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Ueki T, Sanematsu E, Furuya Y, Shinohara Y, Murakami Y, Miyazaki A, Sakamoto Y, Nakashima MN, Nakashima M. Relationship between vancomycin-associated nephrotoxicity and the number of combined nephrotoxic agents. Pharmazie 2021; 75:279-283. [PMID: 32539926 DOI: 10.1691/ph.2020.0393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Vancomycin is associated with nephrotoxicity; however, the influence of the number of combined nephrotoxic agents on the incidence of vancomycin nephrotoxicity has not been clarified. We investigated patient backgrounds in 148 inpatients who received vancomycin treatment. The patients were divided into nephrotoxicity (n=35) and non-nephrotoxicity (n=113) groups. A comparison of the patient backgrounds in the two groups revealed significant differences in weight, changes in serum creatinine before vancomycin administration, blood urea nitrogen to serum creatinine ratio, length of vancomycin therapy, vancomycin trough concentration, and number of combined nephrotoxic agents. Multiple logistic regression analysis using these six factors as autonomous variables showed that the highest vancomycin trough concentration (odds ratio, 1.080; 95% confidence interval, 1.030-1.140; p = 0.003) and the number of combined nephrotoxic agents (odds ratio, 1.590; 95% confidence interval, 1.120-2.260; p = 0.010) were significantly related to nephrotoxicity.
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Affiliation(s)
- T Ueki
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan; Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan; Department of Pharmacy Practice, Graduate School of Biomedical Sciences, Nagasaki University, Sojo University, Japan;,
| | - E Sanematsu
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Furuya
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Shinohara
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Murakami
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - A Miyazaki
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - Y Sakamoto
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - M N Nakashima
- Faculty of Pharmaceutical Sciences, Sojo University, Japan
| | - M Nakashima
- Department of Pharmacy Practice, Graduate School of Biomedical Sciences, Nagasaki University, Sojo University, Japan
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Yamazaki K, Yamanaka T, Shiozawa M, Manaka D, Kotaka M, Gamoh M, Shiomi A, Makiyama A, Munemoto Y, Rikiyama T, Fukunaga M, Ueki T, Shitara K, Shinkai H, Tanida N, Oki E, Sunami E, Ohtsu A, Maehara Y, Yoshino T. Oxaliplatin-based adjuvant chemotherapy duration (3 versus 6 months) for high-risk stage II colon cancer: the randomized phase III ACHIEVE-2 trial. Ann Oncol 2020; 32:77-84. [PMID: 33121997 DOI: 10.1016/j.annonc.2020.10.480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/24/2020] [Accepted: 10/16/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Oxaliplatin-based adjuvant chemotherapy may be associated with debilitating peripheral sensory neuropathy (PSN) in patients with high-risk stage II colon cancer. This open-label, multicenter, randomized phase III trial was conducted as a prospective pooled analysis to investigate the non-inferiority of 3 versus 6 months of adjuvant oxaliplatin-based chemotherapy. PATIENTS AND METHODS From 12 February 2014 to 31 January 2017, 525 Asian patients with high-risk stage II colon cancer were randomly assigned to 3- and 6-month treatment arms. The treatment consisted of either modified fluorouracil, leucovorin, and oxaliplatin (mFOLFOX6) or capecitabine combined with oxaliplatin (CAPOX). The primary end point was disease-free survival (DFS). The secondary end points were treatment compliance and safety. RESULTS Of the 525 randomized patients, 11 were not treated. Among the 514 participating patients (255 in the 3-month arm; 259 in the 6-month arm), 432 (84%) received CAPOX, and 184 (36%) presented with T4 as a high-risk factor for recurrence. The 3-year DFS rate was 88.2% in the 3-month arm and 87.9% in the 6-month arm [hazard ratio (HR), 1.12; 95% confidence interval (CI), 0.67-1.87]. With CAPOX, the 3-year DFS rate was 88.2% in the 3-month arm and 88.4% in the 6-month arm (HR, 1.13; 95% CI, 0.65-1.96). The discontinuation rate in the 3- and 6-month arms was 10% and 31% for mFOLFOX6 (P = 0.0193), and 15% and 35% for CAPOX (P < 0.0001), respectively. The incidence of grade ≥2 PSN was significantly lower in the 3-month arm than in the 6-month arm (16% and 43%, respectively, P < 0.0001). CONCLUSIONS Three months of combination therapy presented significantly less grade ≥2 PSN than the respective 6-month regimen. The shortened therapy duration did not affect the 3-year DFS rate, suggesting that a 3-month course of CAPOX can be an effective treatment option. CLINICAL TRIAL INFORMATION UMIN Clinical Trials Registry, UMIN000013036 and Japan Registry of Clinical Trials, jRCTs031180128.
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Affiliation(s)
- K Yamazaki
- Division of Gastrointestinal Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - T Yamanaka
- Department of Biostatistics, Yokohama City University School of Medicine, Kanagawa, Japan
| | - M Shiozawa
- Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Kanagawa, Japan
| | - D Manaka
- Department of Surgery, Gastrointestinal Center, Kyoto Katsura Hospital, Kyoto, Japan
| | - M Kotaka
- Department of Gastrointestinal Cancer Center, Sano Hospital, Hyogo, Japan
| | - M Gamoh
- Department of Medical Oncology, Osaki Citizen Hospital, Miyagi, Japan
| | - A Shiomi
- Division of Colon and Rectal Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - A Makiyama
- Department of Hematology/Oncology, Japan Community Healthcare Organization Kyushu Hospital, Fukuoka, Japan
| | - Y Munemoto
- Department of Surgery, Fukui-ken Saiseikai Hospital, Fukui, Japan
| | - T Rikiyama
- Department of Surgery, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - M Fukunaga
- Department of Surgery, Hyogo Prefectural Nishinomiya Hospital, Hyogo, Japan
| | - T Ueki
- Department of Surgery, Hamanomachi Hospital, Fukuoka, Japan
| | - K Shitara
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - H Shinkai
- Department of Surgery, Chigasaki Municipal Hospital, Kanagawa, Japan
| | - N Tanida
- Department of Surgery, Japanese Red Cross Kochi Hospital, Kochi, Japan
| | - E Oki
- Department of Surgery and Science, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - E Sunami
- Department of Tumor Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - A Ohtsu
- National Cancer Center Hospital East, Chiba, Japan
| | - Y Maehara
- Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan.
