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Spots Global Cancer Trial Database for Role of Insulin Action and Free Fatty Acids in Hyperandrogenism of Women With Polycystic Ovary Syndrome

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Trial Identification

Brief Title: Role of Insulin Action and Free Fatty Acids in Hyperandrogenism of Women With Polycystic Ovary Syndrome

Official Title: Role of Insulin Action and Free Fatty Acids in Hyperandrogenism and Role of Metabolism of Inositols in Insulin Resistance of Women With Polycystic Ovary Syndrome

Study ID: NCT01019356

Study Description

Brief Summary: The investigators hypothesis is that free fatty acids (FFA) accumulation in non fatty tissues would lead to insulin resistance and hyperandrogenism in PCOS women. Accordingly, Peroxisome Proliferator-Activated Receptor gamma (PPARγ) agonist (rosiglitazone) would be a great therapeutic option for PCOS as their activation induces transcription factors of gene implicated in fatty acids metabolism. The aim is to verify if insulin-related hyperandrogenism can be reversed in women having polycystic ovary syndrome following an 8-week treatment with rosiglitazone compared to simple insulin reduction with acarbose. For the purpose of this study, 14 lean women (BMI ≤ 25 kg/m2) and 36 obese women (BMI 30-39 kg/m2) with PCOS as well as 14 lean and 14 obese control women will be recruited to determine their insulin sensibility (insulin levels, M-value, metabolic clearance rate of glucose)and FFA metabolism (FFA levels, rythm of apparition and disapearance of FFA) during a 75g oral glucose tolerance test and a 2-step insulin-glucose clamp.

Detailed Description: Polycystic ovary syndrome (PCOS) is a very common but complex endocrine disorder affecting 6 to 10% of childbearing age women. To diagnose PCOS, women must display two of these three symptoms: clinical or biochemical hyperandrogenism, oligoamenorrhea, and/or echographycally confirmed polycystic ovary. Many studies have also demonstrated that PCOS women are more insulin resistant than control women when matched for body mass index (BMI). Thus, insulin resistance (IR) and secondary hyperinsulinemia would be important premises in the development of PCOS. In fact, the prevalence of type 2 diabetes (T2D) is tripled in PCOS women. Higher free fatty acid (FFA) concentrations were also observed in the circulation of PCOS women. As FFA accumulates in liver and muscle instead of fat cells, this could be an important cause of IR according to the theory of lipotoxicity. Some indirect evidences are suggesting that FFA accumulation in androgen secreting cells (ovary and adrenal gland) could enhance their androgen production. Based on these findings, our hypothesis is that FFA accumulation in non fatty tissues would lead to IR and hyperandrogenism in PCOS women. Accordingly, Peroxisome Proliferator-Activated Receptor gamma (PPARγ) agonist (rosiglitazone) would be a great therapeutic option for PCOS as their activation induces transcription factors of gene implicated in fatty acids metabolism. The aim is to verify if insulin-related hyperandrogenism can be reversed in PCOS women following an 8-week treatment with rosiglitazone compared to simple insulin reduction with acarbose. For the purpose of this study, 14 lean women (BMI ≤ 25 kg/m2) and 36 obese women (BMI 30-39 kg/m2) with PCOS as well as 14 lean and 14 obese control women will be recruited to determine their insulin sensibility (insulin levels, M-value, metabolic clearance rate of glucose)and FFA metabolism (FFA levels, rythm of apparition and disapearance of FFA) during a 75g oral glucose tolerance test and a 2-step insulin-glucose clamp.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT

Sex: FEMALE

Healthy Volunteers: Yes

Locations

Université de Sherbrooke, Sherbrooke, Quebec, Canada

Contact Details

Name: Jean-Patrice Baillargeon, MD, MSc

Affiliation: Université de Sherbrooke

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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