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Ethinylestradiol/cyproterone acetate in polycystic ovary syndrome: lipid and carbohydrate changes.

Author(s): Villaseca P, Hormaza P, Cardenas I, Oestreicher E, Arteaga E

Affiliation(s): Department of Endocrinology, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.

Publication date & source: 2004-09, Eur J Contracept Reprod Health Care., 9(3):155-65.

Publication type: Clinical Trial; Randomized Controlled Trial

OBJECTIVE: Ethinylestradiol (EE) combined with the antiandrogenic progestin cyproterone acetate (CPA) is a possible treatment in polycystic ovary syndrome (PCOS). We investigated the impact of EE/CPA on lipid and carbohydrate metabolism in women with PCOS,who were otherwise healthy. METHOD: The 31 women were separated into two groups paired by body mass index (BMI): Group A (control, n = 15) were cycled with 10 mg medroxyprogesterone acetate (MPA) x 10 days (Provera, Pharmacia & Upjohn) every month for 3 months; Group B (n = 16) were treated with 35 microg EE/2 mg CPA (Diane 35, Schering) for 3 months. Metabolic and hormonal conditions were similar in both groups. RESULTS: Group A showed no change in any hormone or metabolic parameter. Group B showed a significant decrease in free androgen index (-81%) and increase in sex hormone binding globulin (+ 639%), a decrease in low density lipoprotein cholesterol (-14%) and total cholesterol/high density lipoprotein (HDL) cholesterol index (-19%), and increases in HDL cholesterol (+ 23%) and triglycerides (+ 82%) (p < 0.001). Fasting insulin increased in 18%, the glucose/insulin index worsened in 8%, and the plasma glucose disappearance worsened in 12%, with no statistical significance (p= 0.092, p=0.308 and p= 0.237, respectively). CONCLUSION: Treatment of PCOS with EE/CPA induces important favorable changes regarding hormone parameters associated with hyperandrogenism, significant favorable changes in lipid profile except for triglyceride increase, and no significant change in carbohydrate metabolism (measured by fasting insulin, glucose/insulin index and plasma glucose disappearance). MPA cycling does not change any of these parameters.

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