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Ikeda Y, Teshigawara M, Yan M, Iwamoto C, Fujita K, Abe Y, Wakabayashi Y, Taketani A, Takanashi T, Harada M, Hashiguchi T, Yamagata Y, Matsuzaki Y, Ma B, Takamura M, Mizuta M, Goto M, Ikeda S, Kobayashi T, Otake Y. Experimental validation of cold neutron source performance with mesitylene moderator installed at RANS. JNR 2022. [DOI: 10.3233/jnr-220034] [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: 11/15/2022]
Abstract
The RANS (RIKEN Accelerator driven Neutron Source), one of compact accelerator neutron sources (CANS), tries to expand its performance by installing a cold neutron which may provide new opportunities in many applications. RANS is a low power CANS with a proton beam of 7 MeV and 100 µA at maximum. A moderator system was constructed based on results of optimization design study with mesitylene. Recently, we have done performance tests aiming at showing characteristics as cold neutron source. Cryogenic mesitylene moderator was installed on a plug with a new target moderator reflector configuration of RANS. Experiment using a gas electron multiplier (GEM) detector was carried out to measure neutron spectra of the cold moderator. This paper describes performance of the cold moderator in terms of 1) Cold neutron gain of optimization design with respect to a polyethylene moderator, 2) Temperature dependency of cold neutron spectrum flux regarding scattering kernel (SK), and 3) comparison between experiment and calculation. A note is given for comparison between calculations with different SKs available. Also, two-dimensional imaging of cold and thermal neutron spectrum flux on the viewed surface is shown with a pinhole slit configuration.
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Affiliation(s)
- Yujiro Ikeda
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Makoto Teshigawara
- J-PARC Center Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Mingfei Yan
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Chihiro Iwamoto
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Kunihiro Fujita
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Yutaka Abe
- Kyoto University, Kyotodaigaku-Katsura Nishikyou-ku Kyoto 615-8530, Japan
| | | | - Atsushi Taketani
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | | | - M. Harada
- J-PARC Center Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - Takao Hashiguchi
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Yutaka Yamagata
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Yoshio Matsuzaki
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Baolong Ma
- School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Masato Takamura
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Maki Mizuta
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Makoto Goto
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | - Shota Ikeda
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
| | | | - Yoshie Otake
- Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan
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2
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Minakawa S, Matsuzaki Y, Rokunohe D, Kumagai N, Kurose A, Kushibiki M, Kayaba H, Sawamura D. Hidradenitis suppurativa with perifolliculitis capitis abscedens et suffodiens successfully treated with a human anti-tumour necrosis factor monoclonal antibody. Clin Exp Dermatol 2021; 46:1586-1588. [PMID: 34096639 DOI: 10.1111/ced.14789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 06/02/2021] [Indexed: 11/28/2022]
Affiliation(s)
- S Minakawa
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan.,Department of Clinical Laboratory, Hirosaki University Hospital, Aomori, Japan
| | - Y Matsuzaki
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - D Rokunohe
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - N Kumagai
- Department of Anatomic Pathology, Hirosaki University Hospital, Aomori, Japan
| | - A Kurose
- Department of Anatomic Pathology, Hirosaki University Hospital, Aomori, Japan
| | - M Kushibiki
- Department of Clinical Laboratory, Hirosaki University Hospital, Aomori, Japan
| | - H Kayaba
- Department of Clinical Laboratory, Hirosaki University Hospital, Aomori, Japan
| | - D Sawamura
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
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Mendoza-Hernandez OS, Shima A, Matsumoto H, Inoue M, Abe T, Matsuzaki Y, Sone Y. Exergy valorization of a water electrolyzer and CO 2 hydrogenation tandem system for hydrogen and methane production. Sci Rep 2019; 9:6470. [PMID: 31015548 PMCID: PMC6478912 DOI: 10.1038/s41598-019-42814-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/27/2019] [Indexed: 11/09/2022] Open
Abstract
In this work, we introduce a water electrolysis and CO2 hydrogenation tandem system which focuses on methane generation. The concept consists of a water electrolyzer thermally coupled to a CO2 hydrogenation reactor, where the power required to generate hydrogen comes from renewable energy. A thermodynamic analysis of the tandem system was carried out. Our analysis exposes that it is possible to increase the exergy efficiency of the water electrolyzer and CO2 hydrogenation system by thermal coupling, where the thermal energy required to split water into H2 and O2 during the electrolysis process is compensated by the heat generated during the CO2 hydrogenation reaction. Here, the conditions at which high exergy efficiency can be achieved were identified.
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Affiliation(s)
- Omar S Mendoza-Hernandez
- Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chou-ku, Sagamihara, Kanagawa, 252-5210, Japan
| | - Asuka Shima
- Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chou-ku, Sagamihara, Kanagawa, 252-5210, Japan
| | - Hiroshige Matsumoto
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka City, Fukuoka, 819-0395, Japan
| | - Mitsuhiro Inoue
- Hydrogen Isotope Research Center, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan
| | - Takayuki Abe
- Hydrogen Isotope Research Center, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan
| | - Yoshio Matsuzaki
- Fundamental Technology Department, Tokyo Gas. Co., Ltd., 1-7-7 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa, 230-0045, Japan
| | - Yoshitsugu Sone
- Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chou-ku, Sagamihara, Kanagawa, 252-5210, Japan.
- The Graduate University of Advanced Studies, SOKENDAI, 3-1-1 Yoshinodai, Chou-ku, Sagamihara, Kanagawa, 252-5210, Japan.
