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Kamei M, Matsuo K, Yoshida Y, Shimada K, Otsuki M, Fujimoto N, Ishibashi M, Quan YS, Kamiyama F, Hara Y, Takamura S, Nakayama T. Intratumoral delivery of a highly active form of XCL1 enhances antitumor CTL responses through recruitment of CXCL9-expressing conventional type-1 dendritic cells. Int J Cancer 2024; 154:2176-2188. [PMID: 38346928 DOI: 10.1002/ijc.34874] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 12/19/2023] [Accepted: 01/16/2024] [Indexed: 04/14/2024]
Abstract
Conventional type 1 dendritic cells (cDC1s) play a crucial role in antitumor immunity through the induction and activation of tumor-specific CD8+ cytotoxic T cells (CTLs). The chemokine XCL1 is a major chemotactic factor for cDC1s and its receptor XCR1 is selectively expressed on cDC1s. Here, we investigated the effect of intratumoral delivery of a highly active form of murine XCL1 (mXCL1-V21C/A59C) on cDC1-mediated antitumor immunity using a hydrophilic gel patch. The hydrophilic gel patch containing mXCL1-V21C/A59C increased cDC1 accumulation in the tumor masses and promoted their migration to the regional lymph nodes, resulting in enhanced induction of tumor-specific CTLs. Tumor-infiltrating cDC1s not only expressed XCR1 but also produced CXCL9, a ligand for CXCR3 which is highly expressed on CTLs and NK cells. Consequently, CTLs and NK cells were increased in the tumor masses of mice treated with mXCL1-V21C/A59C, while immunosuppressive cells such as monocyte-derived suppressive cells and regulatory T cells were decreased. We also confirmed that anti-CXCL9 treatment decreased the tumor infiltration of CTLs. The intratumoral delivery of mXCL1-V21C/A59C significantly decreased tumor growth and prolonged survival in E.G7-OVA and B16-F10 tumor-bearing mice. Furthermore, the antitumor effect of mXCL1-V21CA59C was enhanced in combination with anti-programmed cell death protein 1 treatment. Finally, using The Cancer Genome Atlas database, we found that XCL1 expression was positively correlated with tumor-infiltrating cDC1s and a better prognosis in melanoma patients. Collectively, our findings provide a novel therapeutic approach to enhance tumor-specific CTL responses through the selective recruitment of CXCL9-expressing cDC1s into the tumor masses.
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Affiliation(s)
- Momo Kamei
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Kazuhiko Matsuo
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Yusuke Yoshida
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Kaho Shimada
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Mayuko Otsuki
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Nao Fujimoto
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Miho Ishibashi
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | | | | | - Yuta Hara
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
| | - Shiki Takamura
- Laboratory for Immunological Memory, Research Center for Integrative Medical Sciences (IMS), RIKEN Yokohama Institute, Kanagawa, Japan
| | - Takashi Nakayama
- Faculty of Pharmacy, Division of Chemotherapy, Kindai University, Osaka, Japan
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Ozaki S, Ishigami G, Otsuki M, Miyamoto H, Wada K, Watanabe Y, Nishino T, Kojima H, Soda K, Nakao Y, Sutoh M, Maeda T, Kobayashi T. Publisher Correction: Granular flow experiment using artificial gravity generator at International Space Station. NPJ Microgravity 2023; 9:79. [PMID: 37739962 PMCID: PMC10517004 DOI: 10.1038/s41526-023-00325-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023] Open
Affiliation(s)
- S Ozaki
- Yokohama National University, Yokohama, Japan.
| | | | - M Otsuki
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | | | - K Wada
- Chiba Institute of Technology, Chiba, Japan
| | - Y Watanabe
- Yokohama National University, Yokohama, Japan
| | - T Nishino
- Yokohama National University, Yokohama, Japan
| | - H Kojima
- Keio University, Yokohama, Japan
| | - K Soda
- Keio University, Yokohama, Japan
| | - Y Nakao
- Keio University, Yokohama, Japan
| | - M Sutoh
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Maeda
- Tokyo University of Agriculture and Technology, Fuchu, Japan
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Ozaki S, Ishigami G, Otsuki M, Miyamoto H, Wada K, Watanabe Y, Nishino T, Kojima H, Soda K, Nakao Y, Sutoh M, Maeda T, Kobayashi T. Granular flow experiment using artificial gravity generator at International Space Station. NPJ Microgravity 2023; 9:61. [PMID: 37553360 PMCID: PMC10409782 DOI: 10.1038/s41526-023-00308-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/19/2023] [Indexed: 08/10/2023] Open
Abstract
Studying the gravity-dependent characteristics of regolith, fine-grained granular media covering extra-terrestrial bodies is essential for the reliable design and analysis of landers and rovers for space exploration. In this study, we propose an experimental approach to examine a granular flow under stable artificial gravity conditions for a long duration generated by a centrifuge at the International Space Station. We also perform a discrete element simulation of the granular flow in both artificial and natural gravity environments. The simulation results verify that the granular flows in artificial and natural gravity are consistent. Further, regression analysis of the experimental results reveals that the mass flow rate of granular flow quantitatively follows a well-known physics-based law with some deviations under low-gravity conditions, implying that the bulk density of the granular media decreases with gravity. This insight also indicates that the bulk density considered in simulation studies of space probes under low-gravity conditions needs to be tuned for their reliable design and analysis.
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Affiliation(s)
- S Ozaki
- Yokohama National University, Yokohama, Japan.
| | | | - M Otsuki
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | | | - K Wada
- Chiba Institute of Technology, Chiba, Japan
| | - Y Watanabe
- Yokohama National University, Yokohama, Japan
| | - T Nishino
- Yokohama National University, Yokohama, Japan
| | - H Kojima
- Keio University, Yokohama, Japan
| | - K Soda
- Keio University, Yokohama, Japan
| | - Y Nakao
- Keio University, Yokohama, Japan
| | - M Sutoh
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Maeda
- Tokyo University of Agriculture and Technology, Fuchu, Japan
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Otsuki M, Horimoto T, Kobayashi M, Morita Y, Ijiri S, Mitani Y. Testosterone levels in hair of free-ranging male northern fur seals ( Callorhinus ursinus) in relation to sampling month, age class and spermatogenesis. Conserv Physiol 2021; 9:coab031. [PMID: 34026214 PMCID: PMC8129824 DOI: 10.1093/conphys/coab031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 02/20/2021] [Accepted: 04/15/2021] [Indexed: 06/12/2023]
Abstract
Information about the reproductive status of free-ranging pinnipeds provides useful insight into their population dynamics, which is essential to their management and conservation. To determine the reproductive status of individual animals, blood sampling is often required despite being impractical to collect in open water. Hair as an endocrine marker has been used to less invasively assess the reproductive status of terrestrial animals. However, it is unknown whether pinniped reproductive status can be assessed from hair samples. Here, we examine testosterone levels in hair obtained from 57 male northern fur seals and used it to compare their age class and spermatogenesis during the non-breeding season off Hokkaido. We isolated testosterone from the samples using gas chromatography and measured testosterone levels using time-resolved fluoroimmunoassay. Testosterone levels in hair increased towards the breeding season. In May, testosterone levels were the highest in seals aged between 4 and 7 years, followed by those over the age of 8 years and under the age of 4 years. Spermatids, the final phase of spermatogenesis, were present in the seals sampled between April and June, even though testosterone levels were low in April. The seals with spermatids in May showed the highest testosterone levels. Our results demonstrate that seals with higher testosterone levels in May are likely to be mature males (≥4 years). Since hair can be collected using biopsy darts in the field, it will be possible to less invasively determine testosterone levels of male seals in the future.
