Chitinase 3-like 1 gene-329G/A polymorphism, plasma concentration and risk of coronary heart disease in a Chinese population |
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Authors: | Xie Fangyi Qian Qi Chen Zhong Ma Genshan Feng Yi |
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Institution: | Department of Microbiology and Immunology, Nanjing Medical University, Nanjing, PR China. xiefangyi@sina.com |
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Abstract: | BackgroundThe chitinase-like 1 protein, YKL-40, is involved in inflammation and tissue remodeling. Patients with coronary heart disease (CHD) and acute myocardial infarction have elevated levels of serum YKL-40. The goal of the present study was to investigate whether the chitinase-like 1 gene-329G/A variant (rs10399931) confers susceptibility to CHD, and whether it is associated with the clinical phenotype and severity of disease.MethodsWe performed a case-control study of 410 unrelated CHD patients (coronary stenosis ≥ 50% or documented myocardial infarction) and 442 controls from China. A ligase detection reaction was used to determine a single-nucleotide polymorphism in rs10399931. The genotypic and allelic associations of this single-nucleotide polymorphism with CHD, phenotypes and severity were also evaluated. Plasma levels of YKL-40 were measured using ELISA assays.ResultsThree genotypes, CC, CT, and TT, existed in rs10399931 and there were no significant differences found in either the genotypic or allelic frequencies between the CHD cases and controls. Patients with CHD had higher YKL-40 levels compared to controls and those with acute myocardial infarction had the highest levels of YKL-40 compared to patients with either stable or unstable angina pectoris (all p < 0.01). Rs10399931 affected neither the main anthropometric or metabolic characteristics, nor did there exists any association between rs10399931 and the severity of coronary lesions assessed by Gensini scores (all p > 0.05).ConclusionsOur results do not support that rs10399931 is associated with clinical phenotypes of CHD and the extent of coronary lesions; however, YKL-40 levels are higher in CHD patients and associated with its clinical phenotypes. |
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Keywords: | AMI acute myocardial infarction BMI body mass index CAG coronary angiography CHD coronary heart disease CVD cardiovascular disease FBS fasting blood sugar HDL-C high-density lipoprotein cholesterol LDL-C low-density lipoprotein cholesterol SAP stable angina pectoris SNP single nucleotide polymorphisms TC total cholesterol T2DM type 2 diabetes mellitus TG triglyceride UAP ceunstable angina pectoris VSMCs vascular smooth muscle cells |
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