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Kawabata Y, Tachikawa Y, Taniguchi S, Matsuzaki Y, Sasaki K. New Applications of SOFC-MGT Hybrid Power Generation System for Low-Carbon Society. ACTA ACUST UNITED AC 2017. [DOI: 10.1149/07801.0197ecst] [Citation(s) in RCA: 4] [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: 11/16/2022]
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5
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Kobayashi J, Tahara T, Matsuzaki Y, Ono Y, Matsumoto J, Sato H, Onko K, Kishimoto Y, Tanino T, Sakaguchi H, Uchida N. PO-0999: Control of rectal volume with Kampo formula during prostate radiotherapy: A prospective study. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31435-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Jenkins C, Yang Y, Yu S, Yu H, Matsuzaki Y, Yoshimura T, Fujii Y, Umegaki K, Shirato H, Xing L. Autonomous Quality Assurance for Spot-Scanning Proton Therapy and SRS/SBRT Using Radioluminescent Phantoms, Optical Imaging, and Machine Vision. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Matsuzaki Y, Morishita H, Shimooka T, Tashima T, Kakuyanagi K, Semba K, Munro WJ, Yamaguchi H, Mizuochi N, Saito S. Optically detected magnetic resonance of high-density ensemble of NV - centers in diamond. J Phys Condens Matter 2016; 28:275302. [PMID: 27214571 DOI: 10.1088/0953-8984/28/27/275302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Optically detected magnetic resonance (ODMR) is a way to characterize the ensemble of NV-centers. Recently, a remarkably sharp dip was observed in the ODMR with a high-density ensemble of NV centers. The model (Zhu et al 2014 Nat. Commun. 5 3424) indicated that such a dip was due to the spin-1 properties of the NV- centers. Here, we present many more details of the analysis to show how this model can be applied to investigate the properties of the NV- centers. By using our model, we have reproduced the ODMR with and without applied external magnetic fields. Additionally, we investigate how the ODMR is affected by the typical parameters of the ensemble NV- centers such as strain distributions, inhomogeneous magnetic fields, and homogeneous broadening width. Our model provides a way to characterize the NV- center from the ODMR, which would be crucial to realize diamond-based quantum information processing.
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Affiliation(s)
- Y Matsuzaki
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa, 243-0198, Japan
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Minakawa S, Tanaka H, Kaneko T, Matsuzaki Y, Kono M, Akiyama M, Minegishi Y, Sawamura D. Hyper-IgE syndrome with a novel mutation of the STAT3 gene. Clin Exp Dermatol 2016; 41:687-9. [PMID: 27333819 DOI: 10.1111/ced.12865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2015] [Indexed: 11/27/2022]
Affiliation(s)
- S Minakawa
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan.
| | - H Tanaka
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - T Kaneko
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Y Matsuzaki
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - M Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Minegishi
- Division of Molecular Medicine, Institute for Genome Research, University of Tokushima, Tokushima, Japan
| | - D Sawamura
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Aomori, Japan
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9
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Matsuura T, Takao S, Matsuzaki Y, Fujii Y, Fujii T, Maeda K, Ueda H, Koyano H, Umegaki K, Shirato H. SU-F-T-131: No Increase in Biological Effectiveness Through Collimator Scattered Low Energy Protons. Med Phys 2016. [DOI: 10.1118/1.4956267] [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: 11/07/2022] Open
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10
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Matsuzaki Y, Jenkins C, Yang Y, Yoshimura T, Fujii Y, Umegaki K, Xing L. TU-FG-BRB-12: Real-Time Visualization of Discrete Spot Scanning Proton Therapy Beam for Quality Assurance. Med Phys 2016. [DOI: 10.1118/1.4957552] [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: 11/07/2022] Open
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11
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Kanehira T, Matsuura T, Takao S, Matsuzaki Y, Fujii Y, Fujii T, Miyamoto N, Inoue T, Katoh N, Shimizu S, Umegaki K, Shirato H. TH-CD-209-11: Simulation Study of Real-Time-Image Gating On Spot Scanning Proton Therapy for Lung Tumors. Med Phys 2016. [DOI: 10.1118/1.4958205] [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: 11/07/2022] Open
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12
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Fujii T, Matsuura T, Takao S, Miyamoto N, Matsuzaki Y, Fujii Y, Umegaki K, Shimizu S, Shirato H. SU-F-I-11: Software Development for 4D-CBCT Research of Real-Time-Image Gated Spot Scanning Proton Therapy. Med Phys 2016. [DOI: 10.1118/1.4955839] [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: 11/07/2022] Open
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13
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Takao S, Matsuura T, Matsuzaki Y, Fujii Y, Fujii T, Katoh N, Shimizu S, Umegaki K, Shirato H. SU-F-T-189: Dosimetric Comparison of Spot-Scanning Proton Therapy Techniques for Liver Tumors Close to the Skin Surface. Med Phys 2016. [DOI: 10.1118/1.4956326] [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: 11/07/2022] Open
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14
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Yoshimura T, Kinoshita R, Onodera S, Toramatsu C, Suzuki R, Ito Y, Takao S, Matsuura T, Matsuzaki Y, Shimizu S, Umegaki K, Shirato H. NTCP Modeling Analysis of Acute Hematologic Toxicity in Whole-Pelvic Radiation Therapy for Gynecologic Malignancies: A Dosimetric Comparison of IMRT and Spot-Scanning Proton Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1187] [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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15
