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Ueno Y, Yasutake Y, Nomura R, Ishida S, Haratake J, Taga S, Yano K. [A Case of Solitary Inguinal Lymph Node Metastasis 15 Years after Colorectal Cancer Surgery]. Gan To Kagaku Ryoho 2024; 51:445-447. [PMID: 38644317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
The patient is a 69-year-old man. 17 years ago, a colectomy was performed for colorectal cancer, and a disseminated nodule was found during the operation, so the disseminated nodule was also resected. After the surgery, 12 courses of FOLFOX4 were administered, and there was no recurrence thereafter. He was diagnosed with hepatocellular carcinoma 12 years after the colectomy and underwent liver resection. Fifteen years after the colectomy, a mass shadow appeared in the right inguinal region, and inguinal lymph node metastasis of hepatocellular carcinoma or colorectal cancer was suspected. In the same year, he underwent the tumor resection and histopathological diagnosis revealed colon cancer inguinal lymph node metastasis. After the lymph node resection, he has been followed up for 2 years with no recurrence of colorectal cancer. It is extremely rare to have a solitary inguinal lymph node recurrence 15 years after colon surgery.
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Affiliation(s)
- Yosuke Ueno
- Dept. of Surgery, Fukuoka Shin-Mizumaki Hospital
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Huang H, Okamoto M, Watanabe M, Matsumoto S, Moriyama K, Komichi S, Ali M, Matayoshi S, Nomura R, Nakano K, Takahashi Y, Hayashi M. Development of Rat Caries-Induced Pulpitis Model for Vital Pulp Therapy. J Dent Res 2023; 102:574-582. [PMID: 36913545 PMCID: PMC10152557 DOI: 10.1177/00220345221150383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
Rodent animal models for vital pulp therapy are commonly used in dental research because their tooth anatomy and cellular processes are similar to the anatomy and processes in humans. However, most studies have been conducted using uninfected sound teeth, which makes it difficult to adequately assess the inflammatory shift after vital pulp therapy. In the present study, we aimed to establish a caries-induced pulpitis model based on the conventional rat caries model and then evaluate inflammatory changes during the wound-healing process after pulp capping in a model of reversible pulpitis induced by carious infection. To establish the caries-induced pulpitis model, the pulpal inflammatory status was investigated at different stages of caries progression by immunostaining targeted to specific inflammatory biomarkers. Immunohistochemical staining revealed that both Toll-like receptor 2 and proliferating cell nuclear antigen were expressed in moderate and severe caries-stimulated pulp, indicating that an immune reaction occurred at both stages of caries progression. M2 macrophages were predominant in moderate caries-stimulated pulp, whereas M1 macrophages were predominant in the severe caries-stimulated pulp. Pulp capping in teeth with moderate caries (i.e., teeth with reversible pulpitis) led to complete tertiary dentin formation within 28 d after treatment. Impaired wound healing was observed in teeth with severe caries (i.e., teeth with irreversible pulpitis). During the wound-healing process in reversible pulpitis after pulp capping, M2 macrophages were predominant at all time points; their proliferative capacity was upregulated in the early stage of wound healing compared with healthy pulp. In conclusion, we successfully established a caries-induced pulpitis model for studies of vital pulp therapy. M2 macrophages have an important role in the early stages of the wound-healing process in reversible pulpitis.
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Affiliation(s)
- H Huang
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - M Okamoto
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - M Watanabe
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - S Matsumoto
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - K Moriyama
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - S Komichi
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - M Ali
- Department of Restorative Dentistry, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan
| | - S Matayoshi
- Department of Pediatric Dentistry, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - R Nomura
- Department of Pediatric Dentistry, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan.,Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Minami-ku, Hiroshima
| | - K Nakano
- Department of Pediatric Dentistry, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - Y Takahashi
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
| | - M Hayashi
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University, Suita-shi, Osaka, Japan
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Kimura I, Kosugi Y, Wu J, Zahradnik J, Yamasoba D, Butlertanaka EP, Tanaka YL, Uriu K, Liu Y, Morizako N, Shirakawa K, Kazuma Y, Nomura R, Horisawa Y, Tokunaga K, Ueno T, Takaori-Kondo A, Schreiber G, Arase H, Motozono C, Saito A, Nakagawa S, Sato K. The SARS-CoV-2 Lambda variant exhibits enhanced infectivity and immune resistance. Cell Rep 2022; 38:110218. [PMID: 34968415 DOI: 10.1101/2021.07.28.454085] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/24/2021] [Accepted: 12/14/2021] [Indexed: 05/22/2023] Open
Abstract
SARS-CoV-2 Lambda, a variant of interest, has spread in some South American countries; however, its virological features and evolutionary traits remain unclear. In this study, we use pseudoviruses and reveal that the spike protein of the Lambda variant is more infectious than that of other variants due to the T76I and L452Q mutations. The RSYLTPGD246-253N mutation, a unique 7-amino acid deletion in the N-terminal domain of the Lambda spike protein, is responsible for evasion from neutralizing antibodies and further augments antibody-mediated enhancement of infection. Although this mutation generates a nascent N-linked glycosylation site, the additional N-linked glycan is dispensable for the virological property conferred by this mutation. Since the Lambda variant has dominantly spread according to the increasing frequency of the isolates harboring the RSYLTPGD246-253N mutation, our data suggest that the RSYLTPGD246-253N mutation is closely associated with the substantial spread of the Lambda variant in South America.
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Affiliation(s)
- Izumi Kimura
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan
| | - Yusuke Kosugi
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Laboratory of Systems Virology, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 6068507, Japan; Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 6068501, Japan
| | - Jiaqi Wu
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 2591193, Japan; CREST, Japan Science and Technology Agency, Saitama 3220012, Japan
| | - Jiri Zahradnik
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Daichi Yamasoba
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Faculty of Medicine, Kobe University, Hyogo 6500017, Japan
| | - Erika P Butlertanaka
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 8892192, Japan
| | - Yuri L Tanaka
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 8892192, Japan
| | - Keiya Uriu
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; Graduate School of Medicine, The University of Tokyo, 1130033 Tokyo, Japan
| | - Yafei Liu
- Department of Immunochemistry, Research Institute for Microbial Diseases, Osaka University, Osaka 5650871, Japan; Laboratory of Immunochemistry, World Premier International Immunology Frontier Research Centre, Osaka University, Osaka 5650871, Japan
| | - Nanami Morizako
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 8892192, Japan
| | - Kotaro Shirakawa
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 6068507, Japan
| | - Yasuhiro Kazuma
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 6068507, Japan
| | - Ryosuke Nomura
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 6068507, Japan
| | - Yoshihito Horisawa
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 6068507, Japan
| | - Kenzo Tokunaga
- Department of Pathology, National Institute of Infectious Diseases, Tokyo 1628640, Japan
| | - Takamasa Ueno
- Division of Infection and immunity, Joint Research Center for Human Retrovirus infection, Kumamoto University, Kumamoto 8600811, Japan
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 6068507, Japan
| | - Gideon Schreiber
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Hisashi Arase
- Graduate School of Medicine, The University of Tokyo, 1130033 Tokyo, Japan; Department of Immunochemistry, Research Institute for Microbial Diseases, Osaka University, Osaka 5650871, Japan; Center for Infectious Disease Education and Research, Osaka University, Osaka 5650871, Japan
| | - Chihiro Motozono
- Division of Infection and immunity, Joint Research Center for Human Retrovirus infection, Kumamoto University, Kumamoto 8600811, Japan
| | - Akatsuki Saito
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 8892192, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki 8892192, Japan; Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 8892192, Japan
| | - So Nakagawa
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 2591193, Japan; CREST, Japan Science and Technology Agency, Saitama 3220012, Japan; Bioinformation and DDBJ Center, National Institute of Genetics, Mishima, Shizuoka 4118540, Japan.
| | - Kei Sato
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo 1088639, Japan; CREST, Japan Science and Technology Agency, Saitama 3220012, Japan; Graduate School of Medicine, The University of Tokyo, 1130033 Tokyo, Japan.
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4
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Saito A, Irie T, Suzuki R, Maemura T, Nasser H, Uriu K, Kosugi Y, Shirakawa K, Sadamasu K, Kimura I, Ito J, Wu J, Iwatsuki-Horimoto K, Ito M, Yamayoshi S, Loeber S, Tsuda M, Wang L, Ozono S, Butlertanaka EP, Tanaka YL, Shimizu R, Shimizu K, Yoshimatsu K, Kawabata R, Sakaguchi T, Tokunaga K, Yoshida I, Asakura H, Nagashima M, Kazuma Y, Nomura R, Horisawa Y, Yoshimura K, Takaori-Kondo A, Imai M, Tanaka S, Nakagawa S, Ikeda T, Fukuhara T, Kawaoka Y, Sato K. Enhanced fusogenicity and pathogenicity of SARS-CoV-2 Delta P681R mutation. Nature 2022; 602:300-306. [PMID: 34823256 PMCID: PMC8828475 DOI: 10.1038/s41586-021-04266-9] [Citation(s) in RCA: 324] [Impact Index Per Article: 162.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 11/18/2021] [Indexed: 12/27/2022]
Abstract
During the current coronavirus disease 2019 (COVID-19) pandemic, a variety of mutations have accumulated in the viral genome of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and, at the time of writing, four variants of concern are considered to be potentially hazardous to human society1. The recently emerged B.1.617.2/Delta variant of concern is closely associated with the COVID-19 surge that occurred in India in the spring of 2021 (ref. 2). However, the virological properties of B.1.617.2/Delta remain unclear. Here we show that the B.1.617.2/Delta variant is highly fusogenic and notably more pathogenic than prototypic SARS-CoV-2 in infected hamsters. The P681R mutation in the spike protein, which is highly conserved in this lineage, facilitates cleavage of the spike protein and enhances viral fusogenicity. Moreover, we demonstrate that the P681R-bearing virus exhibits higher pathogenicity compared with its parental virus. Our data suggest that the P681R mutation is a hallmark of the virological phenotype of the B.1.617.2/Delta variant and is associated with enhanced pathogenicity.