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3
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Shiomi A, Shiozawa M, Manaka D, Kotaka M, Sakamoto Y, Makiyama A, Munemoto Y, Rikiyama T, Fukunaga M, Ueki T, Shitara K, Shinkai H, Tanida N, Oki E, Yamanaka T, Sunami E, Yamazaki K, Ohtsu A, Maehara Y, Yoshino T. 415P Prognostic effect of postoperative serum carcinoembryonic antigen (CEA) combined with T4 versus T3 tumors in patients with high-risk stage 2 colon cancer: ACHIEVE-2 phase III randomized clinical trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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4
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Kotaka M, Shiozawa M, Manaka D, Sakamoto Y, Shiomi A, Makiyama A, Munemoto Y, Rikiyama T, Fukunaga M, Ueki T, Shitara K, Shinkai H, Tanida N, Oki E, Yamanaka T, Sunami E, Yamazaki K, Ohtsu A, Maehara Y, Yoshino T. 407P Long-term effect of peripheral sensory neuropathy (PSN) of 3 or 6 months oxaliplatin-based adjuvant chemotherapy for high-risk stage II colon cancer: ACHIEVE-2 as part of the IDEA collaboration. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.518] [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: 10/23/2022] Open
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5
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Yoshino T, Yamanaka T, Shiozawa M, Manaka D, Kotaka M, Gamoh M, Shiomi A, Makiyama A, Munemoto Y, Rikiyama T, Fukunaga M, Ueki T, Shitara K, Shinkai H, Tanida N, Yamazaki K, Sunami E, Ohtsu A, Maehara Y. ACHIEVE-2 trial: A randomized phase III trial investigating duration of adjuvant (adj) oxaliplatin-based therapy (3 vs 6 months) for patients (pts) with high-risk stage II colon cancer (CC). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz246.003] [Citation(s) in RCA: 2] [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: 11/13/2022] Open
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6
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Ochiai N, Nakachi Y, Yokoo T, Ichihara T, Eriksson T, Yonemoto Y, Kato T, Ogata H, Fujimoto N, Kobayashi Y, Udagawa N, Kaku S, Ueki T, Okazaki Y, Takahashi N, Suda T. Murine osteoclasts secrete serine protease HtrA1 capable of degrading osteoprotegerin in the bone microenvironment. Commun Biol 2019; 2:86. [PMID: 30854478 PMCID: PMC6397181 DOI: 10.1038/s42003-019-0334-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 02/01/2019] [Indexed: 12/26/2022] Open
Abstract
Osteoclasts are multinucleated cells responsible for bone resorption. The differentiation of osteoclasts from bone marrow macrophages (BMMs) is induced by receptor activator of NF-κB ligand (RANKL). Osteoprotegerin (OPG), a decoy receptor of RANKL, inhibits osteoclastogenesis by blocking RANKL signaling. Here we investigated the degradation of OPG in vitro. Osteoclasts, but not BMMs, secreted OPG-degrading enzymes. Using mass spectrometry and RNA-sequencing analysis, we identified high-temperature requirement A serine peptidase 1 (HtrA1) as an OPG-degrading enzyme. HtrA1 did not degrade OPG pre-reduced by dithiothreitol, suggesting that HtrA1 recognizes the three-dimensional structure of OPG. HtrA1 initially cleaved the amide bond between leucine 90 and glutamine 91 of OPG, then degraded OPG into small fragments. Inhibitory activity of OPG on RANKL-induced osteoclastogenesis was suppressed by adding HtrA1 in RAW 264.7 cell cultures. These results suggest that osteoclasts potentially prepare a microenvironment suitable for osteoclastogenesis. HtrA1 may be a novel drug target for osteoporosis.
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Affiliation(s)
- Nagahiro Ochiai
- Research Center for Genomic Medicine, Saitama Medical University, Saitama, 350-1298, Japan
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Yutaka Nakachi
- Research Center for Genomic Medicine, Saitama Medical University, Saitama, 350-1298, Japan
| | - Tomotaka Yokoo
- Research Center for Genomic Medicine, Saitama Medical University, Saitama, 350-1298, Japan
| | - Takahiro Ichihara
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Tore Eriksson
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Yuki Yonemoto
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Takehiko Kato
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Hitoshi Ogata
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Natsuko Fujimoto
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Yasuhiro Kobayashi
- Institutes for Oral Science, Matsumoto Dental University, Nagano, 399-0781, Japan
| | - Nobuyuki Udagawa
- Department of Biochemistry, Matsumoto Dental University, Nagano, 399-0781, Japan
| | - Shinsuke Kaku
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Tomokazu Ueki
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, 331-9530, Japan
| | - Yasushi Okazaki
- Research Center for Genomic Medicine, Saitama Medical University, Saitama, 350-1298, Japan
- Center for Genomic and Regenerative Medicine, Juntendo University, Tokyo, 113-8421, Japan
| | - Naoyuki Takahashi
- Institutes for Oral Science, Matsumoto Dental University, Nagano, 399-0781, Japan
| | - Tatsuo Suda
- Research Center for Genomic Medicine, Saitama Medical University, Saitama, 350-1298, Japan.
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Ogata M, Oshima K, Ikebe T, Takano K, Kanamori H, Kondo T, Ueda Y, Mori T, Hashimoto H, Ogawa H, Eto T, Ueki T, Miyamoto T, Ichinohe T, Atsuta Y, Fukuda T. Clinical characteristics and outcome of human herpesvirus-6 encephalitis after allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2017; 52:1563-1570. [PMID: 28783148 DOI: 10.1038/bmt.2017.175] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/09/2017] [Accepted: 06/29/2017] [Indexed: 11/09/2022]
Abstract
In this retrospective analysis using the Transplant Registry Unified Management Program, we identified 145 patients with human herpesvirus (HHV)-6 encephalitis among 6593 recipients. The cumulative incidences of HHV-6 encephalitis at 100 days after transplantation in all patients, recipients of bone marrow or PBSCs and recipients of cord blood were 2.3%, 1.6% and 5.0%, respectively. Risk factors identified in multivariate analysis were male sex, type of transplanted cells (relative risk in cord blood transplantation, 11.09, P<0.001; relative risk in transplantation from HLA-mismatched unrelated donor, 9.48, P<0.001; vs transplantation from HLA-matched related donor) and GvHD prophylaxis by calcineurin inhibitor alone. At 100 days after transplantation, the overall survival rate was 58.3% and 80.5% among patients with and without HHV-6 encephalitis, respectively (P<0.001). Neuropsychological sequelae remained in 57% of 121 evaluated patients. With both foscarnet and ganciclovir, full-dose therapy (foscarnet ⩾180 mg/kg, ganciclovir ⩾10 mg/kg) was associated with better response rate (foscarnet, 93% vs 74%, P=0.044; ganciclovir, 84% vs 58%, P=0.047). HHV-6 encephalitis is not rare not only in cord blood transplant recipients but also in recipients of HLA-mismatched unrelated donors. In this study, development of HHV-6 encephalitis was associated with a poor survival rate, and neurological sequelae remained in many patients.
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Affiliation(s)
- M Ogata
- Department of Medical Oncology and Hematology, Oita University Faculty of Medicine, Oita, Japan
| | - K Oshima
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - T Ikebe
- Department of Medical Oncology and Hematology, Oita University Faculty of Medicine, Oita, Japan
| | - K Takano
- Department of Medical Oncology and Hematology, Oita University Faculty of Medicine, Oita, Japan
| | - H Kanamori
- Department of Hematology, Kanagawa Cancer Center, Kanagawa, Japan
| | - T Kondo
- Department of Hematology/Oncology, Kyoto University Hospital, Kyoto, Japan
| | - Y Ueda
- Department of Hematology/Oncology, Kurashiki Central Hospital, Okayama, Japan
| | - T Mori
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - H Hashimoto
- Department of Hematology, Kobe General Hospital/Institute of Biomedical Research and Innovation, Hyogo, Japan
| | - H Ogawa
- Division of Hematology, Hyogo College of Medicine, Hyogo, Japan
| | - T Eto
- Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan
| | - T Ueki
- Department of Hematology, Nagano Red Cross Hospital, Nagano, Japan
| | - T Miyamoto
- Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Y Atsuta
- Japanese Data Center for Hematopoietic Cell Transplantation, Aichi, Japan.,Department of Healthcare Administration, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - T Fukuda
- Division of Hematopoietic Stem Cell Transplantation Division, National Cancer Center Hospital, Tokyo, Japan
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8
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Fujitsuka N, Asakawa A, Morinaga A, Amitani MS, Amitani H, Katsuura G, Sawada Y, Sudo Y, Uezono Y, Mochiki E, Sakata I, Sakai T, Hanazaki K, Yada T, Yakabi K, Sakuma E, Ueki T, Niijima A, Nakagawa K, Okubo N, Takeda H, Asaka M, Inui A. Increased ghrelin signaling prolongs survival in mouse models of human aging through activation of sirtuin1. Mol Psychiatry 2016; 21:1613-1623. [PMID: 26830139 PMCID: PMC5078860 DOI: 10.1038/mp.2015.220] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 12/01/2015] [Accepted: 12/15/2015] [Indexed: 02/07/2023]
Abstract
Caloric restriction (CR) is known to retard aging and delay functional decline as well as the onset of diseases in most organisms. Ghrelin is secreted from the stomach in response to CR and regulates energy metabolism. We hypothesized that in CR ghrelin has a role in protecting aging-related diseases. We examined the physiological mechanisms underlying the ghrelin system during the aging process in three mouse strains with different genetic and biochemical backgrounds as animal models of accelerated or normal human aging. The elevated plasma ghrelin concentration was observed in both klotho-deficient and senescence-accelerated mouse prone/8 (SAMP8) mice. Ghrelin treatment failed to stimulate appetite and prolong survival in klotho-deficient mice, suggesting the existence of ghrelin resistance in the process of aging. However, ghrelin antagonist hastened death and ghrelin signaling potentiators rikkunshito and atractylodin ameliorated several age-related diseases with decreased microglial activation in the brain and prolonged survival in klotho-deficient, SAMP8 and aged ICR mice. In vitro experiments, the elevated sirtuin1 (SIRT1) activity and protein expression through the cAMP-CREB pathway was observed after ghrelin and ghrelin potentiator treatment in ghrelin receptor 1a-expressing cells and human umbilical vein endothelial cells. Furthermore, rikkunshito increased hypothalamic SIRT1 activity and SIRT1 protein expression of the heart in the all three mouse models of aging. Pericarditis, myocardial calcification and atrophy of myocardial and muscle fiber were improved by treatment with rikkunshito. Ghrelin signaling may represent one of the mechanisms activated by CR, and potentiating ghrelin signaling may be useful to extend health and lifespan.