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Yasui T, Mabuchi Y, Toriumi H, Ebine T, Niibe K, Houlihan DD, Morikawa S, Onizawa K, Kawana H, Akazawa C, Suzuki N, Nakagawa T, Okano H, Matsuzaki Y. Purified Human Dental Pulp Stem Cells Promote Osteogenic Regeneration. J Dent Res 2015; 95:206-14. [PMID: 26494655 DOI: 10.1177/0022034515610748] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 12/21/2022] Open
Abstract
Human dental pulp stem/progenitor cells (hDPSCs) are attractive candidates for regenerative therapy because they can be easily expanded to generate colony-forming unit-fibroblasts (CFU-Fs) on plastic and the large cell numbers required for transplantation. However, isolation based on adherence to plastic inevitably changes the surface marker expression and biological properties of the cells. Consequently, little is currently known about the original phenotypes of tissue precursor cells that give rise to plastic-adherent CFU-Fs. To better understand the in vivo functions and translational therapeutic potential of hDPSCs and other stem cells, selective cell markers must be identified in the progenitor cells. Here, we identified a dental pulp tissue-specific cell population based on the expression profiles of 2 cell-surface markers LNGFR (CD271) and THY-1 (CD90). Prospectively isolated, dental pulp-derived LNGFR(Low+)THY-1(High+) cells represent a highly enriched population of clonogenic cells--notably, the isolated cells exhibited long-term proliferation and multilineage differentiation potential in vitro. The cells also expressed known mesenchymal cell markers and promoted new bone formation to heal critical-size calvarial defects in vivo. These findings suggest that LNGFR(Low+)THY-1(High+) dental pulp-derived cells provide an excellent source of material for bone regenerative strategies.
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Affiliation(s)
- T Yasui
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan Department of Dentistry and Oral Surgery, Kawasaki Municipal Kawasaki Hospital, Kanagawa, Japan
| | - Y Mabuchi
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Toriumi
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Ebine
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - K Niibe
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan Division of Molecular and Regenerative Prosthodontics, Graduate School of Dentistry, Tohoku University, Miyagi, Japan
| | - D D Houlihan
- Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham, UK
| | - S Morikawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Onizawa
- Department of Dentistry and Oral Surgery, Kawasaki Municipal Kawasaki Hospital, Kanagawa, Japan
| | - H Kawana
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - C Akazawa
- Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - N Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Y Matsuzaki
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Cancer Biology, Faculty of Medicine, Shimane University, Shimane, Japan
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16
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Cai H, Matsuzaki Y, Kakuyanagi K, Toida H, Zhu X, Mizuochi N, Nemoto K, Semba K, Munro WJ, Saito S, Yamaguchi H. Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV(-) centers. J Phys Condens Matter 2015; 27:345702. [PMID: 26252646 DOI: 10.1088/0953-8984/27/34/345702] [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: 06/04/2023]
Abstract
A hybrid system that combines the advantages of a superconductor flux qubit and an electron spin ensemble in diamond is one of the promising devices to realize quantum information processing. Exploring the properties of the superconductor diamond system is essential for the efficient use of this device. When we perform spectroscopy of this system, significant power broadening is observed. However, previous models to describe this system are known to be applicable only when the power broadening is negligible. Here, we construct a new approach to analyze this system with strong driving, and succeed in reproducing the spectrum with the power broadening. Our results provide an efficient way to analyze this hybrid system.
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Affiliation(s)
- H Cai
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan. Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan
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Yamada T, Miyamoto N, Matsuura T, Takao S, Matsuzaki Y, Fujii Y, Koyano H, Nihongi H, Umezawa M, Matsuda K, Umegaki K, Shirato H. SU-E-T-266: Development of Evaluation System of Optimal Synchrotron Controlling Parameter for Spot Scanning Proton Therapy with Multiple Gate Irradiations in One Operation Cycle. Med Phys 2015. [DOI: 10.1118/1.4924628] [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: 11/07/2022] Open
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18
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Miyamoto N, Takao S, Matsuura T, Matsuzaki Y, Yamada T, Fujii Y, Matsuo Y, Kidani T, Egashira Y, Umekawa T, Shimizu S, Shirato H, Umegaki K. WE-EF-303-05: Development and Commissioning of Real-Time Imaging Function for Respiratory-Gated Spot-Scanning Proton Beam Therapy. Med Phys 2015. [DOI: 10.1118/1.4925996] [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: 11/07/2022] Open
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19
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Umegaki K, Matsuura T, Takao S, Matsuzaki Y, Yamada T, Fujii Y, Miyamoto N, Shimizu S, Shirato H. TH-CD-BRA-10: Startup Experience of the New Proton Beam Therapy System with Gated Spot Scanning and Real-Time Tumor-Tracking. Med Phys 2015. [DOI: 10.1118/1.4926235] [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: 11/07/2022] Open
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20
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Fujii Y, Matsuura T, Takao S, Matsuzaki Y, Yamada T, Miyamoto N, Shimizu S, Umegaki K, Shirato H. SU-E-T-496: Influence of the Intrafraction Patient Repositioning On Spot Scanning Proton Therapy for Prostate Cancer. Med Phys 2015. [DOI: 10.1118/1.4924858] [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: 11/07/2022] Open
