中文摘要：

目的检测TLR4基因3’非翻译区(3’UTR)11367位点的多态性,探讨该多态性与喘息性疾病的易感性、气道分泌物的细胞因子水平、病原学以及临床表型的关系。方法采用单管双向等位基因特异性扩增技术检测TLR4基因3’UTR11367位点的基因多态性。通过酶联免疫吸附试验(ELISA)法检测喘息组患儿气道分泌物中细胞因子的水平。采用免疫荧光法进行呼吸道合胞病毒检测。结果TLR4G11367C位点核苷酸存在G/C二态性,表现为GG纯合、GC杂合两种基因型。喘息组和对照组该位点基因型、等位基因分布频率之间均存在显著性差异(P均为0.002)。GG型患儿IL-8水平、病原菌感染阳性率均明显高于GC型。不同基因型的临床表型无显著性差异。结论TLR4基因3’UTR基因多态性与喘息性疾病易感性相关,且与气道分泌物中IL-8水平、机体对RSV易感性、气道细菌定植有关。

英文摘要：

Objective To investigate the relationship of the polymorphism of 3'untranslated region of TLR4/11367 gene with susceptibility to wheezing diseases,levels of sputum cytokines,etiology,and clinical phenotypes. Methods The polymorphisms of TLR4 gene 3'UTR 11367G/C were genotyped with the method of single-tube bi-directional allele specific amplification (SB-ASA). The levels of cytokines were measured by enzyme-linked immunosorbent assay (ELISA). Immunofluorescence method was used to test respiratory syncytial ...