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Affiliation(s)
- N Fujitsuka
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan,Tsumura Research Laboratories, Tsumura, Ibaraki, Japan
| | - A Asakawa
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - A Morinaga
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - M S Amitani
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - H Amitani
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - G Katsuura
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Y Sawada
- Division of Cancer Pathophysiology, National Cancer Center Research Institute, Tokyo, Japan
| | - Y Sudo
- Division of Cancer Pathophysiology, National Cancer Center Research Institute, Tokyo, Japan
| | - Y Uezono
- Division of Cancer Pathophysiology, National Cancer Center Research Institute, Tokyo, Japan
| | - E Mochiki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - I Sakata
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - T Sakai
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - K Hanazaki
- Department of Surgery, Kochi Medical School, Kochi, Japan
| | - T Yada
- Department of Physiology, Jichi Medical University School of Medicine, Tochigi, Japan
| | - K Yakabi
- Department of Gastroenterology and Hepatology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - E Sakuma
- Department of Integrative Anatomy, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Ueki
- Department of Integrative Anatomy, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Niijima
- Department of Physiology, Niigata University School of Medicine, Niigata, Japan
| | - K Nakagawa
- Pathophysiology and Therapeutics, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - N Okubo
- Pathophysiology and Therapeutics, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - H Takeda
- Pathophysiology and Therapeutics, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan,Hokkaido University Hospital Gastroenterological Medicine, Sapporo, Japan
| | - M Asaka
- Cancer Preventive Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - A Inui
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan,Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan. E-mail:
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Nio K, Higashi D, Kumagai H, Arita S, Shirakawa T, Nakashima K, Shibata Y, Esaki M, Ueki T, Nakano M, Ariyama H, Kusaba H, Hirahashi M, Oda Y, Esaki T, Mitsugi K, Futami K, Akashi K, Baba E. 176P Safety analysis of chemotherapy for colitis-associated colorectal cancer in Japan. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Wakita S, Yamaguchi H, Ueki T, Usuki K, Kurosawa S, Kobayashi Y, Kawata E, Tajika K, Gomi S, Koizumi M, Fujiwara Y, Yui S, Fukunaga K, Ryotokuji T, Hirakawa T, Arai K, Kitano T, Kosaka F, Tamai H, Nakayama K, Fukuda T, Inokuchi K. Complex molecular genetic abnormalities involving three or more genetic mutations are important prognostic factors for acute myeloid leukemia. Leukemia 2015; 30:545-54. [DOI: 10.1038/leu.2015.288] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 10/04/2015] [Accepted: 10/07/2015] [Indexed: 01/07/2023]
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Hashinaga T, Miyazaki S, Ueki T, Horikawa H. Transformation and Deformation Behavior in Sputter-Deposited Ti-Ni-Cu Thin Films. ACTA ACUST UNITED AC 2014. [DOI: 10.1051/jp4/199558689] [Citation(s) in RCA: 7] [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: 11/14/2022]
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Kitamura K, Tamura Y, Ueki T, Ogata K, Noda S, Himeno R, Chuman H. Binding Free-Energy Calculation Is a Powerful Tool for Drug Optimization: Calculation and Measurement of Binding Free Energy for 7-Azaindole Derivatives to Glycogen Synthase Kinase-3β. J Chem Inf Model 2014; 54:1653-60. [DOI: 10.1021/ci400719v] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Kunihiro Kitamura
- Nihon Pharmaceutical University, 10281 Komuro, Ina-cho, Kitaadachi-gun, Saitama 362-0806, Japan
| | - Yunoshin Tamura
- Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Kita-ku, Saitama-shi, Saitama 331-9530, Japan
| | - Tomokazu Ueki
- Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Kita-ku, Saitama-shi, Saitama 331-9530, Japan
| | - Koji Ogata
- RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Shigeho Noda
- RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | | | - Hiroshi Chuman
- Institute of Health
Biosciences, University of Tokushima Graduate School, 1-78 Shomachi, Tokushima, Tokushima 770-8505, Japan
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Shimizu I, Ichikawa N, Takeda W, Kirihara T, Sato K, Ueki T, Hiroshima Y, Sumi M, Ueno M, Kobayashi H. Non-Thiotepa-Based HDT and ASCT for Relapsed/Refractory Secondary Central Nervous System Lymphoma. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Yanai S, Nakamura S, Hirahashi M, Ueki T, Matsumoto T, Kitazono T. Education and imaging. Gastrointestinal: MALT lymphoma of the small bowel accompanied by NSAID-induced enteropathy. J Gastroenterol Hepatol 2012; 27:1126. [PMID: 22621456 DOI: 10.1111/j.1440-1746.2012.07138.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- S Yanai
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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15
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Kawakami Z, Kanno H, Ueki T, Terawaki K, Tabuchi M, Ikarashi Y, Kase Y. Neuroprotective effects of yokukansan, a traditional Japanese medicine, on glutamate-mediated excitotoxicity in cultured cells. Neuroscience 2009; 159:1397-407. [PMID: 19409210 DOI: 10.1016/j.neuroscience.2009.02.004] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Revised: 12/01/2008] [Accepted: 02/02/2009] [Indexed: 11/16/2022]
Abstract
To clarify the mechanism of yokukansan (TJ-54), a traditional Japanese medicine, against glutamate-mediated excitotoxicity, the effects of TJ-54 on glutamate uptake function were first examined using cultured rat cortical astrocytes. Under thiamine-deficient conditions, the uptake of glutamate into astrocytes, and the levels of proteins and mRNA expressions of glutamate aspartate transporter of astrocytes significantly decreased. These decreases were ameliorated in a dose-dependent manner by treatment with TJ-54 (100-700 microg/ml). The improvement of glutamate uptake with TJ-54 was completely blocked by the glutamate transporter inhibitor DL-threo-beta-hydroxyaspartic acid. Effects of TJ-54 on glutamate-induced neuronal death were next examined by using cultured PC12 cells as a model for neurons. Addition of 17.5 mM glutamate to the culture medium induced an approximately 50% cell death, as evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. TJ-54 (1-1000 microg/ml) inhibited the cell death in a dose-dependent manner. Furthermore, competitive binding assays to glutamate receptors showed that TJ-54 bound potently to N-methyl-D-aspartate receptors, in particular, to its glutamate and glycine recognition sites. These results suggest that TJ-54 may exert a neuroprotective effect against glutamate-induced excitotoxicity not only by amelioration of dysfunction of astrocytes but also by direct protection of neuronal cells.
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Affiliation(s)
- Z Kawakami
- Tsumura Research Laboratories, Tsumura & Co, Inashiki-gun, Ibaraki, Japan.