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Affiliation(s)
- Mayuko Otsuki
- Field Science Center for Northern Biosphere, Hokkaido University, Hakodate, 0400051, Japan
| | - Takanori Horimoto
- Wakkanai Fisheries Research Institute, Hokkaido Research Organization, Wakkanai, 0970001, Japan
| | - Motoki Kobayashi
- Field Science Center for Northern Biosphere, Hokkaido University, Hakodate, 0400051, Japan
| | - Yuka Morita
- Institute for East China Sea Research, Nagasaki University, Nagasaki, 8512213, Japan
| | - Shigeho Ijiri
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, 0418611, Japan
| | - Yoko Mitani
- Field Science Center for Northern Biosphere, Hokkaido University, Hakodate, 0400051, Japan
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Kyaw KY, Otsuki M, Segarra MS, Hiraishi N, Tagami J. Effect of Calcium-phosphate Desensitizers on Staining Susceptibility of Acid-eroded Enamel. Oper Dent 2018; 44:281-288. [PMID: 30106333 DOI: 10.2341/18-024-l] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To investigate the effect of calcium-phosphate-based desensitizers, Teethmate AP paste (TMAP) and Teethmate Desensitizer (TMD) (Kuraray Noritake Dental, Tokyo, Japan), on the prevention of staining on acid-eroded enamel. METHODS AND MATERIALS Forty polished enamel samples (4×4×1 mm) from bovine incisors were randomly divided into five groups (n=8). After immersion in 50 mL of 0.5% citric acid (pH 2.5) for 15 minutes to form acid-eroded surfaces, the surfaces were subjected to different treatments with TMAP, TMD, and NaF (0.21% means 950 ppm) for five minutes. Another eroded group was not treated with desensitizer. For the control group, the samples were not eroded or treated. All the samples were stored in artificial saliva (AS) at pH 7.2 for 24 hours at 37°C. The TMAP, TMD, or NaF was reapplied at eight and 16 hours during the 24 hours of storage time. The surface roughness (Sa) was evaluated following ISO 25178 for surface texture using confocal laser scanning microscopy (VK-X 150 series, Keyence, Osaka, Japan) before acid erosion, after acid erosion, and after 24 hours of incubation in AS. Afterward, the color difference was measured with a dental colorimeter (Shade Eye NCC, Shofu, Kyoto, Japan) before and after staining with tea solution. RESULTS One-way repeated measures analysis of variance showed that acid erosion significantly increased Sa (p<0.001). TMAP- and TMD-treated groups exhibited lower Sa values than the NaF group and the no-desensitizer treatment group. The greatest staining was observed in the NaF group and the no-desensitizer group, while the TMAP and TMD groups significantly decreased the formation of stains. CONCLUSIONS Acid-eroded enamel increased surface roughness and tended to absorb more stains. However, the application of TMAP and TMD moderated the roughness and thus prevented the formation of extrinsic stains.
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Takakura Y, Otsuki M, Nakagawa Y, Tajima Y, Mito Y, Ogata A, Koshimizu S, Yoshino M, Uemori G. Comparative symptomatology of apraxia of speech/anarthrie: Patients with neurodegenerative diseases versus cerebrovascular diseases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ogata A, Hamaue N, Koshimizu S, Otsuki M, Shinpo K, Koyanagi I. The relation between isatin and selegiline by the alteration of serum isatin, an endogenous monoamine oxidase inhibitor, induced by selegiline hydrochloride in Parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Otsuki M, Nakagawa Y, Kondo K, Houzen H, Hamada S, Tajima Y, Mito Y, Koshimizu S, Ogata A, Ura S, Kuroshima K, Yoshida K, Yabe I, Sasaki H. Longitudinal investigation of the symptoms and the imaging findings of nfvPPA:: Sub-classification for nosology. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Otsuki M, Akamatsu T, Nobetsu T, Mizuguchi D, Mitani Y. Diel changes in ribbon seal Histriophoca fasciata vocalizations during sea ice presence in the Nemuro Strait, Sea of Okhotsk. Polar Biol 2017. [DOI: 10.1007/s00300-017-2203-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Before the accident at Fukushima Daiichi nuclear power plant in March 2011, I never thought about radiation. After the accident, I originally evacuated with my two sons, but we returned home a few weeks later to be with my husband and parents-in-law as I felt that life with my family was what mattered and the very basis of my happiness. Today, 5 years after the accident, some people are able to think positively about the situation, and some remain uncertain. This article offers my experience and thoughts as a mother to help enable others to feel less stressed about eating food produced in Fukushima, and suggests ideas to help lift their spirits.
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Affiliation(s)
- M Otsuki
- Date, Fukushima Prefecture, Japan
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11
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Tassery H, Levallois B, Terrer E, Manton DJ, Otsuki M, Koubi S, Gugnani N, Panayotov I, Jacquot B, Cuisinier F, Rechmann P. Use of new minimum intervention dentistry technologies in caries management. Aust Dent J 2014; 58 Suppl 1:40-59. [PMID: 23721337 DOI: 10.1111/adj.12049] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [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
Preservation of natural tooth structure requires early detection of the carious lesion and is associated with comprehensive patient dental care. Processes aiming to detect carious lesions in the initial stage with optimum efficiency employ a variety of technologies such as magnifying loupes, transillumination, light and laser fluorescence (QLF® and DIAGNOdent® ) and autofluorescence (Soprolife® and VistaCam®), electric current/impedance (CarieScan(®) ), tomographic imaging and image processing. Most fluorescent caries detection tools can discriminate between healthy and carious dental tissue, demonstrating different levels of sensitivity and specificity. Based on the fluorescence principle, an LED camera (Soprolife® ) was developed (Sopro-Acteon, La Ciotat, France) which combined magnification, fluorescence, picture acquisition and an innovative therapeutic concept called light-induced fluorescence evaluator for diagnosis and treatment (LIFEDT). This article is rounded off by a Soprolife® illustration about minimally or even non-invasive dental techniques, distinguishing those that preserve or reinforce the enamel and enamel-dentine structures without any preparation (MIT1- minimally invasive therapy 1) from those that require minimum preparation of the dental tissues (MIT2 - minimally invasive therapy 2) using several clinical cases as examples. MIT1 encompasses all the dental techniques aimed at disinfection, remineralizing, reversing and sealing the caries process and MIT2 involves a series of specific tools, including microburs, air abrasion devices, sonic and ultrasonic inserts and photo-activated disinfection to achieve minimal preparation of the tooth. With respect to minimally invasive treatment and prevention, the use of lasers is discussed. Furthermore, while most practices operate under a surgical model, Caries Management by Risk Assessment (CaMBRA) encourages a medical model of disease prevention and management to control the manifestation of the disease, or keep the oral environment in a state of balance between pathological and preventive factors. Early detection and diagnosis and prediction of lesion activity are of great interest and may change traditional operative procedures substantially. Fluorescence tools with high levels of magnification and observational capacity should guide clinicians towards a more preventive and minimally invasive treatment strategy.
