ZNF365基因多态性与儿童支气管哮喘的相关性

Association between ZNF365 gene polymorphisms and bronchial asthma in children

摘要:

目的 探讨我国中部湖北地区儿童ZNF365基因的两个SNP位点(rs2393903和rs10995251)的多态性与支气管哮喘及其临床特点的关系。方法 采用病例-对照的研究方法,选取湖北地区221例支气管哮喘患儿和243例同时期体检正常的儿童作为研究对象,利用限制性片段长度多态性分析的方法检测两个SNP位点的多态性分布。结果 哮喘患儿中SNP rs2393903位点的3种基因型(GG、GA、AA)分布及等位基因频率与正常对照组相比差异均无统计学意义;而SNP rs10995251位点的基因型(CC、CT、TT)以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),C等位基因为风险因子(OR=1.380)。在哮喘患儿中SNP rs10995251位点CC基因型患儿血清免疫球蛋白E(IgE)的水平高于TT基因型患儿(P< 0.05)。结论 ZNF365基因SNP rs10995251位点的多态性与我国中部湖北地区儿童支气管哮喘的易感性相关;且该位点的多态性可能影响患儿血清IgE水平。

Abstract:

Objective To study the association of single nucleotide polymorphisms (SNP) (rs2393903 and rs10995251) in ZNF365 gene with bronchial asthma and its clinical characteristics in Han Chinese children in Hubei, China. Methods A total of 221 children with bronchial asthma and 243 normal children, all of whom were from Hubei, were recruited to carry out a case-control study. The genotype and allele frequencies of two SNPs in ZNF365 gene were determined using the polymerase chain reaction-restriction fragment length polymorphism technique. Results There were no significant differences in the distribution of three genotypes (GG, GA, AA) and allele frequency in SNP rs2393903 between the asthma and control groups (P> 0.05). However, there were significant differences in the distribution of three genotypes (CC, CT, TT) and allele frequency in SNP rs10995251 between the asthma and control groups (P< 0.05); C allele was a risk factor (OR=1.380). The asthmatic children with CC genotype of SNP rs10995251 had a significantly higher serum level of total immunoglobulin E (IgE) than those with TT genotype (P< 0.05). Conclusions The SNP rs10995251 in ZNF365 gene is associated with the susceptibility to bronchial asthma in children in Hubei, China, and the SNP may affect the level of serum IgE in these children.