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16
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Tsuruga E, Sato A, Ueki T, Nakashima K, Nakatomi Y, Ishikawa H, Yajima T, Sawa Y. Integrin alphavbeta3 regulates microfibril assembly in human periodontal ligament cells. Tissue Cell 2008; 41:85-9. [PMID: 18789468 DOI: 10.1016/j.tice.2008.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 07/18/2008] [Accepted: 07/25/2008] [Indexed: 10/21/2022]
Abstract
Fibrillin-1 is the major structural component of extracellular microfibrils. However, the mechanism by which extracellular fibrillin-1 assembles into microfibrils is not fully understood. Fibrillin-1 contains the Arg-Gly-Asp (RGD) motif, which may allow binding to RGD-recognizing integrins. We hypothesized that integrin alphavbeta3 on the cell surface of human periodontal ligament (PDL) fibroblasts may influence fibrillin-1 assembly into cell/matrix layers. We treated PDL fibroblasts with an integrin alphavbeta3-specific antagonist to examine fibrillin-1 assembly. Western blotting and immunofluorescence analysis showed that treatment with the integrin alphavbeta3 antagonist at 5 muM clearly abolished fibrillin-1 deposition. These results provide for the first time evidence that integrin alphavbeta3 regulates extracellular assembly of fibrillin-1, thereby modulating cell-mediated homeostasis of microfibrils.
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Affiliation(s)
- E Tsuruga
- Section of Functional Structure, Department of Morphological Biology, Division of Biomedical Sciences, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka 814-0193, Japan.
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17
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Ueki T, Nishidate T, Park JH, Lin ML, Shimo A, Hirata K, Nakamura Y, Katagiri T. Involvement of elevated expression of multiple cell-cycle regulator, DTL/RAMP (denticleless/RA-regulated nuclear matrix associated protein), in the growth of breast cancer cells. Oncogene 2008; 27:5672-83. [PMID: 18542055 DOI: 10.1038/onc.2008.186] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
To investigate the detailed molecular mechanism of mammary carcinogenesis and discover novel therapeutic targets, we previously analysed gene expression profiles of breast cancers. We here report characterization of a significant role of DTL/RAMP (denticleless/RA-regulated nuclear matrix associated protein) in mammary carcinogenesis. Semiquantitative RT-PCR and northern blot analyses confirmed upregulation of DTL/RAMP in the majority of breast cancer cases and all of breast cancer cell lines examined. Immunocytochemical and western blot analyses using anti-DTL/RAMP polyclonal antibody revealed cell-cycle-dependent localization of endogenous DTL/RAMP protein in breast cancer cells; nuclear localization was observed in cells at interphase and the protein was concentrated at the contractile ring in cytokinesis process. The expression level of DTL/RAMP protein became highest at G(1)/S phases, whereas its phosphorylation level was enhanced during mitotic phase. Treatment of breast cancer cells, T47D and HBC4, with small-interfering RNAs against DTL/RAMP effectively suppressed its expression and caused accumulation of G(2)/M cells, resulting in growth inhibition of cancer cells. We further demonstrate the in vitro phosphorylation of DTL/RAMP through an interaction with the mitotic kinase, Aurora kinase-B (AURKB). Interestingly, depletion of AURKB expression with siRNA in breast cancer cells reduced the phosphorylation of DTL/RAMP and decreased the stability of DTL/RAMP protein. These findings imply important roles of DTL/RAMP in growth of breast cancer cells and suggest that DTL/RAMP might be a promising molecular target for treatment of breast cancer.
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Affiliation(s)
- T Ueki
- Laboratory of Molecular Medicine, Human Genome Center, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
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18
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Affiliation(s)
- S Yanai
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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Honda K, Mizutani T, Higuchi N, Kanayama K, Sumida Y, Yoshinaga S, Itaba S, Akiho H, Yoshimura R, Nakamura K, Ueki T, Miyasaka Y, Takayanagi R. A Meckel's diverticulum with an ileal ulcer detected with double-balloon enteroscopy. Endoscopy 2007; 39 Suppl 1:E160. [PMID: 17570100 DOI: 10.1055/s-2006-925379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/10/2022]
Affiliation(s)
- K Honda
- Dept. of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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21
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Nakamura K, Ueki T, Sakiyama N, Yoshida M, Koike H, Hashimoto A. P.128 Clinical evaluation of oro-maxillofacial fractures treated in our department in recent five-year period. J Craniomaxillofac Surg 2006. [DOI: 10.1016/s1010-5182(06)60635-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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22
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Itakura S, Ohno K, Ueki T, Sato K, Kanayama N. Expression of Golf in the rat placenta: Possible implication in olfactory receptor transduction. Placenta 2006; 27:103-8. [PMID: 16310044 DOI: 10.1016/j.placenta.2004.12.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [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] [Received: 09/09/2004] [Revised: 12/12/2004] [Accepted: 12/15/2004] [Indexed: 11/23/2022]
Abstract
Olfactory receptors are G-protein coupled receptors and are encoded by an extremely large and diverse family of genes in mammals. There is increasing evidence that olfactory receptors are widely distributed in many organs, suggesting that olfactory receptors do not only recognize airborne odorants but also play important roles in chemotaxis or organ construction in embryo. In this study, we investigated whether olfactory receptors and their transduction molecule, Golf are expressed in the rat placenta. By RT-PCR, we identified 11 different olfactory receptor genes, which are all members of class II, in the rat placenta cDNAs, and our results suggested that particular members of the olfactory receptor gene family might be preferentially expressed in the placenta. By western blot analysis, we demonstrated that Golf protein is expressed in the placenta and its expression levels are developmentally regulated. We found that Golf immunoreactivity is exclusively localized to giant cell trophoblasts and spongiotrophoblast cells. These findings raised a possibility that a particular subset of olfactory receptors might be coupled with Golf and function in giant cell trophoblasts and spongiotrophoblast cells.
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Affiliation(s)
- S Itakura
- Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 432-3192, Japan
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23
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Muraoka S, Yamamoto M, Yagi N, Ueki T, Ye M, Shima F, Liao J, Okamoto H, Tamura A, Kataoka T. Crystal structure of the small G protein M-Ras and its implications. Acta Crystallogr A 2005. [DOI: 10.1107/s010876730509015x] [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: 11/11/2022] Open
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24
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Nakamura M, Katano M, Ueki T, Sada M, Oda H, Morisaki T. Percutaous trans-eshophageal gastrotubing (PTEG) improves QOL in patients involved with advanced gastro-intestinal carcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.8273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- M. Nakamura
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
| | - M. Katano
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
| | - T. Ueki
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
| | - M. Sada
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
| | - H. Oda
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
| | - T. Morisaki
- Sada Hosp, Fukuoka, Japan; Kyushu Univ, Fukuoka, Japan; Yakuin CA Clinic, Fukuoka, Japan
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Nakamura T, Ishii T, Miyata N, Taniguchi K, Tomishima Y, Ueki T, Sato M. Design and synthesis of 1-(4-benzoylphenyl)imidazole derivatives as new potent 20-HETE synthase inhibitors. Bioorg Med Chem Lett 2005; 14:5305-8. [PMID: 15454216 DOI: 10.1016/j.bmcl.2004.08.025] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 06/29/2004] [Revised: 08/11/2004] [Accepted: 08/11/2004] [Indexed: 11/26/2022]
Abstract
Structural modification of the novel 20-HETE synthase inhibitor 1 (IC(50) 310nM) is described. Introduction of a side chain with a carboxylic acid at the terminal position to 1 resulted in increased ability to inhibit human renal microsomal production of 20-HETE (7c: IC(50) 7.9nM), with good selectivity toward CYP2D6 and cyclooxygenases (COX)-1 and -2.
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Affiliation(s)
- Toshio Nakamura
- Medicinal Research Laboratories, Taisho Pharmaceutical Co., Ltd, 403, Yoshino-Cho 1-Chome, Kita-ku, Saitama-Shi, Saitama 331-9530, Japan.