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Affiliation(s)
- H Tassery
- UFR Odontologie, Université Montpellier 1, Montpellier Cedex, France
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Bakry AS, Takahashi H, Otsuki M, Tagami J. Evaluation of new treatment for incipient enamel demineralization using 45S5 bioglass. Dent Mater 2014; 30:314-20. [PMID: 24433821 DOI: 10.1016/j.dental.2013.12.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 10/13/2013] [Accepted: 12/04/2013] [Indexed: 10/25/2022]
Abstract
Bioglass 45S5 is a silica-based bioactive glass capable of depositing a layer of hydroxyl carbonate apatite on the surface of the glass when immersed in body fluids. The present paper studies a new technique for treating early human dental enamel caries lesions by using a paste composed of 45S5 bioglass and phosphoric acid. Artificial caries lesions were induced in enamel flat surfaces by means of a decalcification solution. All specimens were exposed to a brushing-abrasion challenge to test the durability of any newly formed layer resulting from the application of 45S5 bioglass paste. The specimens treated with bioglass paste showed complete coverage with a layer of brushite crystals. The brushing-abrasion challenge did not statistically affect the percentage of enamel coverage with the crystalline layer formed by the application of bioglass (p<0.05). These crystals were converted to hydroxyapatite crystals when stored in artificial saliva for 14 days. The current technique suggests the possibility of restoring incipient enamel erosive lesion with an abrasion durable layer of hydroxyapatite crystals.
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Affiliation(s)
- A S Bakry
- Operative Dentistry Department, Faculty of Dentistry, King AbdulAziz University, Jeddah, Saudia Arabia; Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Egypt; Japan Society for the Promotion of Science, Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
| | - H Takahashi
- Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Course of Oral Health Engineering, School of Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - M Otsuki
- Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - J Tagami
- Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan; Global Center of Excellence Program, ICTB at Tokyo Medical and Dental University, Tokyo, Japan
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Bhingare A, Ohno T, Tomura M, Zhang C, Aramaki O, Otsuki M, Tagami J, Azuma M. Dental Pulp Dendritic Cells Migrate to Regional Lymph Nodes. J Dent Res 2013; 93:288-93. [DOI: 10.1177/0022034513518223] [Citation(s) in RCA: 12] [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: 12/13/2022] Open
Abstract
Dendritic cell (DC) migration to regional lymph nodes (RLNs) is an essential step in adaptive immunity, and cell-surface antigens on migrating DCs greatly affect the quality and quantity of subsequent immune responses. Although MHC class II+ DC-like cells exist in the dental pulp, the lineage and function of these cells remain unknown. Here, we identified migratory DCs from the dental pulp after cusp trimming and acid etching in KikGR mice, in which the photoconvertible fluorescent protein changed from green to red upon violet light exposure. Two major cell fractions from the dental pulp had migrated to the RLNs at 16 hrs after cusp treatment, which showed the following lineage markers in the main and second fractions: CD11chighCD11b++Ly6Clow Ly6Glow F4/80+ and CD11cmedCD11b+++Ly6C++Ly6G+++F4/80-, respectively. These lineage markers indicate that the former cells were DCs that had migrated through afferent lymphoid vessels, and the latter were granulocytes recruited via blood circulation. Migratory dental pulp DCs were mature, expressing the highest levels of CD273 (B7-DC) and CD86 co-stimulators and MHC class II. Our results suggest that cariogenic-bacteria-exposed dental pulp DCs migrate to RLNs and there trigger adaptive immune responses.
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Affiliation(s)
- A.C. Bhingare
- Department of Molecular Immunology, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - T. Ohno
- Department of Molecular Immunology, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - M. Tomura
- Center for Innovation in Immunoregulative Technology and Therapeutics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - C. Zhang
- Department of Molecular Immunology, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - O. Aramaki
- Department of Cariology and Operative Dentistry, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - M. Otsuki
- Department of Cariology and Operative Dentistry, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - J. Tagami
- Department of Cariology and Operative Dentistry, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - M. Azuma
- Department of Molecular Immunology, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
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Nassar M, Hiraishi N, Islam MS, Tamura Y, Otsuki M, Kasugai S, Ohya K, Tagami J, Tay FR. The effect of glutathione on 2-hydroxyethylmethacrylate cytotoxicity and on resin-dentine bond strength. Int Endod J 2013; 47:652-8. [PMID: 24117849 DOI: 10.1111/iej.12201] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 10/05/2013] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the influence of reduced glutathione (GSH) application on 2-hydroxyethylmethacrylate (HEMA) cytotoxicity on rat pulpal cells and evaluate the effect of etched-dentine treatment with GSH on the immediate microtensile bond strength (μTBS) of etch-and-rinse adhesive. METHODOLOGY The cytotoxicity of 10 mmol L(-1) HEMA, 10 mmol L(-1) HEMA + 1 mmol L(-1) GSH, 10 mmol L(-1) HEMA + 5 mmol L(-1) GSH and 10 mmol L(-1) HEMA + 10 mmol L(-1) GSH was compared (6 h and 24 h). Cells viability was measured by means of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, followed by morphological observation of cells. Etched-dentine surfaces were rinsed and treated with one of the following solutions: 2% GSH, 5% GSH or 10% GSH, bonded with Adper Single Bond Plus (3M, ESPE, St. Paul, MN, USA) and restored with resin composite. The control group received no GSH treatment. After 1 day of water-storage at 37 °C, the specimens were subjected to μTBS testing. Cytotoxicity and μTBS data were analysed by one-way anova and Tukey post hoc tests (P < 0.05). RESULTS There were significant differences between the groups. HEMA elicited a remarkable toxic effect. 10 mmol L(-1) GSH prevented HEMA-induced damage at both exposure times. Whilst 5 mmol L(-1) GSH lost its protective effect at 24-h exposure time and 1 mmol L(-1) GSH showed no protective effect at both exposure times, GSH had no significant effect on the immediate μTBS; however, 5% GSH had higher bond strength value when compared to 10% GSH (P = 0.003). CONCLUSION Controlled concentrations of GSH had a protective effect against HEMA cytotoxicity. GSH had neither positive nor negative influence on μTBS.
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Affiliation(s)
- M Nassar
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases at Tokyo Medical and Dental University, Tokyo, Japan
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15
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Otsuki M, Nakagawa Y, Ogata A, Makino K, Fukishima T, Kuwabara T. Variety of clinical symptoms of logopenic progressive aphasia in Japanese patients. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Nakagawa Y, Otsuki M, Yoshino M. Errors in tool use reflecting insufficient recall of the target object for tools. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Functional monomers in dentin adhesives are involved in wetting dental substrates, demineralization, and the formation of calcium salts. However, the interaction of these monomers with collagen is not understood at a molecular/atomic level. We performed saturation transfer difference (STD) NMR spectroscopy to investigate the binding interaction of 2 functional monomers, 4-methacryloyloxyethyl trimellitate anhydride (4-META) and 10-methacryloyloxydecyl dihydrogenphosphate (MDP), with atelocollagen as a triple-helical peptide model. High STD intensities were detected on the protons in the aliphatic region in MDP, whereas they were not detected for 4-META. The STD results imply that MDP has a relatively stable interaction with the collagen, because of the hydrophobic interactions between the hydrophobic MDP moieties and the hydrophobic collagen surface. This finding indicates that MDP-collagen complexation accounts for stable dentin bonding.
