In addition to the large-molecular-weight fraction containing NQO, CoQ10 reducing activity was also detected in a low-molecular-weight fraction. Furthermore, dicumarol, a conventional inhibitor of NQO1 (DT diaphorase), did not inhibit the reduction but quercetin did, suggesting that the activity was not due to NQO1. After further purification, the NADH-dependent CoQ10-reducing compound was identified as riboflavin. Riboflavin is an active substituent of other flavin compounds such as FAD and FMN. These flavin compounds also reduced not only CoQ homologues but also vitamin K homologues in the presence of NADH. The mechanism was speculated to work as follows: NADH reduces flavin compounds to the corresponding reduced forms, and subsequently, the reduced flavin compounds immediately reduce bio-quinones. Furthermore, the flavin-NADH system reduces CoQ10 bound with saposin B, which is believed to function as a CoQ transfer protein in vivo. This flavin-dependent CoQ10 reduction, therefore, may function in aqueous phases such as the cell cytosol and bodily fluids.
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Affiliation(s)
- Midori Nagase
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Miku Sakamoto
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Sakiko Amekura
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Sayaka Akiba
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Misato Kashiba
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Kenji Yokoyama
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Yorihiro Yamamoto
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
| | - Akio Fujisawa
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-cho, Hachioji, Tokyo 192-0982, Japan
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Fernández-Duque D, Shafer P, Towsner H, Yokoyama K. Metric fixed point theory and partial impredicativity. Philos Trans A Math Phys Eng Sci 2023; 381:20220012. [PMID: 37031705 DOI: 10.1098/rsta.2022.0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 02/09/2023] [Indexed: 06/19/2023]
Abstract
We show that the Priess-Crampe & Ribenboim fixed point theorem is provable in [Formula: see text]. Furthermore, we show that Caristi's fixed point theorem for both Baire and Borel functions is equivalent to the transfinite leftmost path principle, which falls strictly between [Formula: see text] and [Formula: see text]. We also exhibit several weakenings of Caristi's theorem that are equivalent to [Formula: see text] and to [Formula: see text]. This article is part of the theme issue 'Modern perspectives in Proof Theory'.
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Affiliation(s)
- D Fernández-Duque
- Department of Mathematics WE16, Ghent University, Ghent, Belgium
- Institute of Computer Science of the Czech Academy of Sciences, Prague, Czech Republic
| | - P Shafer
- School of Mathematics, University of Leeds, Leeds, West Yorkshire, UK
| | - H Towsner
- Department of Mathematics, University of Pennsylvania, Philadelphia, PA, USA
| | - K Yokoyama
- Mathematical Institute, Tohoku University, Sendai, Miyagi, Japan
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Kuwana M, Ito T, Kowata S, Hatta Y, Fujimaki K, Naito K, Kurahashi S, Kagoo T, Tanimoto K, Saotome S, Tomiyama Y, Nakajima Y, Harada H, Hangaishi A, Yokoyama K, Cho R, Kyoda K, Kakinoki Y, Yoshida M, Shimizu S, Kashiwagi H, Kirito K, Yokota A, Kikuchi T, Harada N, Imamura Y, Yano T. Fostamatinib for the treatment of Japanese patients with primary immune thrombocytopenia: A phase 3, placebo-controlled, double-blind, parallel-group study. Br J Haematol 2023; 200:802-811. [PMID: 36470677 DOI: 10.1111/bjh.18582] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 11/17/2022] [Accepted: 11/20/2022] [Indexed: 12/12/2022]
Abstract
Fostamatinib, a spleen tyrosine kinase inhibitor, has been approved for the treatment of chronic primary immune thrombocytopenia (ITP) in the United States, Canada and some European countries. We conducted a phase 3, placebo-controlled, double-blind, parallel-group study to evaluate the efficacy and safety of fostamatinib in Japanese patients with primary ITP. Thirty-four patients were randomised to fostamatinib (n = 22) or placebo (n = 12) at 100-150 mg twice a day for 24 weeks. Stable responses (platelet ≥50 000/μl at ≥4 of the 6 visits from weeks 14 to 24) were observed in eight (36%) patients on fostamatinib and in none of the patients on placebo (p = 0.030). Overall responses (platelet ≥50 000/μl at ≥1 of the 6 visits from weeks 2 to 12) were seen in 10 (45%) patients on fostamatinib and in none of the patients on placebo (p = 0.006). Patients on fostamatinib required rescue medication less often and experienced fewer bleeding symptoms than patients on placebo. Adverse events observed were mild or moderate and were manageable. No new safety signals were identified in Japanese patients with ITP.
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Affiliation(s)
- Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
| | - Tomoki Ito
- First Department of Internal Medicine, Kansai Medical University, Osaka, Japan
| | - Shugo Kowata
- Division of Hematology and Oncology, Department of Internal Medicine, Iwate Medical University, Iwate, Japan
| | - Yoshihiro Hatta
- Department of Hematology and Rheumatology, Nihon University School of Medicine, Tokyo, Japan
| | | | - Kensuke Naito
- Department of Hematology, Hamamatsu Medical Center, Shizuoka, Japan
| | - Shingo Kurahashi
- Department of Hematology and Oncology, Toyohashi Municipal Hospital, Aichi, Japan
| | - Toshiya Kagoo
- Division of Hematology, Department of Internal Medicine, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Kazuki Tanimoto
- Hematology and Oncology Division, Japanese Red Cross Fukuoka Hospital, Fukuoka, Japan
| | - So Saotome
- Kissei Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Yoshiaki Tomiyama
- Department of Blood Transfusion, Osaka University Hospital, Osaka, Japan
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Takamatsu H, Takezako N, Zheng J, Moorhead M, Carlton VEH, Kong KA, Murata R, Ito S, Miyamoto T, Yokoyama K, Matsue K, Sato T, Kurokawa T, Yagi H, Terasaki Y, Ohata K, Matsumoto M, Yoshida T, Faham M, Nakao S. Corrigendum to "Prognostic value of sequencing-based minimal residual disease detection in patients with multiple myeloma who underwent autologous stem-cell transplantation": [Annals of Oncology 28 (2017):2503-2510]. Ann Oncol 2023; 34:322. [PMID: 36075840 DOI: 10.1016/j.annonc.2022.08.004] [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: 11/30/2022] Open
Affiliation(s)
- H Takamatsu
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.
| | - N Takezako
- Department of Hematology, National Hospital Organization Disaster Medical Center of Japan, Tachikawa, Japan
| | - J Zheng
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - M Moorhead
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - V E H Carlton
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - K A Kong
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - R Murata
- Division of Internal Medicine, Keiju Kanazawa Hospital, Kanazawa, Japan
| | - S Ito
- Department of Medical Oncology, Iwate Medical University School of Medicine, Morioka, Japan
| | - T Miyamoto
- Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Yokoyama
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Hachioji, Japan
| | - K Matsue
- Division of Hematology/Oncology, Department of Medicine, Kameda Medical Center, Kamogawa, Japan
| | - T Sato
- Department of Medical Oncology and Hematology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - T Kurokawa
- Department of Hematology, Toyama Red Cross Hospital, Toyama, Japan
| | - H Yagi
- Department of Hematology, Kinki University School of Medicine Nara Hospital, Ikoma, Nara, Japan
| | - Y Terasaki
- Division of Internal Medicine, Toyama City Hospital, Toyama, Japan
| | - K Ohata
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - M Matsumoto
- Department of Hematology, National Hospital Organization Shibukawa Medical Center, Shibukawa, Japan
| | - T Yoshida
- Department of Hematology, Shizuoka City Shimizu Hospital, Shizuoka, Japan
| | - M Faham
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - S Nakao
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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Iwamoto O, Iwamoto N, Kunieda S, Minato F, Nakayama S, Abe Y, Tsubakihara K, Okumura S, Ishizuka C, Yoshida T, Chiba S, Otuka N, Sublet JC, Iwamoto H, Yamamoto K, Nagaya Y, Tada K, Konno C, Matsuda N, Yokoyama K, Taninaka H, Oizumi A, Fukushima M, Okita S, Chiba G, Sato S, Ohta M, Kwon S. Japanese evaluated nuclear data library version 5: JENDL-5. J NUCL SCI TECHNOL 2023. [DOI: 10.1080/00223131.2022.2141903] [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: 02/05/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Go Chiba
- Hokkaido University, Sapporo, Japan
| | - Satoshi Sato
- National Institutes for Quantum Science and Technology, Rokkasho-mura, Japan
| | - Masayuki Ohta
- National Institutes for Quantum Science and Technology, Rokkasho-mura, Japan
| | - Saerom Kwon
- National Institutes for Quantum Science and Technology, Rokkasho-mura, Japan
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Okahisa T, Matsuura T, Tomonari K, Komatsu K, Yokoyama K, Iwase J, Yamada M, Sairyo K. Between-day reliability and minimum detectable change of the Conventional Gait Model 2 and Plug-in Gait Model during running. Gait Posture 2023; 100:171-178. [PMID: 36563589 DOI: 10.1016/j.gaitpost.2022.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 02/27/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND The Plug-in Gait model (PiG) is commonly used in 3D motion analysis but has limited reliability. Although an improved version of PiG has been developed, called the Conventional Gait Model 2 (CGM2), there is limited evidence on its between-day reliability for running. RESEARCH QUESTION What is the between-day intraclass correlation coefficient (ICC3,k) and minimum detectable change (MDC) of lower limb kinematics and kinetics for CGM2 during running and does reliability differ between CGM2 and PiG. METHODS Twenty-three healthy participants performed running at a comfortable speed in two identical test sessions at least 5 days apart. Lower limb kinematic and kinetic data in the three planes of motion were calculated using CGM2 and PiG. The ICC and MDC were calculated for the kinematic and kinetic parameters at initial contact and peak during the stance phase of running. RESULTS CGM2 kinematics showed good-to-excellent reliability (ICC: 0.75-0.93), except for hip extension and ankle internal rotation, and less than 5° MDC (1.8°-4.9°) of the coronal and sagittal planes, except for hip extension. PiG showed poor-to-moderate reliability (ICC: -0.15 to 0.72) in the coronal and transverse planes and greater than 5° MDC (5.0°-21.8°), except for knee extension, adduction, and ankle dorsiflexion. CGM2 showed good-to-excellent reliability for peak kinetics (ICC: 0.75-0.97), except for hip internal rotation and knee extension. The ICC and MDC were higher for CGM2 than PiG, with significant differences in the coronal plane of the hip and knee joints and transverse plane of the hip joint in kinematics and in the sagittal and coronal plane of the hip and knee joints in kinetics. SIGNIFICANCE The between-day reliability of CGM2 was mostly good to excellent for lower limb kinematics and kinetics during running. We believe that CGM2 can more accurately assess kinematic differences between the coronal and transverse planes than the PiG.