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Affiliation(s)
- Akatsuki Saito
- grid.410849.00000 0001 0657 3887Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan ,grid.410849.00000 0001 0657 3887Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan ,grid.410849.00000 0001 0657 3887Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Takashi Irie
- grid.257022.00000 0000 8711 3200Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Rigel Suzuki
- grid.39158.360000 0001 2173 7691Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Tadashi Maemura
- grid.26999.3d0000 0001 2151 536XDivision of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan ,grid.14003.360000 0001 2167 3675Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI USA
| | - Hesham Nasser
- grid.274841.c0000 0001 0660 6749Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus infection, Kumamoto University, Kumamoto, Japan ,grid.33003.330000 0000 9889 5690Department of Clinical Pathology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Keiya Uriu
- grid.26999.3d0000 0001 2151 536XDivision of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yusuke Kosugi
- grid.26999.3d0000 0001 2151 536XDivision of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kotaro Shirakawa
- grid.258799.80000 0004 0372 2033Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Sadamasu
- grid.417096.dTokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Izumi Kimura
- grid.26999.3d0000 0001 2151 536XDivision of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Jumpei Ito
- grid.26999.3d0000 0001 2151 536XDivision of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Jiaqi Wu
- grid.265061.60000 0001 1516 6626Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa, Japan ,grid.419082.60000 0004 1754 9200CREST, Japan Science and Technology Agency, Saitama, Japan
| | - Kiyoko Iwatsuki-Horimoto
- grid.26999.3d0000 0001 2151 536XDivision of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Mutsumi Ito
- grid.26999.3d0000 0001 2151 536XDivision of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Seiya Yamayoshi
- grid.26999.3d0000 0001 2151 536XDivision of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan ,grid.45203.300000 0004 0489 0290The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Samantha Loeber
- grid.28803.310000 0001 0701 8607Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI USA
| | - Masumi Tsuda
- grid.39158.360000 0001 2173 7691Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Hokkaido, Japan ,grid.39158.360000 0001 2173 7691Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Hokkaido, Japan
| | - Lei Wang
- grid.39158.360000 0001 2173 7691Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Hokkaido, Japan ,grid.39158.360000 0001 2173 7691Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Hokkaido, Japan
| | - Seiya Ozono
- grid.410795.e0000 0001 2220 1880Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Erika P. Butlertanaka
- grid.410849.00000 0001 0657 3887Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Yuri L. Tanaka
- grid.410849.00000 0001 0657 3887Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Ryo Shimizu
- grid.274841.c0000 0001 0660 6749Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus infection, Kumamoto University, Kumamoto, Japan ,grid.274841.c0000 0001 0660 6749Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenta Shimizu
- grid.39158.360000 0001 2173 7691Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Kumiko Yoshimatsu
- grid.39158.360000 0001 2173 7691Institute for Genetic Medicine, Hokkaido University, Hokkaido, Japan
| | - Ryoko Kawabata
- grid.257022.00000 0000 8711 3200Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takemasa Sakaguchi
- grid.257022.00000 0000 8711 3200Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenzo Tokunaga
- grid.410795.e0000 0001 2220 1880Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Isao Yoshida
- grid.417096.dTokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Hiroyuki Asakura
- grid.417096.dTokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Mami Nagashima
- grid.417096.dTokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Yasuhiro Kazuma
- grid.258799.80000 0004 0372 2033Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryosuke Nomura
- grid.258799.80000 0004 0372 2033Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihito Horisawa
- grid.258799.80000 0004 0372 2033Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazuhisa Yoshimura
- grid.417096.dTokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Akifumi Takaori-Kondo
- grid.258799.80000 0004 0372 2033Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaki Imai
- grid.26999.3d0000 0001 2151 536XDivision of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan ,grid.45203.300000 0004 0489 0290The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | | | - Shinya Tanaka
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Hokkaido, Japan. .,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Hokkaido, Japan.
| | - So Nakagawa
- Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa, Japan. .,CREST, Japan Science and Technology Agency, Saitama, Japan.
| | - Terumasa Ikeda
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus infection, Kumamoto University, Kumamoto, Japan.
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan.
| | - Yoshihiro Kawaoka
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan. .,Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA. .,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan.
| | - Kei Sato
- Division of Systems Virology, Department of Infectious Disease Control, International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan. .,CREST, Japan Science and Technology Agency, Saitama, Japan.
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Kimura I, Kosugi Y, Wu J, Zahradnik J, Yamasoba D, Butlertanaka EP, Tanaka YL, Uriu K, Liu Y, Morizako N, Shirakawa K, Kazuma Y, Nomura R, Horisawa Y, Tokunaga K, Ueno T, Takaori-Kondo A, Schreiber G, Arase H, Motozono C, Saito A, Nakagawa S, Sato K. The SARS-CoV-2 Lambda variant exhibits enhanced infectivity and immune resistance. Cell Rep 2021; 38:110218. [PMID: 34968415 PMCID: PMC8683271 DOI: 10.1016/j.celrep.2021.110218] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/24/2021] [Accepted: 12/14/2021] [Indexed: 12/20/2022] Open
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Okamoto S, Naito Y, Nomura R. Synthesis of folded H-stacking skipped π polymers consisting of different 2-substituted trimethylene tethering units and their optical and conductive property. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hirabayashi S, Shirakawa K, Horisawa Y, Matsumoto T, Matsui H, Yamazaki H, Sarca AD, Kazuma Y, Nomura R, Konishi Y, Takeuchi S, Stanford E, Kawaji H, Murakawa Y, Takaori-Kondo A. APOBEC3B is preferentially expressed at the G2/M phase of cell cycle. Biochem Biophys Res Commun 2021; 546:178-184. [PMID: 33592502 DOI: 10.1016/j.bbrc.2021.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
Abstract
APOBEC3B (A3B) is a cytosine deaminase that converts cytosine to uracil in single-stranded DNA. Cytosine-to-thymine and cytosine-to-guanine base substitution mutations in trinucleotide motifs (APOBEC mutational signatures) were found in various cancers including lymphoid hematological malignancies such as multiple myeloma and A3B has been shown to be an enzymatic source of mutations in those cancers. Although the importance of A3B is being increasingly recognized, it is unclear how A3B expression is regulated in cancer cells as well as normal cells. To answer these fundamental questions, we analyzed 1276 primary myeloma cells using single-cell RNA-sequencing (scRNA-seq) and found that A3B was preferentially expressed at the G2/M phase, in sharp contrast to the expression patterns of other APOBEC3 genes. Consistently, we demonstrated that A3B protein was preferentially expressed at the G2/M phase in myeloma cells by cell sorting. We also demonstrated that normal blood cells expressing A3B were also enriched in G2/M-phase cells by analyzing scRNA-seq data from 86,493 normal bone marrow mononuclear cells. Furthermore, we revealed that A3B was expressed mainly in plasma cells, CD10+ B cells and erythroid cells, but not in granulocyte-macrophage progenitors. A3B expression profiling in normal blood cells may contribute to understanding the defense mechanism of A3B against viruses, and partially explain the bias of APOBEC mutational signatures in lymphoid but not myeloid malignancies. This study identified the cells and cellular phase in which A3B is highly expressed, which may help reveal the mechanisms behind carcinogenesis and cancer heterogeneity, as well as the biological functions of A3B in normal blood cells.
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Affiliation(s)
- Shigeki Hirabayashi
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Kotaro Shirakawa
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihito Horisawa
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tadahiko Matsumoto
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroyuki Matsui
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroyuki Yamazaki
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Anamaria Daniela Sarca
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasuhiro Kazuma
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryosuke Nomura
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshinobu Konishi
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Suguru Takeuchi
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Emani Stanford
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideya Kawaji
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; Tokyo Metropolitan Institute of Medical Sciences, Tokyo, Japan; RIKEN Preventive Medicine and Diagnosis Innovation Program, Wako, Japan
| | - Yasuhiro Murakawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; IFOM-the FIRC Institute of Molecular Oncology, Milan, Italy; Department of Medical Systems Genomics, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Institute for Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, Japan
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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8
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Hiraoka H, Nomura R, Takasugi N, Akai R, Iwawaki T, Kumagai Y, Fujimura M, Uehara T. Spatiotemporal analysis of the UPR transition induced by methylmercury in the mouse brain. Arch Toxicol 2021; 95:1241-1250. [PMID: 33454823 DOI: 10.1007/s00204-021-02982-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/06/2021] [Indexed: 01/11/2023]
Abstract
Methylmercury (MeHg), an environmental toxicant, induces neuronal cell death and injures a specific area of the brain. MeHg-mediated neurotoxicity is believed to be caused by oxidative stress and endoplasmic reticulum (ER) stress but the mechanism by which those stresses lead to neuronal loss is unclear. Here, by utilizing the ER stress-activated indicator (ERAI) system, we investigated the signaling alterations in the unfolded protein response (UPR) prior to neuronal apoptosis in the mouse brain. In ERAI transgenic mice exposed to MeHg (25 mg/kg, S.C.), the ERAI signal, which indicates activation of the cytoprotective pathway of the UPR, was detected in the brain. Interestingly, detailed ex vivo analysis showed that the ERAI signal was localized predominantly in neurons. Time course analysis of MeHg exposure (30 ppm in drinking water) showed that whereas the ERAI signal was gradually attenuated at the late phase after increasing at the early phase, activation of the apoptotic pathway of the UPR was enhanced in proportion to the exposure time. These results suggest that MeHg induces not only ER stress but also neuronal cell death via a UPR shift. UPR modulation could be a therapeutic target for treating neuropathy caused by electrophiles similar to MeHg.
