急性脑缺血大鼠外周血内皮祖细胞研究

被引:8
作者
路敬叶
周广喜
牛荣东
机构
[1] 天津医科大学总医院神经内科,天津市神经病学研究所,天津市神经损伤变异与再生重点实验室
关键词
脑缺血; 再灌注损伤; 内皮细胞; 免疫组织化学; 疾病模型,动物;
D O I
暂无
中图分类号
R743.3 [急性脑血管疾病(中风)];
学科分类号
1002 ;
摘要
目的观察急性脑缺血大鼠外周血内皮祖细胞数目的变化,探讨其在缺血性脑血管病发生、发展中的病理生理学机制。方法30只健康雄性老年Wistar大鼠,随机分为假手术组、缺血组和缺血-再灌注组。建立大脑中动脉闭塞模型,密度梯度离心获得外周血单个核细胞,流式细胞术检测CD34和CD133表达水平。结果不同处理组大鼠各时间点外周血内皮祖细胞数目比较,差异具有统计学意义(均P<0.05)。手术后24h,缺血组和缺血-再灌注组大鼠外周血内皮祖细胞数目减少至最低水平(均P<0.05),且以缺血组更为明显(P<0.05);至手术后7d,缺血-再灌注组大鼠外周血内皮祖细胞数目恢复至正常值范围(P>0.05);至手术后10d,缺血组方恢复至正常值水平(P>0.05)。结论老年大鼠急性脑缺血早期即出现外周血内皮祖细胞数目显著减少,其中以缺血组细胞数目减少更为明显,且恢复至正常值范围的时间较缺血-再灌注组延长。
引用
收藏
页码:280 / 283
页数:4
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