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Effects of CVB-D on GAP-43 mRNA expression and cell injury in hypetensive rats with cerebral ischemia/reperfusion injury
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF NEUROMEDICINE
- Issue:
- 10
- DOI:
- 10.3760/cma.j.issn.1671-8925.2006.10.005
- Key Word:
- 脑缺血再灌注;GAP-43 mRNA;超微结构;环维黄杨星D;大鼠
Abstract： 目的 观察中药单体环维黄杨星D(CVB-D)对易卒中型肾血管性高血压大鼠(RHRSP)脑缺血再灌注不同时间脑组织生长相关蛋白-43(GAP-43)mRNA表达与细胞超微结构损伤的影响.方法 采用环形银夹使SD大鼠的双侧肾动脉狭窄,制成RHRSP,再用线栓法制成一侧大脑中动脉闭塞(MCAO)模型.用原位杂交等方法观察CVB-D对脑缺血2 h后复流1 d、7 d、14 d、30 d不同时间点大鼠脑组织GAP-43 mRNA表达、水含量、梗死面积百分率、行为学评分及细胞超微结构的干预作用.结果 脑缺血2h复流后1 d缺血区周围及海马可见GAP-43 mRNA表达,7 d明显增多至高峰,14d开始下降,30 d时则叫显减少,CVB-D治疗组在上述区域各时间点较对照组显著增加.脑缺血再灌注7 d后,治疗组较对照组大鼠脑水含量及梗死面积显著降低,受损脑组织神经元和血管壁的超微结构亦明显改善. 结论 CVB-D对RHRSP缺血性脑细胞损伤有一定保护作用,其促进轴突的再生可能与上调脑组织GAP-43 mRNA表达有关.
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