• Department of Ophthalmology, The Affiliated Hospital of Luzhou Medical College, Luzhou 646000, China;
LyuHongbin, Email: oculistlvhongbin@163.com
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Objective To assess the association of vascular endothelial growth factor (VEGF) gene-460C/T and-634C/G polymorphism with diabetic retinopathy (DR) among patients in Asia and European by meta-analysis. Methods A systematic search of electronic databases (PubMed, Cochrane Library, EMBASE, VIP, Wanfang technological, CNKI, etc.) was carried out until Jun, 2014. Case-control studies on the relationship between genetic polymorphism of VEGF-460C/T and VEGF-634C/G with diabetic retinopathy were included in this analysis. The data were quantitatively analyzed by RevMan 5.0 software after assessing the quality of included studies. The pooled odds ratios (OR) and their corresponding 95% confidence intervals (CI) were used to assess the strength of the association. Results VEGF-460C/T (7 studies:899 cases and 786 controls) and VEGF-634C/G (10 studies:1615 cases and 1861 controls) were inclued in this meta-analysis. Significant association was found for-460C/T polymorphism in Aisa (C versus T:OR=1.52, 95%CI was, Z=3.72, P=0.0002; CC versus CT+TT:OR=1.61, 95%CI was[1.22, 1.90], Z=3.05, P=0.002; TT versus CT+CC:OR=0.64, 95%CI was[1.19, 2.19], Z=2.07, P=0.04), and VEGF-634CC gene type was associated with DR in European (OR=1.56, 95%CI[1.08, 2.25], Z=2.37, P=0.02). No significant publication bias was found. Conclusions The meta-analysis demonstrated that DR was associated with VEGF-460C/T polymorphism in Asia, and C alleles and CC gene type was the risk polymorphism; VEGF-634C/G polymorphism was not associated with DR, but its CC genotype maybe the risk factor in European. Further case-control studies based on larger sample size are still needed, especially for-634C/G polymorphism.

Citation: GuoLu, LyuHongbin. Association of vascular endothelial growth factor gene polymorphism with diabetic retinopathy in different population: a meta-analysis. Chinese Journal of Ocular Fundus Diseases, 2015, 31(2): 173-178. doi: 10.3760/cma.j.issn.1005-1015.2015.02.016 Copy

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