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21
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Matsuura T, Fujii Y, Takao S, Yamada T, Matsuzaki Y, Miyamoto N, Takayanagi T, Fujitaka S, Shimizu S, Shirato H, Umegaki K. SU-D-304-01: Development of An Applicator for Treating Shallow and Moving Tumors with Respiratory-Gated Spot-Scanning Proton Therapy Using Real-Time Image Guidance. Med Phys 2015. [DOI: 10.1118/1.4923860] [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: 11/07/2022] Open
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22
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Maekawa K, Futagami T, Kusunoki Y, Matsuzaki Y, Takikawa H. Identification of a novel HLA-B allele HLA-B*07:185 in a Japanese individual. Tissue Antigens 2013; 82:434-436. [PMID: 24147826 DOI: 10.1111/tan.12223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/27/2013] [Accepted: 09/14/2013] [Indexed: 06/02/2023]
Affiliation(s)
- K Maekawa
- Division of Medicinal Safety Science, National Institute of Health Sciences, Tokyo, Japan
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23
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Itagaki T, Suzuki Y, Seto J, Abiko C, Mizuta K, Matsuzaki Y. Two cases of macrolide resistance in Mycoplasma pneumoniae acquired during the treatment period. J Antimicrob Chemother 2012; 68:724-5. [DOI: 10.1093/jac/dks454] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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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24
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Akasaka E, Matsuzaki Y, Kimura K, Ikenaga S, Takeuchi S, Nakano H, Sawamura D. Normolipidaemic xanthomatosis with systemic involvement of the skin, bone and pharynx. Clin Exp Dermatol 2012; 37:305-7. [DOI: 10.1111/j.1365-2230.2011.04187.x] [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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25
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Fujita K, Seyama T, Sobue T, Matsuzaki Y. Development of Segmented-in-series-type Solid Oxide Fuel Cells for Residential Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.egypro.2012.08.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Akasaka E, Nakano H, Nakano A, Toyomaki Y, Takiyoshi N, Rokunohe D, Nishikawa Y, Korekawa A, Matsuzaki Y, Mitsuhashi Y, Sawamura D. Diffuse and focal palmoplantar keratoderma can be caused by a keratin 6c mutation. Br J Dermatol 2011; 165:1290-2. [DOI: 10.1111/j.1365-2133.2011.10552.x] [Citation(s) in RCA: 7] [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: 01/08/2023]
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Maeda T, Numakura M, Mashimo Y, Yoshimura N, Kusano J, Ishikawa T, Murata K, Fujita M, Honda A, Kinoshita M, Matsuzaki Y, Teramoto T. 640 NPC1L1 GENE POLYMORPHISMS AFFECTING CHOLESTEROL ABSORPTION. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70641-9] [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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Matsuzaki Y, Ogawa-Ohnishi M, Mori A, Matsubayashi Y. Secreted Peptide Signals Required for Maintenance of Root Stem Cell Niche in Arabidopsis. Science 2010; 329:1065-7. [DOI: 10.1126/science.1191132] [Citation(s) in RCA: 312] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Maeda T, Honda A, Mashimo Y, Takeoka Y, Yasuda D, Yoshimura N, Kusano J, Tsukamoto K, Ishikawa T, Kinoshita M, Matsuzaki Y, Teramoto T. MS14 SEX DIFFERENCES IN EFFECTS OF NPC1L1 GENE POLYMORPHISM ON CHOLESTEROL ABSORPTION. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70515-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Aoki Y, Suto A, Mizuta K, Ahiko T, Osaka K, Matsuzaki Y. Duration of norovirus excretion and the longitudinal course of viral load in norovirus-infected elderly patients. J Hosp Infect 2010; 75:42-6. [DOI: 10.1016/j.jhin.2009.12.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Accepted: 12/07/2009] [Indexed: 11/26/2022]
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Takeuchi S, Nakano H, Daiki R, Akasaka E, Nishizawa A, Matsuzaki Y, Sawamura D. Disseminated lupus vulgaris diagnosed more than 63 years after onset due to early misdiagnosis as a port-wine stain. Clin Exp Dermatol 2010; 35:e28-9. [DOI: 10.1111/j.1365-2230.2009.03449.x] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Takiyoshi N, Nakano H, Matsuzaki Y, Aizu T, Kaneko T, Rokunohe D, Akasaka E, Jin K, Sawamura D, Ohara K. An eclipse in the subungual space: a diagnostic sign for a subungual epidermal cyst? Br J Dermatol 2009; 161:962-3. [PMID: 19681855 DOI: 10.1111/j.1365-2133.2009.09393.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Mizuta K, Aoki Y, Suto A, Ootani K, Katsushima N, Itagaki T, Ohmi A, Okamoto M, Nishimura H, Matsuzaki Y, Hongo S, Sugawara K, Shimizu H, Ahiko T. Cross-antigenicity among EV71 strains from different genogroups isolated in Yamagata, Japan, between 1990 and 2007. Vaccine 2009; 27:3153-8. [DOI: 10.1016/j.vaccine.2009.03.060] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 03/16/2009] [Accepted: 03/23/2009] [Indexed: 10/20/2022]
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Oshima H, Matsuzaki Y, Takeuchi S, Nakano H, Sawamura D. CD20+ primary cutaneous T-cell lymphoma presenting as a solitary extensive plaque. Br J Dermatol 2009; 160:894-6. [PMID: 19239471 DOI: 10.1111/j.1365-2133.2009.09045.