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Kizawa R, Kuno M, Washino S, Shirotake S, Izumi K, Inoue M, Kagawa M, Takeshita H, Hyodo Y, Kawakami S, Saito K, Kageyama Y, Oyama M, Miyagawa T, Miura Y. 142P The predictive biomarker for immune-related adverse events (irAEs) in patients with metastatic renal cell carcinoma treated with the combination therapy of nivolumab plus ipilimumab: Musashino study-irAE. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Hayakawa N, Kaneko G, Oyama M, Kikuchi E. 156P The association between response to enfortumab vedotin therapy and primary tumor location in Japanese urothelial carcinoma patients. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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3
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Nakayama T, Takeshita H, Kagawa M, Washino S, Shirotake S, Miura Y, Hyodo Y, Izumi K, Inoue M, Miyagawa T, Oyama M, Saito K, Kageyama Y, Kawakami S. 139MO Prognostic significance of the mechanism of inflammatory markers in advanced renal cell carcinoma patients treated with nivolumab plus ipilimumab. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Nouneh K, Khaaissa Y, Talbi A, Taghzouti O, Belahmar A, El Mabrouk K, Zekriti M, El Mouakibi A, Oyama M. Improving Seeding Growth Method for Preparing Densely Attached Spherical Gold Nanoparticles on Solid Substrate. Int J Nanosci 2022. [DOI: 10.1142/s0219581x21500563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this paper, a modified seed-mediated growth approach to produce gold nanoparticles through HAuCl4 chemical reduction in water fabricated by growth process on indium tin oxide (ITO) was proposed. Particular attention was devoted to exploring the seeding and growth number cycle process in the formation of Au nanoparticles on the ITO surface. In agreement with the assumed analytical model, we have found that the absorbance maximum intensity [Formula: see text] depends substantially on the metal nanoparticles’ sizes, shape and density on the ITO surface. The deposited nanoparticles’ synthesized parameters were evaluated by the surface images obtained using field emission scanning electron microscopy (FE-SEM), UV-Vis spectroscopy and electrochemical measurements. The results show that the electrochemical responses of the as-prepared sample were significantly improved, in particular for the 2-cycle seeded particles followed by one-cycle growth.
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Affiliation(s)
- K. Nouneh
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - Y. Khaaissa
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - A. Talbi
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - O. K. Taghzouti
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | - A. Belahmar
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - K. El Mabrouk
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | - M. Zekriti
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | | | - M. Oyama
- Nanomaterials Chemistry Laboratory, Department of Materials Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8520, Japan
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Tateishi H, Tateishi M, Radwan MO, Masunaga T, Kawatashiro K, Oba Y, Oyama M, Inoue-Kitahashi N, Fujita M, Okamoto Y, Otsuka M. A New Inhibitor of ADAM17 Composed of a Zinc-Binding Dithiol Moiety and a Specificity Pocket-Binding Appendage. Chem Pharm Bull (Tokyo) 2021; 69:1123-1130. [PMID: 34719595 DOI: 10.1248/cpb.c21-00701] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A disintegrin and metalloproteinase 17 (ADAM17) is a zinc-dependent enzyme that catalyzes the cleavage of the extracellular domains of various transmembrane proteins. ADAM17 is regarded as a promising drug target for the suppression of various diseases, including cancer metastasis. We synthesized a new ADAM17 inhibitor, SN-4, composed of a zinc-binding dithiol moiety and an appendage that specifically binds to a pocket of ADAM17. We show that SN-4 inhibits the ability of ADAM17 to cleave tumor necrosis factor α (TNF-α) in vitro. This activity was reduced by the addition of zinc, indicating the importance of the zinc chelating dithiol moiety. Inhibition of TNF-α cleavage by SN-4 in cells was also observed, and with an IC50 of 3.22 µM, SN-4 showed slightly higher activity than the well-studied ADAM17 inhibitor marimastat. Furthermore, SN-4 was shown to inhibit cleavage of CD44 by ADAM17, but not by ADAM10, and to suppress cell invasion. Molecular docking showed good fitting of the specificity pocket-binding group and one SH of SN-4 and hinted at possible means of structural optimization. This study provides clues for the development of potent and selective ADAM17 inhibitors.
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Affiliation(s)
- Hiroshi Tateishi
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Mika Tateishi
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Mohamed O Radwan
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Division, National Research Centre
| | - Takuya Masunaga
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Kosuke Kawatashiro
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Yasunori Oba
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Misato Oyama
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Natsuki Inoue-Kitahashi
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Mikako Fujita
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
| | - Yoshinari Okamoto
- Department of Instrumental Analysis, Faculty of Life Sciences, Kumamoto University
| | - Masami Otsuka
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University
- Department of Drug Discovery, Science Farm Ltd
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Zhanzhaxina AS, Seiilgazy M, Jalmakhanbetova RI, Ishmuratova MY, Seilkhanov TM, Oyama M, Sarmurzina ZS, Tekebayeva ZB, Suleimen YM. Flavonoids from Pulicaria vulgaris and Their Antimicrobial Activity. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03185-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ogihara K, Kikuchi E, Okabe T, Hattori S, Yamashita R, Yoshimine S, Shirotake S, Matsumoto K, Mizuno R, Hara S, Oyama M, Niwakawa M, Oya M. Neutrophil-to-lymphocyte ratio is a useful biomarker for predicting worse clinical outcome in chemo-resistant urothelial carcinoma patients treated with pembrolizumab. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz425.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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8
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Aoki M, Koga K, Miyazaki M, Hamasaki M, Koshikawa N, Oyama M, Kozuka-Hata H, Seiki M, Toole BP, Nabeshima K. CD73 complexes with emmprin to regulate MMP-2 production from co-cultured sarcoma cells and fibroblasts. BMC Cancer 2019; 19:912. [PMID: 31510956 PMCID: PMC6739984 DOI: 10.1186/s12885-019-6127-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 09/03/2019] [Indexed: 12/14/2022] Open
Abstract
Background Interaction between cancer cells and fibroblasts mediated by extracellular matrix metalloproteinase inducer (emmprin, CD147) is important in the invasion and proliferation of cancer cells. However, the exact mechanism of emmprin mediated stimulation of matrix metalloprotease-2 (MMP-2) production from fibroblasts has not been elucidated. Our previous studies using an inhibitory peptide against emmprin suggested the presence of a molecule on the cell membrane which forms a complex with emmprin. Here we show that CD73 expressed on fibroblasts interacts with emmprin and is a required factor for MMP-2 production in co-cultures of sarcoma cells with fibroblasts. Methods CD73 along with CD99 was identified by mass spectrometry analysis as an emmprin interacting molecule from a co-culture of cancer cells (epithelioid sarcoma cell line FU-EPS-1) and fibroblasts (immortalized fibroblasts cell line ST353i). MMP-2 production was measured by immunoblot and ELISA. The formation of complexes of CD73 with emmprin was confirmed by immunoprecipitation, and their co-localization in tumor cells and fibroblasts was shown by fluorescent immunostaining and proximity ligation assays. Results Stimulated MMP-2 production in co-culture of cancer cells and fibroblasts was completely suppressed by siRNA knockdown of CD73, but not by CD99 knockdown. MMP-2 production was not suppressed by CD73-specific enzyme inhibitor (APCP). However, MMP-2 production was decreased by CD73 neutralizing antibodies, suggesting that CD73-mediated suppression of MMP-2 production is non-enzymatic. In human epithelioid sarcoma tissues, emmprin was immunohistochemically detected to be mainly expressed in tumor cells, and CD73 was expressed in fibroblasts and tumor cells: emmprin and CD73 were co-localized predominantly on tumor cells. Conclusion This study provides a novel insight into the role of CD73 in emmprin-mediated regulation of MMP-2 production.
