Abstract
Background
MicroRNAs (miRNAs) are small, single-stranded, non-protein-coding RNAs of about 22 nucleotides. miRNA molecules have been identified that plays key roles in a broad range of physiologic and pathologic processes. Polymorphisms in the corresponding sequence space are likely to make a significant contribution to phenotypic variation.
Methods and results
To assess the variations of rs11614913 T → C in hsa-mir-196a2 and rs3746444 A → G in hsa-mir-499 in the complex etiology of coronary artery disease (CAD), 956 CAD patients diagnosed by coronary arterial angiography and 620 controls were enrolled. Among the patients, 785 (785/956) had complete follow-ups for 42 months. The variant genotypes CC/CT of hsa-mir-196a2 rs11614913 T → C were not associated with a significantly increased risk of CAD (adjusted OR = 1.02, 95% CI = 0.76–1.38), compared with wide genotype TT, but CC and CC/CT genotypes were associated with 34 and 35% increased risks of serious prognosis of CAD (adjusted HR = 1.34, 95% CI = 1.02–1.75 for CC; adjusted HR = 1.35, 95% CI = 1.03–1.75 for CC/CT). In the variant of hsa-mir-499 rs3746444A → G, GG was associated with the 223% increased risk of CAD (adjusted OR = 3.23, 95% CI = 1.56–6.67). Cox regression analysis showed that age, smoking status, numbers of pathological changes in coronary arteries, rs11614913 T → C, and diabetes mellitus were associated with serious prognosis of CAD.
Conclusion
Our findings strongly implicate the functional miRNAs polymorphisms of hsa-mir-196a2 and hsa-mir-499 genes may modulate the occurrence or prognosis in Chinese CAD.
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Abbreviations
- CAD:
-
Coronary artery disease
- DM:
-
Diabetes mellitus
- TC:
-
Total cholesterol
- TG:
-
Triglyceride
- HDL-C:
-
High density lipoprotein cholesterol
- LDL-C:
-
Low density lipoprotein cholesterol
- LD:
-
Linkage-disequilibrium
- SNP:
-
Single nucleotide polymorphism
- OR:
-
Odds ratio
- HR:
-
Hazard risk
- CI:
-
Confidence interval
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Acknowledgments
This study was supported by the National Natural Science Foundation of China (30901230) and the fund of Scientific Research Priming Project of the New Doctors in Southeast University (9225002435).
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Zhi, H., Wang, L., Ma, G. et al. Polymorphisms of miRNAs genes are associated with the risk and prognosis of coronary artery disease. Clin Res Cardiol 101, 289–296 (2012). https://doi.org/10.1007/s00392-011-0391-3
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DOI: https://doi.org/10.1007/s00392-011-0391-3