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  • Title: The TGF-B1 and IL-10 gene polymorphisms are associated with risk of developing silent myocardial ischemia in the diabetic patients.
    Author: Cruz M, Fragoso JM, Alvarez-León E, Escobedo-de-la-Peña J, Valladares A, Juárez-Cedillo T, Pérez-Méndez O, Vargas-Alarcón G.
    Journal: Immunol Lett; 2013; 156(1-2):18-22. PubMed ID: 24060592.
    Abstract:
    Silent myocardial ischemia (SMI) is a multifactorial and polygenic disorder that results from an excessive inflammatory response. Considering the prominent role of IL-10 and TGF-B1 as regulators of the inflammatory process and vascular physiology, the aim of the present study was to analyze whether IL-10 and TGF-B1 single nucleotide polymorphisms (SNPs) are associated with SMI. The IL-10-1082 A>G (rs1800896), IL-10-819 T>C (rs1800871), IL-10-592 A>C (rs1800872), TGF-β1-509 T>C (rs1800469), and TGF-β1 T29C (rs1800470) SNPs were analyzed by 5'exonuclease TaqMan genotyping assays in a group of 149 SMI patients and 248 healthy controls. The IL-10-1082 A>G (rs1800896) SNP was significantly associated with an increased risk of SMI as compared to controls under both dominant and heterozygous models (OR=1.77, Pdom=0.029 and OR=1.69, PHet=0.043). On the other hand, the TGF-β1 509 T>C (rs1800469) SNP was significantly associated with increased risk of SMI as compared to controls under a dominant and additive models (OR=1.82, Pdom=0.035, OR=1.50, Padd=0.026). Finally, the TGF-β1 T29C (rs1800470) SNP was significantly associated with increased risk of SMI as compared to controls under a co-dominant, dominant, recessive, and additive models (OR=3.63, PCod=0.004, OR=2.24, Pdom=0.002, OR=2.46, Prec=0.03 and OR=1.94, Padd=0.001). After adjusted for gender, age, and smoking, two haplotypes (CC and TT) were associated with decreased risk of SMI (OR=0.26, P<0.0001 and OR=0.15, P=0.017). In summary, our data suggest that the IL-10-1082 A>G (rs1800896), TGF-β1-509 T>C (rs1800469), and TGF-β1 T29C (rs1800470) SNPs play an important role in the risk of developing SMI. In our study, it was possible to distinguish two protective haplotypes in TGF-β1 for SMI development.
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