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Affiliation(s)
- M Aoki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - K Koga
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - M Miyazaki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - M Hamasaki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - N Koshikawa
- Division of Cancer Cell Research, Kanagawa Cancer Center Research Institute, Yokohama, Japan.,Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - M Oyama
- Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - H Kozuka-Hata
- Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - M Seiki
- Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - B P Toole
- Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, USA
| | - K Nabeshima
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan.
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Yamawaki C, Oyama M, Yamaguchi Y, Ogita A, Tanaka T, Fujita KI. Curcumin potentiates the fungicidal effect of dodecanol by inhibiting drug efflux in wild-type budding yeast. Lett Appl Microbiol 2018; 68:17-23. [PMID: 30276838 DOI: 10.1111/lam.13083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/18/2018] [Accepted: 09/27/2018] [Indexed: 12/01/2022]
Abstract
Drug resistance commonly occurs when treating immunocompromised patients who have fungal infections. Curcumin, is a compound isolated from Curcuma longa, has been reported to inhibit drug efflux in several human cell lines and nonpathogenic budding yeast Saccharomyces cerevisiae cells that overexpresses the ATP-binding cassette (ABC) transporters S. cerevisiae Pdr5p and pathogenic Candida albicans Cdr1p and Cdr2p. The aim of this study was to examine the effects of curcumin on multidrug resistance in a wild-type strain of the budding yeast with an intrinsic expression system of multidrug efflux-related genes. The antifungal activity of dodecanol alone was temporary against S. cerevisiae; however, restoration of cell viability was completely inhibited when the cells were co-treated with dodecanol and curcumin. Furthermore, restriction of rhodamine 6G (R6G) efflux from the cells and intracellular accumulation of R6G were observed with curcumin treatment. Reverse transcription-polymerase chain reaction analysis revealed that curcumin reduced the dodecanol-induced overexpression of the ABC transporter-related genes PDR1, PDR3 and PDR5 to their control levels in untreated cells. Curcumin can directly restrict the glucose-induced drug efflux and inhibits the expression of the ABC transporter gene PDR5, and can thereby inhibit the efflux of dodecanol from S. cerevisiae cells. Curcumin is effective in potentiating the efficacy of antifungal drugs via its effects on ABC transporters. SIGNIFICANCE AND IMPACT OF THE STUDY: Drug resistance is common in immunocompromised patients with fungal infections. Curcumin, isolated from Curcuma longa, inhibits drug efflux in nonpathogenic budding yeast Saccharomyces cerevisiae cells overexpressing ABC transporters S. cerevisiae Pdr5p and pathogenic Candida albicans Cdr1p and Cdr2p. We examined the effects of curcumin on multidrug resistance in a wild-type strain of the budding yeast with an intrinsic expression system of multidrug efflux-related genes. Curcumin directly inhibited drug efflux and also suppressed the PDR5 expression, thereby enhancing the antifungal effects. Thus, curcumin potentially promotes the efficacy of antifungals via its effects on ABC transporters in wild-type fungal strains.
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Affiliation(s)
- C Yamawaki
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - M Oyama
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - Y Yamaguchi
- Graduate School of Science, Osaka City University, Osaka, Japan.,Advanced Research Institute for Natural Science and Technology, Osaka City University, Osaka, Japan
| | - A Ogita
- Graduate School of Science, Osaka City University, Osaka, Japan.,Research Center for Urban Health and Sports, Osaka City University, Osaka, Japan
| | - T Tanaka
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - K-I Fujita
- Graduate School of Science, Osaka City University, Osaka, Japan
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Mashima K, Osada T, Yoshizaki T, Noguti E, Watanabe Y, Tanikawa M, Oyama M, Suzuki N. Relationship between pareidolia and clinical features in patients with Parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1631] [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: 11/29/2022]
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Inoue D, Nagase R, Saika M, Nishimura K, Oyama M, Kitamura T. 140 THE STABILITY OF EPIGENETIC FACTOR ASXL1 IS REGULATED THROUGH UBIQUITINATION AND USP7-MEDIATED DEUBIQUITINATION. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30141-7] [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: 10/23/2022]
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12
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Matsumoto T, Kirimoto H, Miyaguchi S, Sugawara K, Tamaki H, Onishi H, Oyama M. P687: Effects of goal-directed finger movement on intracortical inhibition circuits in the ipsilateral primary motor cortex. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50781-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Oyama M, Miyagi Maeshima A, Tochigi N, Tsuta K, Kawachi R, Sakurai H, Watanabe S, Asamura H, Tsuda H. Prognostic Impact of Pleural Invasion in 1488 Patients with Surgically Resected Non-small Cell Lung Carcinoma. Jpn J Clin Oncol 2013; 43:540-6. [DOI: 10.1093/jjco/hyt039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fonfara S, Hetzel U, Oyama M, Tew S, Kipar A. Canine Dilated Cardiomyopathy is Associated with Increased Myocardial ICAM1 Expression. J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.213] [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: 10/27/2022]
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Iguchi K, Toyama T, Ito T, Shakui T, Usui S, Oyama M, Iinuma M, Hirano K. Antiandrogenic Activity of Resveratrol Analogs in Prostate Cancer LNCaP Cells. ACTA ACUST UNITED AC 2012; 33:1208-15. [DOI: 10.2164/jandrol.112.016782] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kuroda I, Sawada Y, Kodaira K, Oyama M, Ueno M. UP-02.165 Clinical Outcome: SV(+) Localized Advanced Prostate Cancer with PSA Over 50 Treated by HDR (High-Dose-Rate) Brachytherapy. Urology 2011. [DOI: 10.1016/j.urology.2011.07.983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nakamura K, Saito T, Kobayashi R, Oshiki R, Oyama M, Nishiwaki T, Nashimoto M, Tsuchiya Y. C-reactive protein predicts incident fracture in community-dwelling elderly Japanese women: the Muramatsu study. Osteoporos Int 2011; 22:2145-50. [PMID: 20936400 DOI: 10.1007/s00198-010-1425-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [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] [Received: 07/11/2010] [Accepted: 09/13/2010] [Indexed: 12/21/2022]
Abstract
