ApoB基因多态性与长沙汉族人群脑出血的关系及其对血脂水平的影响

目的:分析载脂蛋白B(apolipoprotein B,apo B)基因C7673T多态性与长沙地区汉族人群脑出血的关系及其对血脂水平的影响.方法:采用聚合酶链式反应-限制性片段长度多态性分析法(polymerase chain reaction -restriction fragment length polymorphism,PCR-RFLP)和DNA直接测序法检测130例脑出血患者和100例正常对照者的apoB基因C7673T多态;并用氧化酶法测定其血清甘油三酯(triglyceride,TG)、总胆固醇(total cholesterol,TC)、高密度脂蛋白(high density lipoprotein-cholesterol,HDL)、低密度脂蛋白(low density lipoprotein-cholesterol,LDL)水平;酶联免疫吸附法测定脂蛋白(a) lipoprotein(a),LP(a)]浓度;免疫比浊法测定apoB100及apoAI 浓度.结果:(1)脑出血组和对照组apoB基因C7673T多态T等位基因频率分别为0.108和0.040,脑出血患者组apoB基因C7673T多态T等位基因频率显著高于对照组(P＜0.01).(2)脑出血组apoB基因C7673T多态T/C基因型较C/C基因型的TC和LDL-C显著增高,而HDL-C显著降低(P＜0.05),其它指标差异无统计学意义(P＞0.05). 结论: apoB基因C7673T多态可能与长沙地区汉族人群脑出血有关,且可能通过改变血脂水平影响脑出血的发生发展.

Effect of apoB polymorphism on plasma lipid levels and cerebral hemorrhage in Changsha Han Chinese

OBJECTIVE: To explore the effect of apoB polymorphism on plasma lipid levels and cerebral hemorrhage in (CH) Changsha Han Chinese. METHODS: One hundred thirty CH patients and 100 normal people were involved. C7673T polymorphism of apoprotein B was analyzed by PCR-restriction fragment length polymorphism (PCR-PFLP); and the triglyceride(TG), total cholesterol (TC), high density lipoprotein-cholesterol (HDL), and low density lipoprotein-cholesterol(LDL) levels were examined by oxidase method. The serum level of lipoprotein(a) was determined by immunology method. RESULTS: (1) Allele T frequencies of apoB C7673T in CH patients and the control group were 0.108 and 0.040, respectively. Allele T frequencies of apoB C7673T in the CH patients were significantly higher than those in the control group (P< 0.01). (2) In the CH patients, the levels of TC and LDLjC of the T/C gene type were significantly higher than those of the C/C gene type, while the levels of HDLjC of the T/C gene type were significantly lower than those of the C/C gene type (P< 0.05). CONCLUSION: ApoB C7673T polymorphism may be related to cerebral hemorrhage, and the changing blood lipid level may increase the susceptibility of CH.