Role of gene polymorphisms/haplotypes and serum levels of interleukin-17A in susceptibility to viral myocarditis |
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Authors: | Hui Tang Hua Pei Qianfeng Xia Yimei Tang Ji Huang Jie Huang Fang Pei |
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Affiliation: | 1. Department of Cardiology, People''s Hospital of Shuangqiao Economic and Technological Development Zone, Chongqing, China;2. Laboratory of Tropical Biomedicine and Biotechnology, Hainan Medical University, Haikou, China;3. Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China;4. Department of Cardiology, Chongqing Municipal Corps Hospital of Chinese People''s Armed Police Force, Chongqing, China |
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Abstract: | Interleukin-17A (IL-17A) has been implicated in the pathogenesis of viral myocarditis (VMC). However, the role of IL-17A polymorphisms in susceptibility to VMC has not been reported to date. The aim of this study was to explore the association between IL-17A variants as well as serum IL-17 levels with VMC. Three single-nucleotide polymorphisms (SNPs) (rs2275913, rs3819025, and rs3748067) were analyzed by the polymerase chain reaction-restriction fragment length polymorphism method in 236 VMC patients and 259 controls from China. Serum IL-17A levels were measured by enzyme-linked immunosorbent assay kits. Multivariable logistic regression analysis that the rs2275913 AA genotype and the haplotype -197A/+45G/+1249G (AGG) were associated with an increased risk of VMC (all P?0.05). Consistent with these findings, the rs2275913 AA genotype was linked to higher serum IL-17A compared to GG/AG genotype (all P?0.001). We observed no associations between the other two SNPs and risk of VMC. Serum IL-17A levels were significantly higher in the VMC group than controls (P?0.001) and gradually increased with the increase of New York Heart Association grade in VMC patients (P?0.05). Spearman correlation test revealed that the serum IL-17A level was correlated with the cardiac damage and left ventricular systolic functions among VMC patients (all P?0.05). Our study reveals that IL-17A expression may contribute to the development and severity of VMC. The SNP rs2275913 in the IL-17A gene might exert influence on susceptibility to VMC via linking with the serum IL-17A level. |
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Keywords: | Viral myocarditis Interleukin (IL)-17A Polymorphism |
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