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Affiliation(s)
- Tetsuya Okahisa
- Division of Rehabilitation, Tokushima University Hospital, Tokushima, Japan
| | - Tetsuya Matsuura
- Department of Rehabilitation, Tokushima University Hospital, Tokushima, Japan.
| | - Ken Tomonari
- Division of Rehabilitation, Tokushima University Hospital, Tokushima, Japan
| | - Kouji Komatsu
- Division of Rehabilitation, Tokushima University Hospital, Tokushima, Japan
| | - Kenji Yokoyama
- Department of Orthopedics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Joji Iwase
- Department of Orthopedics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Megumi Yamada
- Division of Rehabilitation, Tokushima University Hospital, Tokushima, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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Yokoyama K. Development of adjusted nuclear data library for fast reactor application. EPJ Web Conf 2023. [DOI: 10.1051/epjconf/202328100004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
In Japan, development of adjusted nuclear data library for fast rector application based on the cross-section adjustment method has been conducted since the early 1990s. The adjusted library is called the unified cross-section set, which is an ABBN-type group constant set with 70-group energy structure. The first version was developed in 1991 and is called ADJ91. After that, ADJ98, ADJ2000, ADJ2000R, and ADJ2010 were constantly developed. For instance, ADJ2010 was developed based on JENDL-4.0, which provides covariance data needed to apply the cross-section adjustment method, by using 488 integral experimental data acquired in typical fast reactor systems. ADJ2010 has been used as the standard cross-section set for nuclear design in the fast reactor cycle technology development project (FaCT) and the succeeding fast reactor projects. In parallel, the integral experimental data were further expanded to improve the design prediction accuracy of the core loaded with MA and/or degraded Pu. Using the additional integral experimental data, development of the next version of ADJ2017 was started in 2017. In 2022, the latest unified cross-section set AJD2017R was developed based on JENDL-4.0 by using 619 integral experimental data. An overview of the latest version with a review of previous ones will be shown.
On the other hand, the latest Japanese evaluated nuclear data library JENDL-5 was released at the end of 2021. In the development of JENDL-5, some of the integral experimental data used in ADJ2017R were explicitly utilized in the nuclear data evaluation. However, this is not reflected in the covariance data. This situation needs to be considered when developing a next version of the unified cross-section set based on JENDL-5. Preliminary adjustment calculation based on JENDL-5 is performed using C/E (calculation/experiment) values simply evaluated by a sensitivity analysis. The preliminary result of the JENDL-5-based adjustment will be also discussed.
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Tokashiki M, Ikehara T, Tada K, Egawa T, Yokoyama K, Iwamoto O. Application of the extended bias factor method for highly reliable benchmark suite. EPJ Web Conf 2023. [DOI: 10.1051/epjconf/202328100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
It was tried to get useful information feedback on cross section and covariance by application of extended bias factor method with experimental benchmarks’ C/E, sensitivity coefficient and covariance data. As a result, it was succeeded to distinguish “the case unrecommended by specialists” as outlier case. And it was succeeded to get the hints that there is room for improvement in cross section or covariance of some nuclides by investigating outlier cases judged as recommended case by specialists.
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11
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Urano T, Yasumoto A, Yokoyama K, Horiuchi H, Morishita E, Suzuki Y. COVID-19 and Thrombosis: Clinical Aspects. Curr Drug Targets 2022; 23:1567-1572. [PMID: 36200150 DOI: 10.2174/1389450123666221005092350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/30/2022] [Accepted: 09/09/2022] [Indexed: 01/25/2023]
Abstract
In coronavirus disease 2019 (COVID-19), thrombus formation is related to the pathogenesis of acute respiratory distress syndrome (ARDS) and the progression of clinical symptoms. Severe damage to vascular endothelial cells and the associated cytokine storm after SARS-CoV-2 infection cause thrombogenesis and contribute to the development of more severe and unique thromboses compared to other infectious diseases. Thromboses occur more often in critically ill patients. In addition to pulmonary thromboembolism (PE) and deep vein thrombosis, acute myocardial infarction, peripheral arterial thrombosis, and aortic thrombosis have also been reported. In PE, thrombi develop in both pulmonary arteries and alveolar capillaries. These, together with intraalveolar fibrin deposition, interfere with effective gaseous exchange in the lungs and exacerbate the clinical symptoms of ARDS in patients with COVID-19. Pharmacological thromboprophylaxis is recommended for all hospitalized patients to prevent both thrombosis and aggravation of ARDS, and other organ failures. Although the pediatric population is mostly asymptomatic or develops mild disease after SARS-CoV-2 infection, a new inflammatory disorder affecting the cardiovascular system, multisystem inflammatory syndrome in children (MIS-C), has been reported. Similar to Kawasaki disease, acute myocarditis, coronary vasculitis, and aneurysms are typically seen in MISC, although these two are now considered distinct entities. A similar acute myocarditis is also observed in young male adults, in which a hyperinflammatory state after SARS-CoV-2 infection seems to be involved. Several side effects following vaccination against COVID-19 have been reported, including vaccine-induced immune thrombotic thrombocytopenia and acute myocarditis. Although these could be serious and life-threatening, the cases are very rare, thus, the benefits of immunization still outweigh the risks.
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Affiliation(s)
- Tetsumei Urano
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Shizuoka Graduate University of Public Health, Shizuoka, Japan
| | - Atsushi Yasumoto
- Department of Hematology, Faculty of Medicine, Hokkaido University, Sappero, Japan
| | - Kenji Yokoyama
- Department of Hematology/Oncology, Tokai University, Tokyo, Japan
| | - Hisanori Horiuchi
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Eriko Morishita
- Department of Clinical Laboratory Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yuko Suzuki
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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12
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Jingliang M, Wang K, Murahari P, Yokoyama K, Lord JS, Pratt FL, He J, Schulz L, Willis M, Anthony JE, Morley NA, Nuccio L, Misquitta A, Dunstan DJ, Shimomura K, Watanabe I, Zhang S, Heathcote P, Drew AJ. Reply to: On the observation of photo-excitation effects in molecules using muon spin spectroscopy. Nat Mater 2022; 21:1110. [PMID: 33972763 DOI: 10.1038/s41563-021-01003-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Affiliation(s)
- M Jingliang
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - K Wang
- School of Physics and Astronomy, Queen Mary University of London, London, UK
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China
| | - P Murahari
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - K Yokoyama
- School of Physics and Astronomy, Queen Mary University of London, London, UK
- ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot, UK
| | - J S Lord
- ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot, UK
| | - F L Pratt
- ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot, UK
| | - J He
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China
| | - L Schulz
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China
| | - M Willis
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China
| | - J E Anthony
- Department of Chemistry, University of Kentucky, Lexington, KY, USA
| | - N A Morley
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK
| | - L Nuccio
- Department of Physics, University of Fribourg, Fribourg, Switzerland
| | - A Misquitta
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - D J Dunstan
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - K Shimomura
- Materials and Life Science Division, J-PARC Center, Tokai, Japan
| | | | - S Zhang
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China
| | - P Heathcote
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK.
| | - A J Drew
- School of Physics and Astronomy, Queen Mary University of London, London, UK.
- College of Physical Sciences and Technology, Sichuan University, Chengdu, People's Republic of China.
- ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot, UK.
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13
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Mikuni H, Watanabe G, Kumagai S, Yamamoto S, Sawada R, Yokoyama K, Honma Y, Sekine S, Kashihara T, Ishiyama K, Oguma J, Igaki H, Saruta M, Daiko H, Koyama S, Nishikawa H, Kato K. 1240P Activation status of CD8+ T and Treg cells in the tumor microenvironment potentially predicts the clinical efficacy of nivolumab in advanced esophageal squamous cell carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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14
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Hiraiwa S, Hashimoto N, Ueda T, Sugiyama T, Yokoyama K, Matsuyama T, Tajiri T, Nakamura N. Transformed Mycosis Fungoides with a Cytotoxic T-Cell Phenotype. Int J Surg Pathol 2022; 30:816-822. [DOI: 10.1177/10668969221084267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mycosis fungoides (MF) is a cutaneous T-cell lymphoma and occasionally undergo large cell transformation (transformed MF, TMF), resulting in a poorer clinical outcome. We describe a case of TMF with an immunophenotypic shift. MF showed the CD4 + CD8- T-cell phenotype, while TMF exhibited the CD4-CD8 + T-cell phenotype. Moreover, TMF expressed cytotoxic markers of TIA1 and Granzyme B. A PCR analysis of T-cell receptor genes revealed peak sizes that were the same in both biopsies, indicating that these two lymphomas were derived from the same clone.
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Affiliation(s)
- Shinichiro Hiraiwa
- Department of Pathology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Norisato Hashimoto
- Department of Hematology and Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Tomoki Ueda
- Department of Hematology and Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Tomoko Sugiyama
- Department of Pathology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Kenji Yokoyama
- Department of Hematology and Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Takashi Matsuyama
- Department of Dermatology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Takuma Tajiri
- Department of Pathology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
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15
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Tasaki D, Arai H, Yokoyama K, Yoshizaki T. Therapeutic-Dose Warfarin (International Normalized Ratio >1.6) Plus Aspirin Improved Long-Term Patency of Saphenous Vein Graft without Bleeding Complication. Ann Thorac Cardiovasc Surg 2022; 28:63-71. [PMID: 35034937 PMCID: PMC8915932 DOI: 10.5761/atcs.oa.21-00236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Purpose: Saphenous vein graft (SVG) is the most commonly used conduits in coronary artery bypass grafting (CABG), but the disadvantage of SVG is its tendency for progressive failure. We hypothesized that therapeutic-dose warfarin (international normalized ratio [INR] >1.6) plus aspirin improve SVG patency. This study aimed to evaluate the factors contributing to SVG patency. Methods: Since 2010–2020, 199 patients who underwent isolated CABG using SVG were divided into two groups according to their INR values in the first year: group T (INR >1.6) and group L (INR <1.6). Results: Group T had 162 SVGs (105 patients) and group L had 151 SVGs (94 patients). The 1-, 4-, and 7-year SVG patency rates were higher in group T than in group L (99%, 96%, and 92% vs. 93%, 86%, and 79%, respectively; p = 0.00378). The 1-, 4-, and 7-year freedom from repeat-revascularization was higher in group T than in group L (100%, 100%, and 99% vs. 98%, 95%, and 87%, respectively; p = 0.0264). Multivariate analysis showed that therapeutic-dose warfarin (p = 0.00204) and target vessel diameter (p <0.0001) were independent risk factors of SVG occlusion. Conclusion: Therapeutic-dose warfarin (INR >1.6) plus aspirin after CABG improved the long-term patency of SVG and decreased repeat-revascularization rate.
