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논문 기본 정보

자료유형
학술저널
저자정보
Kim, An-Na (Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University) Ahn, Ryun-Seop (Graduate School, Pochon CHA University) Kwon, Hyuk-Bang (Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University)
저널정보
한국통합생물학회 Integrative biosciences Integrative biosciences 제10권 제4호
발행연도
2006.1
수록면
203 - 209 (7page)

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Azoles are widely used antifungal agents, which inhibit the biosynthesis of fungal cell-membrane ergosterol. In this study, using an amphibian follicle culture system, the effects of azoles on follicular steroidogenesis in frogs were examined. Itraconazole (ICZ), clotrimazole (CTZ) and ketoconazole (KCZ) suppressed pregnenolone ($P_5$) production by the follicles ($ED_{50};\;0.04_{\mu}M,\;0.33_{\mu} M,\;and\;0.91_{\mu}M$, respectively) in response to frog pituitary homogenates (FPH). However, fluconazole (FCZ), miconazole (MCZ) and econazole (ECZ) were not effective in the suppression of $P_5$ production. Not all the azoles examined suppressed the conversion of exogenous $P_5$ to progesterone ($P_4$) (by $3{\beta}$- HSD) or $P_4$ to $17{\alpha}$-hydroxyprogesterone ($17{\alpha}$-OHP) (by $17{\alpha}$-hydroxylase), or androstenedione (AD) to testosterone (T) (by $17{\beta}$-HSD). In contrast, CTZ, MCZ and ECZ in medium partially suppressed the conversion of $17{\alpha}$-OHP to AD (by C17-20 lyase) ($ED_{50};\;0.25{\mu} M,\;4.5{\mu}M,\;and\;0.7{mu}M$, respectively) and CTZ, KCZ, ECZ and MCZ strongly suppressed the conversion of exogenous T to estradiol ($E_2$) (by aromatase) ($ED_{50};\;0.02{\mu}M,\;8{\mu}M,\;0.07{\mu}M,\;0.8{\mu}M$, respectively). These results demonstrated that some azole agents strongly suppress amphibian follicular steroidogenesis and particularly, P450scc and aromatase are more sensitive to azoles than other steroidogenic enzymes.

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