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Sable-Morita S, Arai Y, Takanashi S, Aimoto K, Okura M, Tanikawa T, Maeda K, Tokuda H, Arai H. Development and Testing of the Foot Care Scale for Older Japanese Diabetic Patients. INT J LOW EXTR WOUND 2024; 23:140-147. [PMID: 34605297 DOI: 10.1177/15347346211045033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We aimed to develop and test the reliability and validity of a foot care self-management assessment tool for older Japanese patients with diabetes. In this cross-sectional observational study, which was carried out according to the Strengthening the Reporting of Observational Studies in Epidemiology guidelines, additional items were developed and selected to reflect older Japanese patients' needs a thorough investigation with experts in diabetes and geriatrics. A total of 200 older patients with diabetes in a foot care outpatient clinic were included in the study to finalize the scale items and verify the scale's reliability and validity. A factor analysis yielded a 4-factor, 9-item scale. Factors 1 to 4 were "skin condition" (3 items), "nail clipping" (2 items), "attention to wounds" (2 items), and "relationships with others" (2 items). The Cronbach's α coefficients for the 4 factors were .852, .900, .820, and .571, respectively. The overall scale was 0.797, indicating good internal consistency. Spearman's correlation coefficients for each of the 4 factors with the scale's total score showed good stability; all correlations were significant. In Japan's super-aged society, it is important to focus on foot care practices among older adults and to promote good foot care practices among early older adults so that they can practice self-care at home. Therefore, a scale for comprehensively evaluating foot care in elderly patients with diabetes is needed. The Foot Care Scale for Older Diabetics could be useful as a tool for assessing the ability to self-manage foot care in older Japanese patients with diabetes.
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Affiliation(s)
| | - Yuki Arai
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Sanae Takanashi
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Keita Aimoto
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Mika Okura
- Graduate School of Medicine, Nagoya University, Japan
| | | | - Keisuke Maeda
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Haruhiko Tokuda
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Hidenori Arai
- National Center for Geriatrics and Gerontology, Aichi, Japan
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2
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Tohi Y, Kato T, Yokomizo A, Mitsuzuka K, Tomida R, Inokuchi J, Matsumoto R, Saito T, Sasaki H, Inoue K, Kinoshita H, Fukuhara H, Maruyama S, Sakamoto S, Tanikawa T, Egawa S, Ichikura H, Abe T, Nakamura M, Kakehi Y, Sugimoto M. Impact of health-related quality of life on repeat protocol biopsy compliance on active surveillance for favorable prostate cancer: Results from a prospective cohort in the PRIAS-JAPAN study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01410-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Sable‐Morita S, Tanikawa T, Satake S, Okura M, Tokuda H, Arai H. Microvascular complications and frailty can predict adverse outcomes in older patients with diabetes. Geriatr Gerontol Int 2021; 21:359-363. [DOI: 10.1111/ggi.14142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 12/24/2020] [Accepted: 01/17/2021] [Indexed: 01/12/2023]
Affiliation(s)
- Sayuri Sable‐Morita
- Department of Nursing National Center for Geriatrics and Gerontology Obu Japan
| | - Takahisa Tanikawa
- Department of Metabolic Medicine National Center for Geriatrics and Gerontology Obu Japan
| | - Shosuke Satake
- Geriatric Medicine National Center for Geriatrics and Gerontology Obu Japan
| | - Mika Okura
- School of Human and Environmental Studies Kyoto University Kyoto Japan
| | - Haruhiko Tokuda
- Department of Metabolic Medicine National Center for Geriatrics and Gerontology Obu Japan
| | - Hidenori Arai
- Geriatric Medicine National Center for Geriatrics and Gerontology Obu Japan
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Tanikawa T, Karabekyan S, Kovalev S, Casalbuoni S, Asgekar V, Bonetti S, Wall S, Laarmann T, Turchinovich D, Zalden P, Kampfrath T, Fisher AS, Stojanovic N, Gensch M, Geloni G. Volt-per-Ångstrom terahertz fields from X-ray free-electron lasers. J Synchrotron Radiat 2020; 27:796-798. [PMID: 32381783 PMCID: PMC7206546 DOI: 10.1107/s1600577520004245] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
The electron linear accelerators driving modern X-ray free-electron lasers can emit intense, tunable, quasi-monochromatic terahertz (THz) transients with peak electric fields of V Å-1 and peak magnetic fields in excess of 10 T when a purpose-built, compact, superconducting THz undulator is implemented. New research avenues such as X-ray movies of THz-driven mode-selective chemistry come into reach by making dual use of the ultra-short GeV electron bunches, possible by a rather minor extension of the infrastructure.
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Affiliation(s)
- T. Tanikawa
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - S. Karabekyan
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - S. Kovalev
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - S. Casalbuoni
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - V. Asgekar
- Physics Department, S. P. Pune University, Pune 411 007, India
| | - S. Bonetti
- Department of Physics, Stockholm University, 106 91 Stockholm, Sweden
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy
| | - S. Wall
- ICFO, Avinguda Carl Friedrich Gauss 3, 08860 Castelldefels, Barcelona, Spain
| | - T. Laarmann
- Deutsches Elektronen Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging CUI, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - D. Turchinovich
- Fakultät für Physik, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - P. Zalden
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - T. Kampfrath
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - A. S. Fisher
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - N. Stojanovic
- Deutsches Elektronen Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- DLR – Institute for Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
| | - M. Gensch
- DLR – Institute for Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
- Institute of Optics and Atomic Physics, Technische Universität Berlin, Straße des 17 Juni 135, 10623 Berlin, Germany
| | - G. Geloni
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
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5
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Kotoda M, Hishiyama S, Mitsui K, Tanikawa T, Morikawa S, Takamino A, Matsukawa T. Assessment of the potential for pathogen dispersal during high-flow nasal therapy. J Hosp Infect 2019; 104:534-537. [PMID: 31759093 PMCID: PMC7114853 DOI: 10.1016/j.jhin.2019.11.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 11/22/2022]
Abstract
High-flow nasal therapy is increasingly used in hospitals because of its effectiveness and patient comfort. However, pathogens in the patient's nasal and oral cavities may be dispersed by forced air. This study aimed to investigate the risk of pathogen dispersal during high-flow nasal therapy. Liquid and bacterial dispersal were assessed via in-vitro experimental set-ups using a manikin. Thickened water or fresh yeast solution mimicked saliva and nasal mucus secretions. Dispersal was limited to the proximal area of the face and nasal cannula, suggesting that high-flow nasal therapy does not increase the risk of droplet and contact infection.
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Affiliation(s)
- M Kotoda
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan; Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, USA.
| | - S Hishiyama
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - K Mitsui
- Surgical Center, University of Yamanashi Hospital, University of Yamanashi, Yamanashi, Japan
| | - T Tanikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - S Morikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - A Takamino
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - T Matsukawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
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6
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Chen M, Deinert JC, Green B, Wang Z, Ilyakov I, Awari N, Bawatna M, Germanskiy S, de Oliveira TVAG, Geloni G, Tanikawa T, Gensch M, Kovalev S. Pulse- and field-resolved THz-diagnostics at 4 t h generation lightsources. Opt Express 2019; 27:32360-32369. [PMID: 31684450 DOI: 10.1364/oe.27.032360] [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] [Received: 08/16/2019] [Accepted: 09/20/2019] [Indexed: 06/10/2023]
Abstract
Multi-color pump-probe techniques utilizing modern accelerator-based 4th generation light sources such as X-ray free electron lasers or superradiant THz facilities have become important science drivers over the past 10 years. In this type of experiments the precise knowledge of the properties of the involved accelerator-based light pulses crucially determines the achievable sensitivity and temporal resolution. In this work we demonstrate and discuss the powerful role pulse- and field-resolved- detection of superradiant THz pulses can play for improving the precision of THz pump - femtosecond laser probe experiments at superradiant THz facilities in particular and at 4th generation light sources in general. The developed diagnostic scheme provides real-time information on the properties of individual pulses from multiple accelerator based THz sources and opens a robust way for sub femtosecond timing. Correlations between amplitude and phase of the pulses emitted from different superradiant THz sources furthermore provide insides into the properties of the driving electron bunches and is of general interest for the ultra-fast diagnostics at 4th generation light sources.
