脑缺血再灌注后皮层微血管超微结构的实验研究

被引:4
作者
马铁柱
涂悦
张赛
孙世中
机构
[1] 武警医学院附属医院脑系科中心
关键词
脑缺血再灌注; 微血管; 超微结构;
D O I
暂无
中图分类号
R743 [脑血管疾病];
学科分类号
100204 [神经病学];
摘要
目的研究急性脑缺血再灌注后皮层微血管超微结构的动态变化。方法将40只雄性大鼠随机分为假手术组(20只)和脑缺血再灌注组(20只)。采用线栓法制作大鼠大脑中动脉缺血模型,脑缺血1h后再灌注1、3、12、72h取材,复合甲基丙烯酸甲酯脑微血管铸型,制作脑微血管标本,扫描电镜观察正常大鼠脑皮层微血管和急性脑损伤后脑皮层微血管形态学的改变。结果与假手术组相比,脑缺血再灌注后出现皮质的血管受损迹象,随着时间推移,铸型血管可呈"豆芽"状甚至出现完全断裂产生"烛泪"状血管铸型断端,最后,进一步形成皮层无血管区。结论急性脑缺血再灌注后脑皮层微血管结构改变是导致脑微循环障碍的重要原因。
引用
收藏
页码:525 / 527+601 +601
页数:4
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