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  • Title: [Role of hyperinsulinemia in pathogenesis of polycystic ovary syndrome and treatment by reduction of insulin secretion].
    Author: Wang A, Li M, Lu C.
    Journal: Zhonghua Fu Chan Ke Za Zhi; 1998 Dec; 33(12):731-4. PubMed ID: 10806662.
    Abstract:
    OBJECTIVE: To investigate the role of insulin in the polycystic ovary syndrome (PCOS) pathogenesis and application of Metformin in the treatment of PCOS. METHODS: Serum androgen, luteinizing hormone (LH) and sex hormone-binding globulin(SHBG) concentration during fasting and serum 17 alpha-hydroxyprogesterone (17-OHP), LH level in response to gonadotropin-releasing hormone agonist (GnRH-a) stimulation were determined. Oral glucose-tolerance tests(OGTT) before and after oral administration of metoformin for 8-12 weeks were performed in 12 obese and 11 lean women with PCOS. RESULTS: After oral administration of metformin for 8-12 weeks, fasting insulin concentration in obese group and area under curve (AUC) after OGTT in lean group decreased significantly. There were significant decrease in basal 17 alpha-hydroprogesterone, androstenedione, testosterone concentration, and increase in serum SHBG concentration in obese and lean groups. Basal LH and the response of serum 17-OHP, LH to GnRHa were not significantly changed. CONCLUSIONS: Hyperinsulinemia may play an important role in hyperandrogenism GnRH-a of PCOS, and metformin may be used in the treatment of PCOS.
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