Immunohistochemical Localization and Physiological Regulation of Carbonyl Reductase in Immature Rat Ovary
スポンサーリンク
概要
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The present study was performed to clarify the role of the ovarian carbonyl reductase (OCR) in ovarian function in immature rats. The OCR activities towards three specific substrates, 13, 14-dihydro-PGF<SUB>2α</SUB>, 4-benzoylpyridine and menadione, were photometrically and radiochemically determined in the 9, 000×g supernatants of ovaries, and OCR content was measured by Western-blot-peroxidase anti-peroxidase (PAP) analysis. Immunohistochemical localization of the enzyme in the ovary was performed by the avid in-biotin-complex (ABC) method for paraffin sections. Positive immunoreactivity with OCR antibody was observed for the theca cells and interstitial gland cells at 72 hr after pregnant mare serum gonadotropin (PMSG) treatment when ovulation was confirmed, and the granulosa cells were consistently negatively stained. The OCR activity was significantly increased by PMSG, human chorionic gonadotropin (hCG) and PMSG-hCG treatments, but estradiol and tamoxifen overcame the effect of PMSG on the enzyme activity.
著者
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INABA NIRO
Department of Pharmacology and Toxicology, Tokyo College of Pharmacy
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Inazu Norihisa
Department Of Pharmacology And Toxicology Tokyo College Of Pharmacy
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SATOH Tetsuo
Laboratory of Biochemical Pharmacology and Biotoxicology
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