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Brief Title: Meal Timing on Glucose Metabolism and Hyperandrogenism in Lean Women With Polycystic Ovary Syndrome
Official Title: Influence of Meal Timing on Glucose Metabolism and Hyperandrogenism in Lean Women With Polycystic Ovary Syndrome
Study ID: NCT01569425
Brief Summary: In obese women with polycystic ovary syndrome (PCOS), weight loss improves insulin resistance and hyperandrogenism, resulting in improvement of clinical symptoms. Weight loss is not required in lean PCOS patients; nevertheless, the influence of meal timing and composition on glucose metabolism and hyperandrogenism may have clinical value. In this study the investigators investigate the effects of two isocaloric diets with different meal timing distribution on insulin resistance and hyperandrogenism in lean PCOS patients.
Detailed Description: Insulin resistance and hyperinsulinemia plays a pivotal role in the pathogenesis of polycystic ovary syndrome (PCOS). Hyperinsulinemia stimulates ovarian cytochrome P450c17 alpha activity, in obese and nonobese women with PCOS, thereby increasing serum levels of 17-alpha-hydroxyprogesterone, androgens concentrations, decreasing SHBG and promoting the clinical features of hyperandrogenism. In women with PCOS, weight loss improves insulin resistance and hyperandrogenism, resulting in improvement of clinical symptoms. Since lean women with PCOS do not have the option of weight loss, it is important to know weather diet composition and meal timing distribution may influence glucose metabolism and hyperandrogenism. We hypothesized that a timing pattern of increased nutrient intake of protein and carbohydrates in the morning, with decreased caloric intake at night would improve insulin sensitivity and hyperandrogenism in lean women with PCOS. Objective:The objective of this study is to investigate the effects of two isocaloric diets with different meal timing distribution on insulin resistance and hyperandrogenism in lean PCOS women.
Minimum Age: 18 Years
Eligible Ages: ADULT
Sex: FEMALE
Healthy Volunteers: No
Daniela Jakubowicz, Holon, Tel Aviv, Israel
Name: Daniela Jakubowicz, MD
Affiliation: Diabetes Unit E. Wolfson Medical Center Tel Aviv University
Role: PRINCIPAL_INVESTIGATOR
Name: Mona Boaz, PhD
Affiliation: E. Wolfson Medical Center Tel Aviv University
Role: STUDY_DIRECTOR
Name: Julio Wainstein, MD
Affiliation: E. Wolfson Medical Center
Role: STUDY_CHAIR