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Matsuzaki Y, Chiba T, Hadama T, Asaoka H, Doy M, Shoda J, Tanaka N, Kinoshita M. HBV genome integration and genetic instability in HBsAg-negative and anti-HCV-positive hepatocellular carcinoma in Japan. Cancer Lett 2008; 119:53-61. [PMID: 18372522 DOI: 10.1016/s0304-3835(97)00249-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The aim of this study is to clarify the existence and the form of HCV RNA and HBV DNA genome integration and genetic instability in liver tissue with HBsAg-negative and anti-HCV-positive HCC. We investigated 16 Japanese patients with HBsAg-negative and anti-HCV-positive HCC. HBV genome integration into host cell genome by Southern hybridization and PCR was examined. Moreover, we analyzed loss of heterozygosity (LOH) and replication errors (RER) of chromosomes 2p, 3p and 17p using the PCR and an autosequencer to determine the three microsatellite regions D2S123, D3S1067, TP53. Eight (50.0%) of 16 were found to have integrated genome of HBV in tumor tissue (T) by PCR. In even the non-tumor regions (NT), seven patients (43.8%) were found to have HBV genome integration. The coincidence between T and NT was found in 4 (25%). Integration of HBV-X gene in T was revealed in three (18.7%), and HBV-integration was confirmed in all NT. No integration of the X gene alone was found in the liver tissue. Five (37.5%) of eight HBV DNA integrated cases simultaneously had HCV RNA minus strand. Concerning the genetic instability, RER were detected in two of 16 (12.5%). RER at 2p; D2S123 was observed in one of 16 (6.2%) and at 3p; D3S1067 was observed in one (6.2%). LOH at the D2S123 locus was observed in one of 12 tumors with heterozygosity (8.3%). There was no genetic instability (LOH or RER) of TP53 which was p53 locus on 17p in T. There was only one case of eight HBV DNA integrated cases (6.2%) with genetic instability of RER of 3p simultaneously in T. In conclusion, the majority of HBsAg-negative and anti-HCV-positive HCC liver tissue was found to have HCV-RNA and HBV DNA integration, and in some samples, HBV DNA integration and genetic instability were concurrently confirmed. It is speculated that multistep carcinogenesis may have been proposed for HCC oncogenetic progression.
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Affiliation(s)
- Y Matsuzaki
- Department of Medicine, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305, Japan
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Abstract
The radiological modalities that are currently utilized as critical components in clinical medicine have also been adapted to small-animal imaging, among which are ultrasound imaging, X-ray computerized tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), and single-photon emission computed tomography (SPECT). Optical imaging techniques such as bioluminescence imaging (BLI) and fluorescence imaging (FLI) are approaches that are commonly used in small animals. Longitudinal surveys of living (i.e., nonsacrificed) animal models with these modalities provide some clues for the development of clinical applications. The techniques are absolutely essential for translational research. However, there are currently few tools available with sufficient spatial or temporal resolution ideal for all experimental studies. In this chapter, we provide a rationale and techniques for visualizing target cells in living small animals and an overview of the advantages and limitations of current imaging technology. Finally, we introduce a humanized mouse and a novel in vivo imaging system that we have developed. We also discuss real-time observations of reconstructs and clinical manifestations.
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Affiliation(s)
- H Masuda
- Department of Obstetrics and Gynecology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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Abstract
The mortality and morbidity of esophageal anastomotic leaks or perforations remain high. We performed retrograde transanastomotic esophageal sump tube drainages for esophageal anastomotic leak or perforation in three patients. Our method is a modified procedure of the T-tube drainage. The Levin gastric tube was simply inserted into the esophagus via anastomotic leak or perforation to develop a defined fistula. All three patients were treated with a satisfactory outcome. An advantage of this method is that it is technically easy, and available for patients whose diseases are difficult to treat with standard T-tube drainage. In addition, one of our patients was successfully managed non-operatively by fluoroscopical guidance. This retrograde esophageal sump tube drainage was technically very easy, safe and useful for esophageal anastomotic leaks or perforations.
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Affiliation(s)
- M Tomita
- Department of Surgery II, Faculty of Medicine, University of Miyazaki, Kihara 5200, Kiyotake, Miyazaki, 889-1692, Japan.
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Abiko C, Mizuta K, Itagaki T, Katsushima N, Ito S, Matsuzaki Y, Okamoto M, Nishimura H, Aoki Y, Murata T, Hoshina H, Hongo S, Ootani K. Outbreak of human metapneumovirus detected by use of the Vero E6 cell line in isolates collected in Yamagata, Japan, in 2004 and 2005. J Clin Microbiol 2007; 45:1912-9. [PMID: 17460056 PMCID: PMC1933089 DOI: 10.1128/jcm.01251-06] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A number of epidemiological studies have shown human metapneumovirus (hMPV) to be one of the most important viral agents associated with acute respiratory infections in humans. However, due to the difficulty in growing the virus, all epidemiological studies of hMPV infection have been performed on the basis of the molecular method. Thus, the development of a cell line suitable for the isolation of hMPV from clinical specimens is a crucial step for further research. Using the Vero E6 cell line, which could be stably maintained for 1 month without passage or medium change, we succeeded in isolating 79 strains from 4,112 specimens obtained in Yamagata, Japan, in 2004 and 2005. The total isolation rate was 1.9% (79/4,112). The monthly distribution revealed that hMPV infections occurred between February and April in 2004 and throughout most of the year in 2005. Phylogenetic analysis indicated that subgenogroup B2 was predominant in 2004, whereas three subgenogroups, A2, B1, and B2, had cocirculated in 2005. Although multiple subgenogroups cocirculated in 2005, each individual subgenogroup strain was found to predominate at specific sites. An infectivity assay of hMPV strains also indicated that the infection efficiency in Vero E6 cells was better than that in LLC-MK2 cells. Finally, we found that Vero E6 cells are useful for the isolation of hMPVs and that this utility might aid further research into hMPVs beyond the epidemiological data shown in this study.
