TARC/CCL17 基因多态性与川崎病及其临床特征的相关性分析

目的 探讨我国中部汉族人群中TARC/CCL17 基因的SNP 位点(rs223895、rs223899)多态性与川崎病(Kawasaki disease, KD)及其临床特点的关系。方法 采用病例对照研究方法,选取218 例典型KD 患儿和248 例体检正常儿童作为研究对象。利用PCR-RFLP 的方法测定SNP 位点多态性分布;评估TARC/CCL17基因多态性与KD 临床特点的相关性。结果 KD 患儿SNP 位点(rs223895)的基因型(CC、CT、TT)频率及等位基因频率与正常对照组相比差异有统计学意义(P<0.05),且C 等位基因为风险因子(OR=1.379)。SNP位点(rs223899)的基因型频率及等位基因频率与对照组相比差异无统计学意义。SNP 位点(rs223895)CC 基因型患儿的血红蛋白以及白蛋白水平低于其他基因型(CT+TT)的患儿(P<0.05);而血沉高于其他基因型患儿(P<0.05)。结论 TARC/CCL17 基因SNP 位点(rs223895)与KD 的易感性相关,C 等位基因为风险因子;且该SNP 位点多态性可能影响患者血红蛋白、白蛋白及血沉水平。

Association of single nucleotide polymorphisms in TARC/CCL17 gene with Kawasaki disease and its clinical characteristics

Objective To study the association of single nucleotide polymorphisms (SNPs, rs223895 and rs223899) in TARC/CCL17 gene with Kawasaki disease (KD) and its clinical characteristics in Han children from Central China. Methods A case-control study was performed on 218 children with KD and 248 normal control children. The genotypes of SNPs (rs223895 and rs223899) in TARC/CCL17 gene were determined by polymerase chain reaction-restriction fragment length polymorphism. The association between the SNPs in TARC/CCL17 gene and the clinical characteristics of KD was assessed. Results There were significant differences in the genotype (CC, CT, TT) and allele frequencies of SNP rs223895 between children with KD and controls (P<0.05), and C allele was a risk factor (OR=1.397). However, no significant differences were found between the two groups in the genotype and allele frequencies of SNP rs223899. Compared with those with other genotypes (CT+TT) of SNP rs223895, patients with CC genotype had significantly lower hemoglobin (Hb) and albumin (Alb) levels (P<0.05) and a significantly higher erythrocyte sedimentation rate (ESR) (P <0.05). Conclusions The SNP rs223895 in TARC/CCL17 gene is associated with the susceptibility to KD, and C allele is a risk factor. Moreover, SNP rs223895 may influence the levels of Hb, Alb, and ESR.