| Abstract: | Objective: To investigate the correlation between the insulin gene variable number tandem repeats (INS-VN-TR) with polycystic ovary syndrome(PCOS) and metabolic features related to insulin resistance (IR).Methods: One hundred and thirty patients with PCOS (PCOS group) and 130 normal women (control group) were included. Genotyping of INS-VNTR was performed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).Results: The distribution of genotype of INS-VNTR was similar in PCOS group, but the Ⅲ allele frequency of INS-VNTR was higher in PCOS patients than that in controls, and Logistic regression analysis revealed that the Ⅲ allele was associated with increased risk of PCOSadjusted odd ratio(OR) = 2.31;95% confidence interval(CD =1.07-4.98), compared with the Ⅰ allele. The distribution of genotype and the Ⅲ allele frequency of INS-VNTR in PCOS insulin resistance (PCOS-IR) group were significantly higher than that in PCOS non-insulin resistance group (PCOS-NIR). Moreover, PCOS women with Ⅲ allele had statistically significantly higher fasting insulin level and HOMA-IR than those of PCOS women with Ⅰ allele.Conclusion: INS-VNTR may not be a susceptibility gene, but INS-VNTR polymorphism may play an important role in the occurrence of insulin resistance in patients with PCOS. |
