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Kawamura Y, Itou H, Kida A, Sunakawa H, Suzuki M, Kawamura K. Percutaneous shunt vessel embolisation with Amplatzer vascular plugs II and IV in the treatment of dogs with splenophrenic shunts: four cases (2019-2022). J Small Anim Pract 2023; 64:710-717. [PMID: 37817531 DOI: 10.1111/jsap.13660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 04/23/2023] [Accepted: 06/10/2023] [Indexed: 10/12/2023]
Abstract
OBJECTIVES To describe the treatment of four dogs with splenophrenic shunts using percutaneous shunting vessel embolisation with Amplatzer vascular plugs II and IV and provide information on their clinical outcomes. MATERIALS AND METHODS Dogs with splenophrenic shunts treated at a veterinary hospital from January 2019 to December 2022 were identified through a medical record search. RESULTS Six dogs with splenophrenic shunts were identified. Two dogs were excluded because they were treated with laparoscopic surgery. Four underwent percutaneous shunting vessel embolization with Amplatzer vascular plugs and were included in the case series. A sheath was placed in the left external jugular vein and a balloon catheter was advanced to the shunting vessel under fluoroscopy. Portal vein pressure was confirmed to be within an acceptable range during temporary balloon occlusion. Based on preoperative CT angiography and intraoperative contrast examination, Amplatzer vascular plugs II were selected for two dogs and IV were selected for two dogs. Under fluoroscopy, the plug was deployed into the shunting vessel, and angiography confirmed occlusion. In all cases, the increase in portal pressure after temporary occlusion was within the acceptable range, and complete occlusion of blood flow was possible with a single plug. There were no major procedure-related complications. No dogs developed post-ligation seizures or signs of portal hypertension. In addition, improvements in ammonia values were observed in all cases. CLINICAL SIGNIFICANCE Percutaneous splenophrenic shunt embolisation using Amplatzer vascular plugs II and IV is technically feasible in dogs, and assessed by intra-procedure angiography, a single plug completely obstructed blood flow in all dogs. Based on the literature search, this is the first report describing Amplatzer vascular plugs for the treatment of splenophrenic shunts.
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Affiliation(s)
- Y Kawamura
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
| | - H Itou
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
| | - A Kida
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
| | - H Sunakawa
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
| | - M Suzuki
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
| | - K Kawamura
- Kawamura Animal Hospital, 1-1-6 Kamikido, Higashi-ku, Niigata City, Niigata, 950-0891, Japan
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Nomaru H, Shimizu R, Teranishi K, Asawa Y, Kawamura Y, Hikita A, Hoshi K. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: LABEL-FREE MACHINE VISION-BASED CELL SORTING FOR TISSUE ENGINEERING. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00133-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yamazaki R, Matsukiyo S, Morita T, Tanaka SJ, Umeda T, Aihara K, Edamoto M, Egashira S, Hatsuyama R, Higuchi T, Hihara T, Horie Y, Hoshino M, Ishii A, Ishizaka N, Itadani Y, Izumi T, Kambayashi S, Kakuchi S, Katsuki N, Kawamura R, Kawamura Y, Kisaka S, Kojima T, Konuma A, Kumar R, Minami T, Miyata I, Moritaka T, Murakami Y, Nagashima K, Nakagawa Y, Nishimoto T, Nishioka Y, Ohira Y, Ohnishi N, Ota M, Ozaki N, Sano T, Sakai K, Sei S, Shiota J, Shoji Y, Sugiyama K, Suzuki D, Takagi M, Toda H, Tomita S, Tomiya S, Yoneda H, Takezaki T, Tomita K, Kuramitsu Y, Sakawa Y. High-power laser experiment forming a supercritical collisionless shock in a magnetized uniform plasma at rest. Phys Rev E 2022; 105:025203. [PMID: 35291161 DOI: 10.1103/physreve.105.025203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
We present an experimental method to generate quasiperpendicular supercritical magnetized collisionless shocks. In our experiment, ambient nitrogen (N) plasma is at rest and well magnetized, and it has uniform mass density. The plasma is pushed by laser-driven ablation aluminum (Al) plasma. Streaked optical pyrometry and spatially resolved laser collective Thomson scattering clarify structures of plasma density and temperatures, which are compared with one-dimensional particle-in-cell simulations. It is indicated that just after the laser irradiation, the Al plasma is magnetized by a self-generated Biermann battery field, and the plasma slaps the incident N plasma. The compressed external field in the N plasma reflects N ions, leading to counterstreaming magnetized N flows. Namely, we identify the edge of the reflected N ions. Such interacting plasmas form a magnetized collisionless shock.