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Affiliation(s)
- Dai Tasaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, Tokyo, Japan
| | - Hirokuni Arai
- Department of Cardiovascular Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kenji Yokoyama
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, Tokyo, Japan
| | - Tomoya Yoshizaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, Tokyo, Japan
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Bhattacharyya A, Ferreira PP, Panda K, Masunaga SH, de Faria LR, Correa LE, Santos FB, Adroja DT, Yokoyama K, Dorini TT, Jardim RF, Eleno LTF, Machado AJS. Electron-phonon superconductivity in C-doped topological nodal-line semimetal Zr 5Pt 3: a muon spin rotation and relaxation (μSR) study. J Phys Condens Matter 2021; 34:035602. [PMID: 34592722 DOI: 10.1088/1361-648x/ac2bc7] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
In the present work, we demonstrate that C-doped Zr5Pt3is an electron-phonon superconductor (with critical temperatureTC= 3.8 K) with a nonsymmorphic topological Dirac nodal-line semimetal state, which we report here for the first time. The superconducting properties of Zr5Pt3C0.5have been investigated by means of magnetization, resistivity, specific heat, and muon spin rotation and relaxation (μSR) measurements. We find that at low temperatures, the depolarization rate is almost constant and it can be well described by a single-bands-wave model with a superconducting gap of 2Δ(0)/kBTC= 3.84, somewhat higher than the value of BCS theory. From the transverse field μSR analysis, we estimate the London penetration depthλL= 469 nm, superconducting carrier densityns= 1.83 × 1026 m-3, and effective massm* = 1.428me. The zero field μSR confirms the absence of any spontaneous magnetic field in the superconducting ground state. In order to gain additional insights into the electronic ground state of C-doped Zr5Pt3, we also performed first-principles calculations within the framework of density functional theory (DFT). The observed homogenous electronic character of the Fermi surface as well as the mutual decrease ofTCand density of states at the Fermi level are consistent with the experimental findings of this study. However, the band structure reveals the presence of robust, gapless fourfold-degenerate nodal lines protected by 63screw rotations and glide mirror planes. Therefore, Zr5Pt3represents a novel, unprecedented condensed matter system to investigate the intricate interplay between superconductivity and topology.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - P P Ferreira
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - K Panda
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - S H Masunaga
- Departamento de Física, Centro Universitário FEI, São Bernardo do Campo, Brazil
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L R de Faria
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - L E Correa
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - F B Santos
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, Auckland Park 2006, South Africa
| | - K Yokoyama
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
| | - T T Dorini
- Université de Lorraine, CNRS, IJL, Nancy, France
| | - R F Jardim
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L T F Eleno
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - A J S Machado
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
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17
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Yokoyama K. [Treatment of ITP]. Rinsho Ketsueki 2021; 62:1229-1235. [PMID: 34497211 DOI: 10.11406/rinketsu.62.1229] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Helicobacter eradication therapy is the first-line therapy for patients with Helicobacter positive idiopathic thrombocytopenic purpura (ITP) in Japan. Indications for treatement in patients with Helicobacter negative, or post-Helicobacter eradicated ITP are platelet counts less than 20×106/l or severe bleeding. The first-line treatment for these patients is corticosteroids. Thrombopoietin receptor agonists (TPO-RAs), rituximab, and splenectomy are second-line treatments for patients with corticosteroid refractory ITP. The choice of a second-line treatment should be determined in consideration of the advantages and disadvantages of each treatment. TPO-RAs are effective in over 80% of patients; however, long-term administration is usually needed. Rituximab treatment ends in four weeks, but its durable response rate is relatively low. The durable response rate of splenectomy is relatively high; however, it causes long-term complications. Effective treatments for patients with ITP who are refractory to second-line treatments have not been established. Some novel drugs are under clinical trials, and a treatment strategy for these patients is expected to be established.
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Affiliation(s)
- Kenji Yokoyama
- Department of Hematology/Oncology, Tokai University Hachioji Hospital
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18
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Takeda Y, Fujii K, Suzue N, Miyatake K, Kawasaki Y, Yokoyama K. Repair Tension During Arthroscopic Rotator Cuff Repair is Correlated With Preoperative Tendon Retraction and Postoperative Rotator Cuff Integrity. Arthroscopy 2021; 37:2735-2742. [PMID: 33887410 DOI: 10.1016/j.arthro.2021.03.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 03/28/2021] [Accepted: 03/30/2021] [Indexed: 02/02/2023]
Abstract
PURPOSE This study aimed to examine the correlation of repair tension during arthroscopic rotator cuff repair (ARCR) with preoperative factors and to evaluate whether measuring tension during ARCR is effective for predicting rotator cuff integrity after ARCR. METHODS Patients who underwent ARCR from May 2014 to June 2017 were enrolled in this study. Inclusion criteria were patients with medium or larger-sized tears and with a minimum of 6 months' follow-up. Patients with a partial repair were excluded. Intraoperative repair tension was measured according to Davidson's method. Correlation of repair tension with preoperative factors was evaluated with Pearson and Spearman correlation coefficient tests. Logistic regression analysis was performed on intraoperative factors, including repair tension, to identify independent predictors of retear after ARCR. Receiver operating characteristic (ROC) curve was used to determine the cutoff value of repair tension for retear. RESULTS One-hundred twenty patients met the inclusion criteria. Mean repair tension was 26.6 ± 12.6 N, and retear was found in 29 shoulders (24.2%). Among the preoperative factors, tear size in the mediolateral (P < .001) and anteroposterior (P < .001) directions, DeOrio and Cofield's classification (P <0.001), geometric classification (P <.001), and fatty infiltration of supraspinatus (P = .006) and infraspinatus (P = .003) were significantly correlated with repair tension. However, multivariable logistic regression analysis identified only tear size in the mediolateral direction as an independent predictor of repair tension (P = .036). Logistic regression analysis showed that repair tension (P = .02) and geometric classification (P < .001) are significant factors affecting rotator cuff integrity after ARCR. ROC curve analysis showed the cutoff value of repair tension of large to massive tears for retear to be 35.6 N. CONCLUSION This study demonstrated that intraoperative repair tension is strongly correlated with tear size in the mediolateral direction based on preoperative magnetic resonance imaging and that measuring tension during ARCR is effective for predicting rotator cuff integrity after ARCR. LEVEL OF EVIDENCE Level IV, prognostic study.
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Affiliation(s)
- Yoshitsugu Takeda
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima.
| | - Koji Fujii
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima
| | - Naoto Suzue
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima
| | | | - Yoshiteru Kawasaki
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima
| | - Kenji Yokoyama
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima; Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
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19
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Fukuda M, Seki Y, Ezato K, Yokoyama K, Nishi H, Suzuki S, Hirai T. Performance evaluation of tungsten for ITER divertor toward mass production. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Yokoyama K, Ishikawa M. Great achievements of M. Salvatores for nuclear data adjustment study with use of integral experiments. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2020.108100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Horiuchi H, Morishita E, Urano T, Yokoyama K. COVID-19-Related Thrombosis in Japan: Final Report of a Questionnaire-Based Survey in 2020. J Atheroscler Thromb 2021; 28:406-416. [PMID: 33678766 PMCID: PMC8147567 DOI: 10.5551/jat.rpt001] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [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] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 02/24/2021] [Indexed: 02/06/2023] Open
Abstract
A questionnaire on COVID-19-related thrombosis in patients hospitalized before Aug 31, 2020, was sent to 399 hospitals throughout Japan. Responses were received from 111 (27.8%) with information on 6,202 COVID-19 patients. Of these, 333 and 56 required ventilation or extracorporeal membrane oxygenation (ECMO), respectively, and 212 died (3.4%). D-dimer levels were measured in 75.0% of the patients, revealing that 9.2% and 7.6% exhibited D-dimer increases of 3-8-fold and ≥8-fold the reference value, respectively. Thrombotic events occurred in 108 patients (1.86% of the 5,807 patients with available data) including symptomatic cerebral infarction in 24, myocardial infarction in 7, deep vein thrombosis in 41, pulmonary thromboembolism in 30, and other thrombotic events in 22. Some patients developed multiple thrombotic events. Thrombosis occurred in 32 patients with mild or moderate COVID-19 severity (0.59% of those with data available) and in 52 patients on ventilation or ECMO (13.5% of severe patients for whom data were available). Thrombosis occurred in 67 patients during worsening clinical condition and in 26 during recovery. Anticoagulant therapy was provided to 893 patients (14.6% of the 6,119 patients with available data), the main reasons being provided as elevated D-dimer levels and worsening clinical condition.
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Affiliation(s)
- Hisanori Horiuchi
- The Japanese Society of Thrombosis and Hemostasis
- The Japan Atherosclerosis Society
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Eriko Morishita
- The Japanese Society of Thrombosis and Hemostasis
- The Japan Atherosclerosis Society
- The Research Study Team for Intractable Disease (Blood Coagulation Abnormalities) supported by the Ministry of Health, Labour and Welfare of Japan
- Department of Clinical Laboratory Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Tetsumei Urano
- The Japanese Society of Thrombosis and Hemostasis
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kenji Yokoyama
- The Japanese Society of Thrombosis and Hemostasis
- The Research Study Team for Intractable Disease (Blood Coagulation Abnormalities) supported by the Ministry of Health, Labour and Welfare of Japan
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - the Questionnaire-survey Joint Team on The COVID-19-related thrombosis
- The Japanese Society of Thrombosis and Hemostasis
- The Japan Atherosclerosis Society
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- The Research Study Team for Intractable Disease (Blood Coagulation Abnormalities) supported by the Ministry of Health, Labour and Welfare of Japan
- Department of Clinical Laboratory Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Health Sciences, Kanazawa University, Kanazawa, Japan
- Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Japan
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
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Abstract
BACKGROUND Primary cardiac schwannoma in the left atrium and schwannomatosis are rare diseases. CASE PRESENTATION We report the case of a 46-year-old asymptomatic man who had tumor resection for parapharyngeal schwannoma at another institute 1 year ago. He was presented to our hospital for further evaluation of an abnormal cardiac shadow that was found incidentally. Computed tomography and transesophageal echocardiography revealed a cardiac tumor originating from the posterior wall of the left atrium, an atrial septal defect, and two other mediastinal tumors. The cardiac mass was completely excised with normal margins of the surrounding atrial wall. The post-resection defect and atrial septal defect were repaired using bovine pericardium. Pathological findings were compatible with benign schwannoma, and a diagnosis of schwannomatosis was made based on his medical history. CONCLUSION Primary cardiac schwannoma is an exceedingly rare tumor, and the incidence in schwannomatosis has not been reported in the literature.
