汉族人群IL10基因多态性与血脂水平的关系

目的探讨正常汉族人群白细胞介素10（interleukin 10，IL10）基因多态性与血脂水平的关系。方法应用PCR限制性片段长度多态性分析法，检测200名汉族正常人IL10基因启动子区的3个多态位点-1082、-819和-592的各种基因型的分布，并分析它们与血清脂蛋白浓度相应的关系。结果IL10—592（AA、CA、CC）和-819位点（CC、CT、TT）各基因型间的血脂水平的差异无统计学意义（P〉0．05）；IL-10—1082位点，GA基因型与从型相比，高密度脂蛋白浓度显著增高[（1．514±0．501）mmol／LVS．（1．261±0．346）mmol／L，t=-2．225，P=0．028]，甘油三酯浓度降低[（1．701±1．836）mmol／LV8．（0．981±0．314）mmol／L，Z=-2．096，P=0．036]，但总胆固醇、极低密度脂蛋白、低密度脂蛋白血清浓度间差异无统计学意义。结论 IL-10启动区-1082位点G／A基因多态性与血清甘油三酯及高密度脂蛋白浓度相关。

Relationship between polymorphisms of interleukin 10 promoter and serum levels of lipoprotein in the Chinese Han population

OBJECTIVE: To study the relationship between polymorphisms of interleukin 10 (IL10QX) promoter and serum levels of lipoprotein in the healthy Chinese Han population. METHODS: PCR restriction fragment length polymorphism assay was used to detect the distribution of genotypes of IL10 -592,-819,-1082 in 200 healthy Chinese Han subjects. Serum levels of total cholesterol (TC), triglyceride (TG), high density lipoprotein-cholesterol (HDL-C), low density lipoprotein-cholesterol (LDL-C) and very low-density lipoprotein (VLDL) in all subjects were measured to analyze the relationship with the polymorphisms of IL10 promoter. RESULTS: Comparing with AA genotype, the group with GA genotype at IL10 promoter -1082 position had a significant elevation of serum HDL-C level [(1.514+/-0.501) mmol/L vs. (1.261+/-0.346) mmol/L, t=-2.225, P=0.028] and a lower serum TG level[(1.701+/-1.836) mmol/L vs. (0.981+/-0.314) mmol/L,Z=-2.096,P=0.036]. The TG, TC, HDL-C, LDL-C and VLDL levels did not show any statistically significant differences among different genotypes (CC, AA, CA) of the IL10 -592, as well as the genotypes (TT, TA, AA) ofIL10 -819 (P>0.05). CONCLUSION: The results suggest that in the Chinese Han population, the polymorphism at position -1082 in the promoter region of IL10 gene may be associated with the serum HDL-C level and TG level.