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Ogama N, Sakurai T, Kawashima S, Tanikawa T, Tokuda H, Satake S, Miura H, Shimizu A, Kokubo M, Niida S, Toba K, Umegaki H, Kuzuya M. Postprandial Hyperglycemia Is Associated With White Matter Hyperintensity and Brain Atrophy in Older Patients With Type 2 Diabetes Mellitus. Front Aging Neurosci 2018; 10:273. [PMID: 30258360 PMCID: PMC6143668 DOI: 10.3389/fnagi.2018.00273] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/24/2018] [Indexed: 12/20/2022] Open
Abstract
Type 2 diabetes mellitus is associated with neurodegeneration and cerebrovascular disease. However, the precise mechanism underlying the effects of glucose management on brain abnormalities is not fully understood. The differential impacts of glucose alteration on brain changes in patients with and without cognitive impairment are also unclear. This cross-sectional study included 57 older type 2 diabetes patients with a diagnosis of Alzheimer's disease (AD) or normal cognition (NC). We examined the effects of hypoglycemia, postprandial hyperglycemia and glucose fluctuations on regional white matter hyperintensity (WMH) and brain atrophy among these patients. In a multiple regression analysis, postprandial hyperglycemia was independently associated with frontal WMH in the AD patients. In addition, postprandial hyperglycemia was significantly associated with brain atrophy, regardless of the presence of cognitive decline. Altogether, our findings indicate that postprandial hyperglycemia is associated with WMH in AD patients but not NC patients, which suggests that AD patients are more susceptible to postprandial hyperglycemia associated with WMH.
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Affiliation(s)
- Noriko Ogama
- Center for Comprehensive Care and Research on Memory Disorders, National Center for Geriatrics and Gerontology, Obu, Japan.,Department of Geriatric Medicine, National Center for Geriatrics and Gerontology, Obu, Japan.,Department of Community Healthcare and Geriatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Sakurai
- Center for Comprehensive Care and Research on Memory Disorders, National Center for Geriatrics and Gerontology, Obu, Japan.,Department of Cognition and Behavior Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shuji Kawashima
- Department of Geriatric Medicine, National Center for Geriatrics and Gerontology, Obu, Japan.,Department of Diabetes and Endocrinology, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Takahisa Tanikawa
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Haruhiko Tokuda
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Japan.,Medical Genome Center, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Shosuke Satake
- Department of Geriatric Medicine, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Hisayuki Miura
- Department of Home Care Coordinators, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Atsuya Shimizu
- Department of Cardiology, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Manabu Kokubo
- Department of Cardiology, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Shumpei Niida
- Medical Genome Center, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Kenji Toba
- Center for Comprehensive Care and Research on Memory Disorders, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Hiroyuki Umegaki
- Department of Community Healthcare and Geriatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masafumi Kuzuya
- Department of Community Healthcare and Geriatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Institutes of Innovation for Future Society, Nagoya University, Nagoya, Japan
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Shinohara S, Tanikawa T, Hada T, Funaki I, Nishida H, Matsuoka T, Otsuka F, Shamrai KP, Rudenko TS, Nakamura T, Mishio A, Ishii H, Teshigahara N, Fujitsuka H, Waseda S. High-Density Helicon Plasma Sources: Basics and Application to Electrodeless Electric Propulsion. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16896] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Shinohara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Tanikawa
- Tokai University, 4-1-1, Kita-kaname, Hiratsuka, Kanagawa 259-1292, Japan
| | - T. Hada
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - I. Funaki
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - H. Nishida
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Matsuoka
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - F. Otsuka
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. P. Shamrai
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. S. Rudenko
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. Nakamura
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - A. Mishio
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Ishii
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - N. Teshigahara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Fujitsuka
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - S. Waseda
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
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9
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Inokuchi J, Kuroiwa K, Naito S, Kakehi Y, Sugimoto M, Tanikawa T, Fujimoto H, Gotoh M, Masumori N, Ogawa O, Etoh M, Ohyama C, Yamaguchi A, Matsuyama H, Ichikawa T, Asano T, Takenaka A, Fujimoto K, Yamaguchi R, Habuchi T, Hashine K, Arai Y, Nagaoka A, Nishiyama H, Shinohara N, Niwakawa M, Egawa S, Ozono S, Kawano Y, Ishizuka O, Nishimura K, Tochigi T, Sugimura Y, Mizusawa J, Eba J. 801 The impact of ureteral ligation on clinical outcome during radical nephroureterectomy for upper urinary tract urothelial carcinoma: Multi-institutional case series study JCOG1110A. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/s1569-9056(16)60803-5] [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: 11/24/2022]
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10
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Tokuda H, Kuroyanagi G, Tsujimoto M, Enomoto Y, Matsushima-Nishiwaki R, Onuma T, Kojima A, Doi T, Tanabe K, Akamatsu S, Iida H, Ogura S, Otsuka T, Iwama T, Tanikawa T, Ishikawa K, Kojima K, Kozawa O. Release of Phosphorylated HSP27 (HSPB1) from Platelets Is Accompanied with the Acceleration of Aggregation in Diabetic Patients. PLoS One 2015; 10:e0128977. [PMID: 26046355 PMCID: PMC4457785 DOI: 10.1371/journal.pone.0128977] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 05/01/2015] [Indexed: 11/18/2022] Open
Abstract
We investigated the relationship between HSP27 phosphorylation and collagen-stimulated activation of platelets in patients with diabetes mellitus (DM). Platelet-rich plasma was prepared from blood of type 2 DM patients. The platelet aggregation was analyzed in size of aggregates by an aggregometer using a laser scattering method. The protein phosphorylation was analyzed by Western blotting. Phosphorylated-HSP27 and PDGF-AB released from platelets were measured by ELISA. The phosphorylated-HSP27 levels at Ser-78 and Ser-82 induced by collagen were directly proportional to the platelet aggregation. Total HSP27 levels in platelets were decreased concomitantly with the phosphorylation. The released HSP27 levels were significantly correlated with the phosphorylated levels of HSP27 in the platelets stimulated by 0.3 μg/ml collagen. The low dose collagen-stimulated release of HSP27 was detected but relatively small in healthy donors. The released levels of PDGF-AB were in parallel with the levels of released HSP27. Area under the curve (AUC) of small aggregation (9-25 μm) induced by 0.3 μg/ml collagen was inversely proportional to the levels of released HSP27. AUC of large aggregation (50-70 μm) was directly proportional to the levels of released HSP27. Exogenous recombinant phosphorylated- HSP27 hardly affected the aggregation or the released levels of PDGF-AB induced by collagen. These results strongly suggest that HSP27 is released from human platelets accompanied with its phosphorylation induced by collagen, which is correlated with the acceleration of platelet aggregation in type 2 DM patients.
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Affiliation(s)
- Haruhiko Tokuda
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- * E-mail:
| | - Gen Kuroyanagi
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masanori Tsujimoto
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yukiko Enomoto
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | - Takashi Onuma
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Akiko Kojima
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Anesthesiology and Critical Care Medicine, Matsunami General Hospital, Gifu, Japan
| | - Tomoaki Doi
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kumiko Tanabe
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shigeru Akamatsu
- Department of Anesthesiology and Critical Care Medicine, Matsunami General Hospital, Gifu, Japan
| | - Hiroki Iida
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shinji Ogura
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takanobu Otsuka
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Toru Iwama
- Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahisa Tanikawa
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Kei Ishikawa
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Kumi Kojima
- Department of Clinical Laboratory, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Osamu Kozawa
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
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Sakamoto Y, Hirai N, Tanikawa T, Yago M, Ishii M. Population genetic structure and Wolbachia infection in an endangered butterfly, Zizina emelina (Lepidoptera, Lycaenidae), in Japan. Bull Entomol Res 2015; 105:152-165. [PMID: 25499047 DOI: 10.1017/s0007485314000819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Zizina emelina (de l'Orza) is listed on Japan's Red Data List as an endangered species because of loss of its principal food plant and habitat. We compared parts of the mitochondrial and nuclear genes of this species to investigate the level of genetic differentiation among the 14 extant populations. We also examined infection of the butterfly with the bacterium Wolbachia to clarify the bacterium's effects on the host population's genetic structure. Mitochondrial and nuclear DNA analyses revealed that haplotype composition differed significantly among most of the populations, and the fixation index F ST was positively correlated with geographic distance. In addition, we found three strains of Wolbachia, one of which was a male killer; these strains were prevalent in several populations. There was linkage between some host mitochondrial haplotypes and the three Wolbachia strains, although no significant differences were found in a comparison of host mitochondrial genetic diversity with nuclear genetic diversity in Wolbachia-infected or -uninfected populations. These genetic analyses and Wolbachia infection findings show that Z. emelina has little migratory activity and that little gene flow occurs among the current populations.
