摘要目的 探讨动脉粥样硬化性脑梗死患者行颅内大动脉支架置入术前后血浆血管性假血友病因子(vWF)水平的变化与血管狭窄程度之间的关系. 方法 选择南方医科大学珠江医院神经内科自2008年2月至10月收治的急性动脉粥样硬化性脑梗死并行颅内大动脉支架置入术的患者为病例组(38例),同期健康体检者为对照组(30例).病例组患者按术前颅内大动脉狭窄程度是否≥70%分为重度狭窄和非重度狭窄两个亚组.以双抗夹心酶联免疫吸附(S-ELISA)法检测对照组及病例组手术前后血浆vWF水平. 结果病例组患者治疗前后血浆vWF均水平高于对照组,差异有统计学意义(P=0.0001;重度狭窄亚组治疗后血浆vWF水平及其治疗前后变化量均明显高于非重度狭窄组,差异均有统计学意义(P=0.015,0.000). 结论 急性动脉粥样硬化性脑梗死患者颅内大动脉支架置入术后血浆vWF水平及其治疗前后变化最均与术前血管狭窄程度有关,狭窄程度越高,术后血管内皮损伤越重.

abstractsObjective To understand the correlation between plasma von Wilebrand factor (vWF) changes after stenting and the degree of preoperative intracranial major artery stenosis in patients with acute atherosclerotie cerebral infarction. Methods This study involved 38 consecutive patients with acute cerebral infarction due to intracranial major artery atherosclerosis, who were admitted between February and October 2008 and underwent stent placement in the stenotic arteries. Thirty healthy volunteers were also recruited to serve as the control group. The patients were divided into severe stenosis group (with stenosis of the intracranial major artery≥70%) and non-severe stenosis groups. Venous blood samples were obtained from the subjects on the morning of the first and 7th days after admission to measure the plasma levels of vWF using sandwich enzyme-linked immunosorbent assay. Results The plasma levels of vWF were significantly higher in patients with acute cerebral infarction than in the control group(P=0.000). Compared with those with non-severe stenosis, the patients with severe stenosis exhibited significantly higher plasma levels of vWF (P=0.015) and greater vWF variation after stent placement (P=0.000). Conclusions In patients with acute atherosclerotic cerebral infarction due to severe intracranial major artery stenosis, the plasma levels of vWF and its postoperative variation are positively correlated to the degree of senosis of the culprit arteries, and severer stenosis is associated with greater postoperative damage of the vascular endothelium.