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26
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Sasaki R, Ogiuthi H, Nakamura K, Ueki T, Okada Y, Asanami S, Chigono Y, Ichinokawa Y, Tachibana H, Chiba H. A clinical study of maxillofacial fractures in capital Tokyo. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81526-7] [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: 10/24/2022]
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Uchida K, Tominaga Y, Haba T, Katayama A, Matsuoka S, Goto N, Ueki T, Kimata T, Takeda A, Morozumi K, Takagi H, Nakao A. Clinical success of Neoral absorption profile. Transplant Proc 2004; 36:461S-464S. [PMID: 15041388 DOI: 10.1016/j.transproceed.2004.01.090] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We investigated the clinical benefits of cyclosporine microemulsion preconcentrate (CyA-MEPC; Neoral) in 16 de novo renal transplant recipients. The dose of CyA-MEPC was managed from AUC(0-4h), with serial target values of AUC(0-4h) at 5000-->4000-->3000-->2000 ng. hr/mL. The frequency of acute rejection episodes was 25%. The decreased renal function reached a low value of 12.5%, and creatinine was stable. Therefore, setting the target AUC(0-4h) value in the early phase at 5000 ng.hr/mL is an effective strategy to prevent acute rejection episodes. The single dose of Neoral given immediately after the renal transplant was 6 mg/kg (making a daily dose of 12 mg/kg). Thereafter, the dose-normalized AUC(0-4h) was set at a constant value to 4 weeks posttransplant. At week 4, the single dose was decreased to 4 mg/kg twice daily (a daily dose of 8 mg/kg). From these studies a daily dose of 12 mg/kg is suggested to be the appropriate amount for the first dose immediately after transplant. The renal biopsy performed at 6 months posttransplant showed neither cyclosporine-induced renal impairments, nor findings of chronic rejection, suggesting that 2000 ng.hr/mL is an appropriate target AUC(0-4h) value in the maintenance phase. These results suggest that it is possible to set the target value of C2 monitoring in the maintenance phase to a value slightly lower than that proposed from other studies.
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Affiliation(s)
- K Uchida
- Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya-city, Japan.
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Hayasaka D, Yoshii K, Ueki T, Iwasaki T, Takashima I. Sub-genomic replicons of Tick-borne encephalitis virus. Arch Virol 2004; 149:1245-56. [PMID: 15168210 DOI: 10.1007/s00705-003-0262-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2003] [Accepted: 10/20/2003] [Indexed: 12/01/2022]
Abstract
We constructed three sub-genomic replicons of Tick-borne encephalitis virus (TBEV) (Oshima REP, Oshima REP-GFP and Oshima REP-Neo) by deleting genes coding for structural proteins without or with insertion of green fluorescent protein (GFP) or Neo genes, respectively. BHK cells transfected with Oshima REP expressed the viral non-structural antigens in immunofluorescent and western blot analyses. GFP and viral antigens were co-expressed in the transfected cells with Oshima REP-GFP. G418-resistant cells harboring Oshima REP-Neo consistently expressed the antigens without showing any apparent CPE. These replicons constructed in this study will be useful in studies on the replication, assembly and packaging of TBEV, and to develop vaccines and gene-delivering systems.
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Affiliation(s)
- D Hayasaka
- Division of Clinical Investigation, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
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Shiraiwa H, Takei M, Yoshikawa T, Azuma T, Kato M, Mitamura K, Ueki T, Kida A, Horie T, Seki N, Sawada S. Detection of Grb-2-related Adaptor Protein Gene (GRAP) and Peptide Molecule in Salivary Glands of MRL/lpr Mice and Patients with Sjögren's Syndrome. J Int Med Res 2004; 32:284-91. [PMID: 15174222 DOI: 10.1177/147323000403200308] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The pathogenesis of Sjögren's syndrome (SS) is poorly understood. In this study we used an in-house mouse spleen cDNA microarray to analyse genes in spleens from MRL/lpr (an SS mouse model) mice. We have previously demonstrated that GRAP genes were up-regulated in salivary glands of the same mice. The microarray analysis showed that seven out of 2304 genes were highly expressed in spleens from the MRL/ lpr mice, one of which was the GRAP gene. In other words, the GRAP gene is highly expressed in the salivary glands and spleen of MRL/lpr mice. We also carried out immunohistochemical studies. Mouse and human Grb-2-related adaptor protein ( GRAP) antigens were expressed on ductal cells and infiltrating lymphocytes in salivary glands of MRL /lpr mice and SS patients, but only weakly in controls (MRL/+ mice and individuals with salivary cysts). These results suggest that the GRAP gene might have a role in the pathogenesis of SS.
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Affiliation(s)
- H Shiraiwa
- First Department of Internal Medicine, Nihon University School of Medicine, Nerima Hikarigaoka Nihon University Hospital, Tokyo, Japan
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Tsuruta T, Hasegawa M, Ueki T, Ogawa T, Ishikawa M, Wajiki M. Residual contrast medium in the cortex of the kidney around an infected renal cyst on CT: case report. Abdom Imaging 2003; 28:887-8. [PMID: 14753612 DOI: 10.1007/s00261-003-0019-9] [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] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
We present a case of a patient with an infected renal cyst. Delayed computed tomography showed residual contrast medium in the cortex of the kidney around it. Delayed computed tomography might be useful to identify an infected renal cyst.
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Affiliation(s)
- T Tsuruta
- Urology, Naganoken-Koseiren Shinonoi General Hospital, 666-1 Ai, Shinonoi, Nagano 388-8004, Japan
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31
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Nishiguchi M, Tokugawa K, Yamamoto K, Akama T, Nozawa Y, Chaki S, Ueki T, Kameo K, Okuyama S. Increase in secretion of glial cell line-derived neurotrophic factor from glial cell lines by inhibitors of vacuolar ATPase. Neurochem Int 2003; 42:493-8. [PMID: 12547648 DOI: 10.1016/s0197-0186(02)00139-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 11/16/2022]
Abstract
Glial cell line-derived neurotrophic factor (GDNF) was reported to be effective for treating subjects with neurodegenerative diseases such as Parkinson's disease. In search of finding a compound which promotes GDNF secretion, we found that concanamycin A (ConA), a vacuolar ATPase (V-type ATPase) inhibitor purified from Streptomyces diastatochromogens, enhanced GDNF secretion from glioma cells. The rat glioma cell line, C6, and the human glioma cell lines, U87MG and T98G, abundantly expressed GDNF mRNA, and secreted GDNF into culture media, and this event was potently enhanced by a Ca(2+) ionophore and by phorbol ester, as noted in other cells. ConA concentration dependently and potently increased GDNF release from C6, U87MG and T98G cells into culture media. In addition, ConA enhanced GDNF secretion from astrocyte primary cultures prepared from the human fetus with the same potency seen in glioma cell lines. Likewise, another V-type ATPase inhibitor, bafilomycinA1 facilitated GDNF release from C6, U87MG and T98G glioma cells, in a concentration-dependent manner. The potencies of these V-type ATPase inhibitors in enhancing GDNF secretion were consistent with those which inhibited V-type ATPase activity. These results suggest that blockade of V-type ATPase potently stimulates the secretion of GDNF from glial cells. The V-type ATPase inhibitors may be beneficial to use for the treatment of diseases in which increase in GDNF could be effective.
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Affiliation(s)
- Mariko Nishiguchi
- Medicinal Pharmacology Laboratory, Medicinal Research Laboratories, Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Saitama, Saitama 330-8530, Japan
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Takemoto K, Mizuno T, Yoshikawa T, Mishibata H, Ueki T, Uyama T, Miyoshi T, Sawa D, Matsumoto T, Wada N, Onoda H, Kojima K, Niemann B, Hettwer M, Rudolph D, Anderson E, Attwood D, Kern DP, Iwasaki H, Kihara H. X-ray microscopy in Ritsumeikan Synchrotron Radiation center. ACTA ACUST UNITED AC 2003. [DOI: 10.1051/jp4:200300029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Abstract
We investigated the agonistic activities of N(4)-(7-chloro-2-[(E)-2-(2-chloro-phenyl)-vinyl]-quinolin-4-yl)-N(1),N(1)-diethyl-pentane-1,4-diamine (XIB4035), at the glial cell line-derived neurotrophic factor (GDNF) family receptoralpha-1(GFRalpha-1) in Neuro-2A cells, a mouse neuroblastoma cell line which is a suitable model for investigating functions mediated through GFRalpha-1. XIB4035 concentration-dependently inhibited [(125)I]GDNF binding in Neuro-2A cells with an IC(50) of 10.4 microM. GDNF induced autophosphorylation of Ret protein, and promoted neurite outgrowth in Neuro-2A cells. XIB4035, like GDNF, induced Ret autophosphorylation in the Neuro-2A cells. Moreover, XIB4035 promoted neurite outgrowth in a concentration-dependent manner. These results show that XIB4035 may act as an agonist at GFRalpha-1 receptor complex, and mimic neurotrophic effects of GDNF in Neuro-2A cells. This is an interesting finding showing that a nonpeptidyl small molecule is capable of inducing activation of a receptor that normally bind a relatively large protein ligand such as GDNF.