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Affiliation(s)
- Y Sakamoto
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - N Hirai
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - T Tanikawa
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - M Yago
- The University Museum, The University of Tokyo,7-3-1 Hongo,Bunkyo-ku,Tokyo 113-0033,Japan
| | - M Ishii
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
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12
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Shinohara S, Tanikawa T, Motomura T. A segmented multi-loop antenna for selective excitation of azimuthal mode number in a helicon plasma source. Rev Sci Instrum 2014; 85:093509. [PMID: 25273728 DOI: 10.1063/1.4896041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A flat type, segmented multi-loop antenna was developed in the Tokai Helicon Device, built for producing high-density helicon plasma, with a diameter of 20 cm and an axial length of 100 cm. This antenna, composed of azimuthally splitting segments located on four different radial positions, i.e., r = 2.8, 4.8, 6.8, and 8.8 cm, can excite the azimuthal mode number m of 0, ±1, and ±2 by a proper choice of antenna feeder parts just on the rear side of the antenna. Power dependencies of the electron density ne were investigated with a radio frequency (rf) power less than 3 kW (excitation frequency ranged from 8 to 20 MHz) by the use of various types of antenna segments, and n(e) up to ~5 × 10(12) cm(-3) was obtained after the density jump from inductively coupled plasma to helicon discharges. Radial density profiles of m = 0 and ±1 modes with low and high rf powers were measured. For the cases of these modes after the density jump, the excited mode structures derived from the magnetic probe measurements were consistent with those expected from theory on helicon waves excited in the plasma.
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Affiliation(s)
- S Shinohara
- Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - T Tanikawa
- Research Institute of Science and Technology, Tokai University, 4-1-1, Kita-kaname, Hiratsuka, Kanagawa 259-1292, Japan
| | - T Motomura
- National Institute of Advanced Industrial Science and Technology (AIST), 807-1, Shuku-machi, Tosu, Saga 841-0052 Japan
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Choi JH, Shojiki K, Tanikawa T, Hanada T, Katayama R, Matsuoka T. Effect of sapphire nitridation and group-III source flow rate ratio on In-incorporation into InGaN grown by metalorganic vapor phase epitaxy. J Nanosci Nanotechnol 2014; 14:6112-6115. [PMID: 25936067 DOI: 10.1166/jnn.2014.8306] [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: 06/04/2023]
Abstract
In-composition of N-polar InGaN films on the sapphire substrate with the surface nitridation was investigated. By varying the ratio of the group-III source flow rate from 0.7 to 0.95, the In-composition and the surface morphologies of InGaN films were changed. The In-composition of N-polar InGaN films was affected by the strain relaxation and the surface morphologies.
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Cohen D, Stamnes S, Tanikawa T, Sommersten ER, Stamnes JJ, Lotsberg JK, Stamnes K. Comparison of discrete ordinate and Monte Carlo simulations of polarized radiative transfer in two coupled slabs with different refractive indices. Opt Express 2013; 21:9592-9614. [PMID: 23609670 DOI: 10.1364/oe.21.009592] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A comparison is presented of two different methods for polarized radiative transfer in coupled media consisting of two adjacent slabs with different refractive indices, each slab being a stratified medium with no change in optical properties except in the direction of stratification. One of the methods is based on solving the integro-differential radiative transfer equation for the two coupled slabs using the discrete ordinate approximation. The other method is based on probabilistic and statistical concepts and simulates the propagation of polarized light using the Monte Carlo approach. The emphasis is on non-Rayleigh scattering for particles in the Mie regime. Comparisons with benchmark results available for a slab with constant refractive index show that both methods reproduce these benchmark results when the refractive index is set to be the same in the two slabs. Computed results for test cases with coupling (different refractive indices in the two slabs) show that the two methods produce essentially identical results for identical input in terms of absorption and scattering coefficients and scattering phase matrices.
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Affiliation(s)
- D Cohen
- Department of Physics and Engineering Physics, Stevens Institute of Technology, 1 Castle point, Hoboken, NJ 07030, USA
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15
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Couprie ME, Benabderrahmane C, Betinelli P, Bouvet F, Buteau A, Cassinari L, Daillant J, Denard JC, Eymard P, Gagey B, Herbeaux C, Labat M, Lagarde B, Lestrade A, Loulergue A, Marchand P, Marlats JL, Miron C, Morin P, Nadji A, Polack F, Pruvost JB, Ribeiro F, Ricaud JP, Roy P, Tanikawa T, Roux R, Bielawski S, Evain C, Szwaj C, Lambert G, Lifschitz A, Malka V, Lehe R, Rousse A, Phuoc KT, Thaury C, Devanz G, Luong M, Carré B, LeBec G, Farvacque L, Dubois A, Lüning J. The LUNEX5 project in France. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/425/7/072001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Tobisawa Y, Maruyama T, Tanikawa T, Nakanishi K, Kurohane K, Imai Y. Establishment of recombinant hybrid-IgG/IgA immunoglobulin specific for Shiga toxin. Scand J Immunol 2011; 74:574-84. [PMID: 21883352 DOI: 10.1111/j.1365-3083.2011.02617.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Shiga toxin 1 produced by enterohaemorrhagic Escherichia coli is an AB(5) toxin that is involved in the life-threatening haemolytic-uraemic syndrome. The B subunits (Stx1B) are cell-binding subunits. We previously established mouse hybridoma cell line producing IgA and IgG monoclonal antibodies (mAbs) against Stx1B. Here, we cloned cDNAs encoding each of the heavy, light and joining (J) chains from the hybridoma cell lines by means of the 5' rapid amplification of cDNA ends (RACE) PCR method. Upon assignment of the variable regions of the heavy and light chains to known germline sequences, we found substantial somatic hypermutation in the complementarity-determining regions in both the IgA and IgG mAbs. We also established a hybrid-IgG/IgA heavy chain having variable regions of the IgG mAb by means of recombinant PCR methods. Upon transient expression of the hybrid-IgG/IgA heavy, IgG-associated light and J chains in COS-1 cells, the translated dimeric hybrid-IgG/IgA bound to immobilized Stx1B, as revealed on ELISA. The production of dimeric hybrid-IgG/IgA was revealed on immunoblot analysis. The dimeric hybrid-IgG/IgA inhibited the binding of digoxigenin-conjugated Stx1B to natural ligands (CD77) displayed on Burkitt's lymphoma cell line Ramos. These results indicate that the replacement of variable regions resulted in the production of more useful recombinant dimeric IgA against Stx1B.