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Affiliation(s)
- Kenji Yokoyama
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, 1-26-1 Kyonancho, Musashino-city, Tokyo, 180-8610, Japan.
| | - Tomoya Yoshizaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, 1-26-1 Kyonancho, Musashino-city, Tokyo, 180-8610, Japan
| | - Dai Tasaki
- Department of Cardiovascular Surgery, Musashino Red Cross Hospital, 1-26-1 Kyonancho, Musashino-city, Tokyo, 180-8610, Japan
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23
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Matsuura T, Takata Y, Iwame T, Iwase J, Yokoyama K, Takao S, Nishio S, Arisawa K, Sairyo K. Limiting the Pitch Count in Youth Baseball Pitchers Decreases Elbow Pain. Orthop J Sports Med 2021; 9:2325967121989108. [PMID: 33796588 PMCID: PMC7983445 DOI: 10.1177/2325967121989108] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 09/24/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022] Open
Abstract
Background Reducing the number of pitches thrown is regarded as the most effective way to prevent throwing injuries in youth baseball pitchers. However, few studies have compared the effectiveness of limiting the pitch count versus the limiting the number of innings pitched in terms of elbow injuries. Hypothesis We hypothesized that, compared with inning limits, pitch count limits would lead to greater decreases in elbow pain, range of motion deficits, positive moving valgus stress test results, and the risk of capitellar osteochondritis dissecans (OCD). Study Design Cohort study; Level of evidence, 3. Methods This study retrospectively reviewed baseball pitchers aged 8 to 12 years in 2017 and 2018. Inning and pitch count limits in games were set to a daily maximum of 7 innings in 2017 and 70 pitches in 2018. Elbow pain, range of motion, and moving valgus stress test results were evaluated. The presence of capitellar OCD was assessed on ultrasonographic and radiographic images. Results A total of 352 pitchers in 2017 and 367 pitchers in 2018 participated. The mean pitch count per game was lower in the pitch count limit (CL) group (52.5 ± 16.0) than in the inning limit (IL) group (98.2 ± 19.5) (P < .001). Compared with the IL group, the CL group had significantly lower rates of elbow pain (40.9% vs 31.9%, respectively; P = .01) and reduced flexion (19.0% vs 10.6%, respectively; P = .001). Multivariate analysis revealed a significant association between elbow pain and age in both the IL and the CL groups (P < .0001 and P = .02, respectively) and between OCD and elbow pain in the CL group (P = .04). Conclusion A pitch count limit of ≤70 pitches per day for baseball pitchers ≤12 years could be more protective against elbow pain and reduced flexion than a limit of ≤7 innings per day, but it may not be effective for reducing the risk of capitellar OCD.
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Affiliation(s)
- Tetsuya Matsuura
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Yuki Takata
- Department of Rehabilitation Medicine, Tokushima University Hospital, Tokushima, Japan
| | - Toshiyuki Iwame
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Jyoji Iwase
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Kenji Yokoyama
- Department of Orthopaedic Surgery, Tokushima Prefecture Naruto Hospital, Naruto, Japan
| | - Shoichiro Takao
- Department of Diagnostic Radiology, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Susumu Nishio
- Ultrasound Examination Center, Tokushima University Hospital, Tokushima, Japan
| | - Kokichi Arisawa
- Department of Preventive Medicine, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
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Hirooka K, Yokoyama K, Tokumo K, Kiuchi Y. Comparison of the Humphrey Field Analyzer and Photopic Negative Response of Focal Macular Electroretinograms in the Evaluation of the Relationship Between Macula Structure and Function. Front Med (Lausanne) 2021; 8:649971. [PMID: 33718414 PMCID: PMC7952991 DOI: 10.3389/fmed.2021.649971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 02/08/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose: To investigate the association between macular inner retinal layer thickness and macula visual field (VF) mean deviation as measured by the Humphrey Field Analyzer (HFA) or macular function as measured by focal macular electroretinograms (ERGs) in patients with glaucoma. Methods: The participants in this cross-sectional study were 71 patients with glaucoma and 10 healthy controls. Macular inner retinal layer thickness and function were measured in all participants using optical coherence tomography (OCT) and HFA or focal macular ERGs, respectively. Macular OCT images were segmented into the macular retinal nerve fiber layer (mRNFL), macular ganglion cell layer/inner plexiform layer (GCL/IPL), and ganglion cell complex (GCC). Spearman correlation analysis was used to assess the relationship between macular inner retinal layer thickness and function. Results: Focal macular ERGs were composed of a negative wave (N1), a positive wave (P1), and a slow negative wave (N2). The N2 response density was significantly reduced in eyes with glaucoma, and was significantly associated with the thickness of the mRNFL (R = 0.317), GCL/IPL (R = 0.372), or GCC (R = 0.367). The observed structure–function relationship was also significantly correlated with the HFA VF mean deviation for each thickness [mRNFL (R = 0.728), GCL/IPL (R = 0.603), or GCC (R = 0.754)]. Conclusions: Although a significant correlation was found between the N2 response density and the thickness of the macular inner layer, the observed structure–function relationship with the mean deviation of the HFA VF was higher than that of the N2 response density.
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Affiliation(s)
- Kazuyuki Hirooka
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Yokoyama
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Kana Tokumo
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshiaki Kiuchi
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Sakurai M, Nannya Y, Yamazaki R, Yamaguchi K, Koda Y, Abe R, Yokoyama K, Ogawa S, Mori T. Germline RUNX1 translocation in familial platelet disorder with propensity to myeloid malignancies. Ann Hematol 2021; 101:237-239. [PMID: 33462643 DOI: 10.1007/s00277-021-04430-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 01/14/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Masatoshi Sakurai
- Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan.
| | - Yasuhito Nannya
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Rie Yamazaki
- Center for Transfusion Medicine and Cell Therapy, Keio University School of Medicine, Tokyo, Japan
| | - Kentaro Yamaguchi
- Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Yuya Koda
- Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Ryohei Abe
- Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - Kenji Yokoyama
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Takehiko Mori
- Division of Hematology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
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Fujita S, Yokoyama K, Hagiwara A, Kato S, Andica C, Kamagata K, Hattori N, Abe O, Aoki S. 3D Quantitative Synthetic MRI in the Evaluation of Multiple Sclerosis Lesions. AJNR Am J Neuroradiol 2021; 42:471-478. [PMID: 33414234 DOI: 10.3174/ajnr.a6930] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/30/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND PURPOSE Synthetic MR imaging creates multiple contrast-weighted images based on a single time-efficient quantitative scan, which has been mostly performed for 2D acquisition. We assessed the utility of 3D synthetic MR imaging in patients with MS by comparing its diagnostic image quality and lesion volumetry with conventional MR imaging. MATERIALS AND METHODS Twenty-four patients with MS prospectively underwent 3D quantitative synthetic MR imaging and conventional T1-weighted, T2-weighted, FLAIR, and double inversion recovery imaging, with acquisition times of 9 minutes 3 seconds and 18 minutes 27 seconds for the synthetic MR imaging and conventional MR imaging sequences, respectively. Synthetic phase-sensitive inversion recovery images and those corresponding to conventional MR imaging contrasts were created for synthetic MR imaging. Two neuroradiologists independently assessed the image quality on a 5-point Likert scale. The numbers of cortical lesions and lesion volumes were quantified using both synthetic and conventional image sets. RESULTS The overall diagnostic image quality of synthetic T1WI and double inversion recovery images was noninferior to that of conventional images (P = .23 and .20, respectively), whereas that of synthetic T2WI and FLAIR was inferior to that of conventional images (both Ps < .001). There were no significant differences in the number of cortical lesions (P = .17 and .53 for each rater) or segmented lesion volumes (P = .61) between the synthetic and conventional image sets. CONCLUSIONS Three-dimensional synthetic MR imaging could serve as an alternative to conventional MR imaging in evaluating MS with a reduced scan time.
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Affiliation(s)
- S Fujita
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.).,Department of Radiology (S.F., S.K., O.A.), The University of Tokyo, Tokyo, Japan
| | - K Yokoyama
- Neurology (K.Y., N.H.), Juntendo University, Tokyo, Japan
| | - A Hagiwara
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.)
| | - S Kato
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.).,Department of Radiology (S.F., S.K., O.A.), The University of Tokyo, Tokyo, Japan
| | - C Andica
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.)
| | - K Kamagata
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.)
| | - N Hattori
- Neurology (K.Y., N.H.), Juntendo University, Tokyo, Japan
| | - O Abe
- Department of Radiology (S.F., S.K., O.A.), The University of Tokyo, Tokyo, Japan
| | - S Aoki
- From the Departments of Radiology (S.F., A.H., S.K., C.A., K.K., S.A.)
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Dupont E, Bossant M, Capote R, Carlson A, Danon Y, Fleming M, Ge Z, Harada H, Iwamoto O, Iwamoto N, Kimura A, Koning A, Massimi C, Negret A, Noguere G, Plompen A, Pronyaev V, Rimpault G, Simakov S, Stankovskiy A, Sun W, Trkov A, Wu H, Yokoyama K. HPRL – International cooperation to identify and monitor priority nuclear data needs for nuclear applications. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023915005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The OECD-NEA High Priority Request List (HPRL) is a point of reference to guide and stimulate the improvement of nuclear data for nuclear energy and other applications, and a tool to bridge the gap between data users and producers. The HPRL is application-driven and the requests are submitted by nuclear data users or representatives of the user’s communities. A panel of international experts reviews and monitors the requests in the framework of an Expert Group mandated by the NEA Nuclear Science Committee Working Party on International Nuclear Data Evaluation Cooperation (WPEC). After approval, individual requests are classified to three categories: high priority requests, general requests, and special purpose requests (e.g., dosimetry, standards). The HPRL is hosted by the NEA in the form of a relational database publicly available on the web. This paper provides an overview of HPRL entries, status and outlook. Examples of requests successfully completed are given and new requests are described with emphasis on updated nuclear data needs in the fields of nuclear energy, neutron standards and dosimetry.
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Ubara Y, Hara S, Katori H, Arizono K, Ikeguti H, Yokoyama K, Hinosita F, Inoue S, Kuzuhara K, Yamada A, Mimura N. Acute Pancreatitis in a Capd Patient in Association with Hemolytic Anemia. Perit Dial Int 2020. [DOI: 10.1177/089686089701700123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y. Ubara
- Department of Interna Medicine1, Tokyo, Japan
| | - S. Hara
- Department of Interna Medicine1, Tokyo, Japan
| | - H. Katori
- Department of Interna Medicine1, Tokyo, Japan
| | - K. Arizono
- Department of Interna Medicine1, Tokyo, Japan
| | - H. Ikeguti
- Department of Interna Medicine1, Tokyo, Japan
| | - K. Yokoyama
- Department of Interna Medicine1, Tokyo, Japan
| | - F. Hinosita
- Department of Interna Medicine1, Tokyo, Japan
| | - S. Inoue
- Department of Surgery Toranomon Hospital Kidney Center Minatoku, Tokyo, Japan
| | - K. Kuzuhara
- Department of Surgery Toranomon Hospital Kidney Center Minatoku, Tokyo, Japan
| | - A. Yamada
- Department of Interna Medicine1, Tokyo, Japan
| | - N. Mimura
- Department of Interna Medicine1, Tokyo, Japan
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Affiliation(s)
- M. Aramini
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
| | - S.P. Cottrell
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
| | - J.N.T. Peck
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
| | - K. Yokoyama
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
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Fleming M, Bernard D, Brown D, Chadwick M, de Saint Jean C, Dupont E, Ge Z, Harada H, Hawari A, Herman M, Iwamoto O, Kodeli I, Koning A, Malvagi F, McNabb D, Mills R, Noguère G, Palmiotti G, Plompen A, Salvatores M, Sobes V, White M, Yokoyama K. Overview of the OECD-NEA Working Party on International Nuclear Data Evaluation Cooperation (WPEC). EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023915002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The OECD Nuclear Energy Agency (NEA) Working Party on International Nuclear Data Evaluation Cooperation (WPEC) was established in 1989 to facilitate collaboration in nuclear data activities. Over its thirty year history, different Subgroups have been created to address topics in nearly every aspect of nuclear data, including: experimental measurements, evaluation, validation, model development, quality assurance of databases and the development of software tools.