SUMMARY In a 6-year cohort study of 751 community-dwelling elderly Japanese women, we found that C-reactive protein (CRP) is a significant predictor of osteoporotic fracture in elderly Asian women, who have significantly lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied. INTRODUCTION While CRP, a systemic inflammation marker, is thought to be associated with osteoporosis, evidence supporting this claim has been limited. We aimed to assess the association between CRP levels and incident osteoporotic fracture in elderly women. METHODS We conducted a cohort study with a follow-up period of 6 years. The study included 751 Japanese women aged 69 years or older. We measured serum high-sensitivity CRP (hs-CRP) levels as a major predictor. Covariates included age, body mass index, forearm bone mineral density, calcium intake, serum 25-hydroxyvitamin D, postural sway, osteoporosis medication, and physical activity. The primary outcome was incident limb and vertebral fractures. The Cox proportional hazards model was used to calculate the hazard ratio (HR) of fracture. RESULTS Median hs-CRP values in study participants were 0.16 mg/L in the lowest tertile, 0.36 mg/L in the medium tertile, and 1.14 mg/L in the highest tertile. The hs-CRP values in these women were substantially lower than in their Caucasian counterparts. Limb or vertebral fractures occurred in 50 subjects during 4,250 person-years. Low CRP levels were associated with low incidence of limb or vertebral fractures (P for trend = 0.035). The adjusted HRs of fracture for the medium and highest quartiles of hs-CRP levels, compared to the lowest quartile, were 2.22 (95% CI, 1.02-4.84) and 2.40 (95% CI, 1.10-5.24), respectively. CONCLUSIONS CRP is a significant predictor of osteoporotic fracture in elderly Asian women who have substantially lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Nakamura K, Saito T, Oyama M, Oshiki R, Kobayashi R, Nishiwaki T, Nashimoto M, Tsuchiya Y. Vitamin D sufficiency is associated with low incidence of limb and vertebral fractures in community-dwelling elderly Japanese women: the Muramatsu Study. Osteoporos Int 2011; 22:97-103. [PMID: 20333358 DOI: 10.1007/s00198-010-1213-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2010] [Accepted: 02/03/2010] [Indexed: 12/25/2022]
Abstract
UNLABELLED Data on the association between vitamin D status and osteoporotic fracture in Asians are sparse. We conducted a 6-year cohort study of 773 community-dwelling elderly Japanese women and found that serum 25-hydroxyvitamin D (25(OH)D) ≥ 71 nmol/L was associated with a reduced risk of osteoporotic limb and vertebral fractures. INTRODUCTION Data on the association between vitamin D status and osteoporotic fracture in Asians are sparse. This study aimed to clarify the association between vitamin D and other markers of nutritional status with the incidence of fracture in elderly Japanese women. METHODS We conducted a cohort study with a 6-year follow-up of 773 community-dwelling women aged 69 years and older. The 6-year follow-up ended in 2009. We assessed serum 25-hydroxyvitamin D, undercarboxylated osteocalcin (an index of vitamin K status), and calcium intake. The primary outcome was incident limb and vertebral fractures. Covariates were forearm bone mineral density (BMD), age, body mass index, osteoporosis treatment, and physical activity. RESULTS The mean serum 25(OH)D concentration was 60.0 nmol/L. Thirty-seven limb fractures and 14 vertebral fractures occurred in 4,392 person-years. Lower forearm BMD was significantly associated with increased incident fracture (P = 0.0242). The adjusted hazard ratios (HR) of fracture for the first quartile (<47.7 nmol/L) and the third quartile (59.2-70.9 nmol/L) of serum 25(OH)D, compared to the fourth quartile (≥71.0 nmol/L), were 2.82 (95% confidence interval (CI), 1.09-7.34) and 2.82 (95%CI, 1.09-7.27), respectively. The pooled adjusted HR was 0.42 (95%CI, 0.18-0.99) when the incidence in the fourth quartile (≥71.0 nmol/L) was compared to the other three quartiles combined (<71.0 nmol/L). Vitamin K status and calcium intake were not associated with incident fracture. CONCLUSIONS Sufficient vitamin D status, i.e., serum 25(OH)D ≥ 71 nmol/L, is associated with low limb and vertebral fracture risk in community-dwelling elderly women.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Kirimoto H, Ogata K, Onishi H, Oyama M, Tamaki H, Goto Y, Tobimatsu S. P20-11 Transcranial direct current stimulation over the motor association cortex induces plastic changes in the ipsilateral sensory-motor cortices. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60908-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nakamura K, Takahashi S, Oyama M, Oshiki R, Kobayashi R, Saito T, Yoshizawa Y, Tsuchiya Y. Prior nonhip limb fracture predicts subsequent hip fracture in institutionalized elderly people. Osteoporos Int 2010; 21:1411-6. [PMID: 19771487 DOI: 10.1007/s00198-009-1081-0] [Citation(s) in RCA: 5] [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] [Received: 06/25/2009] [Accepted: 08/26/2009] [Indexed: 10/20/2022]
Abstract
SUMMARY This 1-year cohort study of nursing home residents revealed that historical fractures of upper limbs or nonhip lower limbs were associated with hip fracture (hazard ratio = 2.14), independent of activities of daily living (ADL), mobility, dementia, weight, and type of nursing home. Prior nonhip fractures are useful for predicting of hip fracture in institutional settings. INTRODUCTION The aim of this study was to evaluate the utility of fracture history for the prediction of hip fracture in nursing home residents. METHODS This was a cohort study with a 1-year follow-up. Subjects were 8,905 residents of nursing homes in Niigata, Japan (mean age, 84.3 years). Fracture histories were obtained from nursing home medical records. ADL levels were assessed by caregivers. Hip fracture diagnosis was based on hospital medical records. RESULTS Subjects had fracture histories of upper limbs (5.0%), hip (14.0%), and nonhip lower limbs (4.6%). Among historical single fractures, only prior nonhip lower limbs significantly predicted subsequent fracture (adjusted hazard ratio, 2.43; 95% confidence interval (CI), 1.30-4.57). The stepwise method selected the best model, in which a combined historical fracture at upper limbs or nonhip lower limbs (adjusted hazard ratio, 2.14; 95% CI, 1.30-3.52), dependence, ADL levels, mobility, dementia, weight, and type of nursing home independently predicted subsequent hip fracture. CONCLUSIONS A fracture history at upper or nonhip lower limbs, in combination with other known risk factors, is useful for the prediction of future hip fracture in institutional settings.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Nakamura K, Oyama M, Takahashi S, Yoshizawa Y, Kobayashi R, Oshiki R, Saito T, Tsuchiya Y. Fracture incidence in nursing homes in Japan. Osteoporos Int 2010; 21:797-803. [PMID: 19618096 DOI: 10.1007/s00198-009-1015-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Accepted: 06/18/2009] [Indexed: 10/20/2022]
Abstract
