Abstract:Objective To investigate the relationship between the polymorphisms of endothelial nitric oxide syntheses (eNOS) gene G894T and senile calcific valve disease (SCVD). Methods Gene chip technique was used to detect eNOS G894T polymorphisms in 132 patients with echocardiography-identified valve degenerative changes but without rheumatic, congenital, or infectious valve diseases in our department from 2010 to 2011. Their age was ranging from 65 to 92 years (mean 79.2±6.3). Another 108 sex- and age-matched patients without valve degenerative changes or valve disease served as control. The genotype and allele frequency distribution were compared between the 2 groups. Binary logistic regression analysis was used to evaluate the relationship between eNOS G894T polymorphisms and SCVD. Results SCVD group had GT+TT genotypes and T allele frequency significantly higher than the control group (genotypes c2=8.486, P=0.004; allele c2=9.425, P=0.002). In Binary logistic regression analysis, eNOS G894T polymorphisms, levels of total cholesterol, low density lipoprotein and fasting glucose, body mass index, systolic blood pressure, and histories of hypertension, coronary heart disease and hyperlipidemia were all statistically associated with SCVD (P<0.05). Conclusion eNOS G894T may be the predisposing gene of SCVD.