高脂蛋白(A)水平与脑卒中发病危险因素的关系

背景流行病学及临床观察表明,脂蛋白(A)是一个新的脑血管病危险因素,与缺血性脑卒中关系较大.目的探讨高脂蛋白(A)水平与脑卒中的关系.设计病例-对照分析.单位中南大学湘雅医院神经病学研究所.对象选择1999-09/2002-03在中南大学湘雅医院神经内科住院的294例脑卒中患者.294例脑卒中患者分为脑梗死组159例,急性高血压性脑出血组135例.脑梗死组中动脉粥样硬化性脑梗死者109例,腔隙性脑梗死者50例.并选择来自门诊连续健康体检人员94例为健康体检组.方法采用夹心酶联免疫吸附法测定各组的血浆脂蛋白(A),并将动脉粥样硬化性脑梗死患者及急性高血压性脑出血患者分别按血脂各项正常与否(脂蛋白(A)除外)分成两组,血脂正常组与血脂异常组脂蛋白(A)水平比较采用独立样本t检验,采用多元线性回归法分析性别、高血压及血脂各项与脂蛋白(A)血清水平有无相关性.主要观察指标①动脉粥样硬化性脑梗死组、腔隙性脑梗死组和急性高血压性脑出血组及健康对照组间脂蛋白(A)的比较.②血浆脂蛋白(A)水平与血脂各项的相关性分析.结果所纳入的294例患者及94例正常对照组均进入结果分析.①动脉粥样硬化性脑梗死组、腔隙性脑梗死组和急性高血压性脑出血组及健康对照组间脂蛋白(A)的比较动脉粥样硬化性脑梗死、脑出血组患者脂蛋白(A)水平均较健康对照组增高(P＜0.05).动脉粥样硬化性脑梗死组脂蛋白(A)浓度较急性高血压性脑出血组高(P＜0.05);腔隙性脑梗死患者的脂蛋白(A)水平稍高于对照组,但差异无显著性意义(P＞0.05).②血浆脂蛋白(A)水平与血脂各项的相关性分析血脂正常组与血脂异常组脂蛋白(A)水平比较采用独立样本t检验,显示两组脂蛋白(A)水平接近(P＞0.05).采用多元线性回归法分析亦显示性别、高血压及血脂各项与脂蛋白(A)血清水平无相关性. 结论高脂蛋白(A)可能是脑出血及动脉粥样硬化性脑梗死的独立危险因素.

Relationship between level of high serum lipoprotein (a) and risk factor of stroke onset

BACKGROUND: It is manifested in epidemiology and clinical observation that lipoprotein (a) is a new risk factor of cerebrovascular disease and is closely related to cerebral ischemic stroke.OBJECTIVE: To discuss the relationship between levels of high serum lipoprotein (a) and stroke.DESIGN: Case controlled analysis.SETTING: Neurological Institute of Xiangya Hospital of Central South University.METHODS: Totally 294 patients with stroke were selected from Neurological Department of Xiangya Hospital of Central So, uth University between September 1999 and March 2002. Of them, 159 cases were regarded as cerebral infarction group and other 135 cases as acute hypertensive cerebral hemorrhage group. In cerebral infarction group, 109 patients had atherosclerotic cerebral infarction and 50 patients had lacunar cerebral infarction, and 94patients with contimuous health examination were regarded as health examination group. Serum lipoprotein (a) in each group was assayed with "sandwich enzyme-linked immuno-sorbent assay". According to whether the value of lipid was normal or not, patients with atherosclerotic cerebral infarction and acute hypertensive cerebral hemorrhage were divided into two groups. Comparisons between the two groups were assayed with single sample t test, and multiple liner regression was used to assay whether sex, hypertension and value of lipid were related to the level of serum lipoprotein (a).MAIN OUTCOME MEASURES: ① Comparisons of serum lipoprotein (a)among atherosclerotic cerebral infarction group, lacunar cerebral infarction group, acute hypertensive cerebral hemorrhage group and health examination group. ② Correlated analysis between serum lipoprotein (a) and lipid.RESULTS: Among 294 patients, 94 cases in control group entered the final analysis. ① Comparisons of serum lipoprotein (a) among atherosclerotic cerebral infarction group, lacunar cerebral infarction group, acute hypertensive cerebral hemorrhage group and health examination group: Levels of serum lipoprotein (a) in atherosclerotic cerebral infarction group and cerebral hemorrhage group were higher than those in health control group (P ＜ 0.05), and concentration of lipoprotein (a) in atheroosclerotic cerebral infarction group was increased as compared with that in acute hypertensive cerebral hemorrhage group (P ＜ 0.05). Also, level of lipoprotein (a) in lacunar cerebral infarction group was a little higher than that in control group,but the difference was not significant (P ＞ 0.05). ② Correlated analysis between serum lipoprotein (a) and lipid: Levels of lipoprotein (a) in both normal lipid group and abnormal lipid group were assayed with single sample t test, and the results showed that levels in the two groups were similar (P ＞ 0.05). Multiple liner regression was used to assay whether sex,hypertension and value of lipid were related to level of serum lipoprotein (a).CONCLUSION: Levels of lipoprotein (a) may be an independent risk factor for cerebral hemorrhage and atherosclerotic cerebral infarction.