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- W2026571535 abstract "Many epidemiological studies have explored the relationships between three genetic polymorphisms of genes encoding homocysteine-metabolizing enzymes (methionine synthase [MTR] A2756G, methionine synthase reductase [MTRR] A66G, and N5,N10-methylenetetrahydrofolate reductase [MTHFR] A1298C) and risk of coronary heart disease (CHD), but no conclusive results were obtained. Therefore, we performed a meta-analysis of 23 case–control studies. Odds ratio (OR) and 95% confidence interval (95% CI) were used to examine the strength of the associations. Among those primary studies, 22 studies were for Europeans, and one study focused on the MTR A2756G polymorphism in Asians. The results of combined analyses of the MTR A2756G polymorphism suggested that the G allele was associated with increased risk of CHD and myocardial infarction (MI) especially for Europeans (GG vs. AA for CHD: OR [95% CI]=1.63 [1.18–2.25], pz-test=0.001, pheterogeneity=0.274; GG+AG vs. AA for MI: OR [95% CI]=1.44 [1.08–1.93], pz-test=0.014, pheterogeneity=0.611). In addition, the G allele was also associated with higher risk CHD based on population-based case–control studies (PCC) (GG vs. AA: OR [95% CI]=1.75 [1.24–2.49], pz-test=0.002, pheterogeneity=0.316). The results suggested that the MTRR A66G polymorphism was not associated with risk of CHD for Europeans (AA vs. GG: OR [95% CI]=1.07 [0.59–1.94], pz-test=0.831, pheterogeneity<0.01). The results suggested that the C allele of the MTHFR A1298C polymorphism might be associated with the increased risk of MI for Europeans (CC vs. CA+AA: OR [95% CI]=1.37 [1.03–1.84], pz-test=0.033, pheterogeneity=0.668). However, when subgroup analyses for sources of controls were performed, conflicting results were obtained. The results suggested that the C allele was associated with decreased risk of CHD based on hospital-based case–control studies, but associated with increased risk of CHD based on PCC. This meta-analysis suggests that MTR A2756G polymorphism, but not MTRR A66G and MTHFR A1298C, is associated with risk of CHD for Europeans. Because of limitations and potential bias, more well-designed studies with larger sample size, especially focused on Asians and Africans, should be performed in the future." @default.
- W2026571535 created "2016-06-24" @default.
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- W2026571535 date "2012-02-01" @default.
- W2026571535 modified "2023-10-16" @default.
- W2026571535 title "Three Genetic Polymorphisms of Homocysteine-Metabolizing Enzymes and Risk of Coronary Heart Disease: A Meta-Analysis Based on 23 Case–Control Studies" @default.
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- W2026571535 doi "https://doi.org/10.1089/dna.2011.1281" @default.
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