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Affiliation(s)
- Hideki Hiraoka
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8530, Japan
| | - Ryosuke Nomura
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8530, Japan
| | - Nobumasa Takasugi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8530, Japan
| | - Ryoko Akai
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Takao Iwawaki
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Yoshito Kumagai
- Environmental Biology Laboratory, Faculty of Medicine, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Masatake Fujimura
- Department of Basic Medical Science, National Institute for Minamata Disease, Kumamoto, 867-0008, Japan
| | - Takashi Uehara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8530, Japan.
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9
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Miyagawa N, Kobayashi M, Kawazoe Y, Nomura R, Kushimoto S. Extensive inhalation injury treated with veno-venous extracorporeal membrane oxygenation followed by systemic corticosteroid administration: A case report. Burns Open 2020. [DOI: 10.1016/j.burnso.2020.08.003] [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: 11/27/2022] Open
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10
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Aoyagi S, Nomura R, Takahashi T, Suzuki M. Effect of Inner Diameter and Anticoagulation Coating in a Microneedle on its Blood Suction Performance. J Robot Mechatron 2020. [DOI: 10.20965/jrm.2020.p0362] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
As a part of the development of a minimally invasive hollow microneedle designed to mimic a mosquito proboscis, we evaluated the relationship between the needle inner diameter (ID) and blood sucking performance. If the ID is thinned to reduce pain upon piercing skin, blood could clog the tube owing to coagulation, and a sufficient volume of blood might not be obtained. In this study, laser stereo-lithography is used to easily fabricate microtubes of several sizes, at 20–50 μm ID and a fixed length of 500 μm, through which human whole blood is sucked by a vacuum pump. The results indicate that the ID of the tube must be at least 20 μm to prevent hemolysis and at least 50 μm to enable extraction of 200 μL of blood, which is necessary for general blood tests. Moreover, anticoagulant coating applied on the inner wall prevents the clogging of blood and increases the volume of extracted blood.
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11
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Otsuka Y, Kondo T, Nomura R, Yamashita K, Takaori-Kondo A. [Successful treatment with recombinant thrombomodulin in transplant-associated thrombotic microangiopathy following HLA-haploidentical transplantation]. Rinsho Ketsueki 2019; 60:1560-1566. [PMID: 31839635 DOI: 10.11406/rinketsu.60.1560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In March 2009, a 17-year-old woman was first diagnosed with acute myelogenous leukemia and myelodysplasia-related changes. She underwent chemotherapy and allogeneic hematopoietic stem cell transplantation, which resulted in complete remission. However, she experienced relapse, and remission was achieved each time with repeated transplantation. In September 2014, a human leukocyte antigen (HLA)-haploidentical transplantation, which was the fifth allogeneic transplantation, was performed to treat the third relapse. Platelet transfusion refractoriness, hemolytic anemia with schistocytes, and renal dysfunction were observed from approximately the day of engraftment; therefore, transplantation-associated thrombotic microangiopathy (TA-TMA) was diagnosed. Recombinant human soluble thrombomodulin (rTM) was administered, and fresh-frozen plasma (FFP) was infused; this resulted in gradual improvement of TA-TMA. Treatment with rTM and FFP was discontinued on the 70th day after transplantation. Because the HLA-haploidentical transplantation was the fifth allogeneic transplantation, the risk of aggravation of TA-TMA was very high. Combined treatment with rTM and FFP, however, resulted in improvement of TA-TMA. Further investigation of similar cases is necessary for clarifying the usefulness of rTM for TA-TMA.
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Affiliation(s)
- Yasuyuki Otsuka
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University
| | - Tadakazu Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University
| | - Ryosuke Nomura
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University
| | - Kouhei Yamashita
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University
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12
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Takasugi N, Hiraoka H, Nakahara K, Akiyama S, Fujikawa K, Nomura R, Furuichi M, Uehara T. The Emerging Role of Electrophiles as a Key Regulator for Endoplasmic Reticulum (ER) Stress. Int J Mol Sci 2019; 20:E1783. [PMID: 30974903 PMCID: PMC6480251 DOI: 10.3390/ijms20071783] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 03/28/2019] [Accepted: 04/08/2019] [Indexed: 12/13/2022] Open
Abstract
The unfolded protein response (UPR) is activated by the accumulation of misfolded proteins in the endoplasmic reticulum (ER), which is called ER stress. ER stress sensors PERK, IRE1, and ATF6 play a central role in the initiation and regulation of the UPR; they inhibit novel protein synthesis and upregulate ER chaperones, such as protein disulfide isomerase, to remove unfolded proteins. However, when recovery from ER stress is difficult, the UPR pathway is activated to eliminate unhealthy cells. This signaling transition is the key event of many human diseases. However, the precise mechanisms are largely unknown. Intriguingly, reactive electrophilic species (RES), which exist in the environment or are produced through cellular metabolism, have been identified as a key player of this transition. In this review, we focused on the function of representative RES: nitric oxide (NO) as a gaseous RES, 4-hydroxynonenal (HNE) as a lipid RES, and methylmercury (MeHg) as an environmental organic compound RES, to outline the relationship between ER stress and RES. Modulation by RES might be a target for the development of next-generation therapy for ER stress-associated diseases.
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Affiliation(s)
- Nobumasa Takasugi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Hideki Hiraoka
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Kengo Nakahara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Shiori Akiyama
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Kana Fujikawa
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Ryosuke Nomura
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Moeka Furuichi
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
| | - Takashi Uehara
- Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan.
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13
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Godo S, Yoshida Y, Kawamorita N, Mitsuzuka K, Kawazoe Y, Fujita M, Kudo D, Nomura R, Shimokawa H, Kushimoto S. Life-threatening Hyperkalemia Associated with Axitinib Treatment in Patients with Recurrent Renal Carcinoma. Intern Med 2018; 57:2895-2900. [PMID: 29780111 PMCID: PMC6207819 DOI: 10.2169/internalmedicine.0262-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Axitinib has emerged as a promising antineoplastic agent for the treatment of advanced renal cell carcinoma. Although the administration of axitinib was well-tolerated in clinical trials, the real-world safety and tolerability remain unverified. We herein report a patient with metastatic renal cell carcinoma who suddenly developed life-threatening hyperkalemia following the initiation of axitinib treatment. Although hyperkalemia has been reported with an incidence of <10%, acute severe hyperkalemia may be a considerably critical adverse event of axitinib therapy, especially in patients with risk factors for hyperkalemia. An abundance of caution for unusual and unpredictable toxicities is warranted when using axitinib.
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Affiliation(s)
- Shigeo Godo
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Yoshitaro Yoshida
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Naoki Kawamorita
- Department of Urology, Tohoku University Graduate School of Medicine, Japan
| | - Koji Mitsuzuka
- Department of Urology, Tohoku University Graduate School of Medicine, Japan
| | - Yu Kawazoe
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Motoo Fujita
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Daisuke Kudo
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Japan
| | - Ryosuke Nomura
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Hiroaki Shimokawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
| | - Shigeki Kushimoto
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Japan
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14
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Godo S, Irino S, Nakagawa A, Kawazoe Y, Fujita M, Kudo D, Nomura R, Shimokawa H, Kushimoto S. Diagnosis and Management of Patients with Paroxysmal Sympathetic Hyperactivity following Acute Brain Injuries Using a Consensus-Based Diagnostic Tool: A Single Institutional Case Series. TOHOKU J EXP MED 2018; 243:11-18. [PMID: 28890524 DOI: 10.1620/tjem.243.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Paroxysmal sympathetic hyperactivity (PSH) is a distinct syndrome of episodic sympathetic hyperactivities following severe acquired brain injury, characterized by paroxysmal transient fever, tachycardia, hypertension, tachypnea, excessive diaphoresis and specific posturing. PSH remains to be an under-recognized condition with a diagnostic pitfall especially in the intensive care unit (ICU) settings due to the high prevalence of concomitant diseases that mimic PSH. A consensus set of diagnostic criteria named PSH-Assessment Measure (PSH-AM) has been developed recently, which is consisted of two components: a diagnosis likelihood tool derived from clinical characteristics of PSH, and a clinical feature scale assigned to the severity of each sympathetic hyperactivity. We herein present a case series of patients with PSH who were diagnosed and followed by using PSH-AM in our tertiary institutional medical and surgical ICU between April 2015 and March 2017 in order to evaluate the clinical efficacy of PSH-AM. Among 394 survivors of 521 patients admitted with acquired brain injury defined as acute brain injury at all levels of severity regardless of the presence of altered consciousness, including traumatic brain injury, stroke, infectious disease, and encephalopathy, 6 patients (1.5%) were diagnosed as PSH by using PSH-AM. PSH-AM served as a useful scoring system for early objective diagnosis, assessment of severity, and serial evaluation of treatment efficacy in the management of PSH in the ICU settings. In conclusion, critical care clinicians should consider the possibility of PSH and can use PSH-AM as a useful diagnostic and guiding tool in the management of PSH.