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Affiliation(s)
- R Yamazaki
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
- Institute of Laser Engineering, Osaka University, 2-6, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - S Matsukiyo
- Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - T Morita
- Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - S J Tanaka
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - T Umeda
- Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - K Aihara
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - M Edamoto
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - S Egashira
- Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043, Japan
| | - R Hatsuyama
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - T Higuchi
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - T Hihara
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Y Horie
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - M Hoshino
- Department of Earth and Planetary Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - A Ishii
- Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - N Ishizaka
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - Y Itadani
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - T Izumi
- Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043, Japan
| | - S Kambayashi
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - S Kakuchi
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - N Katsuki
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - R Kawamura
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - Y Kawamura
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - S Kisaka
- Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - T Kojima
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - A Konuma
- Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - R Kumar
- Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043, Japan
| | - T Minami
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - I Miyata
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - T Moritaka
- Fundamental Physics Simulation Research Division, National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
| | - Y Murakami
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - K Nagashima
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - Y Nakagawa
- Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043, Japan
| | - T Nishimoto
- School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Y Nishioka
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - Y Ohira
- Department of Earth and Planetary Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Ohnishi
- Department of Aerospace Engineering, Tohoku University, 6-6 Aramaki Aza Aoba, Aoba, Sendai, Miyagi 980-8579, Japan
| | - M Ota
- Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043, Japan
| | - N Ozaki
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - T Sano
- Institute of Laser Engineering, Osaka University, 2-6, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - K Sakai
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - S Sei
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - J Shiota
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - Y Shoji
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - K Sugiyama
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - D Suzuki
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - M Takagi
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
| | - H Toda
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - S Tomita
- Astronomical Institute, Tohoku University, 6-3 Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - S Tomiya
- Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 252-5258, Japan
| | - H Yoneda
- Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - T Takezaki
- Department of Creative Engineering, National Institute of Technology, Kitakyushu College, 5-20-1 Shii, Kokuraminamiku, Kitakyushu, Fukuoka 802-0985, Japan
- Faculty of Engineering, University of Toyama, 3190, Gofuku, Toyama 930-8555, Japan
| | - K Tomita
- Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
- Division of Quantum Science and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Y Kuramitsu
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Y Sakawa
- Institute of Laser Engineering, Osaka University, 2-6, Yamadaoka, Suita, Osaka 565-0871, Japan
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Ishii Y, Aiba N, Ando M, Asakura N, Bierwage A, Cara P, Dzitko H, Edao Y, Gex D, Hasegawa K, Hayashi T, Hiwatari R, Hoshino T, Ikeda Y, Ishida S, Isobe K, Iwai Y, Jokinen A, Kasugai A, Kawamura Y, Kim JH, Kondo K, Kwon S, Lorenzo SC, Masuda K, Matsuyama A, Miyato N, Morishita K, Nakajima M, Nakajima N, Nakamichi M, Nozawa T, Ochiai K, Ohta M, Oyaidzu M, Ozeki T, Sakamoto K, Sakamoto Y, Sato S, Seto H, Shiroto T, Someya Y, Sugimoto M, Tanigawa H, Tokunaga S, Utoh H, Wang W, Watanabe Y, Yagi M. R&D Activities for Fusion DEMO in the QST Rokkasho Fusion Institute. Fusion Science and Technology 2021. [DOI: 10.1080/15361055.2021.1925030] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Y. Ishii
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Aiba
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - M. Ando
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Asakura
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - A. Bierwage
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - P. Cara
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - H. Dzitko
- Fusion for Energy, Broader Approach, Garching, Germany
| | | | - D. Gex
- Fusion for Energy, Broader Approach, Garching, Germany
| | - K. Hasegawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hayashi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - R. Hiwatari
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hoshino
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Ikeda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Ishida
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Isobe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Iwai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Jokinen
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - A. Kasugai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Kawamura
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - J. H. Kim
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Kondo
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Kwon
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. C. Lorenzo
- Fusion for Energy, Broader Approach, Barcelona, Spain
| | - K. Masuda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Matsuyama
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Miyato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Morishita
- Kyoto University, Institute of Advanced Energy, Uji, Japan
| | - M. Nakajima
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Nakajima
- National Institute for Fusion Science, Department of Helical Plasma Research Rokkasho Research Center, Rokkasho-Vill., Japan
| | - M. Nakamichi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Nozawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Ochiai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Ohta
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Oyaidzu
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Ozeki
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - K. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Sato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Seto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Shiroto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Someya
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Sugimoto
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - H. Tanigawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Tokunaga
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Utoh
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - W. Wang
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Watanabe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Yagi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
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Murtada SI, Kawamura Y, Weiss D, Humphrey JD. Differential biomechanical responses of elastic and muscular arteries to angiotensin II-induced hypertension. J Biomech 2021; 119:110297. [PMID: 33647550 DOI: 10.1016/j.jbiomech.2021.110297] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 01/15/2021] [Accepted: 01/23/2021] [Indexed: 12/23/2022]
Abstract
Elastic and muscular arteries are distinguished by their distinct microstructures, biomechanical properties, and smooth muscle cell contractile functions. They also exhibit differential remodeling in aging and hypertension. Although regional differences in biomechanical properties have been compared, few studies have quantified biaxial differences in response to hypertension. Here, we contrast passive and active changes in large elastic and medium- and small-sized muscular arteries in adult mice in response to chronic infusion of angiotensin over 14 days. We found a significant increase in wall thickness, both medial and adventitial, in the descending thoracic aorta that associated with trends of an increased collagen:elastin ratio. There was adventitial thickening in the small-sized mesenteric artery, but also significant changes in elastic lamellar structure and contractility. An increased contractile response to phenylephrine coupled with a reduced vasodilatory response to acetylcholine in the mesenteric artery suggested an increased contractile state in response to hypertension. Overall reductions in the calculated gradients in pulse wave velocity and elastin energy storage capability from elastic-to-muscular arteries suggested a possible transfer of excessive pulsatile energy into the small-sized muscular arteries resulting in significant functional consequences in response to hypertension.
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Affiliation(s)
- S-I Murtada
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA.
| | - Y Kawamura
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - D Weiss
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - J D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA; Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA
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Kawamura Y, Murtada SI, Gao F, Liu X, Tellides G, Humphrey JD. Adventitial remodeling protects against aortic rupture following late smooth muscle-specific disruption of TGFβ signaling. J Mech Behav Biomed Mater 2021; 116:104264. [PMID: 33508556 DOI: 10.1016/j.jmbbm.2020.104264] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 08/10/2020] [Revised: 11/21/2020] [Accepted: 12/09/2020] [Indexed: 01/30/2023]
Abstract
Altered signaling through transforming growth factor-beta (TGFβ) increases the risk of aortic dissection in patients, which has been confirmed in mouse models. It is well known that altered TGFβ signaling affects matrix turnover, but there has not been a careful examination of associated changes in structure-function relations. In this paper, we present new findings on the rupture potential of the aortic wall following late postnatal smooth muscle cell (SMC)-specific disruption of type I and II TGFβ receptors in a mouse model with demonstrated dissection susceptibility. Using a combination of custom computer-controlled biaxial tests and quantitative histology and immunohistochemistry, we found that loss of TGFβ signaling in SMCs compromises medial properties but induces compensatory changes in the adventitia that preserve wall strength above that which is needed to resist in vivo values of wall stress. These findings emphasize the different structural defects that lead to aortic dissection and rupture - compromised medial integrity and insufficient adventitial strength, respectively. Relative differences in these two defects, in an individual subject at a particular time, likely reflects the considerable phenotypic diversity that is common in clinical presentations of thoracic aortic dissection and rupture. There is, therefore, a need to move beyond examinations of bulk biological assays and wall properties to cell- and layer-specific studies that delineate pathologic and compensatory changes in wall biology and composition, and thus the structural integrity of the aortic wall that can dictate differences between life and death.
