OBJECTIVE: To evaluate the effects of a commonly used combined hormonal oral contraceptive (OC) on carbohydrate metabolism in obese as compared with lean women. DESIGN: 6-month prospective study. SETTING: Clinical research center at an academic medical center. PATIENT(S): Premenopausal nondiabetic women with body mass index <25 kg/m(2) (n = 15) or >30 kg/m(2) (n = 14). INTERVENTION(S): Ethinyl estradiol (35 μg) and norgestimate (0.18/0.215/0.25 mg) for 6 cycles. MAIN OUTCOME MEASURE(S): Insulin sensitivity by frequent sampling intravenous glucose tolerance test; other indices of insulin sensitivity (homeostatic model assessment of insulin sensitivity index [ISI HOMA], the Matsuda index); fasting lipid panel. RESULT(S): Insulin sensitivity changed from 6.62 ± 3.69 min(-1)/mIU/L (baseline) to 8.23 ± 3.30 min(-1)/mIU/L (6 months) in lean women, and from 4.36 ± 2.32 to 3.82 ± 2.32 min(-1)/mIU/L in obese women. Divergent effects on insulin sensitivity were also observed with ISI HOMA and the Matsuda index. Low-density lipoprotein increased by approximately 20 mg/dL in both the lean and obese groups. CONCLUSION(S): Lean and obese women exhibit differential changes in insulin sensitivity when given 6 months of a commonly used oral contraceptive. The mechanisms of these differences and whether these divergent effects persist in the long term require further investigation.
OBJECTIVE: To evaluate the effects of a commonly used combined hormonal oral contraceptive (OC) on carbohydrate metabolism in obese as compared with lean women. DESIGN: 6-month prospective study. SETTING: Clinical research center at an academic medical center. PATIENT(S): Premenopausal nondiabetic women with body mass index <25 kg/m(2) (n = 15) or >30 kg/m(2) (n = 14). INTERVENTION(S): Ethinyl estradiol (35 μg) and norgestimate (0.18/0.215/0.25 mg) for 6 cycles. MAIN OUTCOME MEASURE(S): Insulin sensitivity by frequent sampling intravenous glucose tolerance test; other indices of insulin sensitivity (homeostatic model assessment of insulin sensitivity index [ISI HOMA], the Matsuda index); fasting lipid panel. RESULT(S): Insulin sensitivity changed from 6.62 ± 3.69 min(-1)/mIU/L (baseline) to 8.23 ± 3.30 min(-1)/mIU/L (6 months) in lean women, and from 4.36 ± 2.32 to 3.82 ± 2.32 min(-1)/mIU/L in obesewomen. Divergent effects on insulin sensitivity were also observed with ISI HOMA and the Matsuda index. Low-density lipoprotein increased by approximately 20 mg/dL in both the lean and obese groups. CONCLUSION(S): Lean and obesewomen exhibit differential changes in insulin sensitivity when given 6 months of a commonly used oral contraceptive. The mechanisms of these differences and whether these divergent effects persist in the long term require further investigation.
Authors: Olga R Grigoryan; Elena E Grodnitskaya; Elena N Andreeva; Marina V Shestakova; Galina A Melnichenko; Ivan I Dedov Journal: Gynecol Endocrinol Date: 2006-04 Impact factor: 2.260
Authors: L C Morin-Papunen; I Vauhkonen; R M Koivunen; A Ruokonen; H K Martikainen; J S Tapanainen Journal: J Clin Endocrinol Metab Date: 2000-09 Impact factor: 5.958
Authors: Manuel Luque-Ramírez; Francisco Alvarez-Blasco; José I Botella-Carretero; Elena Martínez-Bermejo; Miguel A Lasunción; Héctor F Escobar-Morreale Journal: J Clin Endocrinol Metab Date: 2007-04-10 Impact factor: 5.958