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Affiliation(s)
- N. Hiraishi
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Department, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - N. Tochio
- NMR Pipeline Methodology Research Team, RIKEN Systems and Structural Biology Center, Yokohama, Japan
| | - T. Kigawa
- NMR Pipeline Methodology Research Team, RIKEN Systems and Structural Biology Center, Yokohama, Japan
| | - M. Otsuki
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Department, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - J. Tagami
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Department, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
- Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases at Tokyo Medical and Dental University, Tokyo, Japan
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Inagaki S, Otsuki M, Sasa S. Protocol dependence of mechanical properties in granular systems. Eur Phys J E Soft Matter 2011; 34:124. [PMID: 22113399 DOI: 10.1140/epje/i2011-11124-6] [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: 11/16/2010] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
We study the protocol dependence of the mechanical properties of granular media by means of computer simulations. We control a protocol of realizing disk packings in a systematic manner. In 2D, by keeping material properties of the constituents identical, we carry out compaction with various strain rates. The disk packings exhibit the strain rate dependence of the critical packing fraction above which the pressure becomes non-zero. The observed behavior contrasts with the well-studied jamming transitions for frictionless disk packings. We also observe that the elastic moduli of the disk packings depend on the strain rate logarithmically. Our results suggest that there exists a time-dependent state variable to describe macroscopic material properties of disk packings, which depend on its protocol.
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Affiliation(s)
- S Inagaki
- Department of Physics, Kyoto University, Kyoto, Japan.
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Hiraishi N, Sono R, Islam MS, Otsuki M, Tagami J, Takatsuka T. Effect of hesperidin in vitro on root dentine collagen and demineralization. J Dent 2011; 39:391-6. [PMID: 21414383 DOI: 10.1016/j.jdent.2011.03.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 03/03/2011] [Accepted: 03/07/2011] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVES Caries progress might be controlled when collagen matrix could be preserved after demineralization. The aim of this pH cycling study was to investigate the effect of hesperidin, a citrus flavonoid antioxidant, on dentine collagen and remineralization in dentine lesion, and compared with that of chlorhexidine. METHODS The pH cycling was employed on bovine root dentine by demineralization for 14 h, incubation in testing solutions (hesperidin or chlorhexidine) for 2 h and remineralization with bacteria-derived collagenase for 8 h, for 8 days. Calcium release was measured by means of an atomic absorption spectrophotometer, and degraded collagen matrix by collagenase was investigated by assaying hydroxyproline. The lesion depth and mineral loss was evaluated by means of transverse microradiography. RESULTS The effect of testing solutions had a significant difference on the results of chemical analyses (p<0.0115 for calcium release; p<0.0008 for degradated collagen). The lesion depth and mineral loss were reduced in the lesions where were incubated with hesperidin and chlorhexidine. The remineralization in deep lesions was found when the matrix was incubated in hesperidin, whilst no mineral uptake in deep lesion when incubated in chlorhexidine. CONCLUSION Hesperidin preserved collagen and inhibited demineralization, and enhanced remineralization even under the fluoride-free condition.
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Affiliation(s)
- N Hiraishi
- Cariology and Operative Dentistry, Department of Restorative Science, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Tokyo 113-8549, Japan.
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Abstract
Bioglass 45S5 is a bioactive glass that can create a layer of calcium-phosphate crystals on mineralized hard tissues. In this study, 45S5 bioglass was mixed with phosphoric acid and irradiated with CO2 laser and examined as a possible aid in the treatment of dentin hypersensitivity. The dentinal surface modified by the aforementioned technique was chemically and micro-morphologically examined with a field emission scanning electron microscope (FE-SEM) equipped with an energy-dispersive x-ray spectroscope (EDS), and the crystalline structures of the examined dentinal surfaces were examined by x-ray diffraction (XRD). Moreover, the mechanical properties of the newly formed layer were examined by nanoindentation. The results showed that 45S5 bioglass could occlude the dentinal tubule orifices with calcium-phosphate crystals. The application of CO2 laser potentially improved the mechanical organization of these crystals.
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Affiliation(s)
- A.S. Bakry
- Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, 1–5–45, Yushima, Bunkyo-ku, Tokyo 113–8549, Japan, and Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Egypt
| | - H. Takahashi
- Advanced Biomaterials, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, 1–5–45, Yushima, Bunkyo-ku, Tokyo 113–8549, Japan
| | - M. Otsuki
- Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1–5–45, Yushima, Bunkyo-ku, Tokyo 113–8549, Japan
| | - A. Sadr
- Department of Cariology and Operative Dentistry, Global Center of Excellence Program, ICTB at Tokyo Medical and Dental University, Tokyo, Japan
| | - K. Yamashita
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2–3–10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101–0062, Japan
| | - J. Tagami
- Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1–5–45, Yushima, Bunkyo-ku, Tokyo 113–8549, Japan, and Global Center of Excellence Program, ICTB at Tokyo Medical and Dental University, Tokyo, Japan
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21
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Inomata-Kurashiki Y, Maeda K, Yoshioka E, Fukuhara A, Imagawa A, Otsuki M, Shimomura I. Measurement of adiponectin production from differentiated metabolic stem cells. Horm Metab Res 2010; 42:318-23. [PMID: 20221981 DOI: 10.1055/s-0030-1248304] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
To treat metabolic syndrome, fat tissue dysfunction should be corrected rather than controlling conventional risk factors such as hypertension, dyslipidemia, and diabetes mellitus. For this purpose, accumulating evidence suggests increasing plasma adiponectin levels can be a key treatment strategy, especially in setting of food or drug selection. Here we report that adipocyte precursors obtained from several sites of fat tissue, which we call Metabolic Stem Cells (MSC), could be used as a novel screening system to identify adiponectin enhancing drugs or food for individual patients. MSC were prepared from fat tissues collected from 29 patients. They were differentiated in cultures into mature adipocytes. The time course of adiponectin production was independent of the number of mature adipocytes and gradually decreased at 48 h after differentiation. Pioglitazone, a full PPARgamma agonist, stabilized adiponectin production at days 8-16 after differentiation, whereas telmisartan, a partial PPARgamma agonist, showed variable response. Dividing the adiponectin secretion of day 12 by that of day 10 provided an estimate of adiponectin-producing activity irrespective of the number of MSC-derived adipocytes in culture. Using this score of adiponectin-production activity, we successfully assessed 16 agents in a 96-well plate. The effect of each agent on adiponectin production showed a similar pattern, independent of the site of isolated adipose tissue. Our results show that MSC can be used as a tool for selecting drugs that enhance adiponectin-production activity.
