【摘要】 目的探讨过氧化物酶体增殖物激活受体γ(relationshipofperoxisomeproliferation-activatedreceptor-gamma,PPARγ)C161→T基因多态性与代谢综合征的关系,从基因水平探讨该基因多态性与老年代谢综合症患者糖、脂代谢的相关性。方法运用聚合酶链式反应及限制酶片段长度多态性技术分析371例无血缘关系汉族老年人(健康老年对照组69例,老年代谢综合征组302例)的PPARγC161→T基因多态性;结合放射免疫技术检测血浆胰岛素水平,估HOMA方法评价胰岛素抵抗状况,以及空腹、餐后2h血糖、血脂、身高、体重等指标,综合分析基因频率、等位基因频率分布及不同基因型与临床资料、生化指标的关系。结果(1)对照组、代谢综合征组T等位基因频率分别为0.217、0.201,C等位基因频率分别为0.783、0.798;C、T等位基因频率在各组间分布差异无统计学意义;(2)老年代谢综合征组CC基因型患者的甘油三酯(2.09±1.59)mmol/L明显高于T等位基因携带组(1.67±0.89)mmol/L。结论(1)PPARγC161→T基因多态性在武汉地区汉族健康老年人与代谢综合征人群之间分布趋势一致;(2)在老年代谢综合征患者中,PPARγ基因的不同基因型参与了脂代谢的调控,T等位基因与较低的甘油三酯水平相关联。更多还原

【Abstract】 Objective To investigate the relationship of peroxisome proliferator activated receptor gamma ( PPARγ)C161T gene polymorphism with related diseases of metabolic syndrome. To disscuss the mechanism of the elderly diseases from gene level and the relation between the gene polymorphism and lipid metabolism. Methods Three hundred seventy one non-sibship subjects of Han nationality were investigated in this study, including 69 old healthy subjects, 302 elderly cases diagnosed as metabolic syndrome. PPARγ C161T gene polymorphism was determined by polymerase chain reaction and restriction fragment length polymorphism, and radioimmunoassay was used to detect serum insulin. The insulin resistance was obtained from homeostasis model assessment (HOMA), and blood glucose, blood lipoprotein, height, weight and so on were tested. The frequencies of PPARγ C161T genotypes and the allele were compared with the clinical data. Results (1) In the groups of old normal health and metabolic syndrome, "T" allele frequency was 0.217,0.201, and "C" allele frequency was 0.783, 0.798 . There was no significant difference between the groups. (2)The triglyceride in CC genotypes of the metabolic syndrome was significantly higher than that in "T" allele carriers. Conclusions (1) The distributing trend of PPAR γ C161T gene polymorphism of the Han nationality in Wuhan in the elderly normal healthy group was in accord with that in the group of the elderly metabolic syndrome. (2) PPAR γ C161T substitution can influence metabolic syndrome, especially in liporprotain metabolism. "T" allele is associated with lower level of triglyceride.更多还原