Published on:
    Journal of Cardiovascular Disease Research, 2012; 3(2):84-90
    ORIGINAL ARTICLE | doi:10.4103/0975-3583.95359

    Tumor necrosis factor-alpha G-308 A polymorphism and risk of coronary heart disease and myocardial infarction: A case-control study and meta-analysis

    Authors:

    Hongxia Chu1,2,#, Jun Yang2,#, Shaohua Mi2, Soumitra Sudip Bhuyan3, Jun Li2, Lin Zhong2, Shaorong Liu2, Zhigang Tao2, Jianping Li2, Hongying Chen2

    1Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China,

    2Department of Cardiology, Yuhuangding Hospital of Yantai, Yantai 264000, China,

    3University of Nebraska Medical Center, Omaha, NE 68198, U.S.A. #Both are equally contributing authors.

    Abstract:

    Objectives: The tumor necrosis factor-alpha (TNF-α) gene may play an important role in coronary heart disease (CHD) and myocardial infarction (MI) risk. Recently, controversial results regarding the association of the G-308 A (rs1800629)polymorphism of the TNF-α gene with CHD/MI have been reported. We herein examine a possible association between the G-308 A (rs1800629)polymorphism of the TNF-α gene and CHD/MI in a sample of the Chinese Han population. Materials and Methods: We determined the genotypes of TNF-α G-308 A (rs1800629) in 535 unrelated Chinese patients with CHD, 420 patients with MI, and 1020 coronary artery disease-free controls. Additionally, a meta-analysis of all previous studies on the TNF-α G-308 A polymorphism and the risk of CHD and MI was performed. Results: AA genotypes in the G-308 A (rs1800629)polymorphism of the TNF-α gene did not occur more frequently in CHD/MI patients than in controls; odds ratios (95% confidence intervals) were 1.743 (0.325 to 1.423) for CHD and 1.731 (0.442 to 1.526) for MI, after adjusting for conventional risk factors. Further stratification for age, gender, and other cardiovascular risk factors did not alter the prior negative findings. Pooled meta-analysis of 23 studies also found no statistically significant associations between the TNF-α polymorphism and CHD/MI risk in the genetic additive, dominant, and recessive models. Subgroup analyses showed no association between the TNF-α polymorphism and CHD/MI in Asian and Caucasian populations. Conclusion: Our study showed no association between the G-308 A (rs1800629) polymorphism of the TNF-α gene (presence of A allele) and CHD/MI in the Chinese Han population. There was no evidence of a difference in risk effects of rs1800629 between Caucasians and Asians.

    Key words:Coronary heart disease, meta-analysis, myocardial infarction, polymorphism, tumor necrosis factor-alpha.