UNLABELLED We conducted the first study to determine fracture incidence in institutionalized elderly people in East Asia. Fracture incidence was generally higher than in the general population but was not for all fracture types. Specific fracture prevention strategies for institutionalized people are needed. Ethnic differences in fracture incidence are also discussed. INTRODUCTION The aim of this study was to determine the incidence of fractures in nursing homes in Japan, where fracture is becoming an increasingly problematic health issue. METHODS We conducted a cohort study with a 1-year follow-up. Subjects were 8,905 residents (average age, 84.3 years) in nursing homes. Caregivers assessed activities of daily living levels using Barthel's index, and we collected demographic data of each resident. Fracture diagnosis was based on medical records from the hospitals where patients were admitted. RESULTS Incidence of hip fracture was 14.9 per 1,000 person-years for women and 9.7 for men. Incidence of forearm and upper-arm fractures was 1.9 and 5.1 for women and 0.5 and 2.1 for men, respectively. Hip and upper-arm fracture rates were higher than in the general population, but forearm fracture rates were lower. Hazard ratio of fracture incidence in totally dependent to partially dependent or independent subjects was 0.14 (95%CI 0.05-0.33) for hip fracture and 0.34 (95%CI 0.23-0.50) for all fractures. CONCLUSIONS Fracture incidence in institutionalized elderly people is generally higher but is not higher for all types of fractures than the general population. In addition, totally dependent persons had a much lower risk of hip fracture.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan.
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Huang M, Sato H, Hagiwara K, watanabe A, Ikeda F, Oyama M, Yoneda M, Kai C. Analysis of phosphorylation residues on Nipah virus nucleoprotein and role of the phosphorylation. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.661] [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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Nakagawa I, Nakamura K, Oyama M, Yamazaki O, Ishigami K, Tsuchiya Y, Yamamoto M. Long-term effects of the Niigata-Chuetsu earthquake in Japan on acute myocardial infarction mortality: an analysis of death certificate data. Heart 2009; 95:2009-13. [DOI: 10.1136/hrt.2009.174201] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Ishida M, Hasegawa M, Kanao K, Oyama M, Nakajima Y. Non-palpable Testicular Embryonal Carcinoma Diagnosed by Ultrasound: A Case Report. Jpn J Clin Oncol 2008; 39:124-126. [DOI: 10.1093/jjco/hyn141] [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: 08/30/2023] Open
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25
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Shinyashiki N, Shinohara M, Iwata Y, Goto T, Oyama M, Suzuki S, Yamamoto W, Yagihara S, Inoue T, Oyaizu S, Yamamoto S, Ngai KL, Capaccioli S. The Glass Transition and Dielectric Secondary Relaxation of Fructose−Water Mixtures. J Phys Chem B 2008; 112:15470-7. [DOI: 10.1021/jp807038r] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - M. Shinohara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - Y. Iwata
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - T. Goto
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - M. Oyama
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - S. Suzuki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - W. Yamamoto
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - S. Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - T. Inoue
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - S. Oyaizu
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - S. Yamamoto
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - K. L. Ngai
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - S. Capaccioli
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan, Research & Development Division, Nichirei Foods INC, 9, Shinminato, Mihama-ku, Chiba 261-8545, Japan, Naval Research Laboratory, Washington, D.C. 20375-5320, and Dipartimento di Fisica, Università di Pisa and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
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Ozga K, Kawaharamura T, Ali Umar A, Oyama M, Nouneh K, Slezak A, Fujita S, Piasecki M, Reshak AH, Kityk IV. Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films. Nanotechnology 2008; 19:185709. [PMID: 21825705 DOI: 10.1088/0957-4484/19/18/185709] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Photoinduced second harmonic generation (SHG) in Au nanoparticle-deposited ZnO nanocrystallite (NC) films was explored by applying bicolor coherent treatment of a Nd-YAG laser with wavelength 1.06 µm and its SHG. We have established that coexistence of the ZnO and Au nanoparticles gives a substantially larger SHG output with respect to pure ZnO NC deposited on the glass substrate. It was established that the value of the second order susceptibility is about 23 pm V(-1). Better nonlinear optical susceptibilities were obtained during phototreatment at temperatures near 30-35 °C for the Au doped samples. The samples without gold NCs are temperature independent. Generally an increasing temperature leads to a decrease of the optical SHG.
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Affiliation(s)
- K Ozga
- Institute of Biology and Biophysics, Technical University Czestochowa, PL-42214, Aleja Armii Krajowej 36, Czestochowa, Poland
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Fujimori A, Yorifuji M, Sakai M, Oyama M, Nakao N, Tokuyama M, Fukagawa M. Low-calcium dialysate improves mineral metabolism in hemodialysis patients. Clin Nephrol 2007; 67:20-4. [PMID: 17269595 DOI: 10.5414/cnp67020] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The Kidney Disease Outcomes Quality Initiative (K/DOQI) Guidelines for Bone Metabolism and Disease in Chronic Kidney Disease recommend 1.25 mmol/l Ca dialysate for both hemodialysis and peritoneal dialysis, while 1.5 mmol/l Ca dialysate has been used in our dialysis center. METHODS Therefore, we switched the dialysate calcium concentration from 1.5 - 1.25 mmol/l and observed the effects on serum calcium (S-Ca), phosphorus (S-P), 1-84 parathyroid hormone (whole PTH, w-PTH), bone-specific alkaline phosphatase (BAP), and tartrate-resistant acid phosphatase isoform 5b (TRACP-5b) for 6 months in 58 hemodialysis patients. Prescription of active vitamin D (VD) metabolites and Ca carbonate was increased in response to the changes in laboratory data. RESULTS Decrease of S-Ca was evident at 2 weeks and S-Ca remained low for 6 months. Transient elevation of S-P, which might be caused by stimulated bone resorption, was observed after the switch. In patients with low PTH (w-PTH less than 90 pg/ml before the switch), continuous increase of w-PTH, BAP, and TRACP-5b was observed. This appeared to be a favorable response because the risk ofadynamic bone disease was high in this group of patients. On the other hand, acute elevation of the 3 parameters was well-controlled in patients with moderate and high PTH (w-PTH from 90 - 180 pg/ml, w-PTH more than 180 pg/ml, respectively) by increased dosage of active VD. CONCLUSION These results demonstrate that 1.25 mmol/l Ca dialysate improved mineral metabolism by lowering S-Ca and releasing oversuppression of PTH. Our data also suggest that appropriate use of active VD could prevent acute rise of PTH.