WPEC has recently completed activities on fission yield evaluation, the general nuclear database structure (GNDS) to replace the ENDF-6 format, methods to provide feedback to evaluation, studies of specific capture cross sections, new methods in thermal scattering kernel evaluation and the Collaborative International Evaluated Library Organisation (CIELO) Pilot Project. Ongoing activities in GNDS application programming interface (API) development, methods for covariance evaluation and quality assurance in nuclear data validation using the International Criticality Safety Benchmark Evaluation Project (ICSBEP) database are complemented by the work of two Expert Groups that oversee the High-Priority Request List (HPRL) for Nuclear Data and the continuous development of the GNDS. New activities on the use of integral experiments for nuclear data validation and adjustment, as well as the use of the Shielding Integral Benchmark Archive and Database (SINBAD) for validation have begun and will be coordinated alongside future Subgroups.
After three decades we will review the status of WPEC, how it integrates other collections and activities organised by the NEA and how it dovetails with the initiatives of the IAEA and other bodies to effectively coordinate international activities in nuclear data.
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Hagiwara A, Kamagata K, Shimoji K, Yokoyama K, Andica C, Hori M, Fujita S, Maekawa T, Irie R, Akashi T, Wada A, Suzuki M, Abe O, Hattori N, Aoki S. White Matter Abnormalities in Multiple Sclerosis Evaluated by Quantitative Synthetic MRI, Diffusion Tensor Imaging, and Neurite Orientation Dispersion and Density Imaging. AJNR Am J Neuroradiol 2019; 40:1642-1648. [PMID: 31515218 DOI: 10.3174/ajnr.a6209] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 06/06/2019] [Accepted: 07/28/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE A number of MR-derived quantitative metrics have been suggested to assess the pathophysiology of MS, but the reports about combined analyses of these metrics are scarce. Our aim was to assess the spatial distribution of parameters for white matter myelin and axon integrity in patients with relapsing-remitting MS by multiparametric MR imaging. MATERIALS AND METHODS Twenty-four patients with relapsing-remitting MS and 24 age- and sex-matched controls were prospectively scanned by quantitative synthetic and 2-shell diffusion MR imaging. Synthetic MR imaging data were used to retrieve relaxometry parameters (R1 and R2 relaxation rates and proton density) and myelin volume fraction. Diffusion tensor metrics (fractional anisotropy and mean, axial, and radial diffusivity) and neurite orientation and dispersion index metrics (intracellular volume fraction, isotropic volume fraction, and orientation dispersion index) were retrieved from diffusion MR imaging data. These data were analyzed using Tract-Based Spatial Statistics. RESULTS Patients with MS showed significantly lower fractional anisotropy and myelin volume fraction and higher isotropic volume fraction in widespread white matter areas. Areas with different isotropic volume fractions were included within areas with lower fractional anisotropy. Myelin volume fraction showed no significant difference in some areas with significantly decreased fractional anisotropy in MS, including in the genu of the corpus callosum and bilateral anterior corona radiata, whereas myelin volume fraction was significantly decreased in some areas where fractional anisotropy showed no significant difference, including the bilateral posterior limb of the internal capsule, external capsule, sagittal striatum, fornix, and uncinate fasciculus. CONCLUSIONS We found differences in spatial distribution of abnormality in fractional anisotropy, isotropic volume fraction, and myelin volume fraction distribution in MS, which might be useful for characterizing white matter in patients with MS.
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Affiliation(s)
- A Hagiwara
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Radiology (A.H., S.F., T.M., R.I., O.A.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - K Kamagata
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
| | - K Shimoji
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Diagnostic Radiology (K.S.), Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan
| | - K Yokoyama
- Neurology (K.Y., N.H.), Juntendo University School of Medicine, Tokyo, Japan
| | - C Andica
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
| | - M Hori
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Radiology (M.H.), Toho University Omori Medical Center, Tokyo, Japan
| | - S Fujita
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Radiology (A.H., S.F., T.M., R.I., O.A.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - T Maekawa
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Radiology (A.H., S.F., T.M., R.I., O.A.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - R Irie
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
- Department of Radiology (A.H., S.F., T.M., R.I., O.A.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - T Akashi
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
| | - A Wada
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
| | - M Suzuki
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
| | - O Abe
- Department of Radiology (A.H., S.F., T.M., R.I., O.A.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - N Hattori
- Neurology (K.Y., N.H.), Juntendo University School of Medicine, Tokyo, Japan
| | - S Aoki
- From the Departments of Radiology (A.H., K.K., K.S., C.A., M.H., S.F., T.M., R.I., T.A., A.W., M.S., S.A.)
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Takei H, Shinoda J, Ikuta S, Maruyama T, Muragaki Y, Kawasaki T, Ikegame Y, Okada M, Ito T, Asano Y, Yokoyama K, Nakayama N, Yano H, Iwama T. P14.01 Differential diagnosis of IDH mutant/IDH wildtype of glioma by using 11C-methionine, 11C-choline, and18F-fluorodeoxyglucose positron emission tomography. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
Positron emission tomography (PET) is important in noninvasive diagnostic imaging of gliomas. There are many PET studies on glioma diagnosis based on the 2007 World Health Organization (WHO) classification; however, there are no studies on glioma diagnosis using the new classification (the 2016 WHO classification).Here we investigated the relationship between PET imaging using 11C-methionine (MET), 11C-choline (CHO), and 18F-fluorodeoxyglucose (FDG) and wildtype isocitrate dehydrogenase (IDH) (IDH-wt)/mutant IDH (IDH-mut) in astrocytic and oligodendroglial tumors according to the 2016 WHO classification.
MATERIAL AND METHODS
In total, 105 patients with newly diagnosed cerebral gliomas (six diffuse astrocytomas [DAs] with IDH-wt, six DAs with IDH-mut, seven anaplastic astrocytomas [AAs] with IDH-wt, 24 AAs with IDH-mut, 26 glioblastomas [GBMs] with IDH-wt, five GBMs with IDH-mut, 19 oligodendrogliomas [ODs], and 12 anaplastic oligodendrogliomas [AOs]) were included. All OD and AO patients had both IDH-mut and 1p/19q codeletion. The maximum standardized uptake values (SUVs) of the tumor/normal cortex mean SUV ratios (T/N ratios) for MET, CHO, and FDG were calculated; the mean T/N ratios of DA, AA, and GBM with IDH-wt/IDH-mut were compared. The diagnostic accuracy for distinguishing gliomas with IDH-wt from those with IDH-mut was assessed using receiver operating characteristic (ROC) curve analysis of the mean T/N ratios for the three PET tracers.
RESULTS
There were significant differences in the mean T/N ratios for all three PET tracers between the IDH-wt and IDH-mut groups including all histological classifications (p<0.001). Among the 27 gliomas with mean T/N ratios higher than the cutoff values for all three PET tracers, 23 (85.2%) were classified into the IDH-wt group using ROC analysis. In DA, there were no significant differences in the T/N ratios for MET, CHO, and FDG between the IDH-wt and IDH-mut groups. In AA, the mean T/N ratios of all three PET tracers in the IDH-wt group were significantly higher than those in the IDH-mut group (p<0.001). In GBM, the mean T/N ratio in the IDH-wt group was significantly higher than that of the IDH-mut group for both MET (p=0.034) and CHO (p=0.01). However, there was no significant difference in the ratio for FDG.
CONCLUSIONS
PET imaging using MET, CHO, and FDG was confirmed to be informative for preoperatively differentiating gliomas according to the 2016 WHO classification, particularly for differentiating IDH-wt and IDH-mut tumors.
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Affiliation(s)
- H Takei
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu City, Gifu prefecture, Japan
| | - J Shinoda
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
- Department of Clinical Brain Science, Gifu University Graduate School of Medicine, Minokamo City, Gifu Prefecture, Japan
| | - S Ikuta
- Department of Neurosurgery, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo, Japan
| | - T Maruyama
- Department of Neurosurgery, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo, Japan
| | - Y Muragaki
- Department of Neurosurgery, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo, Japan
| | - T Kawasaki
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu City, Gifu prefecture, Japan
| | - Y Ikegame
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
- Department of Clinical Brain Science, Gifu University Graduate School of Medicine, Minokamo City, Gifu Prefecture, Japan
| | - M Okada
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
| | - T Ito
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
| | - Y Asano
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
- Department of Clinical Brain Science, Gifu University Graduate School of Medicine, Minokamo City, Gifu Prefecture, Japan
| | - K Yokoyama
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu Prefecture, Japan
| | - N Nakayama
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu City, Gifu prefecture, Japan
| | - H Yano
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu City, Gifu prefecture, Japan
| | - T Iwama
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu City, Gifu prefecture, Japan
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Abstract
Abstract
BACKGROUND
Because blocking vascular endothelial growth factor from reaching leaky capillaries is a logical strategy for the treatment, we reasoned that bevacizumab might be an effective treatment on recurrent malignant glioma and radiation necrosis (RN). In this study, the authors examined to differentiate RN from recurrent malignant glioma, and evaluated the results of bevacizumab treatment in each diagnosis.
MATERIAL AND METHODS
Four patients of malignant glioma (2 glioblastomas and 2 anaplastic astrocytomas), which demonstrated symptomatic lesion after radiotherapy, were involved in this study. All four patients were treated with bevacizumab on a 10 mg/kg biweekly (one cycle), for a total dose of 30 mg/kg (3 cycles) or furthermore. RN was differentiated from local recurrence in all four patients on the basis of 11C-methionine positron emission tomography and/or clinical course. Clinical evaluation and MRI studies were obtained after bevacizumab treatment in all cases repeatedly as possible.
RESULTS
Two patients were diagnosed as RN, and another two patients as tumor recurrence. Of the two patients with RN, neurological dysfunction was distinctly alleviated after bevacizumab treatment. Other two patients with tumor recurrence demonstrated no remarkable improvement in neurological dysfunction after bevacizumab treatment. Of all the two patients with RN, post-treatment MRI performed after the bevacizumab therapy showed a significant reduction of the massive lesion.
CONCLUSION
We concluded that bevacizumab could control the symptomatic massive lesion occurring after radiotherapy, and it might be more effective with the patients of RN, than with those of recurrent tumor.