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Affiliation(s)
- C Abiko
- Department of Microbiology, Yamagata Prefectural Institute of Public Health, Tokamachi, Yamagata 990-0031, Japan
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Nishizawa A, Toyomaki Y, Nakano A, Takeuchi S, Matsuzaki Y, Takeda H, Kaneko T, Mitsuhashi Y, Nakano H. A novel H1 domain mutation in the keratin 2 gene in a Japanese family with ichthyosis bullosa of Siemens. Br J Dermatol 2007; 156:1042-4. [PMID: 17408392 DOI: 10.1111/j.1365-2133.2007.07832.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- A Nishizawa
- Department of Dermatology, Hirosaki University School of Medicine, Hirosaki, Japan
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40
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Abstract
Dehydroepiandrosterone (DHEA) is the most abundant adrenal androgenic steroid in young adult humans. The physiological functions of DHEA in preventing human carcinogenesis are still controversial, but a lot of reports have shown that pharmacological doses of DHEA show chemopreventive and anti-proliferative effects on tumors in rodents. Although a therapeutic dose of DHEA has been reported to promote hepatocarcinogenesis in rats due to peroxisomal proliferation, it remains unclear whether DHEA is a peroxisome proliferator in human liver. The chemopreventive and anti-proliferative effects of DHEA are not explained by a single mechanism, and at least four mechanisms seem to contribute to these effects: 1) depletion of NADPH and ribose-5-phosphate due to the inhibition of glucose-6-phosphate dehydrogenase activity, 2) suppression of cholesterol biosynthetic pathway by inhibition of HMG-CoA reductase, 3) interference with cell proliferation signaling pathways, and 4) suppression of nitric oxide generation through down-regulation of nitric oxide synthase II. In addition to studies of the mechanisms underlying the anti-neoplastic effects, searches for more potent and less androgenic DHEA derivatives are ongoing. A small amount of DHEA is endogenously metabolized to 7-oxygenated DHEA, and this may represent a metabolic pathway to more potent steroid hormones. Androsterone, epiandrosterone and etiocholanolone have been considered to be merely inactive end products of DHEA, but may in fact be physiological effectors in their own right. In addition, DHEA analogs such as 3beta-methyl-5-androsten-17-one, 16alpha-fluoro-5-androsten-17-one and 16alpha-fluoro-5alpha-androstan-17-one have been synthesized and shown to be more effective inhibitors of tumor growth, compared with DHEA itself. However, to design potent and safe DHEA derivatives, identification of the DHEA receptor and clarification of the mechanisms of DHEA action are required.
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Affiliation(s)
- Y Matsuzaki
- Division of Gastroenterology and Hepatology, Tokyo Medical University, Kasumigaura Hospital, 3-20-1 Ami-Machi-Chuoh, Inashikigun, Ibaraki 300-0395, Japan.
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Shimizu T, Matsuzaki Y, Onitsuka T. [Surgical treatment for traumatic tracheobronchial injuries]. Kyobu Geka 2006; 59:1007-11. [PMID: 17058663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Tracheobronchial injury is a relatively rare but often fatal condition due to the injury from the neck to the chest. Different clinical features depend on the site of injury. We experienced 5 cases of tracheobronchial injury; cervical trachea in 2, thoracic trachea in 1, tracheal carina in 1, left main bronchus in 1. Three cases were caused by blunt trauma by traffic accident and 2 cases were due to penetrating injury (stab wound and gunshot wound). Thoracotomy with primary repair for 3 (simple repair, bronchoplasty, pneumonectomy) and cervicotomy for 2 (end-to-end anastomosis) were performed. One patient with severe associated injury died of multiple organ failure after surgery. Accurate diagnosis and the appropriate treatment in the early stage is essential in the treatment of tracheobronchial injury.
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Affiliation(s)
- Tetsuya Shimizu
- Department of Second Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Ayabe T, Matsuzaki Y, Shimizu T, Hara M, Tomita M, Onitsuka T. [pN0 stage IA lung cancer downstaged from pN2 IIIA by induction therapy; report of a case]. Kyobu Geka 2006; 59:955-7. [PMID: 16986695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A 75-year-old male of adenocarcinoma in non-small cell lung cancer (NSCLC) was diagnosed to be p-staged IIIA by a preoperative mediastinoscopy. After the induction chemotherapy of cisplatin (80 mg/m2, day 1, 4 weeks, 2 cycles) plus docetaxel hydrate (60 mg/m2, day 1, 4 weeks, 2 cycles), we performed lobectomy and lymph nodes dissection. The postoperative pathological results showed no metastasis of the resected lymph nodes. The postoperative stage has been down to be pN0 IA from pN2 IIIA. After the adjuvant therapy of docetaxel hydrate (60 mg/m2, day 1, 4 weeks, 2 cycles), the postoperative serum carcinoembryonic antigen level has been normalized without a recurrence for more than 2 years. A pathological staging with a mediastinoscopic diagnosis for the suspected clinical IIIA-staged NSCLC should bring us a good assessment of the induction therapy.
