Abstract
BackgroundChronic obstructive pulmonary disease (COPD) is the result of interaction between genetic and environmental factors. In this study, we aimed to explore whether MIR2113 and MIR129-LEP polymorphisms confer susceptibility to COPD. MethodsWe selected five polymorphisms of two genes (MIR2113: rs2505059 and rs9320913; MIR129-LEP: rs7778167, rs791595 and rs4731420) based on previous studies and genotyped 629 samples, which included 315 COPD patients and 314 controls with Agena MassARRAY platform. The association of MIR2113 and MIR129-LEP polymorphisms with COPD risk was conducted with logistic regression by calculating odd ratios (OR) and 95% confidence intervals (CI). ResultsMIR2113 rs2505059 was remarkably linked with a decreased susceptibility of COPD in five genetic models, whereas MIR2113 rs9320913, MIR129-LEP rs791595 and MIR129-LEP rs4731420 could enhance the susceptibility of COPD in the Chinese Han population (P < 0.05). Stratified analysis revealed that the influences of genetic variants on COPD risk were dependent on age, sex, Body mass index or smoking status (P < 0.05). Haplotype analysis showed that Ars791595Crs4731420 haplotype significant increased the susceptibility of COPD. ConclusionIt suggested that polymorphisms of MIR2113 and MIR129-LEP might be linked with the susceptibility of COPD among the Chinese Han population.
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