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Affiliation(s)
- K Miwa
- Department of Neurosurgery, Kizawa Memorial Hospital, Minokamo, Japan
| | - T Ito
- Department of Neurosurgery, Kizawa Memorial Hospital, Minokamo, Japan
| | - K Yokoyama
- Department of Neurosurgery, Kizawa Memorial Hospital, Minokamo, Japan
| | - J Shinoda
- Department of Neurosurgery, Kizawa Memorial Hospital, Minokamo, Japan
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Nishida Y, Takahashi YK, Kanai T, Nose Y, Ishibashi S, Sanjo N, Uzawa A, Oda F, Ozawa Y, Kuwabara S, Noguchi E, Suzuki S, Nakahara J, Suzuki N, Ogawa T, Yokoyama K, Hattori N, Konno S, Fujioka T, Kawaguchi N, Hatanaka Y, Sonoo M, Kaneko J, Ogino M, Nishiyama K, Nomura K, Yokota T. Safety of tapering tacrolimus dose in patients with well-controlled anti-acetylcholine receptor antibody-positive myasthenia gravis. Eur J Neurol 2019; 27:100-104. [PMID: 31309642 DOI: 10.1111/ene.14039] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/10/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND PURPOSE Tapering immunosuppressants is desirable in patients with well-controlled myasthenia gravis (MG). However, the association between tapering of calcineurin inhibitor dosage and reduction-associated exacerbation is not known. The aim of this study was to clarify the frequency of reduction-associated exacerbation when tacrolimus is tapered in stable patients with anti-acetylcholine receptor antibody-positive MG, and to determine the factors that predict exacerbations. METHODS We retrospectively analyzed 115 patients in whom tacrolimus dosage was tapered. The reduction-associated exacerbation was defined as the appearance or worsening of one or more MG symptoms <3 months after the reduction. RESULTS Tacrolimus dosage was successfully tapered in 110 patients (96%) without any exacerbation. Five patients (4%) experienced an exacerbation, but symptoms were reversed in all patients when the tacrolimus dose was increased to the previous maintenance level. No patient developed an MG crisis. The age at onset was significantly earlier (30 vs. 56 years, P = 0.025) and the reduction in dosage was significantly larger (2.0 vs. 1.0 mg/day, P = 0.002) in patients with reduction-associated exacerbation than in those without exacerbation. The cut-off values determined in a receiver-operating characteristic curve analysis were 52 years (sensitivity, 57%; specificity, 100%) for the age at onset and 1.5 mg (sensitivity, 80%; specificity, 100%) for the dose reduction. CONCLUSION Tapering of tacrolimus was possible in most patients with well-controlled anti-acetylcholine receptor antibody-positive MG. Early age at onset and a large reduction from maintenance dosage were associated with exacerbation. Reductions ≤1.5 mg/day from the maintenance dosage should be considered for patients with late-onset disease.
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Affiliation(s)
- Y Nishida
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y K Takahashi
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kanai
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Y Nose
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - S Ishibashi
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - N Sanjo
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - A Uzawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - F Oda
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Y Ozawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - S Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - E Noguchi
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - S Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - J Nakahara
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - N Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Ogawa
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - K Yokoyama
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - N Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - S Konno
- Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - T Fujioka
- Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan
| | | | - Y Hatanaka
- Department of Neurology, Teikyo University School of Medicine, Tokyo, Japan
| | - M Sonoo
- Department of Neurology, Teikyo University School of Medicine, Tokyo, Japan
| | - J Kaneko
- Department of Neurology, Kitasato University School of Medicine, Kanagawa, Japan
| | - M Ogino
- School of Medicine, Center for Medical Education, International University of Health and Welfare, Chiba, Japan
| | - K Nishiyama
- Department of Neurology, Kitasato University School of Medicine, Kanagawa, Japan
| | - K Nomura
- Department of Neurology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - T Yokota
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Tonogai I, Nishisho T, Takao S, Miyagi R, Yokoyama K, Toki S, Sairyo K. Symptomatic Os Intercuneiform: A Case Report. J Foot Ankle Surg 2019; 57:997-999. [PMID: 29631968 DOI: 10.1053/j.jfas.2017.11.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 02/03/2023]
Abstract
We encountered a case of an accessory bone in the foot in the distal portion of the tarsal navicular and the proximal portion of the intermediate cuneiform, namely an os intercuneiform. The patient presented with a history of pain on the dorsal aspect of the left foot, with tenderness and swelling. Perioperative findings revealed a synfibrotic connection between the accessory bone and the navicular and intermediate cuneiform. After unsuccessful conservative treatment, the accessory bone was excised, leading to postoperative symptomatic relief.
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Affiliation(s)
- Ichiro Tonogai
- Assistant Professor, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Toshihiko Nishisho
- Assistant Professor, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Shoichiro Takao
- Assistant Professor, Department of Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Ryo Miyagi
- Assistant Professor, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kenji Yokoyama
- Senior Resident, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Shunichi Toki
- Senior Resident, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Koichi Sairyo
- Chairman, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan; Professor, Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.
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Hagiwara A, Otsuka Y, Hori M, Tachibana Y, Yokoyama K, Fujita S, Andica C, Kamagata K, Irie R, Koshino S, Maekawa T, Chougar L, Wada A, Takemura MY, Hattori N, Aoki S. Improving the Quality of Synthetic FLAIR Images with Deep Learning Using a Conditional Generative Adversarial Network for Pixel-by-Pixel Image Translation. AJNR Am J Neuroradiol 2019; 40:224-230. [PMID: 30630834 DOI: 10.3174/ajnr.a5927] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/15/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND PURPOSE Synthetic FLAIR images are of lower quality than conventional FLAIR images. Here, we aimed to improve the synthetic FLAIR image quality using deep learning with pixel-by-pixel translation through conditional generative adversarial network training. MATERIALS AND METHODS Forty patients with MS were prospectively included and scanned (3T) to acquire synthetic MR imaging and conventional FLAIR images. Synthetic FLAIR images were created with the SyMRI software. Acquired data were divided into 30 training and 10 test datasets. A conditional generative adversarial network was trained to generate improved FLAIR images from raw synthetic MR imaging data using conventional FLAIR images as targets. The peak signal-to-noise ratio, normalized root mean square error, and the Dice index of MS lesion maps were calculated for synthetic and deep learning FLAIR images against conventional FLAIR images, respectively. Lesion conspicuity and the existence of artifacts were visually assessed. RESULTS The peak signal-to-noise ratio and normalized root mean square error were significantly higher and lower, respectively, in generated-versus-synthetic FLAIR images in aggregate intracranial tissues and all tissue segments (all P < .001). The Dice index of lesion maps and visual lesion conspicuity were comparable between generated and synthetic FLAIR images (P = 1 and .59, respectively). Generated FLAIR images showed fewer granular artifacts (P = .003) and swelling artifacts (in all cases) than synthetic FLAIR images. CONCLUSIONS Using deep learning, we improved the synthetic FLAIR image quality by generating FLAIR images that have contrast closer to that of conventional FLAIR images and fewer granular and swelling artifacts, while preserving the lesion contrast.
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Affiliation(s)
- A Hagiwara
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.) .,Department of Radiology (A.H., R.I., S.K., T.M.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Y Otsuka
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Milliman Inc (Y.O.). Tokyo, Japan
| | - M Hori
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - Y Tachibana
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Applied MRI Research (Y.T.), Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, Chiba, Japan
| | - K Yokoyama
- Neurology (K.Y., N.H.), Juntendo University School of Medicine, Tokyo, Japan
| | - S Fujita
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - C Andica
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - K Kamagata
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - R Irie
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Department of Radiology (A.H., R.I., S.K., T.M.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - S Koshino
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Department of Radiology (A.H., R.I., S.K., T.M.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - T Maekawa
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Department of Radiology (A.H., R.I., S.K., T.M.), Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - L Chougar
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.).,Department of Radiology (L.C.), Hopital Saint-Joseph, Paris, France; and Department of Radiological Sciences
| | - A Wada
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - M Y Takemura
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
| | - N Hattori
- Neurology (K.Y., N.H.), Juntendo University School of Medicine, Tokyo, Japan
| | - S Aoki
- From the Departments of Radiology (A.H., Y.O., M.H., Y.T., S.F., C.A., K.K., R.I., S.K., T.M., L.C., A.W., M.Y.T., S.A.)
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Iwasa H, Ozawa K, Sasaki N, Kinoshita N, Yokoyama K, Hiratsuka A. Fungal FAD-dependent glucose dehydrogenases concerning high activity, affinity, and thermostability for maltose-insensitive blood glucose sensor. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Miyatake K, Takeda Y, Fujii K, Suzue N, Kawasaki Y, Omichi Y, Yokoyama K. Comparable clinical and structural outcomes after arthroscopic rotator cuff repair in diabetic and non-diabetic patients. Knee Surg Sports Traumatol Arthrosc 2018; 26:3810-3817. [PMID: 30019074 DOI: 10.1007/s00167-018-4994-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 11/15/2017] [Accepted: 05/30/2018] [Indexed: 01/18/2023]
Abstract
PURPOSE To compare clinical outcome and rotator cuff integrity after arthroscopic rotator cuff repair (ARCR) in patients with and without diabetes mellitus. METHODS This retrospective study involved 264 consecutive patients who underwent ARCR from 2012 to 2015. Inclusion criteria were a medium or large-sized tear and a minimum of 1-year follow-up. Clinical outcome measures included range of motion (ROM) and the Japanese Orthopaedic Association (JOA) and University of California, Los Angeles (UCLA) scores preoperatively and at final follow-up. Rotator cuff retear was evaluated with magnetic resonance imaging at 3 months post-surgery and final follow-up. Diabetic patients with poor control were pre-operatively hospitalized for intensive diabetic control. RESULTS Our inclusion criteria were met by 30 diabetic patients and 126 non-diabetic patients. Demographic data were not significantly different between the groups, except body mass index (p = 0.021). Preoperative JOA and UCLA scores of the diabetic patients were significantly lower than those of the non-diabetic patients (p < 0.001, and p = 0.006, respectively); however, the scores at final follow-up were not different. ROM was significantly restricted in the diabetic patients before surgery (forward flexion, abduction, internal rotation: p < 0.001, external rotation: p = 0.035), but at the final follow-up, there was no significant difference except for internal rotation (p = 0.005). The retear rate in diabetic patients (23.3%) was not significantly different from that in non-diabetic patients (15.1%). CONCLUSIONS Diabetic patients who had good perioperative glycemic control showed clinical and structural outcomes comparable to non-diabetic patients after ARCR. Intensive perioperative glycemic control and patient education are recommended for preoperative uncontrolled diabetic patients. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Katsutoshi Miyatake
- Department of Orthopaedic Surgery, Yoshinogawa Medical Center, 120 Nishichiejima, Chiejima, Kamojima-cho, Yoshinogawa, Tokushima, 776-8511, Japan
| | - Yoshitsugu Takeda
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan.