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Affiliation(s)
- A Fujimori
- Department of Artificial Kidney, Konan Hospital, 1-5-16 Kamokogahara, Higashinada-ku, Kobe 658-0064, Japan.
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Oyama M, Kino Y, Machida M, Onishi H, Yamamoto S. Postoperative management of the dorsal fracture-dislocation of the proximal interphalangeal joint. Tech Hand Up Extrem Surg 2006; 3:66-73. [PMID: 16609458 DOI: 10.1097/00130911-199903000-00010] [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: 11/26/2022]
Affiliation(s)
- M Oyama
- Department of Restorative Neuromuscular Surgery and Rehabilitation, Tohoku University Graduate School of Medicine, Seiryo-machi, Sendai, Japan
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Hamamoto K, Micheletto R, Oyama M, Umar AA, Kawai S, Kawakami Y. An original planar multireflection system for sensing using the local surface plasmon resonance of gold nanospheres. ACTA ACUST UNITED AC 2006. [DOI: 10.1088/1464-4258/8/3/007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Pulpal wound healing followed by cavity preparation may involve reactionary or reparative dentinogenesis in relation to the cavity position; however, little is known about the molecular responses. We aimed to isolate and analyze genes induced or suppressed in the wounded pulp to identify molecular processes involved in the pulp responses to injury. Twenty-three cDNAs were isolated by cDNA subtraction between healthy and wounded pulp of rats. By library screening, we identified rat 14.7K-interacting protein (rFIP)-2A and B genes homologous to human FIP-2, being involved in regulating membrane trafficking and cellular morphogenesis. RT-PCR analysis showed induction for only rFIP-2B in the wounded pulp. In situ hybridization analysis revealed that both rFIP-2s were expressed strongly in condensing mesenchymal cells of the palatal process and surrounding Meckel's cartilage, but not in intramembranous chondrogenic cells. Thus, up-regulated rFIP-2B expression may play a role in regulating membrane trafficking or cellular morphogenesis of these embryonic and wounded pulpal cells.
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Affiliation(s)
- M Oyama
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikatacho, Okayama, 700-8525, Japan
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31
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Oyama M, Shimbo M, Inoue K, Tohyama N, Goka T, Nishimura H, Ogino T. Evaluation of Absorbed Dose in Respiratory Gated Radiotherapy Using a Phantom System that Simulates Patient Respiration. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Fukuno K, Tsurumi H, Yamada T, Oyama M, Matsuyama T, Terakura S, Kodera Y, Moriwaki H. Lymphoid blast crisis of chronic myelogenous leukemia occurring more than 11 years after receiving an allogeneic bone marrow transplant for chronic myelogenous leukemia in myeloid blast crisis at onset. Bone Marrow Transplant 2003; 31:211-3. [PMID: 12621483 DOI: 10.1038/sj.bmt.1703820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A 25-year-old male developed lymphoid blast crisis (BC) of chronic myelogenous leukemia (CML) more than 11 years after receiving an allogeneic bone marrow transplant (alloBMT) for CML with myeloid BC at presentation from his HLA-identical brother. The lymphoid BC of CML probably occurred without a preceding chronic phase of CML. This case illustrates the difficulties involved in determining the appropriate length of follow-up after alloBMT.
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Affiliation(s)
- K Fukuno
- Department of Internal Medicine, Kisogawa Hospital, Aichi, Japan
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33
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Oyama M, Yazaki T, Ohigashi T, Hoshi M, Horiguchi Y, Oya M, Asakura H, Nakashima J, Tachibana M, Uyemura K, Murai M. Application of conditionally replicating herpes vector for gene therapy treatment of urologic neoplasms. Mol Urol 2002; 4:83-7. [PMID: 12006247 DOI: 10.1089/10915360050138639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Herpes vector has been widely used for experimental gene therapy. We herein review the strategies of such therapy for the treatment of urologic neoplasms. Most experimental studies of genetically altered viruses have employed replication-incompetent vectors. However, such viruses are unable to infect additional cells subsequent to the initial infection event. Therefore, this strategy has relied heavily on the bystander effect because a large number of noninfected tumor cells remain. Conditionally replicating herpes vector G207 has been developed in order to overcome potential problems of safety and tumor specificity for human use. It has been used to treat malignant brain tumors because of its neural tropism. In the last few years, applications of G207 for non-neural tumors have been reported. Because G207 may be useful for the treatment of urologic malignant tumors, we evaluated the antitumor effect against several types of tumor cells both in vitro and in vivo. Our data suggest that G207 may be applicable for the treatment of urologic malignant tumors.
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Affiliation(s)
- M Oyama
- Department of Urology, School of Medicine, Keio University, Tokyo, Japan.
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Abstract
We analyzed the regulation by iron of alkaline proteinase (AP) production in Pseudomonas aeruginosa. Extracellular AP production was detected from the mid-logarithmic to the stationary phase by an antibody-based assay system, and was strongly repressed by iron in the medium. This repression was shown by Northern hybridization and primer extension to occur at the level of transcription. The primer extension analysis revealed that the start point of transcription of AP gene was the nucleotide position -84 from the start point of translation. Furthermore, we investigated whether this transcriptional repression involved PvdS protein. Using the mutant strain of pvdS, the alternative sigma factor gene revealed that the PvdS protein is required for the full expression of AP, and a previous study showed that expression of pvdS is also repressed by iron. Therefore, we thought that one mechanism of repression of AP production operated through reduction of the PvdS protein level. Purified AP decomposed the transferrin, and released iron from it. Purified AP added to the medium containing transferrin as the only iron source enhanced the growth of P. aeruginosa. Moreover, mutation in the AP gene decreased the growth rate in the medium containing the transferrin as the only iron source. These results clearly indicated that AP expression should occur in a free-iron-deficient environment and emphasized the importance of AP to iron acquisition in the infection site.