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Affiliation(s)
- Y Kawamura
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, USA; Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - S-I Murtada
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - F Gao
- Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - X Liu
- Department of Cell Biology, Yale School of Medicine, New Haven, CT, USA
| | - G Tellides
- Department of Surgery, Yale School of Medicine, New Haven, CT, USA; Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA
| | - J D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA; Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA.
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Shibutani S, Yonekura M, Nosaka M, Kawamura Y, Hanada K, Kasai S, Yokota T, Higuma T, Itoh K, Tomita H. Characterizing genetic variants for DAG and IP3 signalling pathways in severe cases of coronary spastic angina. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
We previously reported that the activity of phospholipase C (PLC), a key molecule for intracellular calcium signaling, was enhanced in patients with coronary spastic angina (CSA). Furthermore, we found PLC-δ1 864 G to A mutation in about 10% of the male CSA patients. However, comprehensive understanding of genetic role in the pathogenesis of CSA remains to be elucidated.
Purpose
We tested the hypothesis that variants in the genes responsible for contraction signaling, especially a Ca2+-dependent mechanism, plays an important role in the pathogenesis of CSA.
Methods and results
Exome sequencing was performed to genotype comprehensively CSA cohort, enabling investigation of 258 gene network for diacylglycerol (DAG) and inositol trisphosphate (IP3) signallings, which are responsible for contraction signaling in the vascular smooth muscle cell (VSMC) by a Ca2+-dependent mechanism.
The study population included 30 Japanese patients with severe cases of CSA (18 men and 12 women with a mean age of 62.2±10.1 years). In 23 patients, ST segment elevation was recorded on the electrocardiogram during a spontaneous attack. In other 3 patients, ventricular fibrillation occurred following CSA attacks. The rests were diagnosed by ECG changes and elevated cardiac enzymes following CSA attacks. Genetic information from these CSA patients were compared with those from 914 healthy controls.
Frequencies of 17 common, functional polymorphisms of DAG and IP3 signallings were statistically similar to those of healthy controls. By high-quality (Call Quality ≥20, Read Depth ≥10), and predicted-deleterious (CADD score ≥20) filterings, the number of the candidate genes were narrowed from 234,445 to 17,738, and by selecting genes for DAG and IP3 signallings, further narrowed to 208 genes. Compared with 914 healthy controls, DAG and IP3 signalling genes revealed 26 variants in 15 genes in CSA cases, and by further filtering for rare (914 healthy control frequency <1%), 21 variants in 12 genes were found. They shared variants in G protein subunit alpha q (GNAQ), phospholipase C beta 3 (PLCB3), inositol 1,4,5-trisphosphate receptor type 3 (ITPR3), glutamate ionotropic receptor NMDA type subunit 2D (GRIN2D) in ≥5 cases. By filtering for high-quality, predicted-deleterious, and rare, genetic variants related with DAG and IP3 signalling were more found in severe CSA patients compared with healthy controls (CSA 4.33/person vs healthy controls 2.60 /person).
Conclusions
These findings indicate genetic heterogeneity in CSA susceptibility and a likely polygenic basis, giving a cumulative effect on DAG and IP3 signalling pathways in a subset of individual CSA patients. Study of larger cohorts is warranted to define genetic risk factors for CSA.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Shibutani
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Yonekura
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Nosaka
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Y Kawamura
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - K Hanada
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - S Kasai
- Hirosaki University, Stress Response Science, Hirosaki, Japan
| | - T Yokota
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Higuma
- St. Marianna University School of Medicine, Cardiology, Kawasaki, Japan
| | - K Itoh
- Hirosaki University, Stress Response Science, Hirosaki, Japan
| | - H Tomita
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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8
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Yokono Y, Hanada K, Narita M, Tatara Y, Kawamura Y, Miura N, Kitayama K, Nakata M, Nozaka M, Kato T, Kudo N, Tsushima M, Toyama Y, Itoh K, Tomita H. Blockade of PAR-1 Signaling Attenuates Cardiac Hypertrophy and Fibrosis in Renin-Overexpressing Hypertensive Mice. J Am Heart Assoc 2020; 9:e015616. [PMID: 32495720 PMCID: PMC7429042 DOI: 10.1161/jaha.119.015616] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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] [Indexed: 12/13/2022]
Abstract
Background Although PAR‐1 (protease‐activated receptor‐1) exerts important functions in the pathophysiology of the cardiovascular system, the role of PAR‐1 signaling in heart failure development remains largely unknown. We tested the hypothesis that PAR‐1 signaling inhibition has protective effects on the progression of cardiac remodeling induced by chronic renin–angiotensin system activation using renin‐overexpressing hypertensive (Ren‐Tg) mice. Methods and Results We treated 12‐ to 16‐week‐old male wild‐type (WT) mice and Ren‐Tg mice with continuous subcutaneous infusion of the PAR‐1 antagonist SCH79797 or vehicle for 4 weeks. The thicknesses of interventricular septum and the left ventricular posterior wall were greater in Ren‐Tg mice than in WT mice, and SCH79797 treatment significantly decreased these thicknesses in Ren‐Tg mice. The cardiac fibrosis area and monocyte/macrophage deposition were greater in Ren‐Tg mice than in WT mice, and both conditions were attenuated by SCH79797 treatment. Cardiac mRNA expression levels of PAR‐1, TNF‐α (tumor necrosis factor‐α), TGF‐β1 (transforming growth factor‐β1), and COL3A1 (collagen type 3 α1 chain) and the ratio of β‐myosin heavy chain (β‐MHC) to α‐MHC were all greater in Ren‐Tg mice than in WT mice; SCH79797 treatment attenuated these increases in Ren‐Tg mice. Prothrombin fragment 1+2 concentration and factor Xa in plasma were greater in Ren‐Tg mice than in WT mice, and both conditions were unaffected by SCH79797 treatment. In isolated cardiac fibroblasts, both thrombin and factor Xa enhanced ERK1/2 (extracellular signal‐regulated kinase 1/2) phosphorylation, and SCH79797 pretreatment abolished this enhancement. Furthermore, gene expression of PAR‐1, TGF‐β1, and COL3A1 were enhanced by factor Xa, and all were inhibited by SCH79797. Conclusions The results indicate that PAR‐1 signaling is involved in cardiac remodeling induced by renin–angiotensin system activation, which may provide a novel therapeutic target for heart failure.
