高脂血症APOE基因多态性与高密度脂蛋白亚类组成的关系

目的探讨高脂血症患者载脂蛋白E(apolipoproteinE,APOE)基因多态性与高密度脂蛋白(highdensitylipoprotein,HDL)亚类组成变化的关系。方法应用聚合酶链反应-限制性片段长度多态性和双向电泳-免疫印迹检测法,分析112例高脂血症患者和73名正常对照者APOE基因型、HDL各亚类组成及相对含量。结果高脂血症组和对照组APOE基因型及等位基因频率分布均以E3/3和ε3最高。高脂血症患者中等位基因ε2携带者血清APOE/C较等位基因ε3升高,而HDL3b则下降,其差异有显著性(P<0.05)。对照组中等位基因ε2携带者血清甘油三酯、apoE、apoE/C较等位基因ε3和ε4携带者升高,等位基因ε2携带者HDL3a较等位基因ε3携带者低,其差异有显著性(P<0.05)。结论APOE基因多态性可能与血清HDL部分亚类的含量变化相关。

Relationship of APOE gene polymorphism with subclasses of serum high density lipoprotein in hyperlipidemia

OBJECTIVE: To investigate apolipoprotein E(apoE) polymorphism and its relationship with serum lipids and apolipoprotein, serum high density lipoprotein (HDL) subclasses in patients with hyperlipidemia(HL). METHODS: APOE genotype was assayed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The subclasses of serum HDL in 112 patients with hyperlipidemia and 73 healthy subjects were determined by two-dimensional gel electrophoresis in conjunction with immunodetection method. RESULTS: APOE3/3 genotypes and allele epsilon3 frequency in HL group and control group were both the highest. In HL group, the genotype of APOE2 had higher serum APOE/CIII ratio and lower HDL3b levels, compared with the genotype of APOE3 (P<0.05). In control group, the genotype of apoE2 had higher serum triglycerides, APOE levels and APOE/CIII ratio, compared with the genotype of APOE3 and APOE4 (P<0.05). CONCLUSION: Polymorphism of APOE gene may relate to the distribution of HDL particles.