趋化因子CXCL16和肿瘤坏死因子－α基因联合作用与动脉粥样硬化性脑梗死的相关性

摘要

目的：探讨趋化因子CXCL16（CXCL16）基因G1850A和肿瘤坏死因子－α（TNF-α）基因T1031C联合作用与动脉粥样硬化性脑梗死的关系。方法：选择动脉粥样硬化性脑梗死患者（病例组）120例，健康者75例为对照组。采用限制性片段长度多态性分析技术，检测2组CXCL16基因G1850A和TNF-α基因T1031C多态的分布。结果：病例组CXCL16基因G1850A的AA基因型（35．8％ vs 20．0％）、A等位基因频率（59．6％ vs 44．0％）和TNF-α T1031C的CC基因型（2．5％ vs 1．3％）、C等位基因频率（21．3％ vs 11．3％）明显高于对照组（P ＜0．05）。 CXCL16基因1850位点与TNF-α1031位点联合作用与脑梗死的发病具有相关性（χ2＝7．502，df ＝2，P ＝0．023）。结论：CXCL16基因G1850A的A等位基因和TNF-α基因 T1031C的C等位基因可能是脑梗死的遗传易感基因之一。 CXCL16基因1850位点与TNF-α1031位点联合作用与脑梗死的发病具有相关性。%Objective To investigate the joint action of CXCL16 G1850A and TNF-α T1031C genes polymorphisms in patients with atherosclerotic cerebral infarction (ACI). Methods CXCL16 gene, G1850A and TNF-α gene T1031C mononucleotide polymorphism were tested with polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) in 120 ACI patients and 75 healthy controls. Results The CXCL16 gene 1850 site AA genotype (35.8% vs 20.0%), A allele frequency (59.6% vs 44.0%), the TNF-αgene 1031 site CC genotype(2.5% vs 1.3%), C allele frequency(21.3% vs 11.3%)in ACI group were significantly higher than in the control group(P < 0.05). There was a positive correlation between the joint action of CXCL16 G1850A and TNF-α T1031C genes polymorphisms and ACI (χ2= 7.502,df = 2,P = 0.023). Conclusion The CXCL16 gene 1850, A allele and TNF-α gene 1031 C allele were risk factors for ACI. There is a positive correlation between the joint action of CXCL16 G1850A and TNF-α T1031C genes polymorphisms on ACI.