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Affiliation(s)
- T Shigematsu
- Department of Bacteriology Yokohama City University School of Medicine, Yokohama, Kanagawa, Japan
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Abstract
A prospective study of 110 patients was carried out to determine the pathogenic significance of trauma to the upper body in the development of neural compressive irritation at the thoracic outlet. Twenty-nine patients were reviewed as cervical strain injuries (N group), 25 patients as probable neurogenic thoracic outlet syndrome (NTOS) (PT group), 39 patients as definite NTOS (T group), and 17 patients as NTOS associated with cervical disc disease (CD-T group). The time lapse between accident and diagnosis and the duration of treatment were significantly longer in T patients or CD-T patients than those in the N group. Radiography of NTOS patients also showed a higher percentage of cervical spine-length/height ratio. Traumatic NTOS would suggest two types related to direct damage of scalene muscles that included some physical aspects of cervical disc disease. Pathogenesis provided a key to the resolution of more complex posttraumatic problems of whiplash injury.
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Affiliation(s)
- Y Kai
- Orthopaedic Surgery, Fukuoka City Hospital, Fukuoka, Japan
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Abstract
We describe a variant form, French-American-British (FAB) M3v, of acute promyelocytic leukemia (APL; FAB M3) with atypical morphocytochemical features, immature antigens (CD34 and HLA-DR) and marked myelofibrosis (MF). Usual APL cells do not express CD34 or HLA-DR antigens. MF may be more frequently observed in patients with M3v expressing CD34 and HLA-DR antigens than in patients with M3 lacking these antigens. Despite marked MF, recovery from the hypoplastic phase in the case we described was not delayed after remission induction chemotherapy consisting of enocitabine, 200 mg/mi2 intravenously; 6-mercaptopurine, 70 mg/m2 orally for 10 days; daunorubicin 40 mg/m2 intravenously for 4 days; and all-trans retinoic acid 45 mg/M2 orally between days 20 and 33. The promyelocytic leukemia-retinoic-acid receptor (PML-RAR) alpha fusion transcript, according to reverse transcriptase-polymerase chain reaction (RT-PCR), became negative in the bone marrow after the first course of consolidation chemotherapy. Autologous peripheral blood stem cell transplantation (autoPBSCT) was carried out after 3 courses of consolidation chemotherapy. There were no specific complications based on MF throughout the clinical course, including engraftment in autoPBSCT. The patient has been without MF and in molecular remission, defined as disappearance of the PML-RAR alpha fusion transcript according to RT-PCR, for 21 months. Longer follow-up will clarify the effects of autoPBSCT on prognosis in APL with MF.
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Affiliation(s)
- K Fukuno
- Department of Internal Medicine, Kisogawa Hospital, Aichi, Japan
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Oyama M, Ikeda T, Lim T, Ikebukuro K, Masuda Y, Karube I. Detection of toxic chemicals with high sensitivity by measuring the quantity of induced P450 mRNAs based on surface plasmon resonance. Biotechnol Bioeng 2001; 71:217-22. [PMID: 11291031 DOI: 10.1002/1097-0290(2000)71:3<217::aid-bit1011>3.0.co;2-w] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this study we describe a novel sensor system to detect toxic chemicals based on measurement of the quantity of Saccharomyces cerevisiae P450 mRNAs induced by them. Detection was conducted using a flow-injection-type sensor system based on surface plasmon resonance (SPR). The DNA and peptide nucleic acid (PNA) probes containing a complementary sequence to a part of P450 mRNA were immobilized on the sensor chip and the P450 mRNAs hybridized to the probes were quantified. We succeeded in detecting 10 ng/L (10 ppt) of atrazine using both DNA and PNA probes. Using this sensor system, we were able to detect bisphenol A in addition to atrazine. Furthermore, we achieved higher sensitivity by amplifying the target P450 mRNA based on nucleic acid sequence-based amplification (NASBA). This method allows for sensitive, rapid, and easy detection of some toxic chemicals.
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Affiliation(s)
- M Oyama
- Research Center for Advanced Science and Technology, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Ishida J, Wang HK, Oyama M, Cosentino ML, Hu CQ, Lee KH. Anti-AIDS agents. 46. Anti-HIV activity of harman, an anti-HIV principle from Symplocos setchuensis, and its derivatives. J Nat Prod 2001; 64:958-60. [PMID: 11473435 DOI: 10.1021/np0101189] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Matairesinol (1) and harman (5), identified from Symplocos setchuensis, were found to inhibit HIV replication in H9 lymphocyte cells. Anti-HIV evaluation of 28 derivatives of 5 revealed that compound 19 showed potent activity with EC(50) and therapeutic index values of 0.037 microM and 210, respectively.
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Affiliation(s)
- J Ishida
- Natural Products Laboratory, School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7360, USA
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Oyama M, Nitta A, Suzumura H, Arisaka O. [Neonatal hypoglycemia]. Ryoikibetsu Shokogun Shirizu 2001:522-4. [PMID: 11269153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- M Oyama
- Department of Pediatrics, Dokkyo University School of Medicine
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Arisaka O, Hoshi M, Kanazawa S, Nakajima D, Numata M, Nishikura K, Oyama M, Nitta A, Kuribayashi T, Kano K, Nakayama Y, Yamashiro Y. Systemic effects of transdermal testosterone for the treatment of microphallus in children. Pediatr Int 2001; 43:134-6. [PMID: 11285063 DOI: 10.1046/j.1442-200x.2001.01353.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To elucidate the metabolic effects of topical testosterone for the treatment of microphallus in children. METHODS We administered 5% testosterone ointment to 50 prepubertal boys for the treatment of microphallus, allowing us to observe its metabolic effect on plasma concentrations of testosterone as a marker of transdermally absorbed testosterone, insulin-like growth factor (IGF)-I as a marker of growth hormone secretion status, and osteocalcin as a marker of bone metabolic turnover. RESULTS Transdermal application of testosterone for 30 days at a dose that affects penile growth increased mean (+/-SD) plasma testosterone concentrations from 7.5+/-5.1 to 31.0+/-8.2 ng/dL (pre- vs. post-treatment, respectively; P<0.01). This was associated with a slight but statistically significant elevation of IGF-I concentrations (117.2+/-76.9 vs. 154.4+/-81.5 ng/mL; P<0.05). No significant change in osteocalcin levels was found. CONCLUSIONS When using testosterone ointment as a treatment for microphallus, it should be borne in mind that this application has systemic effects.