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Affiliation(s)
- Y Tobisawa
- Laboratory of Microbiology and Immunology and the Global COE program, University of Shizuoka School of Pharmaceutical Sciences, Suruga-ku, Shizuoka, Japan
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17
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Tanikawa T, Shoji N, Sonohara N, Saito S, Shimura Y, Fukushima J, Inamoto T. Aging transition of the bacterial community structure in the chick ceca. Poult Sci 2011; 90:1004-8. [DOI: 10.3382/ps.2010-01153] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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18
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Tanikawa R, Tanikawa T, Hirashima M, Yamauchi A, Tanaka Y. Galectin-9 induces osteoblast differentiation through the CD44/Smad signaling pathway. Biochem Biophys Res Commun 2010; 394:317-22. [DOI: 10.1016/j.bbrc.2010.02.175] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Accepted: 02/28/2010] [Indexed: 11/24/2022]
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Dunsiger SR, Carlo JP, Goko T, Nieuwenhuys G, Prokscha T, Suter A, Morenzoni E, Chiba D, Nishitani Y, Tanikawa T, Matsukura F, Ohno H, Ohe J, Maekawa S, Uemura YJ. Spatially homogeneous ferromagnetism of (Ga, Mn)As. Nat Mater 2010; 9:299-303. [PMID: 20305642 DOI: 10.1038/nmat2715] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Accepted: 01/28/2010] [Indexed: 05/29/2023]
Abstract
Mn-doped GaAs is a ferromagnetic semiconductor, widely studied because of its possible application for spin-sensitive 'spintronics' devices. The material also attracts great interest in fundamental research regarding its evolution from a paramagnetic insulator to a ferromagnetic metal. The high sensitivity of its physical properties to preparation conditions and heat treatments and the strong doping and temperature dependencies of the magnetic anisotropy have generated a view in the research community that ferromagnetism in (Ga, Mn)As may be associated with unavoidable and intrinsic strong spatial inhomogeneity. Muon spin relaxation (muSR) probes magnetism, yielding unique information about the volume fraction of regions having static magnetic order, as well as the size and distribution of the ordered moments. By combining low-energy muSR, conductivity and a.c. and d.c. magnetization results obtained on high-quality thin-film specimens, we demonstrate here that (Ga, Mn)As shows a sharp onset of ferromagnetic order, developing homogeneously in the full volume fraction, in both insulating and metallic films. Smooth evolution of the ordered moment size across the insulator-metal phase boundary indicates strong ferromagnetic coupling between Mn moments that exists before the emergence of fully itinerant hole carriers.
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Shimada M, Katoh M, Adachi M, Tanikawa T, Kimura S, Hosaka M, Yamamoto N, Takashima Y, Takahashi T. Transverse-longitudinal coupling effect in laser bunch slicing. Phys Rev Lett 2009; 103:144802. [PMID: 19905574 DOI: 10.1103/physrevlett.103.144802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Indexed: 05/28/2023]
Abstract
We report turn-by-turn observation of coherent synchrotron radiation (CSR) produced by the laser bunch slicing technique at an electron storage ring operated with a small momentum compaction factor. CSR emission was intermittent, and its interval depended strongly on the betatron tune. This peculiar behavior of the CSR could be interpreted as a result of coupling between the transverse and longitudinal motion of the electrons. This is the first observation of such an effect, which would be important not only for controlling the CSR emission but also for generating and transporting ultrashort electron bunches or electron bunches with microdensity structures in advanced accelerators.
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Affiliation(s)
- M Shimada
- High Energy Accelerator Research Organization, KEK, Tsukuba, 305-0801, Japan.
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Tanikawa T, Okada Y, Tanikawa R, Tanaka Y. Advanced Glycation End Products Induce Calcification of Vascular Smooth Muscle Cells through RAGE/p38 MAPK. J Vasc Res 2009; 46:572-80. [DOI: 10.1159/000226225] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2008] [Accepted: 11/08/2008] [Indexed: 11/19/2022] Open
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Tanikawa T, Ishikawa T, Maekawa T, Kuronane K, Imai Y. Characterization of monoclonal immunoglobulin a and g against shiga toxin binding subunits produced by intranasal immunization. Scand J Immunol 2008; 68:414-22. [PMID: 18782271 DOI: 10.1111/j.1365-3083.2008.02153.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Immunoglobulin A (IgA) is considered to play a major role in protection of the mucosal surface. However, its immunological and biological properties have not been extensively studied because the production of IgA class monoclonal antibodies (mAbs) is difficult. We compared the properties of IgA and IgG mAbs against Shiga toxin B subunits (Stx1B). These mAbs were secreted from hybridomas that had been produced from mice after intranasal immunization with recombinant Stx1B and cholera toxin. The dose response curves for the binding of the IgA (clone G2G7) and IgG (clone D11C6) mAbs to immobilized Stx1B were similar, as revealed on ELISA. The majority of the IgA mAb formed dimers while the IgG mAb was monomeric, as judged by immunoblot analysis. The IgG mAb completely inhibited the binding of Stx1B to Burkitt's lymphoma cell line Ramos, while the inhibition by the IgA mAb was only partial. The IgG mAb was able to neutralize the cytotoxicity of Stx1 holotoxin towards Vero cells, whereas the IgA mAb was not. The binding affinity of each binding site was compared by means of surface plasmon resonance analysis involving a capture method, with which the binding of soluble Stx1B to immobilized mAb was detected. The association rate was similar but the dissociation rate was twofold faster in the case of the IgA mAb, resulting in twofold higher affinity of the IgG mAb. These results suggest that one can obtain high affinity IgA mAb but toxin neutralization is another challenge as to therapeutic antibodies of the IgA class.
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Affiliation(s)
- T Tanikawa
- Laboratory of Microbiology and Immunology and the Global COE Program, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka-shi, Shizuoka, Japan
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Tanikawa T, Hikosaka T, Honda Y, Yamaguchi M, Sawaki N. Growth of semi-polar (11-22)GaN on a (113)Si substrate by selective MOVPE. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200779236] [Citation(s) in RCA: 56] [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: 11/12/2022]
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24
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Hikosaka T, Tanikawa T, Honda Y, Yamaguchi M, Sawaki N. Fabrication and properties of semi-polar (1-101) and (11-22) InGaN/GaN light emitting diodes on patterned Si substrates. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200778642] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Tanikawa R, Tanikawa T, Okada Y, Nakano K, Hirashima M, Yamauchi A, Hosokawa R, Tanaka Y. Interaction of galectin-9 with lipid rafts induces osteoblast proliferation through the c-Src/ERK signaling pathway. J Bone Miner Res 2008; 23:278-86. [PMID: 17907924 DOI: 10.1359/jbmr.071008] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
UNLABELLED Galectin-9 is a beta-galactoside-binding lectin expressed in various tissues, including bone. The role of galectin-9 in human osteoblasts, however, remains unclear. This study showed that galectin-9 interacts with lipid rafts and induces osteoblast proliferation through the c-Src/ERK signaling pathway. INTRODUCTION Galectin-9 is a beta-galactoside-binding lectin that modulates many biological functions by interacting with particular carbohydrates attached to proteins and lipids. However, the role of galectin-9 in bone metabolism and osteoblast proliferation remains unclear. This study investigated the effects of galectin-9 on osteoblast proliferation and its signaling mechanisms. MATERIALS AND METHODS The effect of galectin-9 on osteoblast proliferation was tested by measuring the conversion of tetrazolium salt WST-8 to formazan. Protein phosphorylation was assayed by western blotting and confocal microscopy was used to localize lipid rafts. RESULTS Galectin-9-induced proliferation of the obtained osteoblasts in a dose-dependent manner, whereas galectin-1, -3, and -4 did not. Galectin-9-induced phosphorylation of c-Src and subsequent ERK1/ERK2 in the osteoblasts. The galectin-9-induced phosphorylation and proliferation were inhibited by PP2, a selective inhibitor of c-Src. Galectin-9-induced clustering of lipid rafts detected by cholera toxin B (CTB; binding the raft-resident ganglioside GM1) using confocal microscopy. Cross-linking of the GM1 ganglioside with CTB by anti-CTB antibody-induced phosphorylation of c-Src, whereas disruption of galectin-9-induced lipid rafts by beta-methylcyclodextrin reduced c-Src phosphorylation and proliferation of the cells. CONCLUSIONS These results suggest that galectin-9, but not other galectins, induced proliferation of human osteoblasts through clustering lipid rafts on membrane and subsequent phosphorylation of the c-Src/ERK signaling pathway.