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Affiliation(s)
- Yoshikazu Yokono
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Kenji Hanada
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Masato Narita
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Yota Tatara
- Department of Glycotechnology Center for Advanced Medical Research Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Yousuke Kawamura
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Naotake Miura
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Kazutaka Kitayama
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Masamichi Nakata
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Masashi Nozaka
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Tomo Kato
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Natsumi Kudo
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Michiko Tsushima
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Yuichi Toyama
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Ken Itoh
- Department of Stress Response Science Center for Advanced Medical Research Hirosaki University Graduate School of Medicine Hirosaki Japan
| | - Hirofumi Tomita
- Department of Cardiology and Nephrology Hirosaki University Graduate School of Medicine Hirosaki Japan
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9
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Murtada SI, Kawamura Y, Caulk AW, Ahmadzadeh H, Mikush N, Zimmerman K, Kavanagh D, Weiss D, Latorre M, Zhuang ZW, Shadel GS, Braddock DT, Humphrey JD. Paradoxical aortic stiffening and subsequent cardiac dysfunction in Hutchinson-Gilford progeria syndrome. J R Soc Interface 2020; 17:20200066. [PMID: 32453981 DOI: 10.1098/rsif.2020.0066] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hutchinson-Gilford progeria syndrome (HGPS) is an ultra-rare disorder with devastating sequelae resulting in early death, presently thought to stem primarily from cardiovascular events. We analyse novel longitudinal cardiovascular data from a mouse model of HGPS (LmnaG609G/G609G) using allometric scaling, biomechanical phenotyping, and advanced computational modelling and show that late-stage diastolic dysfunction, with preserved systolic function, emerges with an increase in the pulse wave velocity and an associated loss of aortic function, independent of sex. Specifically, there is a dramatic late-stage loss of smooth muscle function and cells and an excessive accumulation of proteoglycans along the aorta, which result in a loss of biomechanical function (contractility and elastic energy storage) and a marked structural stiffening despite a distinctly low intrinsic material stiffness that is consistent with the lack of functional lamin A. Importantly, the vascular function appears to arise normally from the low-stress environment of development, only to succumb progressively to pressure-related effects of the lamin A mutation and become extreme in the peri-morbid period. Because the dramatic life-threatening aortic phenotype manifests during the last third of life there may be a therapeutic window in maturity that could alleviate concerns with therapies administered during early periods of arterial development.
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Affiliation(s)
- S-I Murtada
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Y Kawamura
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - A W Caulk
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - H Ahmadzadeh
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - N Mikush
- Translational Research Imaging Center, Yale School of Medicine, New Haven, CT, USA
| | - K Zimmerman
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - D Kavanagh
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - D Weiss
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - M Latorre
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Z W Zhuang
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, USA
| | - G S Shadel
- Molecular and Cellular Biology, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - D T Braddock
- Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - J D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA.,Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA
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10
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Kawamura Y. Mechanical feedback cooling assisted by optical cavity cooling of the thermal vibration of a microcantilever. Sci Rep 2019; 9:19094. [PMID: 31836770 PMCID: PMC6910902 DOI: 10.1038/s41598-019-55496-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 11/22/2019] [Indexed: 11/15/2022] Open
Abstract
This study describes a new two-step process to cool the thermal vibration of microcantilevers. The process combines active mechanical feedback cooling and optical cavity cooling. A micro-Fabry–Perot interferometer, built in-house, is set atop a microcantilever to measure the vibration amplitude, the high optical power density of which induces cavity cooling in the optical cavity. Using a two-step cooling procedure, the equivalent temperature of the thermal vibration of a microcantilever is lowered from room temperature to the theoretical cooling limit of 0.063 K, a much lower temperature than that achieved via simple cavity cooling (18 K), and then by mechanical feedback cooling (0.135 K) obtained for the same type of microcantilevers in previous studies. This experimental demonstration showcases a new type of cooling process of the amplitude of thermal vibration for micro-mechanical resonators to a lower temperature and does not need additional cooling using a conventional cryogenic refrigerator.
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11
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Kiyokawa H, Mogami H, Ueda Y, Kawamura Y, Sato M, Chigusa Y, Kondoh E, Mandai M. Glucocorticoid Weakens Fetal Membranes via IL-1B Production by Amniotic Fluid Macrophage. Placenta 2019. [DOI: 10.1016/j.placenta.2019.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Kawamura Y, Yoshimachi F, Nakamura N, Minakawa S, Yamamoto Y, Morita N, Kobayashi Y. P838Is multi-biomarker combination approach comparable to the GRACE risk score for short-term mortality prediction in acute myocardial infarction cases? Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
The Global Registry of Acute Coronary Events (GRACE) score is said to be a superior predictor of mortality in acute myocardial infarction (AMI) patients, and same applies to biochemical parameters as N-terminal pro-B-type natriuretic peptide (N-BNP), Troponin-T (TnT) and high-sensitivity C- reactive protein (hs-CRP) levels.
Purpose
We validated that whether each or combination of biochemical parameters are comparable to GRACE score or not for mortality prediction in AMI patients.
Method
We investigated about clinical background including The GRACE score, above parameters and in-hospital mortality in 754 AMI patients (mean age 66±13y/o, 609 ST-elevated AMI cases) received emergency percutaneous coronary intervention (PCI) successfully during 8 years in a single center retrospectively. Combination of biochemical parameters are derived from N-BNP, TnT and hs-CRP by logistic regression analyses. We compared The GRACE score with each or combination of biochemical parameters between survival (SG) and non-survival group (nSG) on receiver operating characteristic (ROC) analysis.
