Objective: To investigate the distribution of CD14 promoter gene -159(C>T) polymorphism in Hubei Han population of China and analyze the association of CD14 polymorphisms with coronary heart disease (CHD).
Methods: Genotypes of CD14 were typed in 162 CHD patients and 196 controls by polymerase chain reaction-restriction fragment length polymorphism. Selected coronary angiography was performed in 162 CHD patients.
Results: CD14 promoter -159 genotype frequencies of CC, CT and TT were 27.4%, 45.6%, 27.0% and 14.8%, 46.5%, 38.7% in normal control group and CHD group respectively. Genotype distribution was in accordance with Hardy-Weinberg equilibrium. There existed statistically significant difference in frequencies of allele and genotype in CD14 C-159T polymorphism between CHD group and control group (Genotype: Chi2=0.654, P < 0.05, CT vs CC, OR=1.245, 95%CI: 1.001-1.473, TT vs CC, OR=2.374, 95%CI 2.012-2.649; Allele: Chi2=0.547, P < 0.05, T vs C, Chi2=0.547, P < 0.05, OR=3.105, 95%CI: 2.493-3.539). The distributions of allele and genotype in CD14 -159(C>T) were of statistically significant difference between non-myocardial infarction subgroup and myocardial infarction subgroup (Genotype: Chi2=0.782, P < 0.05, CT vs CC, OR=2.375, 95%CI: 2.017-2.689, TT vs CC, OR=3.459, 95%CI: 3.003-3.846. Allele: Chi2=2.374, P < 0.05, T vs C, Chi2=2.374, P < 0.05, OR=4.011, 95%CI: 3.814-4.279). However, no statistically significant difference was found among the subgroups of oneìtwo and three stenosed vessels.
Conclusion: The T allele of the C-159T polymorphism of CD14 gene may be a risk factor for myocardial infarction.