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Affiliation(s)
- Y Inomata-Kurashiki
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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22
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Otsuki M, Miyatake A, Fujita K, Hamasaki T, Kasayama S. Reduced carotid atherosclerosis in asthmatic patients treated with inhaled corticosteroids. Eur Respir J 2010; 36:503-8. [PMID: 20413534 DOI: 10.1183/09031936.00090009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Although inflammation is an important component of atherosclerosis, it is unknown whether inhaled corticosteroids (ICS) as anti-inflammatory drugs prevent atherosclerosis. In the present study, carotid atherosclerosis was evaluated by ultrasonography in 150 asthmatic patients who had been regularly treated with ICS, and in 150 matched nonasthmatic controls, with an assessment of atherosclerotic risk factors. Carotid intima-media thickness was significantly lower in the asthmatic patients than in the controls. The prevalence of carotid plaque tended to be lower in the asthmatic patients than in the controls. Defined carotid atherosclerosis was diagnosed in 51 of the asthmatic patients, who were older, with a higher prevalence of males, a higher prevalence of dyslipidaemia and a lower mean daily dose of ICS than the 99 patients without carotid atherosclerosis. Stepwise multiple logistic regression analysis identified age, male sex and dyslipidaemia as positive risk factors for carotid atherosclerosis. The mean daily dose of ICS was a negative risk factor. Carotid atherosclerosis is reduced in asthmatic patients treated with ICS compared with matched controls. This study suggests that ICS may have protective effects against atherosclerosis.
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Affiliation(s)
- M Otsuki
- Dept of Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan.
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23
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Otani M, Yamamoto M, Harada M, Otsuki M. Effect of long- and short-term treatments with pravastatin on diabetes mellitus and pancreatic fibrosis in the Otsuka-Long-Evans-Tokushima fatty rat. Br J Pharmacol 2010; 159:462-73. [PMID: 20015084 PMCID: PMC2825367 DOI: 10.1111/j.1476-5381.2009.00548.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 06/16/2009] [Accepted: 09/17/2009] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE The effects of statins on diabetes mellitus (DM) are controversial, and their effects on pancreatic fibrosis are poorly defined. We investigated the effect of long- and short-term treatments with pravastatin on the development of DM and pancreatic fibrosis in DM-prone Otsuka-Long-Evans-Tokushima Fatty (OLETF) rats. EXPERIMENTAL APPROACH Male OLETF rats were divided into four groups at 12 weeks of age. The first group received a standard rat diet until the end of the experimental period at age 80 weeks. The second group was given a diet containing 0.05% pravastatin from 12 weeks of age, before the onset of DM and pancreatic fibrosis, and the third group was given the same pravastatin diet from 28 weeks of age, after the onset of DM and pancreatic fibrosis, until age 80 weeks. The fourth group received the same pravastatin diet only for 16 weeks, from 12 to 28 weeks of age, and switched to a standard diet. Progressions of DM and pancreatic fibrosis were evaluated. KEY RESULTS Long-term treatments with pravastatin, either from 12 or 28 weeks of age, decreased serum glucose concentration and fibrotic area, elevated superoxide dismutase activity and down-regulated transforming growth factor-beta1 mRNA in the pancreas. In contrast, after a short-term treatment with pravastatin, these parameters markedly deteriorated after its cessation. CONCLUSIONS AND IMPLICATIONS The results suggest that long-term treatment with pravastatin improves DM and pancreatic fibrosis via anti-oxidative and anti-fibrotic properties, whereas cessation of pravastatin abolishes these beneficial effects, and accelerates DM and pancreatic fibrosis.
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Affiliation(s)
- M Otani
- Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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25
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Nakamura H, Tashiro M, Asaumi H, Nomiyama Y, Kaku M, Watanabe S, Miyamoto T, Otsuki M. Increased expression of Smad6 deteriorates murine acute experimental pancreatitis in two models. Gut 2008; 57:788-98. [PMID: 18477679 DOI: 10.1136/gut.2007.119370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND Smad6 is implicated in the inhibition of bone morphogenetic protein signalling. However, the function of Smad6 in the pancreas remains obscure. METHODS To elucidate the unknown function of Smad6, we developed transgenic mice selectively expressing Smad6 in pancreatic acinar cells using a plasmid construct coding rat elastase 1 enhancer/promoter. RESULTS Smad6 transgenic mice had no specific distinguishing phenotype such as body weight, pancreatic wet weight and concentrations of pancreatic protein. However, Smad6 transgenic mice reacted to hyperstimulation by caerulein injection or a diet containing 0.5% ethionine. Maximal amylase release stimulated by CCK-8 was significantly decreased in Smad6 transgenic mice acini, and trypsin activities in transgenic mice acini were significantly increased after stimulation of CCK-8. There was no difference in effect of CCK-8 stimulation on the subsequent increase in intracellular free Ca2+ concentration ([Ca2+](i)) between wild-type and transgenic mice acini. These findings suggest that reduced pancreatic enzyme secretion was caused by the disorder of its downstream signal transduction pathways in acinar cells. The amino acid sequence at the N-terminus of Smad6 was similar to that of synaptosome-associated protein (SNAP) 25 interacting protein, which plays an important role in regulating exocytosis of pancreatic enzymes in acinar cells. Pancreatic SNAP25 protein levels in transgenic mice were decreased after caerulein-induced pancreatitis. CONCLUSIONS These results suggest that elevated expression of Smad6 inhibits normal function of SNAP25-interacting protein and SNAP25, reduces amylase secretion in acinar cells, and increases the susceptibility of acinar cells to the onset of pancreatitis.
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Affiliation(s)
- H Nakamura
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, 1-1 Iseigaoka, Yahatanishi-ku Kitakyushu 807-8555, Japan.
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26
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Kume K, Yamasaki M, Tashiro M, Santo N, Syukuwa K, Maekawa S, Aritome G, Matsuoka H, Murase T, Yoshikawa I, Otsuki M. Endoscopic mucosal resection for early gastric cancer: comparison of two modifications of the cap method. Endoscopy 2008; 40:280-3. [PMID: 18389445 DOI: 10.1055/s-2007-995646] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND STUDY AIM Endoscopic mucosal resection using a cap (EMR-C) is an established method for curative resection of early neoplastic lesions; prelooping of the snare may however be difficult and lead to imprecise resection. We therefore compared two modifications of the conventional technique using outer snare placement with an accessory channel in a prospective, nonrandomized study. PATIENTS AND METHODS Between October 2004 and March 2007, 54 patients (men 37, women 17; mean age 71 years) underwent EMR. One method involved an internally retained snare (IRS) cap, with a fixed prelooped snare inside the cap; the other method used an externally guided snare (EGS) cap with the snare guided over an oblique cap. The main outcome parameters were specimen size, en bloc resection, and complications. RESULTS There was no difference between use of the IRS and EGS cap methods in relation to specimen size (27.6 vs. 27.1 mm), or rates of en bloc resection (88.9 % vs. 83.3 %); only one perforation occurred, and this was in the EGS group. CONCLUSION Both techniques appeared to provide similar efficacy, the inner rim of the IRS cap stabilizes aspiration of the lesion compared with the EGS cap that does not have it.
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Affiliation(s)
- K Kume
- Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, School of Medicine, Kitakyusyu, Japan.