Result
In-hospital mortality was 6.8%. The GRACE score (106±33 versus 161±32; p<0.005) and N-BNP level (2458±7058 versus 8880±11331pg/ml; p<0.005) were significantly lower in SG than nSG. Area under the ROC curve about in-hospital mortality of The GRACE score were higher (0.868) than N-BNP (0.787; p=0.007), TnT (0.613; p<0.005), hs-CRP levels (0.614; p<0.005) and multi-biomarker combination (0.742; p=0.016) as Figure 1.
Area under the curve of the composite with the GRACE score and multi-biomarker is not increased compared with the GRACE score alone (0.868 versus 0.865; p=n.s.).
Figure 1
Conclusion
The GRACE score is a superior predictor about in-hospital mortality than each or combination of biochemical parameters in AMI patients. Multi-biomarker combination dose not refine the accuracy of the GRACE score.
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Affiliation(s)
- Y Kawamura
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - F Yoshimachi
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - N Nakamura
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - S Minakawa
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - Y Yamamoto
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - N Morita
- Tokai University Hachioji Hospital, Hachioji, Japan
| | - Y Kobayashi
- Tokai University Hachioji Hospital, Hachioji, Japan
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13
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Yokono Y, Narita M, Kawamura Y, Kato T, Kudo N, Tsushima M, Toyama Y, Hanada K, Shimada M, Makoto T, Osanai T, Tomita H. P1624Blockade of protease activated receptor-1 signaling attenuates cardiac hypertrophy and fibrosis in renin-overexpressing hypertensive mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Recent evidences have demonstrated that coagulation pathway is involved in cardiovascular remodeling induced by renin-angiotensin system (RAS), which finally leads to heart failure. Protease activated receptor-1 (PAR-1) is widely expressed in the vasculature and the heart, and plays important roles in pro-inflammatory process in the cardiovascular system. Recently, we demonstrated that the activity of factor Xa (FXa), which functions not only as a coagulation factor but as an agonist for PAR-1, was enhanced in renin-overexpressing hypertensive mice (Ren-Tg).
Purpose
The purpose of this study was to investigate whether inhibition of PAR-1 signaling has protective effects on the progression of heart failure induced by chronic RAS activation in Ren-Tg.
Methods and results
We treated 12–16 weeks-old male wild type mice (WT) and Ren-Tg with continuous subcutaneous infusion of PAR-1 antagonist SCH79797 (25mg/kg/day) or vehicle for 4 weeks. After treatment period, left ventricular (LV) wall thickness calculated as interventricular septum plus posterior wall thickness measured by echocardiography was greater in Ren-Tg than in WT (0.25±0.003 versus 0.18±0.002 mm), and SCH79797 attenuated the increase to 0.22±0.01 mm in Ren-Tg (both p<0.05, respectively). The ratio of heart weight to body weight was greater in Ren-Tg than in WT (6.1±0.4 versus 4.6±0.7 mg/g), and SCH79797 attenuated the increase to 5.2±0.1 mg/g (both p<0.05). The area of cardiac fibrosis evaluated by Masson-trichrome staining was greater in Ren-Tg than in WT (2.6±0.2 versus 1.4±0.3%), and SCH79797 attenuated it to 1.6±0.3% in Ren-Tg (both p<0.05). Cardiac mRNA expressions of tumor necrosis factor-α, transforming growth factor-β1, and β-myosin heavy chain were all greater in Ren-Tg than in WT, and SCH79797 attenuated the increases in Ren-Tg (all p<0.05).
Conclusions
Inhibition of PAR-1 signaling attenuates cardiac hypertrophy and fibrosis in Ren-Tg via inhibition of inflammatory cytokines production. These results support the involvement of PAR signaling in the development of heart failure induced by RAS, and may provide novel therapeutic insights for the treatment of hypertensive heart failure.
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Affiliation(s)
- Y Yokono
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Narita
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Y Kawamura
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Kato
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - N Kudo
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Tsushima
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Y Toyama
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - K Hanada
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Shimada
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Makoto
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Osanai
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - H Tomita
- Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Nakashima H, Tabira T, Kawamura N, Kawamura M, Kawamura Y. Effectiveness of rehabilitation on the cognitive function impairment in CVD patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2160] [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]
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15
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Takahashi H, Okamoto A, Kawamura Y, Kumagai T, Daibo A, Kitajima S. Line Spectra Observation of the Rydberg Helium Atoms due to Volumetric Recombination in the RF Plasma Source DT-ALPHA. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Takahashi
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
| | - A. Okamoto
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
| | - Y. Kawamura
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
| | - T. Kumagai
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
| | - A. Daibo
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
| | - S. Kitajima
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai 980-8579, Japan
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16
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Kato M, Itoh T, Sugai H, Kawamura Y, Hayashi T, Nishi M, Tanasec M, Matsuzaki T, Ishida K, Nagamine K. Development of Electrochemical Hydrogen Pump Under Vacuum Condition for a Compact Tritium Gas Recycling System. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a22707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Kato
- Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Naka, Ibaraki 319-1195, Japan
| | - T Itoh
- KAKEN Co., 1044 Horimachi, Mito, Ibaraki 310-0903, Japan
| | - H. Sugai
- Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Naka, Ibaraki 319-1195, Japan
| | - Y Kawamura
- Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Naka, Ibaraki 319-1195, Japan
| | - T. Hayashi
- Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Naka, Ibaraki 319-1195, Japan
| | - M. Nishi
- Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Naka, Ibaraki 319-1195, Japan
| | - M. Tanasec
- Department of Radiation Research for Environmental and Resources, Takasaki Institute, JAERI, Takasaki, Gunma 370-1292, Japan
| | - T. Matsuzaki
- Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-0198, Japan
| | - K. Ishida
- Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-0198, Japan
| | - K. Nagamine
- Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-0198, Japan
- Meson Science Laboratory, Institute of Material Structure Science, High Energy Accelerator Research Organization (KEK-MSL), Oho, Tsukuba, Ibaraki 305-0801, Japan
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17
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Kakuta T, Hirata S, Mori S, Konishi S, Kawamura Y, Nishi M, Ohara Y. Conceptual Design of the Blanket Tritium Recovery System for the Prototype Fusion Reactor. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a22748] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Kakuta
