血浆组织蛋白酶L与伴脑动脉狭窄的急性缺血性卒中患者侧支循环的相关性

目的 探讨伴有脑动脉狭窄的急性缺血性卒中患者血浆组织蛋白酶L(cathepsinL,CatL)水平与脑侧支循环建立的相关性.方法 纳入全脑血管造影检查确诊至少有1条颅内外大动脉(包括颈内动脉、大脑中动脉、椎动脉、基底动脉)狭窄＞70％的急性缺血性卒中患者,应用ASITN/SIR血流分级系统评价脑侧支循环建立情况,0～2级定义为侧支不良,3～4级定义为侧支良好.应用酶联免疫吸附法检测血浆CatL水平.结果 研究共纳入79例伴有脑动脉狭窄的急性缺血性卒中患者,男性63例,女性16例,平均年龄(58.76±12.24)岁;侧支不良组51例(64.56％),侧支良好组28例(35.44％).侧支良好组血浆CatL水平与侧支不良组无显著性差异(7.09±2.27) mg/L对(8.79 ±3.53) mg/L;t =2.751,P=0.069].多变量logistic回归分析发现,只有美国国立卫生研究院卒中量表评分高为侧支循环不良的独立危险因素(优势比0.935,95％可信区间0.823～0.963;P =0.046),而血浆CatL水平与侧支循环状况无显著独立相关性(优势比0.910,95％可信区间0.766～1.081;P=0.285).结论 伴有脑动脉狭窄的急性缺血性卒中患者血浆CatL水平与脑侧支循环的建立无显著相关性.

Correlation between plasma cathepsin L and collateral circulation in acute ischemic stroke patients with cerebral artery stenosis

Objective To investigate the correlation between plasma cathepsin L (CatL) levels and establishment of cerebral collateral circulation in acute ischemic stroke patients with cerebral artery stenosis.Methods The patients with acute ischemic stroke with at least one cerebral large artery (including internal carotid artery,middle cerebral artery,vertebral artery,and basilar artery) stenosis ＞ 70％ diagnosed by whole cerebral angiography were enrolled.ASITN/SIR blood flow classification system was used to systematically evaluate the establishment of cerebral collateral circulation.Grade 0-2 was defined as poor collateral branch and 3-4 was defined as good collateral branch,Enzyme linked immunosorbent assay was used to detect the plasma CatL level.Results A total of 79 acute ischemic stroke patients with cerebral artery stenosis were enrolled,including 63 male and 16 female.Their mean age was 58.76 ± 12.24 years old.There were 51 patients (64.56％) in the poor collateral branch group and 28 (35.44％) in the good collateral branch group.There was no significant difference in plasma CatL levels between the good collateral circulation group and the poor collateral circulation group (7.09± 2.27 mg/L vs.8.79±3.53 mg/L;t =2.751,P =0.069).Multivariable logistic regression analysis showed that only the high National Institutes of Health Stroke Scale score was the independent risk factor for poor collateral circulation (odds ratio 0.935,95％ confidence interval 0.823-0.963;P=0.046),and there was no significant independent correlation between plasma CatL levels and collateral circulation (odds ratio 0.910,95％ confidence interval 0.766-1.081;P =0.285).Conclusion There was no significant correlation between plasma CatL levels and cerebral collateral development in acute ischemic stroke patients with cerebral artery stenosis.