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Affiliation(s)
- Rena Tanikawa
- First Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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26
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Okada Y, Tanikawa T, Iida T, Tanaka Y. [Vascular injury by glucocorticoid; involvement of apoptosis of endothelial cells]. Clin Calcium 2007; 17:872-877. [PMID: 17548926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Idiopathic osteonecrosis of the femoral head (IONF) is known to be caused by tissue ischemia, which is mainly associated with high-dose glucocorticoid (GC) used for the treatments of systemic autoimmune diseases. However, precise pathological mechanisms of IONF remain unclear. We first found that hypoxia-inducible factor (HIF) -1alpha, a major transcription factor rapidly induced under hypoxic conditions, was highly expressed on endothelial cells of femoral head in patients with IONF. Transfection of HIF-1alpha induced p21-mediated arrest of cell cycle and subsequent apoptosis in endothelial cells. High dose GC also induced cell cycle arrest and apoptosis. Furthermore, there were additional effects between HIF-1alpha and high dose GC for the growth arrests and apoptosis of the cells. However, C-type natriuretic peptide (CNP) inhibited both cell cycle arrest and apoptosis of the endothelial cells in a concentration-dependent manner. There results indicate that hypoxia and high-dose GC play a pivotal role for vascular injury and that CNP could have a potential to protect the vascular injury seen in patients with IONF.
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Affiliation(s)
- Yosuke Okada
- University of Occupational and Environmental Health, Japan
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Okada Y, Nishida K, Tanikawa T, Hashimoto O, Tanaka Y. [Diabetic vascular calcification and abnormal bone metabolism: the relation between bone and vascular]. Clin Calcium 2006; 16:1316-1320. [PMID: 16883039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
High-frequency severe atherosclerosis/calcinosis is observed in diabetes mellitus and chronic dialysis, which leads to cardiovascular events. However, the effective treatment for suppressing the progression of vascular calcification has not been established. Here we review the mechanism of vascular calcification and present our findings that a first generation of bisphosphonate is useful in prevention of vascular calcification in diabetes and chronic renal failure.
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Affiliation(s)
- Yosuke Okada
- University of Occupational and Environmental Health, First Department of Internal Medicine
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Abstract
Graves' ophthalmopathy is the most frequent extrathyroidal manifestation of Graves' disease. Although glucocorticoids and orbital radiotherapy have been used and are effective for the disease, we often experience cases refractory to either therapy. We report here a case that did not respond satisfactorily to either therapy and was later successfully treated by intravenous cyclophosphamide (IV-CY) pulse therapy. A 31 year old woman presented with typical Graves' disease and ophthalmopathy. After establishing a euthyroid state, she received intravenous glucocorticoid pulse therapy and orbital radiotherapy. Although this induced the resolution of the ophthalmopathy, it was temporary and thyroid-stimulating antibody (TSAb) increased to high titers, associated with relapse of ophthalmopathy 2 months after the treatment. Four courses of IV-CY pulse therapy were administered, which resulted in complete improvement of the symptoms and normalization of the TSAb titers. We suggest that IV-CY pulse therapy might be useful for Graves' ophthalmopathy, especially for patients refractory to glucocorticoid pulse therapy.
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Affiliation(s)
- Takahisa Tanikawa
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan. Yahatanishi-ku, Kitakyushu 807-8555, Japan
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Mine S, Okada Y, Tanikawa T, Kawahara C, Tabata T, Tanaka Y. Increased expression levels of monocyte CCR2 and monocyte chemoattractant protein-1 in patients with diabetes mellitus. Biochem Biophys Res Commun 2006; 344:780-5. [PMID: 16631114 DOI: 10.1016/j.bbrc.2006.03.197] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [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: 03/21/2006] [Accepted: 03/29/2006] [Indexed: 02/02/2023]
Abstract
Increased monocyte recruitment into subendothelial space in atherosclerotic lesions is one of the hallmarks of diabetic angiopathy. The aim of this study was to determine the state of peripheral blood monocytes in diabetes associated with atherosclerosis. Diabetic patients treated with/without an oral hypoglycemic agent and/or insulin for at least 1 year were recruited (n=106). We also included 24 non-diabetic control subjects. We measured serum levels of monocyte chemoattractant protein (MCP)-1, fasting plasma glucose (FPG), HbA1c, total cholesterol, triglyceride, body mass index (BMI), high sensitivity CRP (hs-CRP) and evaluated CCR2, CD36, CD68 expression on the surface of monocytes. Serum MCP-1 levels were significantly (p<0.05) higher in diabetic patients than in normal subjects. In diabetic patients, serum MCP-1 levels correlated significantly with FPG, HbA1c, triglyceride, BMI, and hs-CRP. The expression levels of CCR2, CD36, and CD68 on monocytes were significantly increased in diabetic patients and were more upregulated by MCP-1 stimulation. Our data suggest that elevated serum MCP-1 levels and increased monocyte CCR2, CD36, CD68 expression correlate with poor blood glucose control and potentially contribute to increased recruitment of monocytes to the vessel wall in diabetes mellitus.
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Affiliation(s)
- Shinichiro Mine
- First Department of Internal Medicine, University of Occupational and Environmental Health, Japan
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Nishida K, Okada Y, Mori H, Hirose A, Tanikawa T, Arao T, Morita E, Tanaka Y. [Marked weight loss in two female patients with prader-willi syndrome by behavioral modification and improvement of the environment]. J UOEH 2006; 28:65-73. [PMID: 16541741 DOI: 10.7888/juoeh.28.65] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Prader-Willi Syndrome (PWS) is a complex neurogenetic disorder with considerable clinical variability, and is considered to be mainly the result of a hypothalamic defect. PWS is characterized by hyperphagia, obesity, mental retardation and hypogonadism from a young age. Hyperphagia is one of the most serious problems, which is organic in origin, inducing morbid obesity and leading to respiratory failure. Most studies attempting to control obesity in children with PWS by dietary management reported limited success due to difficulty in controlling foraging and food stealing. Here we report 16- and 20-year-old female patients with PWS who showed marked weight loss and improvement of respiratory failure by behavior modification and improvement of the environment.
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Affiliation(s)
- Keiko Nishida
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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Kishikawa H, Okada Y, Hirose A, Tanikawa T, Kanda K, Tanaka Y. Successful treatment of insulinoma by a single daily dose of octreotide in two elderly female patients. Endocr J 2006; 53:79-85. [PMID: 16543676 DOI: 10.1507/endocrj.53.79] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report two cases of insulinoma in advanced age patients considered unsuitable for surgery, in whom single daily doses of octreotide successfully improved hypoglycemia and hyperinsulinemia. The biological half-life of octreotide is about 100 min, hence it is customary to use two or three administrations per day to prevent hypoglycemia in insulinoma patients. The first case was a 76-year-old woman who presented with hyperinsulinemic hypoglycemia. Computed tomography (CT) and magnetic resonance imaging did not identify a tumor in the pancreas but a 1.5-cm tumor was found in the pancreatic body on abdominal angiography and selective arterial calcium stimulation and hepatic venous sampling (ASVS) were compatible with insulinoma. The patient refused surgery, but was successfully treated with octreotide at 50 microg subcutaneous injection once daily. Since the treatment was started (1 year), she has not suffered hypoglycemia. Case 2 was an 85-year-old woman who presented with hyperinsulinemic hypoglycemia. CT identified a 1.5-cm tumor in the pancreatic uncus, but she was considered unsuitable for surgery due to advanced age, obesity and cardiopulmonary dysfunction. Octreotide at 100 microg subcutaneous injection once daily prevented further hypoglycemic attacks, but two months later, postprandial plasma glucose was elevated. Octreotide was gradually reduced to 50 microg once daily. Three years have passed since the treatment without any hypoglycemic attack. Successful treatment with octreotide once daily could be due to old-age-related slow metabolism and could be potentially considered as the treatment of choice for elderly patients with insulinoma especially those considered unsuitable for surgery.