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Affiliation(s)
- Kimiko Tokugawa
- CNS Diseases Research, Medicinal Pharmacology Laboratory, Medicinal Research Laboratories, Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Saitama, Saitama 330-8530, Japan
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Ishizuka O, Iijima K, Ishikawa M, Hirakata S, Nagai T, Ueki T, Nishizawa O. Importance of transition zone biopsies in patients undergoing ultrasound-guided prostate systemic biopsies for the first time. Urol Int 2002; 69:102-5. [PMID: 12187038 DOI: 10.1159/000065556] [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
INTRODUCTION We analyze the efficacy of routine transition zone biopsies in patients undergoing ultrasound-guided systemic prostate biopsies for the first time because of a suspicious digital rectal examination or an elevated serum prostate-specific antigen (PSA) level. PATIENTS AND METHODS During systemic prostate biopsy two or four additional transition zone biopsies were performed in 192 consecutive patients: in 182 because of a serum PSA concentration >4.1 ng/ml and in 10 because of a suspicious digital rectal examination and a serum PSA level <4.0 ng/ml. RESULTS The overall prostate cancer detection rate was 37.5% (72/192). In 24 patients (33.3%), cancer was only detected in the peripheral zone, in 3 (4.2%) only in the transition zone, and in 45 (62.5%) in both zones. CONCLUSION Transition zone biopsies performed at the first time of systemic prostate biopsy seem to have a low efficacy.
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Affiliation(s)
- O Ishizuka
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan.
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35
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Miura K, Kato K, Inoue K, Ueki T. Development of X-ray powder diffraction for protein crystallography using synchrotron radiation. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302096563] [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: 11/10/2022] Open
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36
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Shu F, Ohno K, Wang T, Kuriyama K, Ueki T, Kanayama N, Sato K. Developmental changes in PSD-95 and Narp mRNAs in the rat olfactory bulb. Brain Res Dev Brain Res 2001; 132:91-5. [PMID: 11744111 DOI: 10.1016/s0165-3806(01)00268-1] [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: 11/25/2022]
Abstract
Glutamate is the main neurotransmitter in the olfactory bulb. Recently, postsynaptic-density 95 (PSD-95) and neuronal activity-regulated pentraxin (Narp) have been reported to be pivotal for targeting and clustering of NMDA receptors and AMPA receptors, respectively. We thus investigated the expressions of PSD-95 and Narp mRNAs in the rat developing olfactory bulb. PSD-95 mRNA was already expressed in most neurons on the first postnatal day (P1). On the other hand, Narp mRNA expression was weakly seen only in mitral cells on P1. Thereafter, we found initial expression of Narp mRNA on P7 in periglomerular cells, and on P14 in granular cells, indicating that in the developing olfactory bulb PSD-95 mRNA expression precedes Narp mRNA expression, and that the expression pattern of Narp mRNA seems to be well correlated with the maturation of the neurons. These results indicate that PSD-95 and Narp play important roles in making efficient excitatory synapses in the developing rat olfactory bulb, and suggest that olfactory neurons might first express PSD-95 for making efficient NMDA receptors and thereafter express Narp for efficient AMPA receptors.
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Affiliation(s)
- F Shu
- Department of Anatomy and Neuroscience, Hamamatsu University School of Medicine, 1-20-1 Handa Yama, Hamamatsu, Shizuoka, 431-3192, Japan.
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Ueki T, Toyota M, Skinner H, Walter KM, Yeo CJ, Issa JP, Hruban RH, Goggins M. Identification and characterization of differentially methylated CpG islands in pancreatic carcinoma. Cancer Res 2001; 61:8540-6. [PMID: 11731440] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
To identify CpG islands differentially methylated in pancreatic adenocarcinoma, we used methylated CpG island amplification (MCA) coupled with representational difference analysis. Of 42 CpG islands identified by MCA/representational difference analysis, 7 CpG islands [methylated in carcinoma of the pancreas (MICP)] were differentially methylated in a panel of eight pancreatic cancer cell lines compared with normal pancreas. In a larger panel of 75 pancreatic adenocarcinomas, these 7 MICPs (ppENK, Cyclin G, ZBP, MICP25, 27, 36, and 38) were methylated in 93, 3, 9, 15, 48, 19, and 41% of cancers, respectively, by methylation-specific PCR but not in any of 15 normal pancreata. In pancreatic cancer cell lines, methylation of ppENK, a gene with known growth suppressive properties, was associated with transcriptional silencing that was reversible with 5-aza-2'-deoxycytidine treatment. Relationships between the methylation patterns of pancreatic adenocarcinomas and their clinicopathological features were also determined. Larger pancreatic cancers and those from older patients (P = 0.017) harbored more methylated loci than smaller tumors and those from younger patients (P = 0.017). ppENK, MICP25, and 27 were variably methylated in normal gastric, duodenal, and colonic mucosae. These data indicate that aberrant methylation of ppENK and its transcriptional repression is a common event in pancreatic carcinogenesis.
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Affiliation(s)
- T Ueki
- Department of Pathology, Johns Hopkins School of Medicine and the Johns Hopkins School of Public Health, Baltimore, Maryland 21205, USA
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Sato N, Rosty C, Jansen M, Fukushima N, Ueki T, Yeo CJ, Cameron JL, Iacobuzio-Donahue CA, Hruban RH, Goggins M. STK11/LKB1 Peutz-Jeghers gene inactivation in intraductal papillary-mucinous neoplasms of the pancreas. Am J Pathol 2001; 159:2017-22. [PMID: 11733352 PMCID: PMC1850608 DOI: 10.1016/s0002-9440(10)63053-2] [Citation(s) in RCA: 199] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Despite the growing awareness of intraductal papillary-mucinous neoplasms (IPMNs) of the pancreas among clinicians, the molecular features of IPMNs have not been well characterized. Previous reports suggest that inactivation of the STK11/LKB1, a tumor-suppressor gene responsible for Peutz-Jeghers syndrome (PJS), plays a role in the pathogenesis of gastrointestinal hamartomas as well as several cancers, including pancreatic adenocarcinoma. Using polymerase chain reaction amplification of five microsatellite markers from the 19p13.3 region harboring the STK11/LKB1 gene, we analyzed DNA from 22 IPMNs for loss of heterozygosity (LOH). LOH at 19p13.3 was identified in 2 of 2 (100%) IPMNs from patients with PJS and 5 of 20 (25%) from patients lacking features of PJS (7 of 22, 32% overall). Sequencing analysis of the STK11/LKB1 gene in these IPMNs with LOH revealed a germline mutation in one IPMN that arose in a patient with PJS and a somatic mutation in 1 of the 20 sporadic IPMNs. None of the 22 IPMNs showed hypermethylation of the STK11/LKB1 gene. These results suggest that the STK11/LKB1 gene is involved in the pathogenesis of some IPMNs.
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Affiliation(s)
- N Sato
- Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205, USA
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Kuriyama K, Ohno K, Shu F, Ueki T, Sato K. Developmental changes in gephyrin and collybistin mRNA expressions in the rat olfactory bulb. Brain Res Dev Brain Res 2001; 131:67-72. [PMID: 11718837 DOI: 10.1016/s0165-3806(01)00261-9] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
GABA and glycine are inhibitory neurotransmitters in the olfactory bulb. Recently, gephyrin, a receptor-associated peripheral membrane protein, and collybistin, a gephyrin-binding protein have been shown to be pivotal for the formation of postsynaptic glycine and GABA(A) receptor clusters. In this study, we, thus, examined expressions of gephyrin and collybistin mRNAs in the developing olfactory bulb using in situ hybridization. Although collybistin has two splice variants, we found only collybistin 1 isoform mRNA in the developing olfactory bulb. On the first postnatal day (P1), mitral cells abundantly expressed gephyrin and collybistin 1 mRNAs. However, their expressions were weak or not detected in the other regions. On P3, we first detected both transcripts in granule cells. It was on P7 when periglomerular cells first showed hybridization signals for gephyrin and collybistin mRNAs. The sequence of their expressions was well correlated with that of the maturation of individual neurons, suggesting that gephyrin and collybistin 1 mRNA expressions are induced when neurons arrive at their final destinations and ready for synaptogenesis, and that they are indispensable to make efficient inhibitory synapses in the developing rat olfactory bulb.