- Kawasaki Heavy Industries, LTD., Minamisuna 2-6-5, Koto-ku, Tokyo 136-8588, Japan +81-33615-5148
| | - S. Hirata
- Kawasaki Heavy Industries, LTD., Minamisuna 2-6-5, Koto-ku, Tokyo 136-8588, Japan +81-33615-5148
| | - S. Mori
- Kawasaki Heavy Industries, LTD., Minamisuna 2-6-5, Koto-ku, Tokyo 136-8588, Japan +81-33615-5148
| | - S. Konishi
- Japan Atomic Eneigy Research Institute, Mukoyama 801 -1, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan +81-29270-7520
| | - Y. Kawamura
- Japan Atomic Eneigy Research Institute, Mukoyama 801 -1, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan +81-29270-7520
| | - M. Nishi
- Japan Atomic Eneigy Research Institute, Mukoyama 801 -1, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan +81-29270-7520
| | - Y. Ohara
- Japan Atomic Eneigy Research Institute, Mukoyama 801 -1, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan +81-29270-7520
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Kawamura Y, Oguri M, Takahara K, Takikawa T, Mori H, Ohguchi S, Sumi T, Ishii H, Murohara T. P3369Impact of optimal medical therapy on one-year outcomes in acute decompensated heart failure in Japan. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Takikawa T, Sumi T, Takahara K, Mori H, Kawamura Y, Ohguchi S, Oguri M, Ishii H, Murohara T. P5133The prognostic importance of multiple nutrition screening indexes for 1-year mortality in patients hospitalized for acute decompensated heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Takikawa T, Sumi T, Takahara K, Mori H, Kawamura Y, Ohguchi S, Oguri M, Ishii H, Murohara T. P3397Prognostic utility of multipoint nutritional screening in hospitalized patients with acute decompensated heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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21
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Sakamoto N, Otsu K, Sekiguchi Y, Sugiyama E, Tanabe Y, Sato N, Kawamura Y, Nogami A, Aonuma K, Hasebe N. P1627Successful bipolar ablation for hypertrophic cardiomyopathy-related ventricular tachycardia with deep intramural circuits. Europace 2017. [DOI: 10.1093/ehjci/eux158.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Talib A, Sato N, Takeuchi T, Kowase S, Kurosaki K, Kawamura Y, Aonuma K, Nogami A, Hasebe N. P458Neuro-modulatory provocation test to unmask early repolarization syndrome and ventricular fibrillation triggering ectopic : implications for diagnosis and ablation. Europace 2017. [DOI: 10.1093/ehjci/eux141.181] [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: 11/12/2022] Open
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Talib A, Sato N, Sugiyama E, Sakamoto N, Tanabe Y, Kawamura Y, Hasebe N. P459Insight into site-specificity of J wave arrhythmogenesis: results of 12-lead based T-wave alternans analysis. Europace 2017. [DOI: 10.1093/ehjci/eux141.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hayashi T, Isobe K, Kobayashi K, Iwai Y, Kawamura Y, Nakamura H, Shu WM, Arita T, Hoshi S, Suzuki T, Yamada M, Yamanishi T. Recent Activities on Tritium Technologies for ITER and Fusion Reactors at JAEA. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1563] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Hayashi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - K. Isobe
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - K. Kobayashi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - Y. Iwai
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - Y. Kawamura
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - H. Nakamura
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - W. M. Shu
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - T. Arita
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - S. Hoshi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - T. Suzuki
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - M. Yamada
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - T. Yamanishi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Toka-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
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Hayashi T, Kobayashi K, Iwai Y, Isobe K, Nakamura H, Kawamura Y, Shu W, Suzuki T, Yamada M, Yamanishi T. Tritium Safety Study Using Caisson Assembly (CATS) at TPL/JAEA. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1822] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Hayashi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - K. Kobayashi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - Y. Iwai
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - K. Isobe
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - H. Nakamura
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - Y Kawamura
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - W. Shu
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - T. Suzuki
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - M. Yamada
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
| | - T. Yamanishi
- Tritium Technology Group, Directorates of Fusion Energy Research, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki pref., 319-1195 JAPAN
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Suhara R, Nkuni T, Kawamura Y. International Association for Dental Research Abstracts of Papers Presented at the Eleventh Annual Meeting of the Japanese Division. J Dent Res 2016. [DOI: 10.1177/00220345640430052401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
The interdental dimension discrimination (IDD) ability and the swallowing threshold were evaluated at the sitting and supine positions. The difference in the magnitude of mis-estimation of IDD and that in the swallowing threshold between the two positions was significantly correlated. These results indicate some influence of the IDD in the determination of the swallowing threshold.
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Affiliation(s)
- T. Takahashi
- Department of Oral Physiology, Dental School, Osaka University, 348 Nakanoshima, 4-chome, Kitaku, Osaka 530, Japan
| | - T. Morimoto
- Department of Oral Physiology, Dental School, Osaka University, 348 Nakanoshima, 4-chome, Kitaku, Osaka 530, Japan
| | - S. Azuma
- Department of Oral Physiology, Dental School, Osaka University, 348 Nakanoshima, 4-chome, Kitaku, Osaka 530, Japan
| | - Y. Kawamura
- Department of Oral Physiology, Dental School, Osaka University, 348 Nakanoshima, 4-chome, Kitaku, Osaka 530, Japan
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van der Laan J, Canas D, Chaudhari V, Iseli M, Kawamura Y, Lee D, Petit P, Pitcher C, Torcy D, Ugolini D, Zhang H. Radwaste management aspects of the test blanket systems in ITER. Fusion Engineering and Design 2016. [DOI: 10.1016/j.fusengdes.2016.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Ten temporomandibular joints (TMJs) of 5 healthy volunteers and 19 TMJs of internal derangements in 16 patients with splint therapy were examined with MR imaging. T1-weighted images were obtained only in the closed mouth position, and gradient recalled acquisition in steady state (GRASS) images were obtained in active opening and closing phases, allowing a pseudodynamic display of TMJ movement. All patients received protrusive splint treatment. The usefulness of MR imaging to assess the efficacy of splint therapy was evaluated. Corrected disk position with the splint in place was clearly demonstrated in 9 TMJs, corresponding with elimination of reciprocal clicking. Ten other TMJs of anterior disk displacement without reduction showed uncorrected disk position by the splint. This information could confirm the therapeutic efficacy, or suggest other treatment alternatives. GRASS MR imaging can provide accurate and physiologic information about disk function in initial and follow-up assessment of protrusive splint therapy.