| | - Koji Fujii
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan
| | - Naoto Suzue
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan
| | - Yoshiteru Kawasaki
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan
| | - Yasuyuki Omichi
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan
| | - Kenji Yokoyama
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, 103 Irinokuchi, Komatsushima-cho, Komatsushima, Tokushima, 773-8502, Japan
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Yokoyama K, Kitada T. Generalized formulation of extended cross-section adjustment method based on minimum variance unbiased linear estimation. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1531078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Kenji Yokoyama
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Takanori Kitada
- Graduate School of Engineering, Osaka University, Osaka, Japan
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Isogai H, Naito R, Kasai T, Miyazaki T, Yokoyama K, Tokano T, Miyauchi K, Nakazato Y, Daida H. P3474Temporal trends in clinical features and outcomes in the elderly following percutaneous coronary intervention. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Isogai
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - R Naito
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - T Kasai
- Juntendo University, Department of Cardiovascular medicine, Tokyo, Japan
| | - T Miyazaki
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - K Yokoyama
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - T Tokano
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - K Miyauchi
- Juntendo Tokyo Koto Geriatric Medical Center, Cardiology, Tokyo, Japan
| | - Y Nakazato
- Juntendo Urayasu Hospital, Heart Center, Urayasu, Japan
| | - H Daida
- Juntendo University, Department of Cardiovascular medicine, Tokyo, Japan
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Oda A, Yokoyama K, Murata M, Tokuhira M, Nakamura K, Handa M, Watanabe K, Ikeda Y. Protein Tyrosine Phosphorylation in Human Platelets during Shear Stress-Induced Platelet Aggregation (SIPA) Is Regulated by Glycoprotein (GP) Ib/IX as well as GP IIb/IIIa and Requires Intact Cytoskeleton and Endogenous ADP. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649806] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryShear stress-induced platelet aggregation (SIPA) may be essential in thrombus formation in pathologically stenotic arteries. Intracellular events during SIPA are, however, poorly understood. Washed platelets were exposed to shear stress (108 dyne/cm2) in the presence of von Willebrand factor (vWf, 10 μg/ml) and 1 mM CaCl2 for various time intervals, and then lyzed in SDS. Platelet proteins were separated by 10% SDS-PAGE and tyrosine phosphorylated proteins were detected by immunoblotting with an anti-phosphotyrosine monoclonal antibody. Increased tyrosine phosphorylation of proteins of 130, 100, 85, 74, 70, 64, 58, and 40 kDa was observed within 30 s after the beginning of exposure of platelets to high shear force and the degree of tyrosine phosphorylation continued to increase up to approximately 2 min after the exposure. A monoclonal antibody (MoAb) against vWf-binding domain of glycoprotein (GP) Ibα (GUR83-35), anti-vWf MoAb that inhibits binding of vWf to GPIbα (NMC-4), or a MoAb against GP IIb/IIIa complex (AP-2) inhibited SIPA as well as tyrosine phosphorylation of these proteins. Apyrase (an ADP scavenger, 2 U/ml), EDTA (5 mM), or RGDS peptide (200 μg/ml) also had inhibitory effects on both SIPA and tyrosine phosphorylation. However, Cytochalasin D (2 μM) or staurosporin (1 μM) did not affect SIPA, while they inhibited SIPA-associated tyrosine phosphorylation of those proteins. SIPA-associated tyrosine phosphorylation is a novel post-aggregatory pathway in signal transduction, which is dependent on the binding of vWf to GP Ib/IX and GP IIb/IIIa, endogenous ADP, and intact cytoskeleton.
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Affiliation(s)
- Atsushi Oda
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
| | - Kenji Yokoyama
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
| | - Mitsuru Murata
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
| | - Michihide Tokuhira
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
| | - Kosei Nakamura
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
| | - Makoto Handa
- The Blood Center, School of Medicine, Keio University, Tokyo, Japan
| | - Kiyoaki Watanabe
- The Department of Laboratory Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Yasuo Ikeda
- The Division of Hematology, Department of Internal Medicine, Keio University, Tokyo, Japan
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Ohama R, Ohama Y, Yokoyama K, Miura S, Kawamura K, Shimodozono M. Rey-Osterrieth complex figure (ROCF) tracing task for evaluating unilateral spatial neglect. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.174] [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: 11/29/2022]
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Takamatsu H, Takezako N, Zheng J, Moorhead M, Carlton VEH, Kong KA, Murata R, Ito S, Miyamoto T, Yokoyama K, Matsue K, Sato T, Kurokawa T, Yagi H, Terasaki Y, Ohata K, Matsumoto M, Yoshida T, Faham M, Nakao S. Prognostic value of sequencing-based minimal residual disease detection in patients with multiple myeloma who underwent autologous stem-cell transplantation. Ann Oncol 2018; 28:2503-2510. [PMID: 28945825 PMCID: PMC5834061 DOI: 10.1093/annonc/mdx340] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background Most patients with multiple myeloma (MM) are considered to be incurable, and relapse owing to minimal residual disease (MRD) is the main cause of death among these patients. Therefore, new technologies to assess deeper response are required. Patients and methods We retrospectively analyzed 125 patients with MM who underwent high-dose melphalan plus autologous stem-cell transplantation (ASCT) to detect MRD in autograft/bone marrow (BM) cells using a next-generation sequencing (NGS)-based method and allele-specific oligonucleotide-polymerase chain reaction (ASO-PCR). Results NGS-based method was applicable to 90% and this method had at least one to two logs greater sensitivity compared to ASO-PCR. MRD negative by NGS [MRDNGS(−)] (defined as <10−6) in post-ASCT BM cases (n = 26) showed a significantly better progression-free survival (PFS) (96% at 4 years, P < 0.001) and overall survival (OS) (100% at 4 years, P =0.04) than MRDNGS(+) in post-ASCT BM cases (n = 25). When restricting the analysis to the 39 complete response cases, patients who were MRDNGS(−) (n = 24) showed a significantly better PFS than those that were MRDNGS(+) (n = 15) (P =0.02). Moreover, MRDNGS(−) in post-ASCT BM cases (n = 12) showed significantly a better PFS than MRDNGS(+) cases (n = 7) where MRD was not detected by ASO-PCR (P = 0.001). Patients whose autografts were negative by NGS-based MRD assessment (<10−7) (n = 19) had 92% PFS and 100% OS at 4 years post-ASCT. Conversely, the NGS-based MRD positive patients who received post-ASCT treatment using novel agents (n = 49) had a significantly better PFS (P = 0.001) and tended to have a better OS (P= 0.214) than those that were untreated (n = 33). Conclusions Low level MRD detected by NGS-based platform but not ASO-PCR has significant prognostic value when assessing either the autograft product or BM cells post-ASCT.
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Affiliation(s)
- H Takamatsu
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa;.
| | - N Takezako
- Department of Hematology, National Hospital Organization Disaster Medical Center of Japan, Tachikawa, Japan
| | - J Zheng
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - M Moorhead
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - V E H Carlton
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - K A Kong
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - R Murata
- Division of Internal Medicine, Keiju Kanazawa Hospital, Kanazawa
| | - S Ito
- Department of Medical Oncology, Iwate Medical University School of Medicine, Morioka
| | - T Miyamoto
- Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka
| | - K Yokoyama
- Department of Hematology/Oncology, Tokai University Hachioji Hospital, Hachioji
| | - K Matsue
- Division of Hematology/Oncology, Department of Medicine, Kameda Medical Center, Kamogawa
| | - T Sato
- Department of Medical Oncology and Hematology, Sapporo Medical University School of Medicine, Sapporo
| | - T Kurokawa
- Department of Hematology, Toyama Red Cross Hospital, Toyama
| | - H Yagi
- Department of Hematology, Kinki University School of Medicine Nara Hospital, Ikoma, Nara
| | - Y Terasaki
- Division of Internal Medicine, Toyama City Hospital, Toyama
| | - K Ohata
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa
| | - M Matsumoto
- Department of Hematology, National Hospital Organization Shibukawa Medical Center, Shibukawa
| | - T Yoshida
- Department of Hematology, Shizuoka City Shimizu Hospital, Shizuoka, Japan
| | - M Faham
- Adaptive Biotechnologies Corp., South San Francisco, USA
| | - S Nakao
- Hematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa
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Yokoyama K, Ishizuka N, Uemura N, Mizokami Y, Hiraishi H, Murata M, Uchiyama S, Teramoto T, Shimada K, Yamazaki T, Oikawa S, Sugawara M, Ando K, Ikeda Y. Effects of daily aspirin on cancer incidence and mortality in the elderly Japanese. Res Pract Thromb Haemost 2018; 2:274-281. [PMID: 30046729 PMCID: PMC6055501 DOI: 10.1002/rth2.12097] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/07/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Long-term follow-up of studies to investigate preventive effects of aspirin on arterial thrombosis indicate that aspirin reduces the incidence and mortality of some cancers in Western populations. OBJECTIVES To explore the effects of aspirin on cancer incidence and mortality in the elderly Japanese. PATIENTS/METHODS Patients aged 60 to 85 years, presenting with hypertension, dyslipidemia, or diabetes mellitus (n = 14 601, 7297 in the aspirin group and 7304 in the no-aspirin group) participated the Japanese Primary Prevention Project (JPPP), a multicenter, open-label, randomized, parallel-group trial. A subanalysis of JPPP was performed to analyze the incidence of newly diagnosed cancer and death related to cancer. RESULTS The cumulative incidence of newly diagnosed cancer was 5.60% (4.65-6.64%) in the aspirin group and 4.14% (3.67-4.66%) in the no-aspirin group. The hazard ratio for newly diagnosed cancer was 1.24 (1.06-1.46), and the cancer incidence was significantly higher in the aspirin group. The cumulative cancer mortality was 1.96% (1.65-2.31%) in the aspirin group and 1.87% (1.56-2.22%) in the no-aspirin group, with no statistically significant difference. The Fine and Gray model suggested that the difference in the incidence of newly diagnosed cancer between the two groups decreased year by year. CONCLUSIONS Low-dose aspirin use did not reduce the cancer incidence or cancer mortality during a 5-year-average study period in the elderly Japanese. The cancer incidence in the aspirin group might decrease, however, to less than that in the no-aspirin group after the study period. Aspirin use might have led to earlier cancer diagnosis in our study.
