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  • Title: Assessment of Galectin-3 Polymorphism in Subjects with Chronic Chagas Disease.
    Author: Cruz Gda S, Angelo AL, Larocca TF, Macedo CT, Noya-Rabelo M, Correia LC, Torreão JA, Souza BS, Santos RR, Soares MB.
    Journal: Arq Bras Cardiol; 2015 Nov; 105(5):472-8. PubMed ID: 26312551.
    Abstract:
    BACKGROUND: Galectin-3, a β-galactoside binding lectin, has been described as a mediator of cardiac fibrosis in experimental studies and as a risk factor associated with cardiovascular events in subjects with heart failure. Previous studies have evaluated the genetic susceptibility to Chagas disease in humans, including the polymorphisms of cytokine genes, demonstrating correlations between the genetic polymorphism and cardiomyopathy development in the chronic phase. However, the relationship between the galectin-3 single nucleotide polymorphism (SNP) and phenotypic variations in Chagas disease has not been evaluated. OBJECTIVE: The present study aimed to determine whether genetic polymorphisms of galectin-3 may predispose to the development of cardiac forms of Chagas disease. METHODS: Fifty-five subjects with Chagas disease were enrolled in this observational study. Real-time polymerase chain reaction (PCR) was used for genotyping the variants rs4644 and rs4652 of the galectin-3 gene. RESULTS: For the SNP rs4644, the relative risk for the cardiac form was not associated with the genotypes AA (OR = 0.79, p = 0.759), AC (OR = 4.38, p = 0.058), or CC (OR = 0.39, p = 0.127). Similarly, for the SNP rs4652, no association was found between the genotypes AA (OR = 0.64, p = 0.571), AC (OR = 2.85, p = 0.105), or CC (OR = 0.49, p = 0.227) and the cardiac form of the disease. CONCLUSION: Our results showed no association between the different genotypes for both SNPs of the galectin-3 gene and the cardiac form of Chagas disease.
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