基质金属蛋白酶-9与脑梗死颈动脉粥样斑块相关性及阿托伐他汀干预后的变化

目的探讨脑梗死颈动脉粥样硬化(AS)斑块的形成及其稳定性与基质金属蛋白酶-9(MMP-9)的相关性及阿托伐他汀干预后MMP-9的变化。方法急性脑梗死患者148例,根据入院后颈动脉彩超结果,分为颈动脉AS斑块阳性组59例,AS斑块阴性组89例,其中前者分为稳定斑块组32例、不稳定斑块组27例。各组予阿司匹林100毫克/日、阿托伐他汀20毫克/日口服等干预治疗(其中有两例因服用阿托伐他汀肝功能损害而退出本研究),同时于治疗前及治疗后2周、4周、12周晨空腹抽取患者肘静脉血,采用双抗体夹心ELISA法测定血清中MMP-9含量。结果颈动脉AS斑块阳性组MMP-9水平(稳定斑块组229.75±80.67ug/L,不稳定斑块组342.98±119.45ug/L)高于阴性组(127.64±38.52ug/L),提示MMP-9与AS斑块的形成有一定的相关性;不稳定斑块组MMP-9水平(342.98±119.45ug/L)明显高于稳定斑块组(229.75±80.67ug/L)及AS斑块阴性组(127.64±38.52ug/L),显示颈内动脉斑块的稳定性与MMP-9密切相关;阿托伐他汀治疗后2周三组血清MMP-9水平分别由229.75±80.67ug/L、342.98±119.45ug/L、127.64±38.52ug/L明显下降至160.45±49.48ug/L、201.47±79.64ug/L、108.67±36.12ug/L,说明他汀类药物起效较快,作用显著;至第4周进一步降至110.34±34.11ug/L、159.66±42.58ug/L、93.73±33.21ug/L,第12周为98.45±32.89ug/L、128.31±40.77ug/L、87.34±30.51ug/L(仍高于正常),表明AS斑块的干预是一个长期的过程,这有助于防止AS斑块的增大及破裂,直接关系到脑梗死患者的预后。结论 MMP-9在颈动脉AS斑块的发生、发展过程中起重要作用,其分泌的增加是斑块不稳定的基础。同时,MMP-9也可作为脑梗死患者颈动脉不稳定性AS斑块干预手段的疗效监测指标。

Research on the relationship between matrix metalloproteinase-9(MMP-9) and carotid artery atherosclerosis plaques in cerebral infarction and MMP-9's changes after treatment of statine

Objective To explore the information of carotid artery atherosclerosis plaques in cerebral infarction and their stablity,as well as the relationship between MMP-9 and carotid artery atherosclerosis plaques and MMP-9's changes after treatment of statine.Methods 148 acute cerebral infarciton patients were divied into 2 groups according to their carotid ultrosound results.There were 59 patients in positive carotid group and 89 patients in negative carotid group.In positive group,32 subjects were in stable caro...