首都医科大学学报 ›› 2013, Vol. 34 ›› Issue (6): 844-850.doi: 10.3969/j.issn.1006-7795.2013.06.013

• 脑血管病的临床和基础研究 • 上一篇    下一篇

远隔缺血后适应对脑缺血/再灌注损伤保护作用的研究

张营1,3, 赵海苹1, 吉训明2, 高素琴3, 罗玉敏1   

  1. 1. 首都医科大学宣武医院脑血管病研究室, 北京 100053;
    2. 首都医科大学宣武医院神经外科, 北京 100053;
    3. 济钢医院神经内科, 济南 250101
  • 收稿日期:2013-10-16 出版日期:2013-12-21 发布日期:2013-12-13
  • 通讯作者: 罗玉敏 E-mail:yumin111@ccmu.edu.cn
  • 基金资助:

    国家自然科学基金(30770743,81071058)。

Effects of remote ischemic postconditioning on the cerebral ischemia/reperfusion injury and its mechanism

ZHANG Ying1,3, ZHAO Haiping1, JI Xunming2, GAO Suqin3, LUO Yumin1   

  1. 1. Cerebrovascular Diseases Research Institute, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    2. Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    3. Department of Neurology, Jigang Hospital, Jinan 250101, China
  • Received:2013-10-16 Online:2013-12-21 Published:2013-12-13
  • Supported by:

    This study was supported by the National Natural Science Foundation of China(30770743,81071058).

摘要:

目的 研究远隔缺血后适应(remote ischemic postconditioning,RIPostC)对脑缺血再灌注(ischemia/reperfusion,I/R)梗死体积及神经功能的影响。方法 大鼠缺血2 h再灌注,即刻进行RIPostC 3个循环。神经功能评分采用Longa评分法、前肢踩空试验和12分评分法3种方法分别在脑缺血后8、24 h,3、7、14和30 d进行神经功能评分,并留取脑组织标本,进行苏木精-伊红(hematoxylin-eosin,HE)染色,计算脑梗死体积;部分大鼠应用头颅磁共振成像扫描进一步明确了大鼠的脑缺血状况。结果 Longa评分显示,与对照组相比,RIPostC组大鼠在7 d的神经功能评分降低,但差异无统计学意义;前肢踩空试验和12分评分法结果均显示:与对照组相比,RIPostC组大鼠3 d和7 d的神经功能评分显著降低,差异有统计学意义(P<0.05)。脑梗死体积分析显示,RIPostC组与对照组相比,RIPostC组大鼠在脑缺血再灌注损伤后8和24 h、3和7 d的脑梗死体积均明显降低,差异具有统计学意义(P<0.05)。结论 RIPostC可以减少大鼠脑缺血后8和24 h、3和7 d的脑梗死体积,改善脑缺血后3d和7d的神经功能评分,具有神经保护作用。

关键词: 脑缺血, 远隔缺血后适应, 神经功能评分, 脑梗死体积

Abstract:

Objective To study the effects of remote ischemic postconditioning(RIPostC) on cerebral ischemia/reperfusion injury in rats. Methods Three cycles of RIPostC were given immediately after 2 hours of the ischemia in rats.We assessed neurological function before the sacrifice; magnetic resonance imaging(MRI) and hematoxylin-eosin staining were used for determining the infarct volumes at 8 hours, 24 hours, 3 days, 7 days, 14 days, and 30 days after the ischemia. Results Compared with the control groups, the neurological function scores were significantly decreased in R3d and R7d groups(P<0.05). The cerebral infarction volumes were significantly decreased in the R8h, R24h, R3d and R7d groups compared with the control groups(P<0.05). Conclusion RIPostC could reduce the cerebral infarction volumes at 8 h, 24 h, 3 d and 7 d after the cerebral ischemia, and improve the neurological defects in 3 days and 7 days after the cerebral ischemia in the model of middle cerebral artery occlusion(MCAO) in rats.

Key words: stroke, remote ischemic postconditioning, neurological function scores, cerebral infarct volumes

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