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Kasayama S, Kitamura T, Inaba M, Otsuki M, Asanuma N, Kouhara H. Painless thyroiditis occurring during post-menopausal period, following remission of Graves' disease. J Endocrinol Invest 2008; 31:92-3. [PMID: 18296912 DOI: 10.1007/bf03345573] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Affiliation(s)
- K Kume
- Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, School of Medicine, Kitakyusya, Japan
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29
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Kume K, Yamasaki M, Yoshikawa I, Otsuki M. Grasping-forceps-assisted endoscopic submucosal dissection using a novel irrigation cap-knife for large superficial early gastric cancer. Endoscopy 2007; 39:566-9. [PMID: 17554656 DOI: 10.1055/s-2007-966394] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 12/10/2022]
Abstract
The technique of endoscopic submucosal dissection (ESD) needs special skills and involves a long procedure. We therefore developed a new type of dissection knife, the irrigation cap-knife (the Kume cap-knife attachment, which uses a fixed snare), that facilitates ESD by just sliding over the muscle layer with a coagulating current. The ESD procedure using the irrigation cap-knife was performed in seven patients with intramucosal gastric cancer. The tumor was separated from the surrounding normal mucosa using the insulated-tip knife. Submucosal dissection was then performed by pushing our device along the muscle layer while applying a coagulating current, at the same time as a grasping forceps, deployed through the accessory channel, was used to push the lesion away from the muscle layer. The rate of en bloc resection was 100% (7/7). The irrigating cap-knife was extremely useful for ESD of large intramucosal cancers in the stomach.
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Affiliation(s)
- K Kume
- Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu, Japan.
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Kume K, Yamasaki M, Yoshikawa I, Otsuki M. Multi-camera system of the endoscopy: endoscopic mucosal resection for large gastric lesion using a novel 1-channel camera-hood. Endoscopy 2007; 39 Suppl 1:E186-7. [PMID: 17614068 DOI: 10.1055/s-2006-945170] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- K Kume
- The Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu, Japan
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Affiliation(s)
- K Kume
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyusyu, Japan
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Affiliation(s)
- K Kume
- The Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu, Japan.
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Ishihara T, Ozawa T, Otsuki M, Shimbo J, Tanaka K, Nishizawa M. Atypical micrographia associated with corticostriatal white matter lesions in systemic lupus erythematosus. J Neurol Neurosurg Psychiatry 2006; 77:993-4. [PMID: 16844958 PMCID: PMC2077619 DOI: 10.1136/jnnp.2005.083634] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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34
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Asaumi H, Watanabe S, Taguchi M, Tashiro M, Nagashio Y, Nomiyama Y, Nakamura H, Otsuki M. Green tea polyphenol (-)-epigallocatechin-3-gallate inhibits ethanol-induced activation of pancreatic stellate cells. Eur J Clin Invest 2006; 36:113-22. [PMID: 16436093 DOI: 10.1111/j.1365-2362.2006.01599.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [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: 01/11/2023]
Abstract
BACKGROUND Activated pancreatic stellate cells (PSCs) play a central role in the pathogenesis of pancreatic fibrogenesis and inflammation. Ethanol, a major cause of chronic pancreatitis, directly induces PSC activation and oxidative stress. Inhibition of PSC activation or stimulation to PSC might be an effective therapeutic strategy for the prevention of pancreatic fibrosis, and (-)-epigallocatechin-3-gallate (EGCG), a major component of green tea extracts, is a potent antioxidant of polyphenols. Therefore, we examined the mechanisms through which ethanol induces oxidative stress on PSCs and evaluated the effect of EGCG on activation and cell functions of ethanol-stimulated PSCs. MATERIALS AND METHODS The PSCs were isolated from the pancreas of male Wister rats with Nycodenz gradient methods and cells between passages one and four were used. Isolated PSCs were cultured with ethanol (50 mM) in the absence or presence of EGCG (5 microM or 25 microM). RESULTS The EGCG pre-treatment abolished ethanol-induced lipid peroxidation of the cell membrane, loss of total superoxide dismutase (SOD) activity and suppressed ethanol-induced gene expressions of Mn- and Cu/Zn-SOD. EGCG also suppressed ethanol-induced p38 mitogen-activated protein (MAP) kinase phosphorylation, alpha-smooth muscle actin production in PSCs and activated transforming growth factor-beta1 secretion into the medium. Furthermore, EGCG inhibited ethanol-induced type-I procollagen production and collagen secretion. In addition, EGCG inhibited transformation of freshly isolated cells to activated myofibroblast-like phenotype. CONCLUSIONS Our results suggest that green tea and polyphenols could prevent pancreatic fibrosis by inhibiting PSC activation through the antioxidative effect.
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Affiliation(s)
- H Asaumi
- Third Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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35
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Affiliation(s)
- M Yamasaki
- Third Department of Internal Medicine, University of Occupational and Enviromental Health, School of Medicine, Kitakyusyu, Japan
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36
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Affiliation(s)
- K Kume
- Third Dept. of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan
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37
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Tashiro M, Yoshikawa I, Matsuhashi T, Yamasaki T, Nishikawa S, Taguchi M, Yamasaki M, Kume K, Otsuki M. Images of interest. Gastrointestinal: inflammatory myoglandular polyp of the colon. J Gastroenterol Hepatol 2005; 20:1123. [PMID: 15955226 DOI: 10.1111/j.1440-1746.2005.04013.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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] [Indexed: 12/09/2022]
Affiliation(s)
- M Tashiro
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu, Japan
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Otsuki M, Soma Y, Yoshimura N, Miyashita K, Nagatsuka K, Naritomi H. How to improve repetition ability in patients with Wernicke's aphasia: the effect of a disguised task. J Neurol Neurosurg Psychiatry 2005; 76:733-5. [PMID: 15834037 PMCID: PMC1739639 DOI: 10.1136/jnnp.2003.028688] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dissociation "automatico-voluntaire" is a symptom observed in aphasic patients. We elucidated the difference between voluntary and involuntary speech output in a quantitative manner using the same task materials in nine patients with Wernicke's aphasia. All the patients exhibited better ability and less paraphasias in a repetition task elicited in a disguised condition than in an ordinary repetition condition. This result indicates that the output difficulty in Wernicke's aphasia might be a disability of volitional control over the language system.
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Affiliation(s)
- M Otsuki
- School of Psychological Science, Health Sciences University of Hokkaido, Kita-ku, Sapporo, Hokkaido 002-8072, Japan.