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Affiliation(s)
- Kenji Yokoyama
- Department of Hematology/OncologyTokai University Hachioji HospitalHachiojiJapan
| | - Naoki Ishizuka
- Department of Clinical Trial Planning and ManagementClinical Research CenterCancer Institute HospitalTokyoJapan
| | - Naomi Uemura
- Department of Gastroenterology and HepatologyNational Center for Global Health and MedicineKohnodai HospitalIchikawaJapan
| | - Yuji Mizokami
- Endoscopic CenterUniversity of Tsukuba HospitalTsukubaJapan
| | | | - Mitsuru Murata
- Department of Laboratory MedicineKeio University School of MedicineTokyoJapan
| | - Shinichiro Uchiyama
- Clinical Research Center for MedicineInternational University of Health and WelfareCenter for Brain and Cerebral VesselsSanno Hospital and Sanno Medical CenterNaritaJapan
| | - Tamio Teramoto
- Teikyo Academic Research CenterTeikyo UniversityTokyoJapan
| | | | - Tsutomu Yamazaki
- Clinical Research Support CenterCenter for Epidemiology and Preventive MedicineThe University of Tokyo HospitalTokyoJapan
| | - Shinichi Oikawa
- Diabetes and Lifestyle‐related Disease CenterFukujuji HospitalKiyoseJapan
| | - Masahiro Sugawara
- Department of Internal MedicineJapan Physician's AssociationTokyoJapan
| | - Katsuyuki Ando
- Department of Internal MedicineKitamura Memorial ClinicTokyoJapan
| | - Yasuo Ikeda
- Graduate School of Advanced Science and EngineeringWaseda UniversityTokyoJapan
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45
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Sato K, Nakamura K, Suzuki S, Araki M, Dairaku M, Yokoyama K, Akiba M. High Heat Flux Test of CVD-Tungsten Coated Cu Heat Sink Divertor Mock-Up. ACTA ACUST UNITED AC 2018. [DOI: 10.13182/fst96-a11963028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazuyoshi Sato
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Kazuyuki Nakamura
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Satoshi Suzuki
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Masanori Araki
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Masayuki Dairaku
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Kenji Yokoyama
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
| | - Masato Akiba
- Japan Atomic Energy Research Institute 801-1 Mukoyama Naka-machi Naka-gun Ibaraki-ken, 311-01 Japan
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46
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Matsuura T, Iwame T, Suzue N, Iwase J, Tamaki S, Yokoyama K, Sairyo K. Clinical Outcome of Arthroscopic Treatment for Posteromedial Elbow Impingement in Adolescent Baseball Players. Arthroscopy 2018; 34:105-110. [PMID: 28866343 DOI: 10.1016/j.arthro.2017.06.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 06/06/2017] [Accepted: 06/30/2017] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the clinical outcomes of arthroscopic treatment in adolescent baseball players with posteromedial elbow impingement. METHODS This retrospective study evaluated the clinical outcome of arthroscopic treatment for posteromedial elbow impingement in adolescent baseball players. Patients were eligible for participation if they had undergone surgery at least 2 years earlier and excluded if they had arthritis, loose bodies, osteochondritis dissecans, ulnar collateral ligament tear, flexor/pronator injuries or medial epicondylitis, or nerve problems. Patients were also excluded if they had undergone prior elbow surgery, were younger than 13 years, or were older than 19 years. Arthroscopic treatment included debridement of posteromedial synovitis, fragment removal, and olecranon spur excision. At a mean follow-up of 26.7 (range 24-42) months, patients were evaluated based on a questionnaire, examination, and the previously reported elbow outcome score. RESULTS This retrospective study involved 15 male patients, comprising 6 pitchers, 3 catchers, and 6 fielders, of mean age 15.7 (range 14-17) years. Mean time from onset of symptoms to surgery was 4.9 (range 3-18) months. Intraoperative findings included posteromedial synovitis and olecranon spurs in all patients and fragments in 10. The elbow outcome score was considered excellent in 11 patients and good in 2, with a mean score of 92 points (maximum 100 points). The mean postoperative range of motion at the elbow was 5° to 139.7° of flexion. All patients were able to return to their previous level of play after an average of 3.4 (range 2.5-4.5) months. No patient developed medial instability that later required reconstructive surgery. CONCLUSIONS Arthroscopic debridement, excision of the olecranon spur, and removal of fragments yield reliable subjective and objective results and allow a return to baseball in adolescent patients. LEVEL OF EVIDENCE Level IV, therapeutic case series.
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Affiliation(s)
- Tetsuya Matsuura
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan.
| | - Toshiyuki Iwame
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Naoto Suzue
- Department of Orthopaedic Surgery, Tokushima Red Cross Hospital, Tokushima, Japan
| | - Jyoji Iwase
- Department of Orthopaedic Surgery, Kochi Red Cross Hospital, Kochi, Japan
| | - Shunsuke Tamaki
- Department of Orthopaedic Surgery, Shikoku Medical Center for Children and Adults, Kagawa, Japan
| | - Kenji Yokoyama
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
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47
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van Schaik IN, Bril V, van Geloven N, Hartung HP, Lewis RA, Sobue G, Lawo JP, Praus M, Mielke O, Durn BL, Cornblath DR, Merkies ISJ, Sabet A, George K, Roberts L, Carne R, Blum S, Henderson R, Van Damme P, Demeestere J, Larue S, D'Amour C, Bril V, Breiner A, Kunc P, Valis M, Sussova J, Kalous T, Talab R, Bednar M, Toomsoo T, Rubanovits I, Gross-Paju K, Sorro U, Saarela M, Auranen M, Pouget J, Attarian S, Le Masson G, Wielanek-Bachelet A, Desnuelle C, Delmont E, Clavelou P, Aufauvre D, Schmidt J, Zschuentssch J, Sommer C, Kramer D, Hoffmann O, Goerlitz C, Haas J, Chatzopoulos M, Yoon R, Gold R, Berlit P, Jaspert-Grehl A, Liebetanz D, Kutschenko A, Stangel M, Trebst C, Baum P, Bergh F, Klehmet J, Meisel A, Klostermann F, Oechtering J, Lehmann H, Schroeter M, Hagenacker T, Mueller D, Sperfeld A, Bethke F, Drory V, Algom A, Yarnitsky D, Murinson B, Di Muzio A, Ciccocioppo F, Sorbi S, Mata S, Schenone A, Grandis M, Lauria G, Cazzato D, Antonini G, Morino S, Cocito D, Zibetti M, Yokota T, Ohkubo T, Kanda T, Kawai M, Kaida K, Onoue H, Kuwabara S, Mori M, Iijima M, Ohyama K, Baba M, Tomiyama M, Nishiyama K, Akutsu T, Yokoyama K, Kanai K, van Schaik I, Eftimov F, Notermans N, Visser N, Faber C, Hoeijmakers J, Rejdak K, Chyrchel-Paszkiewicz U, Casanovas Pons C, Alberti Aguiló M, Gamez J, Figueras M, Marquez Infante C, Benitez Rivero S, Lunn M, Morrow J, Gosal D, Lavin T, Melamed I, Testori A, Ajroud-Driss S, Menichella D, Simpson E, Chi-Ho Lai E, Dimachkie M, Barohn R, Beydoun S, Johl H, Lange D, Shtilbans A, Muley S, Ladha S, Freimer M, Kissel J, Latov N, Chin R, Ubogu E, Mumfrey S, Rao T, MacDonald P, Sharma K, Gonzalez G, Allen J, Walk D, Hobson-Webb L, Gable K. Subcutaneous immunoglobulin for maintenance treatment in chronic inflammatory demyelinating polyneuropathy (PATH): a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Neurol 2018; 17:35-46. [DOI: 10.1016/s1474-4422(17)30378-2] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/28/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
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48
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Yokoyama K. [Overview]. Rinsho Ketsueki 2018; 59:755. [PMID: 29973456 DOI: 10.11406/rinketsu.59.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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49
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Takamatsu H, Wee RK, Zaimoku Y, Murata R, Zheng J, Moorhead M, Carlton VEH, Kong KA, Takezako N, Ito S, Miyamoto T, Yokoyama K, Matsue K, Sato T, Kurokawa T, Yagi H, Terasaki Y, Ohata K, Matsumoto M, Yoshida T, Faham M, Nakao S. A comparison of minimal residual disease detection in autografts among ASO-qPCR, droplet digital PCR, and next-generation sequencing in patients with multiple myeloma who underwent autologous stem cell transplantation. Br J Haematol 2017; 183:664-668. [PMID: 29270982 DOI: 10.1111/bjh.15002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroyuki Takamatsu
- Haematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Rachel K Wee
- Haematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshitaka Zaimoku
- Haematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Ryoichi Murata
- Division of Internal Medicine, Keiju Kanazawa Hospital, Kanazawa, Japan
| | | | | | | | | | - Naoki Takezako
- Department of Haematology, National Hospital Organization Disaster Medical Centre of Japan, Tachikawa, Japan
| | - Shigeki Ito
- Department of Clinical Oncology, Iwate Medical University School of Medicine, Morioka, Japan
| | - Toshihiro Miyamoto
- Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenji Yokoyama
- Department of Haematology/Oncology, Tokai University Hachioji Hospital, Hachioji, Japan
| | - Kosei Matsue
- Division of Haematology/Oncology, Department of Internal Medicine, Kameda Medical Centre, Kamogawa, Japan
| | - Tsutomu Sato
- Department of Medical Oncology and Haematology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshiro Kurokawa
- Department of Haematology, Toyama Red Cross Hospital, Toyama, Japan
| | - Hideo Yagi
- Department of Haematology, Kinki University School of Medicine Nara Hospital, Ikoma, Japan
| | - Yasushi Terasaki
- Division of Internal Medicine, Toyama City Hospital, Toyama, Japan
| | - Kinya Ohata
- Haematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Morio Matsumoto
- Department of Haematology, National Hospital Organization Shibukawa Medical Center, Shibukawa, Japan
| | - Takashi Yoshida
- Department of Haematology, Shizuoka City Shimizu Hospital, Shizuoka, Japan
| | - Malek Faham
- Adaptive Biotechnologies Corp, Seattle, WA, USA
| | - Shinji Nakao
- Haematology/Respiratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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50
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Matsubara Y, Moriki T, Yokoyama K, Watanabe N, Nakajima H, Handa M, Kawano K, Aoki N, Yoshino H, Ikeda Y, Murata M. A Novel Polymorphism, 70Leu/Phe, Disrupts a Consensus Leu Residue within the Leucine-rich Repeat Sequence of Platelet Glycoprotein Ibα. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryPlatelet glycoprotein (GP) Ib/IX/V complex mediates high-shear dependent platelet activation through an interaction with the von Willebrand factor (vWF). All four subunits of the complex have a structural motif, the leucine-rich repeat (LRR) sequence, with leucines in conserved positions. Here we report a new polymorphism, Leu/Phe at residue 70 of GPIbα, which disrupts the consensus sequence of the LRR in the vWF binding domain. Genotype frequencies among 142 healthy Japanese subjects were 92.3%, 7.7%, and 0.0%, for the 70Leu/Leu, 70Leu/Phe, and 70Phe/Phe genotypes, respectively.Ristocetin-induced or shear-induced platelet aggregation was not significantly different between the 70Leu/Leu and 70Leu/Phe genotypes. In in vitro studies, a recombinant GPIbα fragment with 70Phe (L70F) as compared to that with 70Leu (WT) had low reactivity to anti-GPIbα monoclonal antibodies, GUR20-5 and Hip1, both of which recognize conformation-specific epitopes within the 45-kDa domain. Ristocetininduced 125I-vWF binding to L70F, however, did not differ from that to WT.
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