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Affiliation(s)
- Hirofumi Kishikawa
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Imai Y, Ishikawa T, Tanikawa T, Nakagami H, Maekawa T, Kurohane K. Production of IgA monoclonal antibody against Shiga toxin binding subunits employing nasal-associated lymphoid tissue. J Immunol Methods 2005; 302:125-35. [PMID: 15992815 DOI: 10.1016/j.jim.2005.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 01/31/2005] [Revised: 05/05/2005] [Accepted: 05/11/2005] [Indexed: 01/21/2023]
Abstract
We established an IgA monoclonal antibody (mAb) against Shiga toxin 1 B subunits (Stx1B) from mouse nasal-associated lymphoid tissues (NALT) of BALB/c mice. We have developed an improved protocol in which cross-linked Stx1B is intranasally administered together with cholera toxin. Surface IgA-positive NALT lymphocytes from mice immunized in this manner were enriched and then fused with mouse myeloma cells to produce hybridoma cells. Hybridoma culture supernatants were examined to see if they contain IgA against Stx1B and if they can inhibit carbohydrate recognition by Stx1B. For the latter purpose, we prepared carbohydrate ligands in which globotriose is present on the poly-lysine backbone. The established IgA mAb exhibited saturable and dose-dependent binding to the immobilized Stx1B. Inversely, the binding of the carbohydrate ligands to the immobilized Stx1B was inhibited by the mAb pretreatment. Immunoblotting and SDS-PAGE analysis revealed dimeric IgA. The IgA mAb inhibited the binding of digoxigenin-conjugated Stx1B to natural ligands displayed on a Burkitt's lymphoma cell line, Ramos. These results suggested that surface IgA-positive B cells in the inductive sites of the mucosal immune system in the upper respiratory tract are a potent source for producing IgA mAb against protein antigens with weak immunogenicity such as Stx1B.
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Affiliation(s)
- Y Imai
- Department of Microbiology and COE Program in the 21st Century, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka-shi, Shizuoka 422-8526, Japan.
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Tanikawa T, Abe H, Tanaka Y, Nakashima Y. Cardiac autonomic balance and QT dispersion during head-up tilt testing in diabetics with and without sensory neuropathy. Clin Exp Hypertens 2004; 26:137-44. [PMID: 15038624 DOI: 10.1081/ceh-120028551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Cardiovascular autonomic dysfunction is associated with higher mortality in diabetics. However, detection methods of early cardiac diabetic dysautonomia, and its correlation with severity of sensory neuropathy, have not been described. METHODS We analyzed the heart rate variability (HRV) by spectral analysis and QT dispersion in 23 diabetics with and without sensory neuropathy, and in 5 age-matched controls, in the supine position and during head-up tilt testing (HUT). Diabetics were divided into 3 groups according to the degree of sensory neuropathy. RESULTS In the spectral analysis of HRV, the high frequency components in the supine position decreased as a function of severity of the neuropathy. High frequency in diabetics was significantly decreased in the supine position, even in absence of sensory neuropathy. The low/high frequency ratio (L/H) in the supine position was similar among controls and the 3 patient groups. L/H in diabetics with moderate or severe neuropathy did not increase from the supine to the upright position. Baseline QT dispersion increased proportionally to the severity of sensory neuropathy and, in patients without apparent sensory neuropathy, QT dispersion increased significantly during HUT. CONCLUSIONS The spectral analysis of HRV and measurements of QT dispersion, before and during HUT, were reliable detection methods of early abnormalities in autonomic balance and may predict a risk of sudden cardiac death in diabetics.
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Affiliation(s)
- Takahisa Tanikawa
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Yahatanishi, Kitakyushu, Japan
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Abstract
We report a 52-year-old woman who was noted to have elevated alkaline phosphatase (ALP), hypercalcemia (Ca: 11.7 mg/dL), and intact parathyroid hormone (intact PTH: 643.1 pg/mL), and then referred to our hospital with suspected hyperparathyroidism. Ultrasound examination of the neck and magnetic resonance imaging showed a mass region in the posterior aspect of the left lobe of the thyroid, and Tl-Tc subtraction scintigraphy showed Tl uptake at the same location. Based on laboratory and imaging studies, she was diagnosed with primary hyperparathyroidism. The excised parathyroid was a large mass measuring 6.8 x 2.8 x 1.9 cm in diameter and weighing 15.4 g. It was soft, covered with a thin capsule, did not infiltrate the thyroid parenchyma, and showed no evidence of malignant process. Histopathological examination showed that it was clear cell adenoma. There was no evidence of metastasis from the parathyroid tumor in other organs. The post-operative course was excellent, and serum PTH, Ca, and ALP levels returned to normal. Among parathyroid tumors, large adenomas are commonly considered to be more likely malignant, but in this case it was benign despite measuring more than 6 cm in diameter. The histopathological type of the adenoma was clear cell adenoma, a very rare type. We report a clear cell adenoma of the parathyroid gland, which has not been described previously in Japan.
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Affiliation(s)
- Kazuko Kanda
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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35
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Abstract
We experienced a 57-year-old female with adult-onset non-congenital idiopathic acro-osteolysis combined with proximal symphalangism. At the age of 36, she developed severe pain and swelling of the toe base of both feet and underwent Clayton surgery. However, the size of her toes diminished progressively over the 5-year period after surgery. At the age of 41, she suffered pain and swelling of the proximal interphalangeal (PIP) joints of fingers of both hands. These PIP joints became rigid and inflexible. Subsequently, she noticed shortening of the little finger of both hands, followed later by shortening of the index, middle, and ring fingers. At the age of 57, the thumbs began to shorten. Laboratory and endocrinological examinations were not abnormal. Finally, we diagnosed her with acro-osteolysis combined with proximal symphalangism by radiological examination. In this case, previously unreported mutations of the Noggin gene were identified. This is the first case report of adult-onset, non-congenital idiopathic acro-osteolysis combined with proximal symphalangism.
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Affiliation(s)
- Takahisa Tanikawa
- First Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Fukuoka, Japan
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36
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Kawahara C, Okada Y, Tanikawa T, Fukusima A, Misawa H, Tanaka Y. Severe hypercalcemia and hypernatremia associated with calcipotriol for treatment of psoriasis. J Bone Miner Metab 2004; 22:159-62. [PMID: 14999528 DOI: 10.1007/s00774-003-0465-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2003] [Accepted: 07/16/2003] [Indexed: 11/29/2022]
Affiliation(s)
- Chie Kawahara
- First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, 1-1 Iseigaoka, Yahatanishi-ku, 807-8555, Kitakyushu, Japan.
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37
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Abstract
Graves' ophthalmopathy in hypothyroid state is called Hypothyroid Graves' Disease, which is a comparatively rare disease. We experienced a case of a 57 year old man with severe exophthalmos and diplopia, which are typical symptoms of Graves' opthalmopathy, and with an extremely high thyroid-stimulating antibody(TSAb) level. He also had a firm diffuse goiter and hypothyroidism with positive anti-thyroglobulin and anti-thyroid microsomal antigen. These findings suggested Hashimoto's thyroiditis. Severity of ophthalmopathy and TSAb level were improved during replacement therapy with T4. Although a thyroid stimulation-blocking antibody was also detected in this patient, we thought that hypothyroidism in this case was based on destructive change in the thyroid with Hashimoto's thyroiditis. Therefore, we should be aware of the fact that there are cases of hypothyroidism with Graves' ophthalmopathy and a high level of TSAb.
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Affiliation(s)
- Miho Nakai
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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38
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Fukushima A, Okada Y, Tanikawa T, Onaka T, Tanaka A, Higashi T, Tsukada J, Tanaka Y. Primary bilateral adrenal intravascular large B-cell lymphoma associated with adrenal failure. Intern Med 2003; 42:609-14. [PMID: 12879956 DOI: 10.2169/internalmedicine.42.609] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We report a rare case of bilateral primary adrenal non-Hodgkin's lymphoma with adrenal failure. A 66-year-old woman developed symptoms of adrenal failure. The cause of adrenal failure was suspected to be malignant lymphoma based on the high levels of serum soluble interleukin-2 receptor and LDH. Bilateral adrenalectomy was performed and pathological examination showed intravascular large B-cell lymphoma (IVL). Although complete remission was achieved, recurrence occurred three months later with brain metastases. IVL should be suspected in patients with bilateral adrenal tumors who present with rapidly progressive adrenal failure.