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Fujita N, Yamashita K, Matsushita M, Yamasaki M, Kawamura Y, Abe E. B22-P-12A Novel Long-Period Structure Formed in a High-Pressure Synthesized Mg-Zn-Yb Alloy. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv268] [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: 11/12/2022] Open
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32
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Matsuo H, Tomiyama H, Satake W, Chiba T, Onoue H, Kawamura Y, Nakayama A, Sakiyama M, Funayama M, Nishioka K, Shimizu T, Kaida K, Kamakura K, Toda T, Hattori N, Shinomiya N. Onset age of Parkinson’s disease is delayed by a common dysfunctional variant of ABCG2, a major causative gene for early-onset gout. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.977] [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: 12/01/2022]
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Edao Y, Kawamura Y, Kurata R, Fukada S, Takeishi T, Hayashi T, Yamanishi T. Measurement of Tritium Penetration through Concrete Material Covered by Various Paints Coating. Fusion Science and Technology 2015. [DOI: 10.13182/fst14-t20] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Edao
- Tritium Technology Group, Fusion Research and Development Directorate, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Y. Kawamura
- Tritium Technology Group, Fusion Research and Development Directorate, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - R. Kurata
- Tritium Technology Group, Fusion Research and Development Directorate, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - S. Fukada
- Department of Advanced Energy Engineering Science, Kyushu University, 6-1 Kasuga-kouen Kasuga, Fukuoka 816-8580, Japan
| | - T. Takeishi
- Department of Advanced Energy Engineering Science, Kyushu University, 6-1 Kasuga-kouen Kasuga, Fukuoka 816-8580, Japan
| | - T. Hayashi
- Tritium Technology Group, Fusion Research and Development Directorate, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - T. Yamanishi
- Tritium Technology Group, Fusion Research and Development Directorate, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
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Fukada S, Katayama K, Takeishi T, Edao Y, Kawamura Y, Hayashi T, Yamanishi T. Correlation of Rates of Tritium Migration through Porous Concrete. Fusion Science and Technology 2015. [DOI: 10.13182/fst14-t25] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satoshi Fukada
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. Katayama
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - T. Takeishi
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Y. Edao
- JAEA-TPL, Muramatsu, Tokai-mura, Nakagun, Ibaraki, 319-1184, Japan
| | - Y. Kawamura
- JAEA-TPL, Muramatsu, Tokai-mura, Nakagun, Ibaraki, 319-1184, Japan
| | - T. Hayashi
- JAEA-TPL, Muramatsu, Tokai-mura, Nakagun, Ibaraki, 319-1184, Japan
| | - T. Yamanishi
- JAEA-TPL, Muramatsu, Tokai-mura, Nakagun, Ibaraki, 319-1184, Japan
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36
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Nitta R, Kawamura Y, Kaneko S, Okuma S. Reversible to Irreversible Flow Transition of Periodically Driven Vortices in the Strip Sample. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.phpro.2015.05.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Hara T, Suzuki F, Kawamura Y, Sezaki H, Hosaka T, Akuta N, Kobayashi M, Suzuki Y, Saitoh S, Arase Y, Ikeda K, Kobayashi M, Watahiki S, Mineta R, Kumada H. Long-term entecavir therapy results in falls in serum hepatitis B surface antigen levels and seroclearance in nucleos(t)ide-naïve chronic hepatitis B patients. J Viral Hepat 2014; 21:802-8. [PMID: 25274427 DOI: 10.1111/jvh.12211] [Citation(s) in RCA: 17] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 10/08/2013] [Indexed: 12/12/2022]
Abstract
Entecavir (ETV) is reported to result in suppression of hepatitis B virus DNA (HBV DNA) replication with minimal drug resistance. However, information on the long-term effect of such therapy on serum hepatitis B surface antigen (HBsAg) level and elimination of HBsAg is not available. ETV therapy was started in 553 nucleos(t)ide-naïve patients with chronic hepatitis B infection (HBeAg positive: 45%) in our hospital. Serum HBsAg levels were measured serially by the Architect assay. The median baseline HBsAg was 2180 IU/mL (0.12-243 000 IU/mL), and median follow-up period was 3.0 years, with 529, 475, 355, 247 and 163 patients followed-up for 1, 2, 3, 4 and 5 years, respectively. At year 5, the mean log HBsAg decline from baseline was -0.48 log IU/mL, and the cumulative HBsAg clearance rate was 3.5%. Multivariate analysis identified HBV DNA level at baseline (<3.0 log copies IU/mL, odd ratio = 10.2; 95% confidence interval = 1.87-55.5, P = 0.007) and HBsAg level (<500 IU/mL, odd ratio = 29.4; 95% confidence interval = 2.80-333, P = 0.005) as independent predictors of HBsAg seroclearance. These results indicate that although serum HBsAg level declines gradually during ETV therapy, HBsAg seroclearance remains a rare event.