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Affiliation(s)
- Shigeo Godo
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine.,Department of Emergency and Critical Care Medicine, Tohoku University Hospital
| | - Shigemi Irino
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital.,Department of Neurology, Tohoku University Graduate School of Medicine
| | - Atsuhiro Nakagawa
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital.,Department of Neurosurgery, Tohoku University Graduate School of Medicine
| | - Yu Kawazoe
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital
| | - Motoo Fujita
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital
| | - Daisuke Kudo
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital.,Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine
| | - Ryosuke Nomura
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital
| | - Hiroaki Shimokawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
| | - Shigeki Kushimoto
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital.,Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine
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15
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Okubo Y, Kaneko H, Shimizu T, Nomura R, Hyuga M, Mitsuyoshi T, Tada K, Ukyo N, Mizutani C, Hatanaka K, Imada K. [Autologous peripheral blood stem cell transplantation for treating primary central nervous system lymphoma: a single-center retrospective study]. Rinsho Ketsueki 2018; 59:33-39. [PMID: 29415935 DOI: 10.11406/rinketsu.59.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Primary central nervous system lymphoma (PCNSL) is more difficult to treat than other lymphomas. Recently, it has been suggested that high-dose chemotherapy followed by autologous stem cell transplantation (ASCT) is effective for treating PCNSL. In the present study, we retrospectively analyzed 12 patients with PCNSL at our hospital. Five young patients with good performance status (PS) received upfront ASCT. The conditioning regimen prior to ASCT with busulfan + cyclophosphamide + etoposide showed good prognosis (complete remission rate of 100%). In addition, the PS improved in patients treated with high-dose chemotherapy followed by ASCT, while it worsened in those treated without ASCT. Further investigations are needed to clarify inclusion/exclusion criteria and optimize conditioning regimens for ASCT.
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Affiliation(s)
- Yukiko Okubo
- Department of Hematology, Osaka Red Cross Hospital
| | | | | | | | - Mizuki Hyuga
- Department of Hematology, Osaka Red Cross Hospital
| | | | - Kohei Tada
- Department of Hematology, Osaka Red Cross Hospital
| | - Naoya Ukyo
- Department of Hematology, Osaka Red Cross Hospital
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16
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Godo S, Kawazoe Y, Ozaki H, Fujita M, Kudo D, Nomura R, Shimokawa H, Kushimoto S. Switching Therapy from Intravenous Landiolol to Transdermal Bisoprolol in a Patient with Thyroid Storm Complicated by Decompensated Heart Failure and Gastrointestinal Dysfunction. Intern Med 2017; 56:2603-2609. [PMID: 28883252 PMCID: PMC5658526 DOI: 10.2169/internalmedicine.8846-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Thyroid storm is a life-threatening disorder that remains a therapeutic challenge. Although β-blockers are the mainstay for treatment, their use can be challenging in cases complicated by rapid atrial fibrillation and decompensated heart failure. We present a case of thyroid storm-associated atrial fibrillation and decompensated heart failure complicated by gastrointestinal dysfunction secondary to diffuse peritonitis that was successfully managed by a switching therapy, in which the continuous intravenous administration of landiolol was changed to bisoprolol via transdermal patch, in the acute phase treatment. This switching therapy may offer a promising therapeutic option for this potentially lethal disorder.
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Affiliation(s)
- Shigeo Godo
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Yu Kawazoe
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Hiroshi Ozaki
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Graduate School of Medicine, Japan
| | - Motoo Fujita
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Daisuke Kudo
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Japan
| | - Ryosuke Nomura
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
| | - Hiroaki Shimokawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
| | - Shigeki Kushimoto
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Japan
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Japan
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17
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Ooyama Y, Nomura R, Enoki T, Sagisaka R, Tsunoji N, Ohshita J. Development of a Dual-Fluorescence Emission Sensor Based on Photo-Induced Electron Transfer and Aggregation-Induced Emission Enhancement for Detection of Water. ChemistrySelect 2017. [DOI: 10.1002/slct.201701216] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yousuke Ooyama
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
| | - Ryosuke Nomura
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
| | - Toshiaki Enoki
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
| | - Rizumu Sagisaka
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
| | - Nao Tsunoji
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
| | - Joji Ohshita
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University, 1-4-1 Kagamiyama; Higashi-Hiroshima 739-8527 Japan
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18
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Kamada H, Suzuki H, Nomura R, Kushimoto S. Delayed sensorimotor neuropathy and renal failure: an additional report in a patient with diethylene glycol poisoning. Acute Med Surg 2017; 4:472-473. [PMID: 29123912 PMCID: PMC5649304 DOI: 10.1002/ams2.285] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/14/2017] [Indexed: 11/27/2022] Open
Affiliation(s)
- Hiroki Kamada
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Hideaki Suzuki
- Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Ryosuke Nomura
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Shigeki Kushimoto
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
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19
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Nomura R, Sato T, Sato Y, Medin JA, Kushimoto S, Yanagisawa T. Azidothymidine-triphosphate impairs mitochondrial dynamics by disrupting the quality control system. Redox Biol 2017; 13:407-417. [PMID: 28683400 PMCID: PMC5498287 DOI: 10.1016/j.redox.2017.06.011] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 06/26/2017] [Indexed: 11/30/2022] Open
Abstract
Highly active anti-retrovirus therapy (HAART) has been used to block the progression and symptoms of human immunodeficiency virus infection. Although it decreases morbidity and mortality, clinical use of HAART has also been linked to various adverse effects such as severe cardiomyopathy resulting from compromised mitochondrial functioning. However, the mechanistic basis for these effects remains unclear. Here, we demonstrate that a key component of HAART, 3ꞌ-azido-3ꞌ-deoxythymidine (AZT), particularly, its active metabolite AZT-triphosphate (AZT-TP), caused mitochondrial dysfunction, leading to induction of cell death in H9c2 cells derived from rat embryonic myoblasts, which serve as a model for cardiomyopathy. Specifically, treatment with 100µM AZT for 48h disrupted the mitochondrial tubular network via accumulation of AZT-TP. The mRNA expression of dynamin-related protein (Drp)1 and the Drp1 receptor mitochondrial fission factor (Mff) was upregulated whereas that of optic atrophy 1 (Opa1) was downregulated following AZT treatment. Increased mitochondrial translocation of Drp1, Mff upregulation, and decreased functional Opa1 expression induced by AZT impaired the balance of mitochondrial fission vs. fusion. These data demonstrate that AZT-TP causes cell death by altering mitochondrial dynamics.
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Affiliation(s)
- Ryosuke Nomura
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8575, Japan; Department of Emergency and Critical Care, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8574, Japan.
| | - Takeya Sato
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8575, Japan.
| | - Yuka Sato
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8575, Japan.
| | - Jeffrey A Medin
- Departments of Pediatrics and Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Road, CRI: C4540, Milwaukee, WI 53226, USA.
| | - Shigeki Kushimoto
- Department of Emergency and Critical Care, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8574, Japan.
| | - Teruyuki Yanagisawa
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ward, Sendai, Miyagi 980-8575, Japan.
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20
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Kamada H, Suzuki H, Yamamoto S, Nomura R, Kushimoto S. Delayed autonomic neuropathy in a patient with diethylene glycol poisoning: a case report. Acute Med Surg 2017; 4:326-328. [PMID: 29123883 PMCID: PMC5674463 DOI: 10.1002/ams2.267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 12/19/2016] [Indexed: 11/05/2022] Open
Abstract
Case A 72-year-old man presented to our hospital after ingesting insecticide containing approximately 2 mL/kg diethylene glycol, which exceeded the lethal dose of 1 mL/kg. The patient recovered from critical symptoms on acute phase until day 3, but received artificial ventilation for muscle weakness secondary to sensorimotor neuropathy on days 11-54. Outcome Even after marked improvement from sensorimotor neuropathy, the patient continued to complain of orthostatic hypotension. Autonomic neuropathy was identified by positive result of a head-up tilt test, and reduction in coefficient of variation of R-R intervals and cardiac iodine-123-metaiodobenzylguanidine uptake for the assessment of cardiac sympathetic activity. The patient's symptoms fully recovered 2 years after the exposure to diethylene glycol. Conclusion This case shows the first report of delayed autonomic neuropathy after recovery from severe sensorimotor neuropathy, and suggests the importance of continuous monitoring for late-onset neurological complications.
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Affiliation(s)
- Hiroki Kamada
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Hideaki Suzuki
- Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Saori Yamamoto
- Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Ryosuke Nomura
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Shigeki Kushimoto
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Sendai Japan
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21
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Godo S, Yoshida Y, Fujita M, Kudo D, Nomura R, Shimokawa H, Kushimoto S. The Dramatic Recovery of a Patient with Biguanide-associated Severe Lactic Acidosis Following Thiamine Supplementation. Intern Med 2017; 56:455-459. [PMID: 28202871 PMCID: PMC5364202 DOI: 10.2169/internalmedicine.56.7754] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Biguanides are a drug of choice for the treatment of type 2 diabetes mellitus. Although they can cause lactic acidosis in susceptible patients with predisposing risk factors, the incidence of lactic acidosis is reported to be very low when they are used properly. We herein present a case of biguanide-associated severe lactic acidosis complicated with thiamine deficiency that was provoked without predisposing factors for thiamine deficiency. Diabetic patients taking biguanide may be predisposed to thiamine deficiency, even when there is no evidence of risk factors, and the high-dose administration of thiamine may be essential in the treatment of this otherwise under-recognized disorder.
