易感基因多态性与慢性阻塞性肺疾病遗传易感性的研究

目的 探讨中国北方汉族人群吸烟、血红素加氧酶-1(HO-1)、肿瘤坏死因子-α(TNF-α)、人类β防御素-1(hBD-1)基因多态性与慢性阻塞性肺疾病(COPD)之间的关系.方法 采用病例对照研究和聚合酶链反应-限制性片段长度多态性等技术,检测COPD患者HO-1、TNF-α、hBD-1基因型频率分布结果 COPD组和健康对照组HO-1 L型等位基因频率为23.44%和10.71%,两者差异有统计学意义(P＜0.05);TNF-α突变型基因频率在两组中的频率分别为18.24%和7.53%,两组比较差异有统计学意义(P＜0.05);hBD-1突变型基因频率在两组中的频率分别为14.28%和5.00%,两者差异有统计学意义(P＜0.01).结论 HO-1、TNF-α、hBD-1基因多态性与COPD发生相关.

Relationship of genetic polymorphisms of heme oxygenase-1, tumor necrosis factor-α, human β-defensin -1 with chronic obstructive pulmonary disease

Objective To investigate the relationship of smoking, the gene polymorphisms of heine oxygenase-1, tumor necrosis factor-α, and human β-defensin-1 with chronic obstructive pulmonary disease (COPD). Methods A case-control study was held to compare the genotype frequency distribution of heine oxygenase-1, tumor necrosis factor-α, human β-defensin-1 by PCR -RFLP method and to analyze the relationship among them. Results The L allele gene frequency of heine oxygenase-1 was 23.44% in COPD group and 10.71% in control group with significant difference(P＜0.05). The heterogenesis gene frequency of tumor necrosis factor-α in COPD group and control group were 18. 24% and 7.53% (P＜0.01). The heterogenesis gene frequency of human β-defensin-1 was 14.28% in COPD group and 5.00% in control group with significant difference(P＜0. 01). Conclusions Smoking is a risk factor for COPD. Genetic polymorphisms of heme oxygenase-1, tumor necrosis factor-α, human β-defensin-1 are related with the development of COPD.