Abstract
In spite of variety studies in understanding of human reproductive and fertility, the underlying causes of male infertility remains undefined in about 50 % of cases. The polymorphism studies have a crucial role in diseases recognizing. Human apurinic/apyrimidinic endonuclease 1 (ApE1) is a multifunctional protein that has an important role in the base excision repair pathway. The present study was aimed to evaluate whether two polymorphisms -656T>G and 1349T>G ApE1 are related with the susceptibility to idiopathic male infertility. Samples were collected from 180 patients diagnosed with idiopathic male infertility and 120 control subjects and genotyped by tetra-primer amplification refractory mutation system PCR. We observed a significant difference in genotype distributions of -656T>G ApE1 polymorphism between infertile patients and controls (P = 0.0001). Our findings indicated individuals with the variant TG genotypes had a significant increased risk of idiopathic male infertility (OR 1.84, 95 % CI 1.09-3.11, P = 0.021), whereas the significant association between the 1349T>G polymorphism and idiopathic male infertility risk was not observed (P = 0.2). Our data suggest that the -656T>G ApE1 polymorphism may be associated with increased risk of idiopathic male infertility. Larger studies with more patients and controls are needed to confirm the results.
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