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  • Title: Influence of LGALS3 gene polymorphisms on susceptibility and prognosis of dilated cardiomyopathy in a Northern Han Chinese population.
    Author: Zhang Y, Wang Y, Zhai M, Gan T, Zhao X, Zhang R, An T, Huang Y, Zhou Q, Zhang J.
    Journal: Gene; 2018 Feb 05; 642():293-298. PubMed ID: 29129812.
    Abstract:
    BACKGROUND: Galectin-3 plays an important role in modulating cardiac inflammation and fibrosis. It also takes part in the pathways underlying cardiac remodeling. Therefore, LGALS3 gene, encoding galectin-3 protein, is a promising candidate for the genetic study of dilated cardiomyopathy (DCM). To date, there has been no research evaluating the association between LGALS3 gene polymorphisms and the susceptibility and prognosis of DCM. METHODS AND RESULTS: Genotyping of 4 single nucleotide polymorphisms (SNPs) in the LGALS3 gene, which were reported to be functional in the literature, was performed in 279 unrelated clinically diagnosed DCM patients and 363 apparently healthy controls from Northern Han Chinese population using iPLEX SNP Genotyping analysis on a Sequenom MassARRAY System. The frequency of G allelic polymorphism of rs1009977 and the C allelic polymorphism of rs4652 were lower in DCM patients (OR=0.77, 95% CI [0.60-0.99], P=0.045; OR=0.79, 95% CI [0.63-0.99], P=0.042, respectively). The minor variants of rs1009977 and rs4652 were associated with low susceptibility of DCM under additive genetic models (P=0.045 and P=0.040, respectively). The AA genotype of both rs2274273 and rs4644 was associated with lower left ventricular ejection fraction (recessive model, P=0.018 for both; additive model, P=0.039 for both). The G variant of rs1009977 was related with lower serum galectin-3 level in DCM patients under three genetic models (additive model, P=0.020, dominant model, P=0.020, recessive model, P=0.037). The A variant of both rs2274273 and rs4644 was associated with lower level of galectin-3 in DCM patients under additive model (P=0.032 for both) and dominant model (P=0.012 for both). None of the 4 SNPs was associated with the cardiovascular or all-cause death rate of DCM. In Conclusion, LGALS3 gene polymorphisms might be associated with the susceptibility of DCM in a Northern Han Chinese population.
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