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Affiliation(s)
- Shigeo Godo
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
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Abstract
We noted the absence of all 4 third molars (M3) in Epilepsy-Like disorder (EL) mice, an animal model for the study of epilepsy. This study was conducted to identify the major candidate chromosome and to detect the region that included the candidate gene causing the absence of M3 in EL mice. Linkage analysis was performed on genetic crosses of EL mice and MSM ( Mus musculus molossinus) strain mice, which had a normal complement of teeth. Genome-wide screening by individual genotyping of F2intercross mice identified mouse chromosome 3 as one of the candidate chromosomes. Based on high linkage scores in detailed genotyping of F2intercross and N2backcross mice, the candidate locus for the absence of M3 in EL mice was mapped on the middle of chromosome 3.
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Affiliation(s)
- R Nomura
- Department of Pediatric Dentistry, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-Nishi, Matsudo, Chiba 271-8587, Japan.
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Naka S, Nomura R, Takashima Y, Okawa R, Ooshima T, Nakano K. A specific Streptococcus mutans strain aggravates non-alcoholic fatty liver disease. Oral Dis 2016; 20:700-6. [PMID: 25360469 DOI: 10.1111/odi.12191] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Streptococcus mutans, a major dental caries pathogen, has shown to be associated with the aggravation of cerebral hemorrhage and inflammatory bowel diseases. In this study, we evaluated the effects ofS. mutans on the development of non-alcoholic steatohepatitis (NASH) in a mouse model. MATERIALS AND METHODS Streptococcus mutans oral strain MT8148 (serotype c) and a blood isolate TW871 (k) were used. C57BL/6J mice (6 weeks old)were fed a high-fat diet for 4 weeks; the test strains or phosphate-buffered saline was then intravenously administered. Mice were euthanized after 8 or 12 weeks. Whole body, extirpated liver, and visceral fat weights were determined, and histopathological evaluations of the liver specimens were performed. RESULTS Mice infected with TW871 showed significantly greater body and liver weights than those administered MT8148 or phosphate-buffered saline. Histopathological analyses revealed prominent infiltration of inflammatory cells and adipocellular deposition in livers extirpated 8 weeks after an infection with TW871; fibrosis was also observed in livers extirpated after 12 weeks. CONCLUSION These results suggest that a specific strain of S. mutans could induce NASH.
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Okamoto S, Kudo M, Nomura R, Moriai R, Naito Y, Funyu S, Ishitsuka KI, Asano N. Synthesis and properties of folded π-stacking polymers having J-aggregative, alternative, and staggered assembling structures. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.05.075] [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: 11/16/2022]
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25
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Kushimoto S, Akaishi S, Sato T, Nomura R, Fujita M, Kudo D, Kawazoe Y, Yoshida Y, Miyagawa N. Lactate, a useful marker for disease mortality and severity but an unreliable marker of tissue hypoxia/hypoperfusion in critically ill patients. Acute Med Surg 2016; 3:293-297. [PMID: 29123802 DOI: 10.1002/ams2.207] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 03/19/2016] [Indexed: 01/20/2023] Open
Abstract
Early aggressive hemodynamic resuscitation using elevated plasma lactate as a marker is an essential component of managing critically ill patients. Therefore, measurement of blood lactate is recommended to stratify patients based on the need for fluid resuscitation and the risks of multiple organ dysfunction syndrome and death. Hyperlactatemia is common among critically ill patients, and lactate levels and their trend may be reliable markers of illness severity and mortality. Although hyperlactatemia has been widely recognized as a marker of tissue hypoxia/hypoperfusion, it can also result from increased or accelerated aerobic glycolysis during the stress response. Additionally, lactate may represent an important energy source for patients in critical condition. Despite its inherent complexity, the current simplified view of hyperlactatemia is that it reflects the presence of global tissue hypoxia/hypoperfusion with anaerobic glycolysis. This review of hyperlactatemia in critically ill patients focuses on its pathophysiological aspects and recent clinical approaches. Hyperlactatemia in critically ill patients must be considered to be related to tissue hypoxia/hypoperfusion. Therefore, appropriate hemodynamic resuscitation is required to correct the pathological condition immediately. However, hyperlactatemia can also result from aerobic glycolysis, unrelated to tissue dysoxia, which is unlikely to respond to increases in systemic oxygen delivery. Because hyperlactatemia may be simultaneously related to, and unrelated to, tissue hypoxia, physicians should recognize that resuscitation to normalize plasma lactate levels could be over-resuscitation and may worsen the physiological status. Lactate is a reliable indicator of sepsis severity and a marker of resuscitation; however, it is an unreliable marker of tissue hypoxia/hypoperfusion.
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Affiliation(s)
- Shigeki Kushimoto
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Aoba-ku Sendai Miyagi Japan
| | - Satoshi Akaishi
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Takeaki Sato
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Ryosuke Nomura
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Motoo Fujita
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Daisuke Kudo
- Division of Emergency and Critical Care Medicine Tohoku University Graduate School of Medicine Aoba-ku Sendai Miyagi Japan
| | - Yu Kawazoe
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Yoshitaro Yoshida
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
| | - Noriko Miyagawa
- Department of Emergency and Critical Care Medicine Tohoku University Hospital Aoba-ku Sendai Miyagi Japan
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26
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Takahashi T, Minezaki H, Suzuki A, Obara K, Itaka K, Nomura R, Okuda Y. Control of the wetting properties of ^{4}He crystals in superfluid. Phys Rev E 2016; 93:052806. [PMID: 27300963 DOI: 10.1103/physreve.93.052806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 06/06/2023]
Abstract
To investigate whether it is possible to control the wetting of ^{4}He crystals on a wall in superfluid, the contact angles of ^{4}He crystals were measured on rough and smooth walls at very low temperatures. A rough wall was prepared in a simple manner in which a commercially available coating agent for car mirrors, which makes the glass surface superhydrophobic, was used to coat a glass plate. The contact angles of ^{4}He crystals were increased by approximately 10^{∘} on the rough wall coated with the agent. Therefore, the increase in the repellency of ^{4}He crystals in superfluid was demonstrated to be possible on a very rough surface. The enhancement of the contact angles and a scanning electron microscopy image of the coated surface both suggest that a Cassie-Baxter state of ^{4}He crystals was realized on the surface; the crystals did not have full contact with the wall, but entrapped superfluid was present beneath the crystals in the hollow parts of the rough wall.
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Affiliation(s)
- T Takahashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - H Minezaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - A Suzuki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - K Obara
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - K Itaka
- NJRISE, Hirosaki University, 2-1-3 Matsubara, Aomori-shi, Aomori 030-0613, Japan
| | - R Nomura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Y Okuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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Kuriyama N, Watanabe I, Miyatani F, Matsui D, Ozaki E, Nomura R, Nakano K, Watanabe Y. The Correlation between Microbleeds and Cnm-positive Streptococcus Mutans: A Pilot Survey Study Based on Magnetic Resonance Imaging. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.134] [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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28
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Takashima Y, Fujita K, Ardin A, Nagayama K, Nomura R, Nakano K, Matsumoto-Nakano M. Characterization of the dextran-binding domain in the glucan-binding protein C of Streptococcus mutans. J Appl Microbiol 2015; 119:1148-57. [DOI: 10.1111/jam.12895] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/22/2015] [Accepted: 06/09/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Takashima
- Department of Pediatric Dentistry; Okayama University Graduate School of Medicine; Dentistry and Pharmaceutical Sciences; Kita-ku Okayama Japan
| | - K. Fujita
- Department of Pediatric Dentistry; Okayama University Graduate School of Medicine; Dentistry and Pharmaceutical Sciences; Kita-ku Okayama Japan
| | - A.C. Ardin
- Department of Pediatric Dentistry; Osaka University Graduate School of Dentistry; Suita Osaka Japan
| | - K. Nagayama
- Department of Pediatric Dentistry; Osaka University Graduate School of Dentistry; Suita Osaka Japan
| | - R. Nomura
- Department of Pediatric Dentistry; Osaka University Graduate School of Dentistry; Suita Osaka Japan
| | - K. Nakano
- Department of Pediatric Dentistry; Osaka University Graduate School of Dentistry; Suita Osaka Japan
| | - M. Matsumoto-Nakano
- Department of Pediatric Dentistry; Okayama University Graduate School of Medicine; Dentistry and Pharmaceutical Sciences; Kita-ku Okayama Japan
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29
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Miyatani F, Kuriyama N, Watanabe I, Nomura R, Nakano K, Matsui D, Ozaki E, Koyama T, Nishigaki M, Yamamoto T, Mizuno T, Tamura A, Akazawa K, Takada A, Takeda K, Yamada K, Nakagawa M, Ihara M, Kanamura N, Friedland RP, Watanabe Y. Relationship between Cnm-positive Streptococcus mutans and cerebral microbleeds in humans. Oral Dis 2015. [PMID: 26205098 DOI: 10.1111/odi.12360] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 11/30/2022]
Abstract
OBJECTIVE Cerebral hemorrhage has been shown to occur in animals experimentally infected with Streptococcus mutans carrying the collagen-binding Cnm gene. However, the relationship between cerebral microbleeds and oral hygiene, with a focus on Cnm gene-positive S. mutans infection, remains unclear. MATERIAL AND METHODS One hundred and thirty-nine subjects participated. The presence or absence of Cnm-positive S. mutans and its collagen-binding activity were investigated using saliva samples, and relationship with cerebral microbleeds detected on MRI investigated, including clinical information and oral parameters. RESULTS Fifty-one subjects were identified as Cnm-positive S. mutans carriers (36.7%), with cerebral microbleeds being detected in 43 (30.9%). A significantly larger number of subjects carried Cnm-positive S. mutans in the cerebral microbleeds (+) group. S. mutans with Cnm collagen-binding ability was detected in 39 (28.1%) of all subjects, and the adjusted odds ratio for cerebral microbleeds in the Cnm-positive group was 14.4. Regarding the presence of cerebral microbleeds, no significant differences were noted in the number of remaining teeth, dental caries, or in classic arteriosclerosis risk factors. CONCLUSIONS The occurrence of cerebral microbleeds was higher in subjects carrying Cnm-positive S. mutans, indicating that the presence of Cnm-positive S. mutans increases cerebral microbleeds, and is an independent risk for the development of cerebrovascular disorders.
