In this study, the polycystic ovary syndrome (PCOS) mice model was randomly divided into 6 groups: blank control group, Clomiphene group, PCOS group, and Yulin mixture high-/medium-/low-dose group. Rats were killed after 5 weeks of administration. The expression levels of serum E2,T,Insulin and LH were detected by ELISA. The localizations and quantities of Steroid-generating factor-1 (SF-1) and Cytochrome protein P450 a1 (Cyp19a1) were detected by immunohistochemistry and western blot. The quantities of miR-320 were detected by RT-PCR. The results showed that the mechanism of Yulin mixture inhibiting the growth of polycystic ovary on mouse PCOS model may be through the decreasing of serum T and LH levels and then reducing local estrogen content to make the polycystic ovary atrophy. Yulin mixture can decrease the level of miR-320 and increase the expression of SF-1 and Cyp19a1 in ovary, thereby regulating the ovarian granulosa cell proliferation and apoptosis.
Keywords: Steroid-generating factor-1 (SF-1); Yulin mixture; cytochrome protein P450 a1 (Cyp19a1); miR-320; polycystic ovary syndrome (PCOS).