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Affiliation(s)
- O Arisaka
- Department of Pediatrics, Dokkyo University School of Medicine, Mibu, Japan
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Oyama M, Ohigashi T, Hoshi M, Murai M, Uyemura K, Yazaki T. Treatment of human renal cell carcinoma by a conditionally replicating herpes vector G207. J Urol 2001; 165:1274-8. [PMID: 11257700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
PURPOSE Surgical removal remains the only potentially curative therapy for renal cell carcinoma. In this study we evaluated the inhibitory effect of the replication competent engineered herpes simplex virus type 1, G207, for renal cell carcinoma in vitro and in vivo. MATERIALS AND METHODS The nature of G207 enables it to replicate within cancer cells, thus, causing cytolysis, but replication is restricted within normal cells. The susceptibility of the human renal cancer cell lines ACHN and A498 to G207 at a multiplicity of infection of 0.1 was examined. In addition, the growth characteristics of G207 was assessed. In vivo athymic mice bearing subcutaneous tumors were inoculated with 1 x 10(7) plaque forming units of G207 intra-neoplastically. For pathological analysis subcutaneous tumors were stained with X-gal. RESULTS Two cell lines were efficiently destroyed by G207 within 1 week. The viral yields of G207 increased in a time dependent manner. In vivo the intra-neoplastic inoculation of G207 caused significantly decreased tumor growth in athymic mice harboring subcutaneous human renal cancer cells. On day 14 the mean growth ratio of ACHN and A498 lesions was significantly inhibited in G207 treated compared to control tumors (p <0.005 and <0.0001, respectively). CONCLUSIONS These results suggest that G207 should be considered another potential therapeutic agent for renal cell carcinoma.
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Affiliation(s)
- M Oyama
- Department of Physiology, School of Medicine, Keio University, Tokyo, Japan
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Arisaka O, Negishi M, Numata M, Hoshi M, Kanazawa S, Oyama M, Nitta A, Suzumuara H, Kuribayashi T, Nakayama Y. Precocious puberty resulting from congenital hypothalamic hamartoma: persistent darkened areolae after birth as the hallmark of estrogen excess. Clin Pediatr (Phila) 2001; 40:163-7. [PMID: 11307963 DOI: 10.1177/000992280104000307] [Citation(s) in RCA: 3] [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: 11/17/2022]
Affiliation(s)
- O Arisaka
- Department of Pediatrics, Dokkyo University School of Medicine, Mibu, Tochigi, Japan
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Fukuno K, Tsurumi H, Yamada T, Oyama M, Moriwaki H. Graft Failure Due to Hemophagocytic Syndrome After Autologous Peripheral Blood Stem Cell Transplantation. Int J Hematol 2001; 73:262-5. [PMID: 11372742 DOI: 10.1007/bf02981948] [Citation(s) in RCA: 14] [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: 11/27/2022]
Abstract
Hemophagocytic syndrome (HPS) after hematopoietic stem cell transplantation can occasionally cause graft failure. We describe a female patient with B-cell non-Hodgkin's lymphoma (NHL) with graft failure due to HPS 12 days after autologous peripheral blood stem cell transplantation (PBSCT). Autologous PBSCT was carried out during unconfirmed/uncertain complete remission according to the Cotswolds classification after 6 cycles of biweekly (cyclophosphamide, doxorubicin, vincristine, and prednisolone) therapy and 3 courses of salvage chemotherapy including etoposide. The patient developed a high fever on day 2 post-PBSCT. Her white blood cell count rose to 0.9 x 10(9)/L on day 10 post-PBSCT, but then began to decrease. A bone marrow aspirate on day 12 post-PBSCT revealed an increase in the number of benign histiocytes with hemophagocytosis, and the patient was diagnosed with HPS. Although high-dose methylprednisolone therapy was continued, her white blood cell count further decreased to 0.3 x 10(9)/L, and the patient died of multiple organ failure on day 29 post-PBSCT. A computed tomography scan did not identify recurrent NHL, and necropsy specimens from the bone marrow, liver, and kidney revealed no neoplastic infiltration. Bone marrow necropsy showed marked hypocellularity with active histiocytic hemophagocytosis. HPS may have been induced by infection with methicillin-resistant Staphylococcus aureus rather than by lymphoma-associated HPS.
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Affiliation(s)
- K Fukuno
- Department of Internal Medicine, Kisogawa Hospital, Aichi, Japan
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Chiba C, Chiba J, Oyama M, Inoue K. Identification of the proto-oncogene c-fos in areas of periprosthetic osteolysis around loosened hip prostheses. Mod Rheumatol 2000. [DOI: 10.1007/s101650070007] [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: 10/27/2022]
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Oyama M, Ohigashi T, Hoshi M, Murai M, Uyemura K, Yazaki T. Oncolytic viral therapy for human prostate cancer by conditionally replicating herpes simplex virus 1 vector G207. Jpn J Cancer Res 2000; 91:1339-44. [PMID: 11123435 PMCID: PMC5926297 DOI: 10.1111/j.1349-7006.2000.tb00923.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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Over the last few years, a conditionally replicating herpes simplex virus 1 (HSV-1) vector, G207 has been used for the treatment of several malignant tumors. In this article we evaluate the anti-tumoral effect of G207 against prostate cancer in vitro and in vivo. The susceptibility of the human prostate cancer cell lines, DU145 and PC3 to G207 at a multiplicity of infection (MOI) of 0.1 was examined. In addition, the growth characteristics of G207 were assessed. Athymic mice with s.c. tumors were inoculated in vivo intraneoplastically with 1 x 10(7) plaque-forming units (PFU) of G207. For the pathological analyses, s.c. tumors were stained with X-gal. DU145 and PC3 were efficiently destroyed by G207 within 7 days. The viral yields of G207 increased time-dependently. In vivo, the intraneoplastic inoculation of G207 induced a significant inhibition of the tumor growth. The mean tumor growth ratio was significantly inhibited in the G207-treated tumors (DU145, P < 0.0001; PC3, P < 0.001 versus controls). In a pathological study, many lacZ-positive cells were diffusely present in the G207-treated tumors. G207 showed a significant antitumoral effect against human prostate cancer cell lines, and thus may be considered a useful agent for the treatment of prostate cancer.
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Affiliation(s)
- M Oyama
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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Chiba C, Chiba J, Oyama M, Inoue K. Identification of the proto-oncogene c-fos in areas of periprosthetic osteolysis around loosened hip prostheses. Mod Rheumatol 2000; 10:225-9. [PMID: 24383634 DOI: 10.3109/s101650070007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract Expression of the proto-oncogene c-fos was investigated by in situ hybridization and a study of the immunohistochemistry of the interfacial membranes surrounding the femoral component of failed cementless total hip arthroplasty (THA). The values of the proto-oncogene c-fos gene and protein were high in these interfacial membranes. High expression of the c-fos gene and protein was observed in the macrophage-like cells and fibroblast-like cells. However, there was little expression in multinucleated giant cells. We demonstrated the significance of the proto-oncogene c-fos in interfacial membranes - the first report of c-fos in total joint replacement failure.