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Affiliation(s)
- F Miyatani
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N Kuriyama
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - I Watanabe
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - R Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - K Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - D Matsui
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - E Ozaki
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Koyama
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Nishigaki
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Yamamoto
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Mizuno
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A Tamura
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K Akazawa
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A Takada
- Kyoto Industrial Health Association, Kyoto, Japan
| | - K Takeda
- Kyoto Industrial Health Association, Kyoto, Japan
| | - K Yamada
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Nakagawa
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Ihara
- Department of Stroke and Cerebrovascular Diseases, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - N Kanamura
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - R P Friedland
- Department of Neurology, University of Louisville, KY, USA
| | - Y Watanabe
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Murakawa S, Yamaguchi A, Arai M, Wasai M, Aoki Y, Ishimoto H, Nomura R, Okuda Y, Nagato Y, Higashitani S, Nagai K. Spin-dependent acoustic response in the nonunitary A1 and A2 phases of superfluid 3He under high magnetic fields. Phys Rev Lett 2015; 114:105304. [PMID: 25815943 DOI: 10.1103/physrevlett.114.105304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Indexed: 06/04/2023]
Abstract
The transverse acoustic impedance of superfluid ^{3}He was measured in the A1 and A2 phases up to 13 T to investigate the surface states in nonunitary superfluids. The temperature dependence of the impedance was much larger in the A1 phase than in the A2 phase. This nonsymmetric behavior indicates that momentum exchange with walls for spin-down surface states is quite different from that for spin-up surface states. The spin-dependent response might be a reflection of an essential feature of the nonunitary states where gap amplitudes depend on spin states. Weak-coupling theories ignore any spin-dependent processes and do not account for the nonsymmetric behavior.
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Affiliation(s)
- S Murakawa
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - A Yamaguchi
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - M Arai
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - M Wasai
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Aoki
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - H Ishimoto
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - R Nomura
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Okuda
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Nagato
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
| | - S Higashitani
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
| | - K Nagai
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
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Yasumoto A, Matsumura N, Nomura R, Tokumura H. Penrose drain guided insertion of a laparoscopic Nathanson liver retractor. Ann R Coll Surg Engl 2014; 97:80. [PMID: 25519282 DOI: 10.1308/rcsann.2015.97.1.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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32
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Nomura R, Saito T, Mitomi H, Hidaka Y, Lee SY, Watanabe S, Yao T. GNAS mutation as an alternative mechanism of activation of the Wnt/β-catenin signaling pathway in gastric adenocarcinoma of the fundic gland type. Hum Pathol 2014; 45:2488-96. [PMID: 25288233 DOI: 10.1016/j.humpath.2014.08.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [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: 07/01/2014] [Revised: 08/27/2014] [Accepted: 08/29/2014] [Indexed: 12/16/2022]
Abstract
Gastric adenocarcinoma of the fundic gland type (GAFG) is a rare variant of gastric tumor. We have recently reported the frequent accumulation of β-catenin in GAFGs and showed that approximately half of the cases studied harbored at least 1 mutation in CTNNB1/AXINs/APC, leading to the constitutive activation of the Wnt/β-catenin pathway. However, the mechanisms of Wnt signaling activation in the remaining cases are unknown. Accumulating evidence showed that the activating mutation in GNAS promotes tumorigenesis via the activation of the Wnt/β-catenin pathway or the ERK1/2 MAPK pathway. Therefore, we analyzed the mutations in GNAS (exons 8 and 9) and in KRAS (exon 2) in 26 GAFGs. Immunohistochemistry revealed nuclear β-catenin expression in 22 of 26 GAFGs, and 10 (38.5%) of 26 cases harbored at least 1 mutation in CTNNB1/AXINs/APC. Activating mutations in GNAS were found in 5 (19.2%) of 26 GAFGs, all of which harbored R201C mutations. Activating mutations in KRAS were found in 2 (7.7%) of 26 GAFGs, and both of these also contained GNAS activating mutations. Four of 5 cases with GNAS mutation showed nuclear β-catenin expression, and presence of GNAS mutation was associated with β-catenin nuclear expression (P = .01). Furthermore, 3 of these 4 cases did not harbor mutations in CTNNB1, APC, or AXINs, suggesting that mutations in the Wnt component genes and those in GNAS occur almost exclusively. These results suggest that GNAS mutation might occur in a small subset of GAFG as an alternative mechanism of activating the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Ryosuke Nomura
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan; Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Tsuyoshi Saito
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan.
| | - Hiroyuki Mitomi
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi 321-0293, Japan
| | - Yasuhiro Hidaka
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan; Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Se-yong Lee
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan; Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Takashi Yao
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
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Nomura R, Sato K, Suzuki I. P08.22 * THE ROLE OF CYBERKNIFE FOR PITUITARY METASTASES. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.210] [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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34
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Maekawa S, Nomura R, Murase T, Ann Y, Harada M. Complete closure of artificial gastric ulcer after endoscopic submucosal dissection by combined use of a single over-the-scope clip and through-the-scope clips (with videos). Surg Endosc 2014; 29:500-4. [PMID: 25052125 PMCID: PMC4293458 DOI: 10.1007/s00464-014-3725-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 07/01/2014] [Indexed: 12/16/2022]
Abstract
Background A 5–7 day hospital stay is usually needed after endoscopic submucosal dissection (ESD) of gastric tumor because of the possibility of delayed perforation or bleeding. The aim of this study was to evaluate the efficacy of combined use of a single over-the-scope clip (OTSC) and through-the-scope clips (TTSCs) to achieve complete closure of artificial gastric ulcer after ESD. Methods We prospectively studied 12 patients with early gastric cancer or gastric adenoma. We performed complete closure of post-ESD artificial gastric ulcer using a combination of a single OTSC and TTSCs. Results Mean size of post-ESD artificial ulcer was 54.6 mm. The mean operating time for the closure procedure was 15.2 min., and the success rate was 91.7 % (11/12). Patients who underwent complete closure of post-ESD artificial gastric ulcer could be discharged the day after ESD and the closing procedure. Conclusions Complete closure of post-ESD artificial gastric ulcer using a combination of a single OTSC and TTSCs is useful for shortening the period of hospitalization and reducing treatment cost. Electronic supplementary material The online version of this article (doi:10.1007/s00464-014-3725-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Satoshi Maekawa
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata, 942-8502, Japan,
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Moriai R, Naito YS, Nomura R, Funyu S, Ishitsuka KI, Asano N, Okamoto S. Design and synthesis of 2-(1,3-dialkoxy-2-methylpropan-2-yl)-1,3-diarylpropanes as tethering units for folded H-stacking polymers. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.020] [Citation(s) in RCA: 6] [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: 10/25/2022]
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36
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Kushimoto S, Yamanouchi S, Endo T, Sato T, Nomura R, Fujita M, Kudo D, Omura T, Miyagawa N, Sato T. Body temperature abnormalities in non-neurological critically ill patients: a review of the literature. J Intensive Care 2014; 2:14. [PMID: 25520830 PMCID: PMC4267592 DOI: 10.1186/2052-0492-2-14] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 02/07/2014] [Indexed: 12/11/2022] Open
Abstract
Body temperature abnormalities, which occur because of several infectious and non-infectious etiologies, are among the most commonly noted symptoms of critically ill patients. These abnormalities frequently trigger changes in patient management. The purpose of this article was to review the contemporary literature investigating the definition and occurrence of body temperature abnormalities in addition to their impact on illness severity and mortality in critically ill non-neurological patients, particularly in patients with severe sepsis. Reports on the influence of fever on outcomes are inconclusive, and the presence of fever per se may not contribute to increased mortality in critically ill patients. In patients with severe sepsis, the impacts of elevated body temperature and hypothermia on mortality and the severity of physiologic decline are different. Hypothermia is significantly associated with an increased risk of mortality. In contrast, elevated body temperature may not be associated with increased disease severity or risk of mortality. In patients with severe sepsis, the effect of fever and fever control on outcomes requires further research.