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Affiliation(s)
- Takanori Ayabe
- Department of Second Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Ayabe T, Matsuzaki Y, Shimizu T, Hara M, Tomita M, Enomoto Y, Nakata H, Kuroki M, Ito H, Kataoka H, Onitsuka T. [New method for localization of the small ground-glass opacity lesion in resected lung]. Kyobu Geka 2006; 59:377-82. [PMID: 16715888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A small lesion showing ground-glass opacity (GGO) by preoperative computed tomography (CT) is sometimes difficult to detect after lobectomy when it locates in the central part of the lobe. In order to facilitate to identify the lesion for marking pathological specimen, we developed a new method using CT. After surgery, the resected pulmonary lobe was expanded with airflow through the bronchial stump and the target lesion was examined with CT. The laser beam of the CT on the surface of the lung is used as a guiding line for cutting. Through the application of this method for 2 clinical cases, it was found to be possible to exactly identify the GGO lesion from the surface of the resected lung enabling to visualize a fresh surface of the lesion like a CT image with minimal destruction of the structure.
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Affiliation(s)
- T Ayabe
- Department of Second Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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44
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Otani S, Sakurai T, Yamamoto K, Fujita T, Matsuzaki Y, Goto Y, Ando Y, Suzuki S, Usui M, Takeuchi M, Kawakami Y. Frequent immune response to a melanocyte specific protein KU-MEL-1 in patients with Vogt-Koyanagi-Harada disease. Br J Ophthalmol 2006; 90:773-7. [PMID: 16481377 PMCID: PMC1860214 DOI: 10.1136/bjo.2005.086520] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIM To isolate autoantigens possibly involved in the pathogenesis of Vogt-Koyanagi-Harada (VKH) disease. METHODS Autoantigens recognised by immunoglobulin G antibodies (IgG Ab) in sera from VKH patients were isolated by screening the lambda phage cDNA libraries made from melanocytes and a highly pigmented melanoma cell line with the patients' sera. Presence of IgG specific for the autoantigens in sera from patients with various panuveitis and healthy individuals was evaluated. Relation between the specific IgG and various clinicopathological features was examined. RESULTS KU-MEL-1 was found to be one of the 81 isolated positive clones representing 35 distinct genes, which is a previously isolated melanoma antigen preferentially expressed in melanocytes. The IgG Ab specific for KU-MEL-1 was detected in sera from patients with VKH in significantly higher amounts than in sera from patients with Behçet's disease, sarcoidosis, and from healthy individuals. Positive serum KU-MEL-1 Ab was significantly associated with HLA-DRB1*0405 and male VKH patients. CONCLUSION KU-MEL-1 was identified as a new autoantigen for VKH. The highly frequent induction of IgG Ab for KU-MEL-1 in HLA-DRB1*0405 positive VKH patients may suggest the possible involvement of KU-MEL-1 specific CD4(+) T cells in the pathogenesis of VKH, suggesting the possible use in the development of diagnostic and therapeutic treatments for VKH patients.
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Affiliation(s)
- S Otani
- Division of Cellular Signaling, Institute for Advanced Medical Research, Keio University School of Medicine, 35 Shinanomachi, Shinjyukuku, Tokyo, 160-8582, Japan
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Date H, Sutherland K, Hayashi T, Matsuzaki Y, Kiyanagi Y. Inelastic collision processes of low-energy protons in liquid water. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.10.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mizuta K, Abiko C, Murata T, Matsuzaki Y, Itagaki T, Sanjoh K, Sakamoto M, Hongo S, Murayama S, Hayasaka K. Frequent importation of enterovirus 71 from surrounding countries into the local community of Yamagata, Japan, between 1998 and 2003. J Clin Microbiol 2006; 43:6171-5. [PMID: 16333123 PMCID: PMC1317214 DOI: 10.1128/jcm.43.12.6171-6175.2005] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Phylogenetic analysis of 45 enterovirus 71 (EV71) isolates for 6 years in Yamagata, Japan, clarified that the annual outbreak of hand-foot-and-mouth disease was due to four genetically distinct subgenogroups, including a novel "B5." Our results suggest that the importation of EV71 from surrounding countries has had a major epidemiological impact on the local community used in our study.
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Affiliation(s)
- K Mizuta
- Department of Microbiology, Yamagata Prefectural Institute of Public Health, Tokamachi 1-6-6, Yamagata, 990-0031 Japan.
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Ayabe T, Matsuzaki Y, Edagawa M, Shimizu T, Hara M, Tomita M, Akiyama Y, Onitsuka T. [Surgery for the thymoma combined with pure red cell aplasia and myasthenia gravis]. Kyobu Geka 2005; 58:1023-9; discussion 1029-31. [PMID: 16281850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
UNLABELLED Pure red cell aplasia (PRCA) and myasthenia gravis (MG) are respectively combined with thymoma, however, these 3 complications are extremely rare coexisted as a clinical triad. A 73-year-old female with mediastinal tumor found in 2000 was pointed out anemia in June 2002. As PRCA was diagnosed by the bone marrow examination, blood transfusion had been performed. By a chest computed tomography (CT), a thymoma in size of 7 x 5 cm in diameter was recognized in the anterior mediastinum. The serum level of anti-acetylcholine receptor antibody was elevated to be 35 nmol/l. MG was simultaneously diagnosed with a decreased power of neck muscle. The extended thymectomy was performed in August 2002, and pathological diagnosis disclosed a 'type AB' by World Health Organization (WHO) classification. After the operation, the decreased power of neck muscle had been improved, however, PRCA had not been remitted in the early-postoperative term. Blood transfusion had been required (2-4 units/1-2 weeks) for the postoperative 7 months' term. A cyclosporin (250 mg/day) as an adjuvant therapy was administered in April 2003. One month later, the patient's serum level of Hb had been over 10 g/dl without blood transfusion. The patient has been followed up with reducing the dose of cyclosporin. CONCLUSIONS Surgery for a thymoma combined with PRCA and MG was effective for MG but not for PRCA in an early-postoperative term, however, a multimodality therapy with immunosuppressant as a postoperative adjuvant should bring a favorable outcome to patient's clinical data, and the postoperative long-observation must be critical in this case.
