急性缺血性卒中患者血清胱抑素C水平与脑微出血的相关性

摘要

目的 探讨急性脑梗死患者血清胱抑素C(cystatin C,CysC)水平与脑微出血(cerebral microbleeds,CMBs)的相关性.方法 纳入急性缺血性卒中患者,应用磁敏感加权成像确定CMBs的存在,应用颗粒增强免疫比浊法测定血清CysC水平.结果 共纳入485例急性缺血性卒中患者,其中151例存在CMBs(31.1％).CMBs组血清CysC水平显著高于非CMBs组[(1.24±0.13)mg/L对(1.02±0.11) mg/L;=4.261,P＜0.001].多变量logistic回归分析显示,血清CysC水平增高是急性缺血性卒中患者存在CMBs的独立危险因素(每增高1个标准差优势比4.063,95％可信区间2.142～8.127;p＜0.001);多重线性回归分析显示,校正其他混杂因素后,急性缺血性卒中患者CMBs数量随着血清CysC水平的升高而增多(r2=0.361,P=0.017).结论 在急性缺血性卒中患者中,血清CysC水平与CMBs独立相关,且CMBs数量随着血清CysC水平的升高而增多.%Objective To investigate the correlation between serum cystatin C (CysC) levels and cerebral microbleeds (CMBs) in patients with acute ischemic stroke.Methods The patients with acute ischemic stroke were enrolled.Susceptibility weighted imaging was used to identify the presence of CMBs.Particle-enhanced turbidimetric immunoassay was used to detect the levels of serum CysC.Results A total of 485 patients with acute ischemic stroke were enrolled,including 151 (31.1％) with CMBs.The level of serum CysC of the CMB group was significantly higher than that of the non-CMB group (1.24± 0.13 mg/L vs.1.02± 0.11 rmg/L; t=4.261,P＜ 0.001).Multivariate logistic regression analysis showed that the increased serum CysC level was an independent risk factor for the presence of CMBs in patients with acute ischemic stroke (each increase in one standard deviation,odds ratio 4.063,95％ confidence interval 2.142-8.127; P ＜0.001).Multiple linear regression analysis showed that the number of CMBs in patients with acute ischemic stroke increased with the increasing serum CysC level after adjusting for other confounders (r2 =0.361,P =0.017).Conclusions In patients with acute ischemic stroke,the serum CysC levels are independently associated with the CMBs,and the number of CMBs increases with the serum CysC level.