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39
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Yoshikawa H, Nakamura H, Tashiro M, Yamaguchi T, Taguchi M, Fukumitsu K, Otsuki M. Cholecystokinin-1 receptor protein up-regulation during pancreatic regeneration after acute haemorrhagic pancreatitis in rats. Eur J Clin Invest 2004; 34:498-507. [PMID: 15255787 DOI: 10.1111/j.1365-2362.2004.01363.x] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cholecystokinin (CCK) plays an important role in regeneration after acute pancreatitis in rats. The present study was aimed to elucidate the role of CCK-1 receptor (CCK-1R) in acute pancreatitis. We investigated the serial changes in CCK-1R mRNA and protein levels and their immunolocalization after acute haemorrhagic pancreatitis induced in male Wistar rats by retrograde intraductal infusion of 4% sodium taurocholate (100 micro L 100 g(-1) body weight). METHODS Histological changes were evaluated by haematoxylin and eosin staining. Pancreatic CCK-1R mRNA was determined by Northern blot analysis. Pancreatic CCK-1R protein was evaluated by immunoblot analysis and immunohistochemistry with a polyclonal antibody against rat CCK-1R protein. RESULTS Histological findings revealed that newly formed acinar cells were detected at the periphery of tubular complexes on day 14, and normal architecture of lobules was observed focally on day 21. Pancreatic CCK-1R mRNA peaked on day 3 and thereafter gradually decreased. Cholecystokinin-1R protein rapidly increased after induction of pancreatitits, reaching a maximal level on day 3. On day 3, intense immunoreactivity for CCK-1R protein was observed in both the cytoplasm of vacuolized acinar cells and the tubular complexes. In the regenerative process after acute haemorrhagic pancreatitis in rats, the expression of pancreatic CCK-1R mRNA and protein increased, and intense immunoreactivity for CCK-1R protein was observed in tubular complexes in the cytoplasm of regenerated acinar cells. CONCLUSION These results suggest that CCK-1R contributes to pancreatic regeneration after acute haemorrhagic pancreatitis and that tubular complexes are involved in the process of acinar cell regeneration following pancreatic injury.
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Affiliation(s)
- H Yoshikawa
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitayushu, Japan
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40
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Lundholm L, Movérare S, Steffensen KR, Nilsson M, Otsuki M, Ohlsson C, Gustafsson JA, Dahlman-Wright K. Gene expression profiling identifies liver X receptor alpha as an estrogen-regulated gene in mouse adipose tissue. J Mol Endocrinol 2004; 32:879-92. [PMID: 15171719 DOI: 10.1677/jme.0.0320879] [Citation(s) in RCA: 40] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Estrogens reduce adipose tissue mass in both humans and animals. The molecular mechanisms for this effect are, however, not well characterized. We took a gene expression profiling approach to study the direct effects of estrogen on mouse white adipose tissue (WAT). Female ovariectomized mice were treated for 10, 24 and 48 h with 17beta-estradiol or vehicle. RNA was extracted from gonadal fat and hybridized to Affymetrix MG-U74Av2 arrays. 17beta-Estradiol was shown to decrease mRNA expression of liver X receptor (LXR) alpha after 10 h of treatment compared with the vehicle control. The expression of several LXRalpha target genes, such as sterol regulatory element-binding protein 1c, apolipoprotein E, phospholipid transfer protein, ATP-binding cassette A1 and ATP-binding cassette G1, was similarly decreased. We furthermore identified a 1.5 kb LXRalpha promoter fragment that is negatively regulated by estrogen. Several genes involved in lipogenesis and lipolysis were identified as novel targets that could mediate estrogenic effects on adipose tissue. Finally, we show that ERalpha is the main estrogen receptor expressed in mouse white adipose tissue (WAT) with mRNA levels several hundred times higher than those of ERbeta mRNA.
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Affiliation(s)
- L Lundholm
- Department of Biosciences at Novum, Karolinska Institutet, SE-141 57 Huddinge, Sweden.
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Affiliation(s)
- K Kume
- Third Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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Goya K, Kitamura T, Inaba M, Otsuki M, Yamamoto H, Kurebayashi S, Sumitani S, Saito H, Kouhara H, Kasayama S, Kawase I. Risk factors for asymptomatic atherosclerosis in Japanese type 2 diabetic patients without diabetic microvascular complications. Metabolism 2003; 52:1302-6. [PMID: 14564682 DOI: 10.1016/s0026-0495(03)00197-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 10/27/2022]
Abstract
Atherosclerotic vascular diseases are frequently associated with diabetes mellitus. There has been increasing evidence showing that the atherosclerotic diseases in diabetic patients are distinct from diabetic microvascular complications as to their pathophysiology and epidemiology. However, we have no information on the prevalence of asymptomatic atherosclerosis in diabetic patients before the onset of microvascular diseases. In the present investigation, we aimed to evaluate risk factors for the atherosclerosis in type 2 diabetic patients without the microvascular diseases. For this purpose, we evaluated atherosclerotic change of carotid arteries in 125 Japanese type 2 diabetic patients who had neither atherosclerotic vascular diseases nor diabetic microvascular complications. When atherosclerotic change was defined as the mean intima-media thickness (IMT) of >/= 1.1 mm and/or the presence of plaque lesion, 50% of patients had atherosclerosis of the carotid arteries. Risk factors for the carotid atherosclerosis were age, low-density lipoprotein (LDL)-cholesterol, hypertension, and diabetes treatment. Age and LDL-cholesterol were associated with mean IMT. Age, diabetes treatment, LDL-cholesterol, and hypertension were positively associated with plaque lesion, while high-density lipoprotein (HDL)-cholesterol was negatively associated with it. Fasting plasma glucose, glycosylated hemoglobin (HbA(1c)), and known diabetes duration remained unassociated with any parameters of asymptomatic atherosclerosis of the carotid arteries. These results indicate that glycemic control is unrelated with asymptomatic atherosclerosis in type 2 diabetic patients without diabetic microvascular complications. Conventional risk factors and diabetes treatment are independently associated with atherosclerosis of the carotid arteries in these patients.
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Affiliation(s)
- K Goya
- Department of Molecular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Hamakawa T, Senawongse P, Otsuki M, Tagami J, Sato Y, Eguchi T, Shihoyama K, Kawachi M. Morphological changes on enamel after irradiation with femtosecond pulsed laser. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0531-5131(02)01313-4] [Citation(s) in RCA: 3] [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: 11/26/2022]
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Yamauti M, Senawongse P, Hamakawa T, Otsuki M, Tagami J, Sato S, Sato Y, Eguchi T. Effect of pulse duration of Er:YAG laser on the dentin surface morphology. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0531-5131(03)00127-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Goya K, Otsuki M, Xu X, Kasayama S. Effects of the prostaglandin I2 analogue, beraprost sodium, on vascular cell adhesion molecule-1 expression in human vascular endothelial cells and circulating vascular cell adhesion molecule-1 level in patients with type 2 diabetes mellitus. Metabolism 2003; 52:192-8. [PMID: 12601631 DOI: 10.1053/meta.2003.50025] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [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: 11/11/2022]
Abstract
Beraprost sodium is an orally active prostaglandin (PG)I(2) analogue, which has antiplatelet and vasodilating properties. In this study, we investigated the effects of beraprost on the expression of vascular cell adhesion molecule-1 (VCAM-1), one of the key molecules involved in atherosclerosis, in cultured vascular endothelial cells. In addition, we examined the effects of beraprost on circulating VCAM-1 level and atherosclerosis progression in patients with type 2 diabetes mellitus. Beraprost significantly decreased tumor necrosis factor-alpha (TNF-alpha)-induced VCAM-1 expression in human vascular endothelial cells. Beraprost also repressed human monocytoid U937 cell adhesion to the vascular endothelial cells. Twenty-five patients with type 2 diabetes mellitus who had atherosclerotic change of carotid arteries were enrolled for an open prospective study: 11 patients received beraprost for 3 years, while the other 14 did not. The 3-year changes of circulating VCAM-1 level, as well as those of carotid arterial intima-media thickness (IMT) were significantly lower in the patients receiving the beraprost treatment than that in the patients without the treatment. Thus, beraprost had an ability to repress the expression of VCAM-1 in human vascular endothelial cells. In addition, beraprost lowered circulating VCAM-1 level and prevented the increase of carotid IMT in patients with type 2 diabetes mellitus. Considering that circulating VCAM-1 and IMT are predictive of future vascular events, beraprost may have a beneficial effect on progression of atherosclerosis in diabetic patients.