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Affiliation(s)
- T Ayabe
- Department of Second Surgery, Miyazaki Medical College, University of Miyazaki, Miyazaki, Japan
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48
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Tomita M, Matsuzaki Y, Shimizu T, Hara M, Ayabe T, Onitsuka T. Prognostic Determinants for Lung Cancer Patients with Preoperative High Serum Carcinoembryonic Antigen Levels. Thorac Cardiovasc Surg 2005; 53:300-4. [PMID: 16208617 DOI: 10.1055/s-2005-865671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Several reports have indicated that preoperative high serum carcinoembryonic antigen (CEA) levels are associated with poor survival after surgical resection in lung cancer. METHODS 82 consecutive lung cancer patients with preoperative high serum CEA levels (> 5 ng/mL) were included in this study. Postoperative serum CEA level was also measured. Prognostic indicators were evaluated. RESULTS Among patients with a preoperative high serum CEA level, a serum CEA level higher than 10 ng/mL, pT status, pN status, and positive pleural lavage cytology findings were unfavorable prognostic indicators, whereas age, gender, smoking status, histologic subtype were not. Postoperative serum CEA levels of all but 2 patients decreased, however those of 28 patients did not return to normal range. Our result showed that patients with postoperative high serum CEA level had poor prognosis. Multivariate analysis demonstrated that pT status, pN status, and postoperative high serum CEA level was an independent prognostic determinant. CONCLUSIONS In lung cancer patients with preoperative high serum CEA levels, pT status, pN status, and normalization of serum CEA level after surgery are significant prognostic determinants.
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Affiliation(s)
- M Tomita
- Department of Surgery II, University of Miyazaki, Miyazaki Medical College, Kiyotake, Miyazaki, Japan.
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49
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Hashimoto T, Tokuuye K, Nemoto K, Onishi K, Fukumitsu N, Igaki H, Hata M, Kagei K, Sugahara S, Ohara K, Matsuzaki Y, Akine Y. Repeated Proton Beam Therapy for Hepatocellular Carcinoma. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.275] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ayabe T, Matsuzaki Y, Edagawa M, Shimizu T, Hara M, Tomita M, Ninomiya H, Onitsuka T. [Primary lung cancer; assessment of the disclosed 5-year survival rate by the Internet website]. Kyobu Geka 2005; 58:451-9. [PMID: 15957418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The disclosed 5-year survival rate for lung cancer in the Internet website represents a various difference by each institution. The better inferiority of the survival has been listed in a table to compare with other institutions and has been reported in magazines and media with a lack of an enough inspection, i.e., with a sufficient considering of a risk adjustment such as patient's background, operative policy, postoperative adjuvant therapy, and statistical background. We report our outcome of the surgical treatment for primary lung cancer. Of 875 patients treated for lung cancer in our department for 23 years between January 1980 and December 2002, 115 patients containing of 42 cases in 1997 and of 48 ones in 1992 and of 25 ones in 1987 were selected and the accumulated survival analysis was treated by Kaplan-Meier method. Eighty males and 35 females were between 15 and 80-year-old (average 63.2 +/- 11.4). The pathological classification was adenocarcinoma (n=69), squamous cell carcinoma (n=32), and others (n=14). The operative procedures were pneumonectomy (n=14), bilobectomy (n=12), lobectomy (n=85), and wedge resection (n=4). The survival time was from 29 days to 182 months (median survival time was 1471+/- 1180 days, the averaged time was 49 months). The 5-year survival rate was 41.4 +/- 9.1% (n=25) in 1987, 35.6 +/- 6.2% (n=48) in 1992, and 56.0 +/- 7.0% (n=42) in 1987, respectively (log-rank test, p = 0.2555). The 10-year survival rate was 24.1 +/- 7.9% in 1987 and 8.5 +/- 3.6% in 1992, respectively. The 5-year survival rate was as follows: IA 81.0 +/- 8.6% (n=20), IB 73.7 +/- 10.1% (n=19), IIA 57.1 +/- 18.7% (n=7), IIB 55.6 +/- 16.6% (n=9), IIIA 28.6 +/- 7.6% (n=35), IIIB 15.4 +/- 10.0% (n=13), IV 16.7 +/- 10.8% (n=12), respectively. The 5-year survival rate was as follows: male 42.8 +/- 5.3% (n=80), female 63.2 +/- 7.3% (n=35), respectively (p = 0.0147). In regard to the histological classification, the 5-year survival rate was as follows: adenocarcinoma 47.2 +/- 5.9% (n=69), squamous cell carcinoma 50.8 +/- 8.9% (n=32), respectively (p = 0.9012). As a rule of the disclosure on the internet website, we report our survival data by accompanying with minimum parameters such as, patient's background, pathological types, gender, pathological stages, and mean survival rate with standard error. When we compare the 5-year survival rate with other institutes, in considering of a risk adjustment, we would carefully have to estimate the determined survival rate with a standard error.
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