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Affiliation(s)
- Ayumi Fukushima
- First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu
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39
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Fukushima A, Okada Y, Tanikawa T, Kawahara C, Misawa H, Kanda K, Morita E, Sasano H, Tanaka Y. Virilizing adrenocortical adenoma with Cushing's syndrome, thyroid papillary carcinoma and hypergastrinemia in a middle-aged woman. Endocr J 2003; 50:179-87. [PMID: 12803238 DOI: 10.1507/endocrj.50.179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We report a rare case of virilizing adrenocortical adenoma complicated with Cushing's syndrome, thyroid papillary carcinoma and hypergastrinemia. A 45-year-old woman had a history of amenorrhea for 10 years, hypertension for 8 years, and diabetes mellitus for 3 years. Physical examination showed a masculinized woman with severe hirsutism, male-like baldness, deep voice, acne in the precordia, and clitorism. Plasma testosterone, DHEA-S and urinary 17-KS were high, and plasma cortisol level was it at the upper limit of the normal range, but it did not show a diurnal rhythm nor was suppressed by 2 and 8 mg of dexamethasone. Abdominal CT scan showed a left adrenal tumor (4.5 cm in size). Adrenal scintigram revealed uptake of the tracer on the left side, and plasma cortisol concentration was high in a blood sample from the left adrenal vein. Left adrenalectomy was performed. Histopathological features of resected adrenal tumor were consistent with those of adrenocortical adenoma, consisting of tumor cells with eosinophilic compact cytoplasm. Immunohistochemical staining for steroidogenic enzymes showed reactivity for P450sec, 3 beta-HSD, P450c17, P450c21 and P450c11. Plasma testosterone and cortisol levels decreased to the normal range postoperatively. The patient was also found to have a papillary thyroid carcinoma and hypergastrinemia. Our patient is a rare case of virilizing adrenocortical adenoma associated with Cushing's syndrome, thyroid papillary carcinoma, and hypergastrinemia.
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Affiliation(s)
- Ayumi Fukushima
- First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu 807-8555, Japan
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40
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Tanikawa T, Okada Y, Zeki K, Kanda K, Morita E, Tanaka Y. [A case of hypothyroidism due to hashimoto disease that presented elevations of free T3 and free T4 by thyroid hormone autoantibodies]. J UOEH 2002; 24:423-7. [PMID: 12506859 DOI: 10.7888/juoeh.24.423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When we commonly evaluate the thyroid function, we measure TSH, free T3 and free T4. However, there are some cases that are difficult to diagnose because of the existence of thyroid hormone autoantibodies. We experienced a case of a 14-year-old girl with diffuse struma whose TSH, free T3 and free T4 were elevated by detected with Amerlex M free T3 and free T4 kits, although she did not have any symptoms. As the free T4 level was low by the equilibrium dialysis method, we diagnosed this case as hypothyroidism due to chronic thyroiditis. Because we found thyroid hormone antibodies in her serum, we thought that this case presented pseudoelevations of free T3 and free T4 by the analogue method.
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Affiliation(s)
- Takahisa Tanikawa
- First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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41
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Saito K, Suwa M, Nakagawa Y, Utsugi R, Tanikawa T, Tomita Y, Takahashi K. Study of pharmacokinetic parameters of tacrolimus by different oral administration periods in renal transplantation. Transplant Proc 2002; 34:1726-9. [PMID: 12176553 DOI: 10.1016/s0041-1345(02)02999-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- K Saito
- Division of Urology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi, Niigata, 951-8510 Japan
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42
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Arao T, Okada Y, Tanikawa T, Inatomi H, Shuin T, Fujihira T, Yamashita H, Tanaka Y. A case of von Hippel-Lindau disease with bilateral pheochromocytoma, renal cell carcinoma, pelvic tumor, spinal hemangioblastoma and primary hyperparathyroidism. Endocr J 2002; 49:181-8. [PMID: 12081237 DOI: 10.1507/endocrj.49.181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A rare case of von Hippel-Lindau (VHL) disease with bilateral pheochromocytomas, right renal cell carcinoma, right pelvic carcinoma, spinal hemangioblastoma and primary hyperparathyroidism is described. A 78-year-old woman had a history of hypertension from her forties. She suffered from headache and body weight loss. Abdominal CT revealed bilateral adrenal tumors and right external renal tumors enhanced in early stage. MIBG scintigraphy exhibited a high accumulation of tracer in both adrenal glands. On the basis of the radiographic findings and endocrinological results, the patient was diagnosed as having bilateral pheochromocytomas and right renal cell carcinoma. A bilateral adrenectomy was performed, followed by surgery for resection of the renal cell carcinoma. The other resected right kidney showed a clear cell subtype that was determined to be renal cell carcinoma, and proved that the pelvic tumor was transient cell carcinoma. Spinal MRI showed spinal hemangioblastoma. von Hippel-Lindau (VHL) gene mutation for the patient was found. We diagnosed the patient as VHL because of the existence of spinal hemangioma and a VHL disease gene. Parathyroid echo revealed a hypoechoic space on the back of the left lobe, and serum calcium and intact PTH to be elevated. The patient was diagnosed as primary hyperparathyroidism. We report the first case of a patient with VHL disease complicated with bilateral pheochromocytomas, right renal cell carcinoma, right renal pelvic carcinoma and primary hyperparathyroidism. The life expectancy of affected individuals has been less than 50 years. Since the prognosis may be improved by an early diagnosis, affected individuals with VHL complexes should undergo cranial, spinal MRI and abdomen CT. The families may benefit from presymptomatic detection of affected gene carriers and the exclusion of at-risk family members by negative test results.
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Affiliation(s)
- Tadashi Arao
- First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu
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43
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Tanikawa T, Asaka T, Kashimura M, Misawa Y, Suzuki K, Sato M, Kameo K, Morimoto S, Nishida A. Synthesis and antibacterial activity of acylides (3-O-acyl-erythromycin derivatives): a novel class of macrolide antibiotics. J Med Chem 2001; 44:4027-30. [PMID: 11708904 DOI: 10.1021/jm015566s] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Introduction of an acyl group to the 3-O-position of erythromycin A derivatives instead of L-cladinose led to a novel class of macrolide antibiotics that we named "acylides". The 3-O-nitrophenylacetyl derivative TEA0777 showed significantly potent activity against not only erythromycin-susceptible Gram-positive pathogens but also inducibly macrolides-lincosamides-streptogramin B (MLS(B))-resistant Staphylococcus aureus and efflux-resistant Streptococcus pneumoniae. These results indicated that acylides have potential as next-generation macrolide antibiotics.
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Affiliation(s)
- T Tanikawa
- Medicinal Research Laboratories, Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Saitama-shi 330-8530, Japan.
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44
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Tanikawa T. [Prostate cancer]. Rinsho Byori 2001; 49:955-62. [PMID: 11769471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Carcinoma of the prostate constitutes a major and escalating international health problem. In many developed countries prostate cancer is the most commonly diagnosed malignancy in men, and seems to overtake lung cancer as major cause of cancer mortality. In Japan mortality of the prostate cancer is relatively low, but future incidence and mortality of the prostate cancer will be dramatically increased. Risk factors of the prostate cancer were well known as Western-type lifestyle and diet. Carcinoma of the prostate are detected early by prostatic specific antigen and systematic trans-rectal ultrasonography guided prostatic needle biopsy. Once prostate cancer has been diagnosed in a patient, histologically graded, and staged as accurately as possible, clinicians are duty bound to offer the best advice about treatment options, even though the risks and benefits of competing therapies. Radical prostatectomy and radiation therapy are known as treatment of localized prostate cancer, antiandrogen therapy is known as treatment of advanced prostate cancer. Alternative approaches utilizing, for example microable inhibitors, inhibitor of growth factors and gene therapy also hold exciting promise.
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Affiliation(s)
- T Tanikawa
- Department of Urology, Niigata University School of Medicine, Niigata 951-8510
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45
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Sugano S, Kobayashi T, Tanikawa T, Kawakami Y, Kojima H, Nakamura K, Uchida A, Morishima N, Tamai Y. Suppression of CYP3A2 mRNA expression in the warfarin-resistant roof rat, Rattus rattus: possible involvement of cytochrome P450 in the warfarin resistance mechanism. Xenobiotica 2001; 31:399-407. [PMID: 11531004 DOI: 10.1080/00498250110060932] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
1. The continual use of warfarin as a rodenticide has caused the development of populations of warfarin-resistant roof rat. To study the biochemical mechanism of warfarin resistance, the mRNA expression levels of the major P450 forms in the warfarin-resistant and -susceptible roof rat liver following exposure to warfarin were quantified by competitive RT-PCR. 2. The constitutive levels of CYP2C11 and CYP3A2 mRNAs in the warfarin-resistant and -susceptible roof rat were extremely low compared with those in the STD rat. In response to warfarin administration, the CYP3A2 mRNA level in the warfarin-susceptible rat increased to about 3-fold of that before the treatment, whereas in the warfarin-resistant roof rat, CYP3A2 mRNA remained at a low level. 3. The present results suggest the possibility that reduced synthesis of CYP3A2 mRNA is involved in the warfarin-resistant mechanism in the roof rat.