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Affiliation(s)
- T Hara
- Department of Hepatology, Toranomon Hospital, Tokyo, Japan
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Edao Y, Kawamura Y, Yamanishi T, Fukada S. Penetration of tritiated water vapor through hydrophobic paints for concrete materials. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.02.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Kawamura Y, Gyobu A, Horikawa H, Saburi T. Martensitic Transformations and Shape Memory Effect in Ti-Ni Sputter-Deposited Thin Films. ACTA ACUST UNITED AC 2014. [DOI: 10.1051/jp4/199558683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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40
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Hanazono K, Nishimori T, Fukumoto S, Kawamura Y, Endo Y, Kadosawa T, Uchide T. Immunohistochemical expression of p63, Ki67 andβ-catenin in canine transitional cell carcinoma and polypoid cystitis of the urinary bladder. Vet Comp Oncol 2014; 14:263-9. [DOI: 10.1111/vco.12095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/28/2014] [Accepted: 03/31/2014] [Indexed: 12/13/2022]
Affiliation(s)
- K. Hanazono
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Nishimori
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - S. Fukumoto
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - Y. Kawamura
- Department of Veterinary Pathology, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - Y. Endo
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Kadosawa
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Uchide
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
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Yasumoto M, Ohta M, Kawamura Y, Hatayama A. Analysis of rapid increase in the plasma density during the ramp-up phase in a radio frequency negative ion source by large-scale particle simulation. Rev Sci Instrum 2014; 85:02B126. [PMID: 24593566 DOI: 10.1063/1.4858136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Numerical simulations become useful for the developing RF-ICP (Radio Frequency Inductively Coupled Plasma) negative ion sources. We are developing and parallelizing a two-dimensional three velocity electromagnetic Particle-In-Cell code. The result shows rapid increase in the electron density during the density ramp-up phase. A radial electric field due to the space charge is produced with increase in the electron density and the electron transport in the radial direction is suppressed. As a result, electrons stay for a long period in the region where the inductive electric field is strong, and this leads efficient electron acceleration and a rapid increasing of the electron density.
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Affiliation(s)
- M Yasumoto
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - M Ohta
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Y Kawamura
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - A Hatayama
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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42
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Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Kumada Y, Murohara T. Association of geriatric nutritional risk index and C-reactive protein with cardiovascular morbidity in end-stage renal disease patients who just began hemodialysis therapy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.4357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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43
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Kamoi D, Ishii H, Kawamura Y, Sakakibara T, Aoyama T. First-generation vs. second-generation drug-eluting stent to coronary intervention in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
A percutaneous medial saphenous artery catheterization technique for swine femoral access is described. The medial saphenous artery is accessed with a 22-gauge catheter-over-needle assembly, followed by 4-Fr 10-cm sheath insertion using the Seldinger technique. The 4-Fr sheath is subsequently exchanged over a 0.035-inch guidewire for a 5-Fr sheath to establish central artery access. The technique was applied to seven vessels in five swine, with successful catheterization in five vessels. The reason for failure was technical difficulty in one case and vasospasm in the other. Central artery access was still possible through direct exposure and puncture of the medial saphenous artery or the femoral artery. This technique may provide an alternative option for central artery access in swine. However, improvement in more reliable catheterization is warranted.
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Affiliation(s)
- Katsunari Namba
- 1 Department of Endovascular Surgery, Jichi Medical University, Tochigi, Japan
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Takahashi H, Ishii H, Kamoi D, Aoyama T, Kawamura Y, Sakakibara T, Kumada Y, Ishii J, Murohara T. Multiple biomarkers improve the prediction of cardiovascular mortality in patients on chronic hemodialysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Ishii H, Aoyama T, Kumada Y, Kamoi D, Sakakibara T, Kawamura Y, Suzuki S, Tanaka M, Yoshikawa D, Murohara T. Treatment with cilostazol prevents incidence of stroke in haemodialysis patients with peripheral artery disease: propensity score-adjusted analysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Kumada Y, Nogaki H, Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Murohara T. Long-term clinical outcome after surgical or percutaneous coronary revascularization in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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48
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Namba K, Mashio K, Kawamura Y, Higaki A, Nemoto S. Swine hybrid aneurysm model for endovascular surgery training. Interv Neuroradiol 2013; 19:153-8. [PMID: 23693037 DOI: 10.1177/159101991301900202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 01/17/2013] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to develop a technically simple swine aneurysm-training model by inserting a silicone aneurysm circuit in the cervical vessels. A silicone aneurysm circuit was created by designing multiple aneurysms in size and configuration on a silicone vessel. Five swine underwent surgical implantation of this circuit in the cervical vessels: one end in the common carotid artery and the other in the external jugular vein. Using this model, an aneurysm coiling procedure was simulated under fluoroscopic guidance, roadmapping and digital subtraction angiography. Creating an aneurysm model for training purposes by this method was technically simple and enabled the formation of a wide variety of aneurysms in a single procedure. The quality of the model was uniform and the model was reproducible. Coiling training using this model resembled a realistic clinical situation. The swine hybrid aneurysm-training model was advantageous from the standpoint of technical simplicity in the creation and variety of aneurysms it provided. The swine hybrid aneurysm model may be an additional option for aneurysm coiling training.
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Affiliation(s)
- K Namba
- Department of Endovascular Surgery, Jichi Medical University; Tochigi, Japan.
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Okamoto A, Kawamura Y, Takahashi H, Kumagai T, Daibo A, Kitajima S. Development of Multi-Port Imaging System for Divertor Simulating Linear Device. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16906] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. Okamoto
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
| | - Y. Kawamura
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
| | - H. Takahashi
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
| | - T. Kumagai
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
| | - A. Daibo
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
| | - S. Kitajima
- Department of Quantum Science and Energy Engineering, Tohoku University: 6-6-01-2 Aobayama, Sendai, 980-8579, Japan
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50
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Kamiya Y, Shimada Y, Ito S, Kikuchi M, Yasuda M, Kawamura Y, Deguchi T. Analysis of the quinolone-resistance determining region of the gyrA gene and the analogous region of the parC gene in Ureaplasma parvum and Ureaplasma urealyticum detected in first-void urine of men with non-gonococcal urethritis. J Antimicrob Chemother 2012; 68:480-2. [DOI: 10.1093/jac/dks417] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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