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Affiliation(s)
- Shigeki Kushimoto
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Seiryo-machi 2-1, Aoba-ku, Sendai, Miyagi, 980-8574 Japan ; Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Satoshi Yamanouchi
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Seiryo-machi 2-1, Aoba-ku, Sendai, Miyagi, 980-8574 Japan ; Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Tomoyuki Endo
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Takeaki Sato
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Ryosuke Nomura
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Motoo Fujita
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Daisuke Kudo
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Taku Omura
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Noriko Miyagawa
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
| | - Tetsuya Sato
- Department of Emergency and Critical Care Medicine, Tohoku University Hospital, Seiryo-machi 1-1, Aoba-ku, Sendai, 980-8574 Japan
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Brouste A, Fukasawa M, Hino H, Iacus SM, Kamatani K, Koike Y, Masuda H, Nomura R, Ogihara T, Shimuzu Y, Uchida M, Yoshida N. The YUIMA Project: A Computational Framework for Simulation and Inference of Stochastic Differential Equations. J Stat Softw 2014. [DOI: 10.18637/jss.v057.i04] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Maekawa S, Kawahara T, Nomura R, Murase T, Ann Y, Oeholm M, Harada M. Retrospective study on the efficacy of a low-carbohydrate diet for impaired glucose tolerance. Diabetes Metab Syndr Obes 2014; 7:195-201. [PMID: 24966689 PMCID: PMC4063858 DOI: 10.2147/dmso.s62681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND In recent years, the number of people with impaired glucose tolerance (IGT) has increased steadily worldwide. It is clear that the prevention of diabetes is important from the perspective of public health, medical care, and economics. It was recently reported that a low-carbohydrate diet (LCD) is useful for achieving weight loss and glycemic control, but there is no information about the effects of the LCD on IGT. We designed a 7-day in-hospital educational program focused on the LCD for IGT. METHODS The subjects were 72 patients with IGT (36 in the LCD group and 36 in the control group) who were enrolled from April 2007-March 2012 and followed for 12 months. We retrospectively compared the LCD group with the control group. RESULTS In 69.4% of the LCD group, blood glucose was normalized at 12 months and the 2-hour plasma glucose level in the oral glucose tolerance test (OGTT) was reduced by 33 mg/dL. In addition, the incidence of diabetes was significantly lower in the LCD group than in the control group at 12 months (0% versus 13.9%, P=0.02). The LCD group showed a significant decrease in fasting plasma glucose, hemoglobin A1c, the homeostasis model of assessment of insulin resistance value, body weight and serum triglycerides (TGs) at 12 months, while there was a significant increase of the serum high-density lipoprotein (HDL) cholesterol level. CONCLUSION The LCD is effective for normalizing blood glucose and preventing progression to type 2 diabetes in patients with IGT.
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Affiliation(s)
- Satoshi Maekawa
- Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
- Correspondence: Satoshi Maekawa, Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata, Japan, Tel +81 25 543 3123, Fax +81 25 544 5210, Email
| | - Tetsuya Kawahara
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
| | - Ryosuke Nomura
- Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
| | - Takayuki Murase
- Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
| | - Yasuyoshi Ann
- Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
| | - Masayuki Oeholm
- Department of Gastroenterology and Hepatology, Japan Labor Health and Welfare Organization, Niigata Rosai Hospital, Joetsu, Niigata, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka, Japan
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Kudo D, Yamanouchi S, Sato T, Nomura R, Omura T, Miyagawa N, Kushimoto S. Response of coagulation and fibrinolysis system was different between older and nonolder patients with severe sepsis. Crit Care 2014. [PMCID: PMC4068868 DOI: 10.1186/cc13293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Sato T, Nomura R, Song Q, Yanagisawa T. [Regulation of mitochondrial dynamism. Fragile-handle with care]. Nihon Yakurigaku Zasshi 2013; 142:203. [PMID: 24107526 DOI: 10.1254/fpj.142.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Nomura R, Moriai R, Kudo M, Hoshino T, Watanabe JI, Funyu S, Ishitsuka KI, Okamoto S. Synthesis and properties of through-space conjugated polymers based on π-π stacked 1,3-biarylpropane tethering units. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26738] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ryosuke Nomura
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Ryota Moriai
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Masaru Kudo
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Tohru Hoshino
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Jun-ichi Watanabe
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Shigeaki Funyu
- Tsukuba Research Laboratory; Hitachi Chemical Co., Ltd.; 48 Wadai Tsukuba-shi Ibaraki 300-4247 Japan
| | - Ken-ich Ishitsuka
- Tsukuba Research Laboratory; Hitachi Chemical Co., Ltd.; 48 Wadai Tsukuba-shi Ibaraki 300-4247 Japan
| | - Sentaro Okamoto
- Department of Material and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
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Kojima A, Nomura R, Naka S, Okawa R, Ooshima T, Nakano K. Aggravation of inflammatory bowel diseases by oral streptococci. Oral Dis 2013; 20:359-66. [PMID: 23679203 DOI: 10.1111/odi.12125] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 02/24/2013] [Revised: 04/18/2013] [Accepted: 04/20/2013] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Streptococcus mutans can aggravate colitis in mice. We evaluated the virulence of colitis using type strains as well as blood isolates of several oral streptococcal species. MATERIALS AND METHODS We investigated the susceptibility of blood isolates of several oral streptococci to phagocytosis, adhesion to and invasion of hepatic cells and interferon-γ secretion. A mouse model of dextran sodium sulphate-induced colitis was used to evaluate bacterial aggravation of colitis. In addition, interferon-γ antibody was administered to mice with prominent aggravation of colitis. RESULTS In vitro analyses showed that Streptococcus sanguinis ATCC 10556 was a possible virulent strain among type strains of several oral streptococci, and that analysis of blood isolates of S. sanguinis TW289 revealed a potential virulent strain. Intravenous administration of ATCC 10556 and TW289 caused prominent aggravation of dextran sodium sulphate-induced colitis, and histopathological examinations showed that interferon-γ secretion due to infection of hepatic cells caused colitis aggravation. Administration of interferon-γ antibody suppressed TW289-induced colitis. CONCLUSION These results suggest that some virulent oral streptococcal strains are associated with the aggravation of colitis induced by enhanced secretion of interferon-γ when they invade the bloodstream.
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Affiliation(s)
- A Kojima
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Maekawa S, Nomura R, Murase T, Ann Y, Oeholm M, Harada M. Endoscopic gallbladder stenting for acute cholecystitis: a retrospective study of 46 elderly patients aged 65 years or older. BMC Gastroenterol 2013; 13:65. [PMID: 23586815 PMCID: PMC3675408 DOI: 10.1186/1471-230x-13-65] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 04/10/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Endoscopic transpapillary pernasal gallbladder drainage and endoscopic gallbladder stenting (EGS) have recently been reported to be useful in patients with acute cholecystitis for whom a percutaneous approach is contraindicated. The aim of this study was to evaluate the efficacy of permanent EGS for management of acute cholecystitis in elderly patients who were poor surgical candidates. METHODS We retrospectively studied 46 elderly patients aged 65 years or older with acute cholecystitis who were treated at Japan Labour Health and Welfare Organization Niigata Rosai Hospital. In 40 patients, acute cholecystitis was diagnosed by transabdominal ultrasonography and computed tomography, while 6 patients were transferred from other hospitals after primary management of acute cholecystitis. All patients underwent EGS, with a 7Fr double pig-tail stent being inserted into the gallbladder. If EGS failed, percutaneous transhepatic gallbladder drainage or percutaneous transhepatic gallbladder aspiration was subsequently performed. The main outcome measure of this study was the efficacy of EGS. RESULTS Permanent EGS was successful in 31 patients (77.5%) with acute cholecystitis, without any immediate postprocedural complications such as pancreatitis, bleeding, perforation, or cholangitis. The most common comorbidities of these patients were cerebral infarction (n=14) and dementia (n=13). In 30 of these 31 patients (96.7%), there was no recurrence of cholecystitis and 29 patients (93.5%) remained asymptomatic until death or the end of the study period (after 1 month to 5 years). CONCLUSIONS EGS can be effective for elderly patients with acute cholecystitis who are poor surgical candidates and can provide a solution for several years.
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Affiliation(s)
- Satoshi Maekawa
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare
Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata,
942-8502, Japan
| | - Ryosuke Nomura
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare
Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata,
942-8502, Japan
| | - Takayuki Murase
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare
Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata,
942-8502, Japan
| | - Yasuyoshi Ann
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare
Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata,
942-8502, Japan
| | - Masayuki Oeholm
- Department of Gastroenterological Medicine, Japan Labour Health and Welfare
Organization Niigata Rosai Hospital, 1-7-12 Touncho, Joetsu, Niigata,
942-8502, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, University of Occupational and
Environmental Health, 1-1 Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka,
807-8555, Japan
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Takenaka S, Nomura R, Minegishi A, Yoshida KI. Enrichment and characterization of a bacterial culture that can degrade 4-aminopyridine. BMC Microbiol 2013; 13:62. [PMID: 23517195 PMCID: PMC3637104 DOI: 10.1186/1471-2180-13-62] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 03/11/2013] [Indexed: 11/23/2022] Open
Abstract
Background The agrichemical 4-aminopyridine is used as a bird repellent in crop fields and has an epileptogenic action in a variety of animals, including man and mouse. 4-Aminopyridine is biodegraded in the environment through an unknown mechanism. Results A 4-aminopyridine-degrading enrichment culture utilized 4-aminopyridine as a carbon, nitrogen, and energy source, generating 4-amino-3-hydroxypyridine, 3,4-dihydroxypyridine, and formate as intermediates. 4-Amino-3-hydroxypyridine could not be further metabolized and probably accumulated as a dead-end product in the culture. Biodegradability tests and partial sequence analysis of the enrichment culture indicated that 4-aminopyridine was mainly degraded via 3,4-dihydroxypyridine and that the metabolite is probably cleaved by 3-hydroxy-4-pyridone dioxygenase. Seven culturable predominant bacterial strains (strains 4AP-A to 4AP-G) were isolated on nutrient agar plates. Changes in the bacterial populations of 4-aminopyridine, 3,4-dihydroxypyridine, or formate/ammonium chloride enrichment cultures were monitored by denaturing gradient gel electrophoresis (DGGE) profiling of PCR-amplified 16S rRNA gene fragments. Sequence analysis of the 16S rRNA gene fragments derived from predominant DGGE bands indicated that Pseudomonas nitroreducens 4AP-A and Enterobacter sp. 4AP-G were predominant in the three tested enrichment cultures and that the unculturable strains Hyphomicrobium sp. 4AP-Y and Elizabethkingia sp. 4AP-Z were predominant in 4-aminopyridine and formate/ammonium chloride enrichment cultures and in the 3,4-dihydroxypyridine enrichment culture, respectively. Among the culturable strains, strain 4AP-A could utilize 3,4-dihydroxypyridine as a growth substrate. Although we could not isolate strain 4AP-Y on several media, PCR-DGGE analysis and microscopy indicated that the unique bi-polar filamentous bacterial cells gradually became more dominant with increasing 4-aminopyridine concentration in the medium. Conclusions Hyphomicrobium sp. 4AP-Y, P. nitroreducens 4AP-A, and Elizabethkingia sp. 4AP-Z probably play important roles in 4-aminopyridine degradation in crop fields. In the enrichment culture, 3,4-dihydroxypyridine and its metabolites including formate might be shared as growth substrates and maintain the enrichment culture, including these indispensable strains.