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Affiliation(s)
- C Chiba
- Department of Orthopaedic Surgery, Daini Hospital, Tokyo Women's Medical University , 2-1-10 Nishiogu, Arakawa-ku, Tokyo 116-8567 , Japan
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Kuwayama H, Oyama M, Kubohara Y, Maeda M. A novel role of differentiation-inducing factor-1 in Dictyostelium development, assessed by the restoration of a developmental defect in a mutant lacking mitogen-activated protein kinase ERK2. Dev Growth Differ 2000; 42:531-8. [PMID: 11041494 DOI: 10.1046/j.1440-169x.2000.00537.x] [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: 11/20/2022]
Abstract
It has been previously reported that the differentiating wild-type cells of Dictyostelium discoideum secrete a diffusible factor or factors that are able to rescue the developmental defect in the mutant lacking extracellular signal-regulated kinase 2 (ERK2), encoded by the gene erkB. In the present study, it is demonstrated that differentiation-inducing factor-1 (DIF-1) for stalk cells can mimic the role of the factor(s) and the mechanism of the action of DIF-1 in the erkB null mutant is also discussed. The mutant usually never forms multicellular aggregates, because of its defect in cyclic adenosine monophosphate (cAMP) signaling. In the presence of 100 nM DIF-1, however, the mutant cells formed tiny slugs, which eventually developed into small fruiting bodies. In contrast, DIF-1 never rescued the developmental arrest of other Dictyostelium mutants lacking adenylyl cyclase A (ACA), cAMP receptors cAR1 and cAR3, heterotrimeric G-protein, the cytosolic regulator of ACA, or the catalytic subunit of cAMP-dependent protein kinase (PKA-C). Most importantly, it was found that DIF-1 did not affect the cellular cAMP level, but rather elevated the transcriptional level of pka during the development of erkB null cells. These results suggest that DIF-1 may rescue the developmental defect in erkB null cells via the increase in PKA activity, thus giving the first conclusive evidence that DIF-1 plays a crucial role in the early events of Dictyostelium development as well as in prestalk and stalk cell induction.
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Affiliation(s)
- H Kuwayama
- Department of Biology, Osaka University, Toyonaka, Japan
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Wakamatsu C, Takakura F, Kojima E, Kiriyama Y, Goto N, Matsumoto K, Oyama M, Sato H, Okochi K, Maeda Y. Screening of blood donors for human parvovirus B19 and characterization of the results. Vox Sang 2000; 76:14-21. [PMID: 9933849 DOI: 10.1159/000031014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVES Human parvovirus B19 (B19 virus) can be transmitted through blood transfusion and plasma-derived products. In a previous report, we utilized the simple hemagglutination method based on the interaction between the B19 virus and P antigen on human erythrocytes in order to screen the blood donors. We called this method receptor-mediated hemagglutination (RHA) [Lancet 1995;346:1237-1238]. In this paper, we report on a large-scale screening of the B19 virus by RHA and discuss the results. MATERIALS AND METHODS Donor sera from September 1995 to March 1997 and seroconversion panels were enrolled. Donor sera were examined by RHA for large-scale screening. The positive sera in the first screening were then further investigated by the RHA inhibition test, countercurrent immunoelectrophoresis (CIE), an enzyme-linked immunosorbent assay, and polymerase chain reaction (PCR). We also evaluated the infectivity and neutralizing activity of various kinds of sera by the erythroid colony forming unit (CFU-e) assay. To examine the detection limits of the B19 virus by RHA, B19-viremic sera were purified by sucrose gradient ultracentrifugation. RESULTS Among 257,710 sera specimens, 293 sera (0.11%) gave a positive reaction in the first screening using RHA. Out of these 293 sera specimens, 31 were positive for PCR, of which 28 were also RHA inhibition-positive, and 25 of the 28 CIE-positive. In the CFU-e injury assay, all the RHA inhibition (+) sera showed a decrease in the number of erythroid colonies. The RHA inhibition (-) PCR (+) B19 antibody (+) sera did not affect the erythroid colony formation and protected CFU-e from injury by the B19 virus. By measuring the amount of purified B19 protein and its RHA titer, the detection limit of the B19 virus by RHA was calculated to the 0.37+/-0.03 ng/ml. CONCLUSION These results suggest that the RHA(+) RHA inhibition (+) sera were infectious in vitro. The combination of RHA and the RHA inhibition test is considered to be useful for the large-scale screening of infectious B19 virus in blood donors with high specificity.
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Affiliation(s)
- C Wakamatsu
- Fukuoka Red Cross Blood Center, Fukuoka, Japan
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Oyama M, Ohigashi T, Hoshi M, Nakashima J, Tachibana M, Murai M, Uyemura K, Yazaki T. Intravesical and intravenous therapy of human bladder cancer by the herpes vector G207. Hum Gene Ther 2000; 11:1683-93. [PMID: 10954902 DOI: 10.1089/10430340050111331] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
G207, a conditionally replicating herpes vector, efficiently kills human bladder cancer cells in vitro. To evaluate the therapeutic potential of G207, we have established three in vivo models similar to the clinical situation. In vivo, G207 was intraneoplastically, intravesically, or intravenously inoculated in nude mice. Intraneoplastic inoculation into subcutaneous tumor caused significant tumor growth inhibition. Intravesical inoculation of G207 also caused decreased tumor growth in an orthotopic human bladder cancer model. Furthermore, multiple intravenous inoculation markedly inhibited subcutaneous tumor growth. These results suggest that intravesical therapy with G207 is effective for localized bladder tumor, especially for carcinoma in situ (CIS), and intravenous therapy with G207 is promising for invasive or metastasized bladder tumor.
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Affiliation(s)
- M Oyama
- Department of Physiology and Department of Urology, School of Medicine, Keio University, Tokyo, Japan
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Abstract
We describe a novel method for quantification of atrazine based on detection of P450 mRNA levels in Saccharomyces cerevisiae. The selected oligonucleotide probe exhibited specificity against P450 mRNA and was successfully immobilized on the sensor chip. The mRNA was subsequently quantified by RU change using a SPR system. When the cells were disrupted by boiling, mRNA could be measured without further purification at reduced sensitivity. This simple technique permits the detection of atrazine within 15 min. This rapid and highly sensitive method can be used for the detection of atrazine.
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Affiliation(s)
- T Lim
- Research Center for Advanced Science and Technology, The University of Tokyo, Japan
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