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Quantitative assessment of the influence of PSMA6 variant (rs1048990) on coronary artery disease risk

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Abstract

The proteasome system is a proteolytic pathway that regulates the expression of genes involved in inflammation. Recently, an association of a functional sequence variation, -8C/G, in the human proteasome subunit a type 6 gene (PSMA6) with the susceptibility to coronary artery disease (CAD) was reported. After that, several validation studies have been conducted among various ethnic populations, but the results have been inconsistent. To investigate this inconsistency and derive a more precise estimation of the relationship, a meta-analysis of 15,991 cases and 16,784 controls from 10 case–control studies was performed. Potential sources of heterogeneity including ethnicity, sample size and HWE status of study were also assessed. In a combined analysis, the summary per-allele OR for CAD of the -8C/G polymorphism was 1.09 (95 % CI: 1.02–1.16; P = 0.006). In the subgroup analysis by ethnicity, significantly increased risks were found in East Asians for the polymorphism; while no significant associations were found among Caucasians and other ethnic population in all genetic models. When restricted to studies concerning myocardial infarction patients, significant associations were detected in all genetic models. Furthermore, significant difference of PSMA6 mRNA expression was found between genotypes. In conclusion, this meta-analysis suggests that G allele of PSMA6-8C/G polymorphism is a risk factor associated with increased CAD susceptibility, but these associations vary in different ethnic populations.

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Abbreviations

CAD:

Coronary artery disease

MI:

Myocardial infarction

PSMA6:

Proteasome subunit α type 6

CI:

Confidence interval

HWE:

Hardy–Weinberg equilibrium

OR:

Odds ratio

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Acknowledgments

The project as supported by a leadership award to H. W (PWRd2011-04) and by the key discipline construction funding (PWZxk201005) from the Pudong New Area Health Bureau, Shanghai, China.

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Correspondence to Jide Lu or Jianping Qiu.

Additional information

Hairong Wang and Mei Jiang contributed equally to this study.

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Wang, H., Jiang, M., Zhu, H. et al. Quantitative assessment of the influence of PSMA6 variant (rs1048990) on coronary artery disease risk. Mol Biol Rep 40, 1035–1041 (2013). https://doi.org/10.1007/s11033-012-2146-2

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  • DOI: https://doi.org/10.1007/s11033-012-2146-2

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