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  • Title: Prevalence of the insulin receptor substrate-1(IRS-1) Gly972Arg and the insulin receptor substrate-2(IRS-2) Gly1057Asp polymorphisms in PCOS patients and non-diabetic healthy women.
    Author: Rashidi B, Azizy L, Najmeddin F, Azizi E.
    Journal: J Assist Reprod Genet; 2012 Feb; 29(2):195-201. PubMed ID: 22205343.
    Abstract:
    OBJECTIVE: The aim of our study was to investigate the frequency and compare the prevalence of IRS-1Gly972Arg and IRS-2 Gly1057Asp polymorphisms in PCOS patients and non-diabetic healthy women. MATERIAL(S) AND METHOD(S): Forty eight Iranian women diagnosed with PCOS were enrolled in this study. Fifty two non-diabetics, non-PCOS women were enrolled as the control group. HemoglobinA1c (HbA1c), fasting blood glucose (FBS), fasting insulin levels (FIL) and 2 h post-prandial blood glucose(2hpp BS) were evaluated from blood samples. Insulin resistance sample was estimated with Homeostasis Model Assessment index for insulin resistance (HOMA-IR). Genotyping of allelic variants Gly972Arg of IRS-1 and Gly1057Asp of IRS-2 was conducted using PCR. RESULTS: No statistically significant differences in the prevalence of IRS-1 Gly972Arg or IRS-2 Gly1057Asp polymorphisms or any combination of both were observed between controls and PCOS patients (P > 0.02). Control subjects with the IRS-1 polymorphism had higher levels of 2hpp BS compared with those with the Gly/Gly genotype (P = 0.037). CONCLUSIONS: Considering that no association between the IRS-1 Gly972Arg and IRS-2 Gly1057Asp polymorphisms and PCOS were found, the results confirm that these polymorphisms should not be considered as major contributors to the pathogenesis of this disorder.
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