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Affiliation(s)
- K Kuriyama
- Department of Anatomy and Neuroscience, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192 Shizuoka, Japan.
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Abstract
Astrocytes are coupled via gap junction channels, predominantly formed by connexin-43 (Cx43), and contribute to neuronal function in the normal and diseased brain. In this study, we demonstrate that epidermal growth factor (EGF), applied to cortical astrocytes, results in a decrease in the expression of Cx43 mRNA and protein. We have further shown that the decrease is associated with the receptor tyrosine kinase pathway and the MEK inhibitor prevents EGF-stimulated down-regulation of Cx43 expression. These findings demonstrate a previously unknown function of EGF on cultured astrocytes, which may be relevant to the regulation of astrocytic growth and differentiation.
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Affiliation(s)
- T Ueki
- Department of Bioregulation Research, Nagoya City University Medical School, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan.
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Abstract
Optimal conditions for two-dimensional gel electrophoresis of total cellular proteins from Myxococcus xanthus were established. Using these conditions, we analyzed protein patterns of heat-shocked M. xanthus cells. Eighteen major spots and 15 minor spots were found to be induced by heat shock. From N-terminal sequences of 15 major spots, DnaK, GroEL, GroES, alkyl hydroperoxide reductase, aldehyde dehydrogenase, succinyl coenzyme A (CoA) synthetase, 30S ribosomal protein S6, and ATP synthase alpha subunit were identified. Three of the 18 major spots had an identical N-terminal sequence, indicating that they may be different forms of the same protein. Although a DnaK homologue, SglK, has been identified in M. xanthus (R. M. Weimer, C. Creghton, A. Stassinopoulos, P. Youderian, and P. L. Hartzell, J. Bacteriol. 180:5357-5368, 1998; Z. Yang, Y. Geng, and W. Shi, J. Bacteriol. 180:218-224, 1998), SglK was not induced by heat shock. In addition, there were seven substitutions within the N-terminal 30-residue sequence of the newly identified DnaK. This is the first report to demonstrate that succinyl CoA synthetase, 30S ribosomal protein S6, and ATP synthase alpha subunit are heat shock inducible.
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Affiliation(s)
- M Otani
- Faculty of Pharmaceutical Sciences, Kobe-Gakuin University, Nishi-ku, Kobe 651-2180, Japan
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Nojiri S, Daida H, Mokuno H, Iwama Y, Mae K, Ushio F, Ueki T. Association of serum antioxidant capacity with coronary artery disease in middle-aged men. Jpn Heart J 2001; 42:677-90. [PMID: 11933918 DOI: 10.1536/jhj.42.677] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The possible involvement of oxidative damage in the progression of atherosclerosis has been suggested. There is some evidence that antioxidant therapy may be beneficial for the prevention of coronary heart disease. In this study, we investigated the relationship between coronary artery disease (CAD) and serum antioxidative status by measuring the total antioxidant status (TAS). Other relevant antioxidants, such as retinol, alpha, gamma-tocopherol, ascorbic acid, alpha, beta-carotenoids, erythrocyte glutathione peroxidase (GSH-Px) and oxidative products, were also determined in 31 male CAD patients with angiographically defined CAD and 66 male controls, aged 40-70 years, in a case-control study. The TAS levels, ratio and the concentrations of retinol, albumin, total protein and HDL cholesterol were significantly lower in the CAD patients than in the controls (p<0.01), and alpha-tocopherol and alpha/gamma-tocopherol were significantly higher in the CAD patients than in the controls. The TAS level correlated positively with gamma-GTP, GPT, GOT and uric acid (p<0.01). A multiple regression analysis in the CAD patients revealed that the TAS levels correlated most negatively with the number of diseased vessels. The concentrations of carotenoids and GSH-Px, as well as the alpha/gamma-tocopherol ratio were also significantly associated. Although conditional logistic regression analysis suggested low levels of HDL-cholesterol to be a significant coronary risk factor (OR=5.1, 95% CI=1.09-24.3), the TAS level showed no significant independent contribution to CAD. This study demonstrated an association of antioxidant parameters with the atherosclerosis progression, however, it did not confirm antioxidants as an independent risk factor for CAD event.
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Affiliation(s)
- S Nojiri
- Tama Branch, Tokyo Metropolitan Research Laboratory of Public Health, Japan
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Ishikawa H, Nakata K, Mawatari F, Ueki T, Tsuruta S, Ido A, Nakao K, Kato Y, Ishii N, Eguchi K. Retrovirus-mediated gene therapy for hepatocellular carcinoma with reversely oriented therapeutic gene expression regulated by alpha-fetoprotein enhancer/promoter. Biochem Biophys Res Commun 2001; 287:1034-40. [PMID: 11573968 DOI: 10.1006/bbrc.2001.5684] [Citation(s) in RCA: 13] [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] [Indexed: 12/29/2022]
Abstract
In the present study, to achieve more selective and efficient therapeutic gene expression in hepatoma cells, we compared the therapeutic efficacies of the retroviral vectors expressing the herpes simplex virus thymidine kinase (HSV-tk) gene by the alpha-fetoprotein (AFP) enhancer/promoter in the forward (LNAFE0.3TK) and reverse (LN[AFE0.3TK]R) orientation to the vector long terminal repeats. By Northern blotting, the level of the HSV-tk mRNA in LN[AFE0.3TK]R-infected HepG2 human hepatoma cells was much higher than that in LNAFE0.3TK-infected cells. Consistent with this, LN[AFE0.3TK]R infection into HepG2 cells caused a greater cytotoxicity by ganciclovir exposure together with a stronger bystander effect than LNAFE0.3TK infection. In an animal model, intratumorous injection of LN[AFE0.3TK]R with ganciclovir treatment resulted in pronounced growth inhibition of HepG2 tumor. Thus, the reversely oriented therapeutic gene expression under the control of AFP enhancer/promoter is a possible candidate for the retrovirus-mediated gene therapy for hepatocellular carcinoma.
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Affiliation(s)
- H Ishikawa
- The First Department of Internal Medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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Abstract
All four possible stereoisomers of lactone II isolated from Streptomyces sp. Go 40/10, an autoregulator, have been efficiently synthesized in a stereoselective manner starting from (S)-malic acid and sorbic acid, and the absolute configuration was determined to be 2S, 3S, 9R, 10S.
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Affiliation(s)
- T Ueki
- Department of Chekistry,Graduate School of Science, Osaka City University, Sugimoto-cho, Sumiyoshi-ku, Osaka 558-8585, Japan
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Munakata R, Ueki T, Katakai H, Takao KI, Tadano KI. Synthetic study of macquarimicins: highly stereoselective construction of the AB-ring system. Org Lett 2001; 3:3029-32. [PMID: 11554835 DOI: 10.1021/ol016449u] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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
The highly stereoselective synthesis of the AB-ring system of macquarimicins, a novel class of microbial metabolites with inhibitory activity for neutral sphingomyelinase, has been achieved. The present synthesis features the highly stereocontrolled construction of the cis-tetrahydroindan structure via the intramolecular Diels-Alder reaction of an (E,Z,E)-1,6,8-nonatriene derived from D-glyceraldehyde acetonide. Reaction: see text.
