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  • Title: Association of polymorphisms of angiotensin I converting enzyme 2 with retinopathy in type 2 diabetes mellitus among Chinese individuals.
    Author: Meng N, Zhang Y, Ma J, Li H, Zhou F, Qu Y.
    Journal: Eye (Lond); 2015 Feb; 29(2):266-71. PubMed ID: 25359286.
    Abstract:
    AIMS: To examine the association of Angiotensin I converting enzyme 2 (ACE2) gene polymorphisms and retinopathy in a Chinese type 2 diabetes mellitus (T2DM) cohort. METHODS: A total of 743 T2DM participants were involved in this study including 408 female and 335 male cases. Female cases were divided into two groups: diabetes without retinopathy (DNR group, n=171) and with retinopathy (DR group, n=237), the latter was further subclassified into nonproliferative DR (NPDR group, n=121) and proliferative DR (PDR group, n=116). Male cases were assigned to DNR group (n=153) and DR group (n=182) which was further grouped into NPDR group (n=86) and PDR group (n=96). Two single nucleotide polymorphisms (SNPs; rs2074192 and rs714205) in ACE2 gene were genotyped. RESULTS: In female cases, the frequency of genotypes TT in rs2074192 and CC in rs714205 were higher in DR and PDR group than in DNR group (P<0.05). The frequency of alleles T in SNP rs2074192 and C in SNP rs714205 was higher in DR group (P<0.05) and PDR group (P<0.05) than in DNR group. The frequency of allele T in SNP rs2074192 was higher in PDR group (P=0.04) than in NPDR group. The frequency of haplotype TC and CG was higher in DR and PDR groups, respectively (P<0.05). No positive results were found in male cases. CONCLUSIONS: Our results revealed that SNPs rs2074192 and rs714205 in ACE2 gene were associated with the susceptibility of DR and PDR.
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