Fertility and sterility · 1999
Effect of troglitazone on endocrine and ovulatory performance in women with insulin resistance-related polycystic ovary syndrome.
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Hasegawa I, Murakawa H, Suzuki M, Yamamoto Y, Kurabayashi T, Tanaka K
Аннотация
OBJECTIVE: To investigate the effect of troglitazone, a new antidiabetic agent that improves insulin resistance, on endocrine, metabolic, and ovulatory performance in women with insulin resistance-related polycystic ovary syndrome (PCOS).
DESIGN: Prospective clinical study.
SETTING: Infertility outpatient clinic, Niigata University Hospital, Niigata, Japan.
PATIENT(S): Thirteen women with PCOS and insulin resistance.
INTERVENTION(S): Troglitazone (400 mg/d) was administered for 12 weeks.
MAIN OUTCOME MEASURE(S): Insulin and other hormone (gonadotropins, androgens) levels; various parameters relating to glucose and lipid metabolism before, during, and after troglitazone administration; and ovulation rate.
RESULT(S): The mean (+/-SD) fasting insulin concentration was significantly reduced, from 18.3+/-8.9 to 10.5+/-7.1 microU/mL. The LH level was reduced from 9.7+/-3.4 to 4.8+/-3.9 mIU/mL and the testosterone level was reduced from 0.9+/-0.5 to 0.5+/-0.3 ng/mL in accordance. Atherosclerotic lipid levels also were normalized. Before troglitazone administration, the ovulation rate during clomiphene citrate therapy was 34.9% per cycle (15/43). This increased significantly to 72.7% (8/11) during troglitazone coadministration. Further, an ovulation rate of 42.3% (11/26) was achieved with troglitazone alone.
CONCLUSION(S): In women with PCOS and insulin resistance, the reduction of hyperinsulinemia that is produced by troglitazone improves the hyperandrogenism that characterizes PCOS, restoring ovulation.
DESIGN: Prospective clinical study.
SETTING: Infertility outpatient clinic, Niigata University Hospital, Niigata, Japan.
PATIENT(S): Thirteen women with PCOS and insulin resistance.
INTERVENTION(S): Troglitazone (400 mg/d) was administered for 12 weeks.
MAIN OUTCOME MEASURE(S): Insulin and other hormone (gonadotropins, androgens) levels; various parameters relating to glucose and lipid metabolism before, during, and after troglitazone administration; and ovulation rate.
RESULT(S): The mean (+/-SD) fasting insulin concentration was significantly reduced, from 18.3+/-8.9 to 10.5+/-7.1 microU/mL. The LH level was reduced from 9.7+/-3.4 to 4.8+/-3.9 mIU/mL and the testosterone level was reduced from 0.9+/-0.5 to 0.5+/-0.3 ng/mL in accordance. Atherosclerotic lipid levels also were normalized. Before troglitazone administration, the ovulation rate during clomiphene citrate therapy was 34.9% per cycle (15/43). This increased significantly to 72.7% (8/11) during troglitazone coadministration. Further, an ovulation rate of 42.3% (11/26) was achieved with troglitazone alone.
CONCLUSION(S): In women with PCOS and insulin resistance, the reduction of hyperinsulinemia that is produced by troglitazone improves the hyperandrogenism that characterizes PCOS, restoring ovulation.