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Affiliation(s)
- S Sugano
- Department of Biochemistry, School of Nursing, Kitasato University, Sagamihara, Kanagawa, Japan.
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46
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Abstract
E-cadherin (ECD) is a homophilic Ca(2+)-dependent adhesion molecule associated with cell-to-cell interactions and normal growth. Recent reports have suggested that decrease or loss of ECD facilitates tumor progression and/or metastasis. ECD functions in a complex called an adherens junction, which includes several other proteins including alpha- and beta-catenin. In the present study, fresh-frozen sections from 32 testis cancers, 16 seminomas and 16 non-seminomatous germ cell tumors (NSGCT), were examined immunohistochemically. E-cadherin was not expressed on normal germ cells, but expressed on 3 (18.8%) of 16 seminomas and 10 (62.5%) of 16 NSGCTs, mainly on the epithelial component of teratoma cells. alpha-Catenin was detected on 0 (0%) of 13 seminomas and 4 (25%) of 16 NSGCTs. beta-Catenin was detected on 10 (71.4%) of 14 seminomas and 13 (81.2%) of 16 NSGCTs. ECD was detected significantly more frequently on NSGCTs than on seminomas. Immunoblot analysis confirmed the expression of ECD and beta-catenin in NSGCTs. Expression of ECD and catenins may reflect the degree of differentiation and provide some information on the character of the tumor.
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Affiliation(s)
- T Saito
- Department of Urology, Niigata Cancer Center Hospital, Niigata, Japan.
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47
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Sugimura A, Kanatsuka H, Tanikawa T, Ong BH, Shirato K. Effect of diadenosine tetraphosphate (AP4A) on coronary arterial microvessels in the beating canine heart. Jpn Circ J 2000; 64:868-75. [PMID: 11110433 DOI: 10.1253/jcj.64.868] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Diadenosine tetraphosphate (AP4A) can be released from activated platelets and the present study examined its effect on coronary arterial microvessels. The role of purinoceptors in the coronary microcirculation in vivo was also investigated. In open chest dogs, coronary arterioles were observed using a microscope with a floating objective. In Protocol 1, AP4A (1, 10, 100 and 1,000 micromol/L) was superfused onto the heart surface before and during the superfusion of 10 micromol/L of 8-phenyltheophylline (8-PT), a P1 purinoceptor blocker. In Protocol 2, AP4A (0.1, 1, 10, and 100 nmol x kg(-1) x min(-1)) was infused into the left anterior descending coronary artery before and during the superfusion of 10 micromol/L of 8-PT. In addition to 8-PT, 30 micromol/L of pyridoxalphosphate-6-azophenyl 2',4'-disulphonic acid (PPADS), a P2X purinoceptor blocker in Protocol 3, or 300 micromol/L of N(omega)-nitro-L-arginine (LNNA) in Protocol 4, was continuously superfused, and 4 doses of AP4A were cumulatively superfused as in Protocol 1. In Protocol 5, 10 micromol/L of alpha,beta-methylene ATP, an agonist of P2X purinoceptors, was superfused for 60 min. Superfused AP4A dilated arterioles in a dose-dependent manner. The magnitude of dilatation was greater in smaller arterioles (small vessel < or = 150 microm: 24.5+/-2.2% vs large vessel > 150 microm: 10.6+/-1.5% at a dose of 1,000 micromol/L, p<0.001). On the other hand, intraluminally applied AP4A also dilated arterioles, but no size dependency was shown. In the presence of 8-PT, vasodilatory responses to superfused and intraluminally applied AP4A were attenuated and the lower doses of AP4A constricted arterioles. This vasoconstrictor effect was not affected by PPADS. The vasodilatory effect of the higher doses of AP4A was almost abolished in the presence of LNNA. Alpha,beta-methylene ATP had no effect on coronary microvascular diameters. AP4A has bidirectional effects on coronary arterial microvessels: vasodilatory effects mediated by P1 purinoceptors and NO, which might be mediated by P2Y purinoceptors, and a vasoconstrictor effect, which is not mediated by P2X purinoceptors.
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Affiliation(s)
- A Sugimura
- The First Department of Internal Medicine, Tohoku University, School of Medicine, Sendai, Japan
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48
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Horaguchi J, Kato A, Tanikawa T, Shiba N, Horiguchi S, Sugimura A, Takahashi J, Kanazawa M, Shirato K. [Successful rescue from fatal pulmonary thrombo embolism by percutaneous thrombectomy: a report of two cases]. Nihon Naika Gakkai Zasshi 2000; 89:2186-8. [PMID: 11215136 DOI: 10.2169/naika.89.2186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- J Horaguchi
- Department of Cardiology, Sendai City Medical Center/Sendai Open Hospital, Sendai
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49
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Tomita Y, Imai T, Tanikawa T, Mizusawa T, Kanai T, Takahashi K. Treatment of bilateral renal cell cancer and multiple lung metastasis: nephron-sparing surgery and resection of lung tumors after interleukin-2 therapy. Eur Urol 2000; 33:238-40. [PMID: 9519372 DOI: 10.1159/000019543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We report a case of bilateral renal cell cancer and multiple lung metastasis who was first treated with left radical nephrectomy and nephron-sparing surgery of the right kidney. Consecutive interleukin-2 administration achieved partial response in lung disease and residual tumors were surgically removed. The disease-free state has continued for 33 months.
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Affiliation(s)
- Y Tomita
- Department of Urology, Niigata University School of Medicine, Japan.
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50
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Tanikawa T, Kanatsuka H, Koshida R, Tanaka M, Sugimura A, Kumagai T, Miura M, Komaru T, Shirato K. Role of pertussis toxin-sensitive G protein in metabolic vasodilation of coronary microcirculation. Am J Physiol Heart Circ Physiol 2000; 279:H1819-29. [PMID: 11009469 DOI: 10.1152/ajpheart.2000.279.4.h1819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have previously demonstrated that pertussis toxin (PTX)-sensitive G protein (G(PTX)) plays a major role in coronary microvascular vasomotion during hypoperfusion. We aimed to elucidate the role of G(PTX) during increasing metabolic demand. In 18 mongrel dogs, coronary arteriolar diameters were measured by fluorescence microangiography using a floating objective. Myocardial oxygen consumption (MVO(2)) was increased by rapid left atrial pacing. In six dogs, PTX (300 ng/ml) was superfused onto the heart surface for 2 h to locally block G(PTX). In eight dogs, the vehicle (Krebs solution) was superfused in the same way. Before and after each treatment, the diameters were measured during control (130 beats/min) and rapid pacing (260 beats/min) in each group. Metabolic stimulation before and after the vehicle treatment caused 8.6 +/- 1. 8 and 16.1 +/- 3.6% dilation of coronary arterioles <100 microm in diameter (57 +/- 8 microm at control, n = 10), respectively. PTX treatment clearly abolished the dilation of arterioles (12.8 +/- 2. 5% before and 0.9 +/- 1.6% after the treatment, P < 0.001 vs. vehicle; 66 +/- 8 microm at control, n = 11) in response to metabolic stimulation. The increases in MVO(2) and coronary flow velocity were comparable between the vehicle and PTX groups. In four dogs, 8-phenyltheophylline (10 microM, superfusion for 30 min) did not affect the metabolic dilation of arterioles (15.3 +/- 2.0% before and 16.4 +/- 3.8% after treatment; 84.3 +/- 11.0 microm at control, n = 8). Thus we conclude that G(PTX) plays a major role in regulating the coronary microvascular tone during active hyperemia, and adenosine does not contribute to metabolic vasodilation via G(PTX) activation.
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Affiliation(s)
- T Tanikawa
- First Department of Internal Medicine and Department of Comprehensive Medicine, Tohoku University, School of Medicine, Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan
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