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Affiliation(s)
- R Munakata
- Department of Applied Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Yonemasu H, Takashima M, Nishiyama KI, Ueki T, Yao T, Tanaka M, Tsuneyoshi M. Phenotypical characteristics of undifferentiated carcinoma of the pancreas: a comparison with pancreatic ductal adenocarcinoma and relevance of E-cadherin, alpha catenin and beta catenin expression. Oncol Rep 2001; 8:745-52. [PMID: 11410776 DOI: 10.3892/or.8.4.745] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The characteristics of undifferentiated (anaplastic) carcinoma (UC) of the pancreas were analysed and compared with those of poorly differentiated adenocarcinoma (PA). Eight cases of UC of the pancreas were evaluated by clinicopathological and immunohistochemical methods and compared with 20 cases of PA. Large size of the tumor, local invasion and lymph node metastasis were frequently seen in UC, leading to a significantly worse prognosis compared to that of PA (p=0.022). Immunohistochemically, E-cadherin expression was completely lost in 7/8 UC cases, whereas half the PA cases revealed a strong reactivity for E-cadherin. alpha- and beta-catenin expressions tended to be impaired in UC compared with PA. The results suggest that the altered expression of adhesion molecules is correlated with dedifferentiated change and is contributory to its aggressive biological behaviour.
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Affiliation(s)
- H Yonemasu
- Department of Anatomic Pathology, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 821-8582, Japan
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Ueki T, Uyama T, Kanamori K, Michibata H. Subunit C of the vacuolar-type ATPase from the vanadium-rich ascidian Ascidia sydneiensis samea rescued the pH sensitivity of yeast vma5 mutants. Mar Biotechnol (NY) 2001; 3:316-321. [PMID: 14961347 DOI: 10.1007/s1012601-0054-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A vanadium-accumulating ascidian, Ascidia sydneiensis samea, expresses vacuolar-type H(+)-ATPases (V-ATPases) on the vacuole membrane of the vanadium-containing blood cells known as vanadocytes. Previously, we showed that the contents of their vacuoles are extremely acidic and that a V-ATPase-specific inhibitor, bafilomycin A(1), neutralized the contents of the vacuoles. To understand the function of V-ATPase in vanadocytes, we isolated complementary DNA encoding subunit C of V-ATPase from vanadocytes because this subunit has been known to be responsible for the assembly of V-ATPases and to regulate the ATPase activity of V-ATPases. The cloned cDNA was 1443 nucleotides in length, and encoded a putative 384 amino acid protein. By expressing the ascidian cDNA for subunit C under the control of a galactose-inducible promoter, the pH-sensitive phenotype of the corresponding vma5 mutant of a budding yeast was rescued. This result showed that the ascidian cDNA for subunit C functioned in yeast cells.
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Affiliation(s)
- T Ueki
- Marine Biological Laboratory, Graduate School of Science, Hiroshima University, Mukaishima-cho 2445, Hiroshima 722-0073, Japan.
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Kuroiwa T, Kakishita E, Hamano T, Kataoka Y, Seto Y, Iwata N, Kaneda Y, Matsumoto K, Nakamura T, Ueki T, Fujimoto J, Iwasaki T. Hepatocyte growth factor ameliorates acute graft-versus-host disease and promotes hematopoietic function. J Clin Invest 2001; 107:1365-73. [PMID: 11390418 PMCID: PMC209319 DOI: 10.1172/jci11808] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.2] [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: 01/27/2023] Open
Abstract
Acute graft-versus-host disease (GVHD) is a major complication of bone marrow transplantation (BMT) and is characterized by hematopoietic dysfunction, immunosuppression, and tissue injury in the skin, liver, and intestinal mucosa. Hepatocyte growth factor (HGF), originally identified and cloned as a potent mitogen for hepatocytes, induces mitogenic and antiapoptotic activity in various epithelial cells and promotes hematopoiesis. Working in a murine model of acute GVHD, we performed repeated transfection of the human HGF cDNA into skeletal muscle and showed that this treatment inhibited apoptosis of intestinal epithelial cells and donor T-cell infiltration into the liver, thereby ameliorating the enteropathy and liver injury caused by acute GVHD. HGF also markedly suppressed IFN-gamma and TNF-alpha expression in the intestine and liver and decreased the serum IL-12. Furthermore, extramedullary hematopoiesis by donor cells was increased, and the survival rate was improved. These results suggest that HGF may be useful for controlling acute GVHD after allogeneic BMT.
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Affiliation(s)
- T Kuroiwa
- Second Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
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Miyata N, Taniguchi K, Seki T, Ishimoto T, Sato-Watanabe M, Yasuda Y, Doi M, Kametani S, Tomishima Y, Ueki T, Sato M, Kameo K. HET0016, a potent and selective inhibitor of 20-HETE synthesizing enzyme. Br J Pharmacol 2001; 133:325-9. [PMID: 11375247 PMCID: PMC1572803 DOI: 10.1038/sj.bjp.0704101] [Citation(s) in RCA: 161] [Impact Index Per Article: 7.0] [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: 12/14/2000] [Revised: 03/16/2001] [Accepted: 04/03/2001] [Indexed: 01/05/2023] Open
Abstract
The present study examined the inhibitory effects of N-hydroxy-N'-(4-butyl-2-methylphenyl)-formamidine (HET0016) on the renal metabolism of arachidonic acid by cytochrome P450 (CYP) enzymes. HET0016 exhibited a high degree of selectivity in inhibiting the formation of 20-hydroxy-5,8,11,14-eicosatetraenoic acid (20-HETE) in rat renal microsomes. The IC(50) value averaged 35+/-4 nM, whereas the IC(50) value for inhibition of the formation of epoxyeicosatrienoic acids by HET0016 averaged 2800+/-300 nM. In human renal microsomes, HET0016 potently inhibited the formation of 20-HETE with an IC(50) value of 8.9+/-2.7 nM. Higher concentrations of HET0016 also inhibited the CYP2C9, CYP2D6 and CYP3A4-catalysed substrates oxidation with IC(50) values of 3300, 83,900 and 71,000 nM. The IC(50) value for HET0016 on cyclo-oxygenase activity was 2300 nM. These results indicate that HET0016 is a potent and selective inhibitor of CYP enzymes responsible for the formation of 20-HETE in man and rat.
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Affiliation(s)
- N Miyata
- Medicinal Research Laboratories, Taisho Pharmaceutical Co. Ltd., 1-403 Yoshino-cho, Ohmiya, Saitama 330-8530, Japan.
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Abstract
BACKGROUND Adjuvant chemotherapy improves survival among patients with stage III colon cancer, but no reliable molecular predictors of outcome have been identified. METHODS We evaluated loss of chromosomal material (also called loss of heterozygosity or allelic loss) from chromosomes 18q, 17p, and 8p; cellular levels of p53 and p21(WAF1/CIP1) proteins; and microsatellite instability as molecular markers. We analyzed tumor tissue from 460 patients with stage III and high-risk stage II colon cancer who had been treated with various combinations of adjuvant fluorouracil, leucovorin, and levamisole to determine the ability of these markers to predict survival. RESULTS Loss of heterozygosity at 18q was present in 155 of 319 cancers (49 percent). High levels of microsatellite instability were found in 62 of 298 tumors (21 percent), and 38 of these 62 tumors (61 percent) had a mutation of the gene for the type II receptor for transforming growth factor beta1 (TGF-beta1). Among patients with microsatellite-stable stage III cancer, five-year overall survival after fluorouracil-based chemotherapy was 74 percent in those whose cancer retained 18q alleles and 50 percent in those with loss of 18q alleles (relative risk of death with loss at 18q, 2.75; 95 percent confidence interval, 1.34 to 5.65; P=0.006). The five-year survival rate among patients whose cancer had high levels of microsatellite instability was 74 percent in the presence of a mutated gene for the type II receptor for TGF-beta1 and 46 percent if the tumor did not have this mutation (relative risk of death, 2.90; 95 percent confidence interval, 1.14 to 7.35; P=0.03). CONCLUSIONS Retention of 18q alleles in microsatellite-stable cancers and mutation of the gene for the type II receptor for TGF-beta1 in cancers with high levels of microsatellite instability point to a favorable outcome after adjuvant chemotherapy with fluorouracil-based regimens for stage III colon cancer.
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Affiliation(s)
- T Watanabe
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA
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