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Affiliation(s)
- K Goya
- Department of Molecular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Yoshikawa I, Murata I, Kume K, Kanagawa K, Hirohata Y, Nakamura H, Otsuki M. Serum pepsinogen can predict response to H2-receptor antagonist in patients with functional dyspepsia. Aliment Pharmacol Ther 2002; 16:1805-9. [PMID: 12269975 DOI: 10.1046/j.1365-2036.2002.01352.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND Therapy for the relief of symptoms of functional dyspepsia is unpredictable. AIM To identify which patients may benefit from antisecretory therapy. METHODS Twenty-seven patients with functional dyspepsia were selected to receive H2-receptor antagonist (H2RA) treatment for 4 weeks. Serum pepsinogen A, pepsinogen C and gastrin were measured, and Helicobacter pylori status was determined. Symptoms were assessed at baseline and after H2RA treatment. RESULTS Fourteen patients were identified as H2RA responders and the remaining patients were non-responders. No differences were found between responders and non-responders with regard to serum pepsinogen A, pepsinogen C, gastrin and H. pylori status. However, the pepsinogen A/C ratio was significantly higher in responders than in non-responders. Ten of the 13 functional dyspepsia patients (77%) with a high value of the pepsinogen A/C ratio (> or = 4.5) achieved symptom resolution by H2RA, compared with only one of the eight patients (13%) with a low value of the pepsinogen A/C ratio (< or = 3.0). CONCLUSIONS The serum pepsinogen A/C ratio seems to identify those functional dyspepsia patients for whom acid control provides benefit. This ratio may be a practical tool for the management of functional dyspepsia patients.
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Affiliation(s)
- I Yoshikawa
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Japan, School of Medicine, Kitakyushu, Japan
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Kihara Y, Hori H, Murakami H, Hatakeyama Y, Yoshikawa I, Hamada T, Otsuki M. A case of POEMS syndrome associated with reactive amyloidosis and Waldenström's macroglobulinaemia. J Intern Med 2002; 252:255-8. [PMID: 12270006 DOI: 10.1046/j.1365-2796.2002.01030.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/20/2022]
Abstract
A72-year-old Japanese man presented with a 5-year history of fatigue, night sweats, oedema of dorsum of foot, muscle weakness, and paresthesia of the lower extremities. On examination, the patient fulfilled the diagnostic criteria for POEMS syndrome, but was unusual in that he also had underling Waldenström's macroglobulinaemia with IgM kappa. The M protein of POEMS syndrome is usually IgG and IgA with lambda light chains. To our knowledge, there are only three cases of POEMS syndrome with IgM kappa including our case. Autopsy findings revealed that small lymphocytes were more prominent than plasma cells in the bone marrow. These plasma cells were stained with IgM kappa. Amyloid deposits identified by Congo red stain were detected predominantly in the vascular walls of the gastrointestinal tract, pancreas and kidney. This amyloid protein was classified as amyloid associated protein. This is the first case of POEMS syndrome associated with reactive amyloidosis and Waldenström's macroglobulinaemiae.
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Affiliation(s)
- Y Kihara
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Japan
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Kanagawa K, Nakamura H, Murata I, Yosikawa I, Otsuki M. Increased gastric acid secretion in cholecystokinin-1 receptor-deficient Otsuka Long-Evans Tokushima fatty rats. Scand J Gastroenterol 2002; 37:9-16. [PMID: 11843043 DOI: 10.1080/003655202753387284] [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: 02/04/2023]
Abstract
BACKGROUND It is hypothesized that cholecystokinin stimulates acid secretion directly and indirectly by binding to CCK-2 (CCK-B/gastrin) receptors on both parietal and enterochromaffin-like cells. At the same time, however, it inhibits acid responses by stimulating the paracrine secretion of somatostatin from D cells and thereby exerts a tonic inhibition on the parietal cells. To test the validity of this hypothesis, we determined gastric acid secretion in the CCK-1 (CCK-A) receptor-deficient Otsuka Long-Evans Tokushima fatty (OLETF) rats. METHODS Gastric acid secretion was determined in the acute fistula OLETF and the control Long-Evans Tokushima Otsuka (LETO) rats. Plasma concentrations of gastrin, CCK, somatostatin and histamine were determined by radioimmunoassay. The levels of CCK-2 receptor mRNA in the mucosa of the glandular stomach were determined by Northern blot analysis. RESULTS Pentagastrin- and CCK-8-stimulated as well as basal acid outputs in OLETF rats were significantly higher than those in LETO rats. CCK-2 receptor antagonist reduced basal acid outputs and completely suppressed CCK-8-stimulated acid secretion in both strains. CCK-8 enhanced the pentagastrin-stimulated gastric acid output in OLETF rats, but not in LETO rats. In LETO rats, CCK-1 receptor antagonist increased CCK-8-stimulated gastric acid secretions to those in OLETF rats. The level of CCK-2 receptor mRNA in the stomach in OLETF rats was 2-fold higher than that in LETO rats. In OLETF rats, plasma concentrations of CCK and histamine were higher, whereas somatostatin concentrations were lower than those in LETO rats, with no change in basal plasma gastrin concentrations. CONCLUSIONS These results in the CCK-1 receptor-deficient OLETF rats confirmed that CCK stimulates acid secretion by binding to CCK-2 receptors, but at the same time inhibits acid responses by stimulating the paracrine secretion of somatostatin from D cells in the gastric mucosa.
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Affiliation(s)
- K Kanagawa
- Third Dept of Internal Medicine, University of Occupational and Environmental Health, Japan
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Ueda C, Hirohata Y, Kihara Y, Nakamura H, Abe S, Akahane K, Okamoto K, Itoh H, Otsuki M. Pancreatic cancer complicated by disseminated intravascular coagulation associated with production of tissue factor. J Gastroenterol 2001; 36:848-50. [PMID: 11777214 DOI: 10.1007/s005350170008] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [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: 02/04/2023]
Abstract
A 54-year-old man was diagnosed as having pancreatic cancer and disseminated intravascular coagulation. His plasma tissue factor level on the 11th hospital day was 996 pg/ml (normal range, 120-270 pg/ml). He was treated with gabexate mesilate, antithrombin III, and low-molecular-weight heparin. However, he died of multiple organ failure on the 17th hospital day. The histological finding was poorly differentiated ductal adenocarcinoma of the pancreas, and the production of tissue factor in this lesion was revealed. Tissue factor is a factor that initiates blood coagulation; thus, its expression in pancreatic cancer is one of the causes of coagulation abnormalities in this disease. Although one report has demonstrated immunoreactivity for tissue factor in pancreatic cancer, the patient's detailed clinical course was not mentioned in that report. This is the first report to prove that pancreatic cancer produced tissue factor in a patient with disseminated intravascular coagulation.
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Affiliation(s)
- C Ueda
- Third Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
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