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Affiliation(s)
- Shinji Takenaka
- Department of Applied Biological Chemistry, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan.
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Koakutsu T, Nomura R, Yamanouchi S, Kushimoto S, Itoi E, Shinozawa Y. Oxygen free radical and antioxidant status in necrotizing soft tissue infection of the lower extremity; a report of two cases with opposite outcomes. Ups J Med Sci 2013; 118:46-50. [PMID: 23163625 PMCID: PMC3572671 DOI: 10.3109/03009734.2012.733738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Two cases of necrotizing soft tissue infection of the lower extremity were treated concurrently but independently. Multimodal therapy including hip joint disarticulation and hyperbaric oxygen therapy was administered, resulting in opposite outcomes: survival and death. Analysis of the relationships between patient outcome and time-course changes in serum diacron-reactive oxygen metabolites (d-ROMs; an index of oxidative stress), antioxidative potential, and cytokines revealed that serum d-ROMs levels decreased with time, but high serum levels of interleukin-10 (anti-inflammatory cytokine) persisted in the patient who died. These findings may reflect an immunosuppressive status unfavorable to infection prevention. Serum d-ROMs may be a prognostic predictor in necrotizing soft tissue infections.
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Affiliation(s)
- Tomoaki Koakutsu
- Department of Orthopaedic Surgery, Tohoku University Hospital, Sendai, Japan.
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Kudo D, Sasaki J, Akaishi S, Yamanouchi S, Koakutsu T, Endo T, Sato T, Nomura R, Yuzawa H, Kobayashi M, Shinozawa Y, Kushimoto S. Efficacy of a high FFP:PRBC transfusion ratio on the survival of severely injured patients: a retrospective study in a single tertiary emergency center in Japan. Surg Today 2013; 44:653-61. [PMID: 23420095 DOI: 10.1007/s00595-013-0518-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 03/07/2011] [Accepted: 01/24/2013] [Indexed: 11/25/2022]
Abstract
PURPOSE Recent studies have shown increased survival benefits when a high fresh frozen plasma (FFP) to packed red blood cell (PRBC) ratio is used during trauma resuscitation. However, some reports have raised questions about the effect of higher FFP:PRBC transfusion ratios. The aim of this study was to examine the efficacy of high FFP:PRBC ratios in injured patients with regard to survival and morbidity in a single tertiary emergency center in Japan. METHODS This study examined severe trauma patients who received 10 or more PRBC units during the first 24 h of admission. We examined the relationship between the FFP:PRBC ratios during the first 6 h and the patient outcome. RESULTS The severity was similar among all groups. The mortality rate was 44.4% in the high (>1:1.5), 16.7% in the middle (1:1.5-1:2) and 33.3% in the low (<1:2) F:P ratio groups. Only one patient in the high group developed sepsis, and none of the patients developed ARDS. CONCLUSIONS The current results indicate that the FFP:PRBC ratios during the first 6 h after admission might not affect the mortality or morbidity. However, differences between trauma care systems in Japan and other countries, along with other study limitations, necessitate that a subsequent prospective multicenter study be undertaken before any definitive conclusions can be made.
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Affiliation(s)
- Daisuke Kudo
- Emergency Center, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan,
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Omoto M, Imai T, Seki K, Nomura R, Otahara Y. The effect on the bones of condensed phosphate when used as food additives: Its Importance in Relation to Preventive Medicine. Environ Health Prev Med 2012; 2:105-16. [PMID: 21432463 DOI: 10.1007/bf02931975] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 11/27/2022] Open
Abstract
Based on the fact that chemical products such as binding agents are produced by mixing three kinds of phosphates with different ratios, we mixed metaphosphate, polyphosphate and pyrophosphate. Each was made to Na-phosphate, K-phosphate, and Ca-phosphate and each was mixed with commercial feeds so that the content of P would be approximately 0.1, 0.15, 0.3, 0.4, 0.6 and 1.0%. The prepared pellets were given to ICR, CF # 1 and AKR strains of mice at 29 days of age for 680 days and observations were made through this experimental period at different stages. The observations were also carried out on the mice administered with the experimental feeds for 1.5 months from 9 to 10.5 months of age. The observations were compared with those of the control group at all times. As a result, plasma 1 α, 25 (OH)(2) D(3) and P levels were always significantly higher in the phosphate administered groups relative to the control. Urine P and Fe increased while urine Ca decreased in the phosphate-treated groups.The effect of phosphates on the bones was studied taking soft X-ray pictures of hind legs and applying microdensitometry to them. Through these observations we recognized thinning of the cortex of bones, reduction of marrow trabecules and development of osteophyte. Histological observations disclosed that changes in knee joint tissues were apparent; that is, a decrease in or an irregular loss of the number of cells in superficial, intermediate, and radial strata of the joint cartilage, proliferation of subchondral bone, and the development of osteophytes were noted. As for muscles, diameters of musclar fibers became smaller; in particular, type II fibers showed greater shrinkage. Regarding kidneys, swelling and atrophy of glomerular capillaries, proliferation of mesangial cells, nephroselerosis, swelling, thinning, and loss of tubular epithelium, interstitial tissue inflammation, development of cylindruria, and deposition of calcium were observed. All these changes seem to be a particularly advanced aspect of the changes which are more pronounced with increasing dose and age.These changes were found even in the group administered with the feed containing 0.1% phosphorus, and, these changes were dependent on the concentration level of P. It was observed that administration to older subjects for a short term (1.5 months) produced effects stronger than those to younger subjects administered for a long term (10.5 months).The effects of condensed Ca-phosphate on bones were similar to those of condensed Na- and K-phosphates, and, hence, it was supposed that these effects were caused by phosphate radicals.
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Affiliation(s)
- M Omoto
- Department of Enviromental and Occupational Health, Toho University, School of Medicine, 5-21-16 Omorinishi, Ota-ku, 143, Tokyo, Japan
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Nomura R, Naka S, Nemoto H, Inagaki S, Taniguchi K, Ooshima T, Nakano K. Potential involvement of collagen-binding proteins of Streptococcus mutans in infective endocarditis. Oral Dis 2012; 19:387-93. [PMID: 22998492 DOI: 10.1111/odi.12016] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/13/2012] [Accepted: 08/20/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Streptococcus mutans, a major pathogen of dental caries, is considered to be one of the causative agents of infective endocarditis (IE). Two types of cell surface collagen-binding proteins, Cnm and Cbm, have been identified in the organism. The aim of the present study was to analyze these proteins as possible etiologic factors for IE. MATERIALS AND METHODS The binding activities of S. mutans strains to collagen types I, III, and IV were analyzed relative to the presence of Cnm and Cbm, as were their adhesion and invasion properties with human umbilical vein endothelial cells (HUVEC). In addition, distributions of the genes encoding Cnm and Cbm in S. mutans-positive heart valve specimens extirpated from IE and non-IE patients were analyzed by PCR. RESULTS Most of the Cbm-positive strains showed higher levels of binding to type I collagen as well as higher rates of adhesion and invasion with HUVEC as compared to the Cnm-positive strains. Furthermore, the gene encoding Cbm was detected significantly more frequently in heart valve specimens from IE patients than from non-IE patients. CONCLUSIONS These results suggest that the collagen-binding protein Cbm of S. mutans may be one of the potential important factor associated with the pathogenesis of IE.
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Affiliation(s)
- R Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Abstract
Superfluid (3)He is an intensively investigated and well characterized p-wave superfluid. In the bulk Balian-Werthamer state, which is commonly called the (3)He B phase, the superfluid gap is opened isotropically but near a flat boundary such as a wall of a container it can harbor interesting quasi-particle states inside the gap. These states are called surface Andreev bound states, and have not been experimentally explored in detail. Transverse acoustic impedance measurement has revealed their existence and provided spectroscopic details of the dispersion of the bound states. Recent theoretical arguments claim that the surface Andreev bound states of the superfluid (3)He B phase can be recognized as the edge states of the topological superfluid and be regarded as a Majorana fermion, a fancy particle which has not been confirmed in elementary particle physics. In this review, we present up-to-date knowledge on the surface Andreev bound states of the (3)He B phase revealed by acoustic spectroscopy and the possible realization of a Majorana fermion, along with related studies on this topic.
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Affiliation(s)
- Y Okuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
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Sato T, Nomura R, Yuzawa H, Koakutsu T, Kuroda H, Yamanouchi S, Kushimoto S. Therapeutic strategy for deep muscle abscess: from the review of 22 cases of institutional experience. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.859] [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] Open
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