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中国临床药理学与治疗学 ›› 2009, Vol. 14 ›› Issue (2): 144-149.

• 基础研究 • 上一篇    下一篇

无创性延迟肢体缺血预适应对大鼠脑缺血再灌注皮层的保护作用

袁恒杰1,2, 罗琼1, 朱学慧1, 于培1, 李玉梅1, 吴艳娜1, 康毅1, 焦建杰1, 娄建石1   

  1. 1天津医科大学药理教研室, 天津300070;
    2天津医科大学总医院药剂科, 天津300052
  • 收稿日期:2008-11-13 修回日期:2009-01-06 出版日期:2009-02-26 发布日期:2020-10-30
  • 通讯作者: 娄建石, 男, 教授, 博导, 研究方向:心血管药理和临床药理。Tel:022-23542686  E-mail:jianshilou@sina.com
  • 作者简介:袁恒杰, 女, 博士在读, 主管药师, 研究方向:脑缺血。Tel:022-60363162  E-mail:hengjieyuan@16.com

Protection of noninvasive delayed limb ischemic preconditioning on cortex against cerebral ischemia reperfusion injury in rats

YUAN Heng-Jie1, 2, LUO Qiong1, ZHU Xue-hui1, YU Pei1, LI Yu-mei1, WU Yan-na1, KANG Yi1, JIAO Jian-jie1, LOU Jian-shi1   

  1. 1Department of Pharmacology, Tianjin Medical University, Tianjin 300070, China;
    2Department of Pharmacy, General Hospital, Tianjin Medical University, Tianjin 300052, China
  • Received:2008-11-13 Revised:2009-01-06 Online:2009-02-26 Published:2020-10-30

摘要: 目的:研究无创性延迟肢体缺血预适应(NDLIP) 对大鼠脑缺血再灌注损伤的保护作用。方法:通过连续3 d, 每天1 次3 个循环左后肢无创性5 min 缺血、5 min 再灌注, 建立NDLIP 模型。实验分4 组:假手术组(sham) 、缺血再灌注组(I R) 、早期脑缺血预适应+I R 组(ECIP +I R) 、NDLIP +I R 组。观察其对脑缺血 再灌注的神经缺损症状, 脑梗死范围, 超氧化物歧化酶(SOD), 谷胱甘肽过氧化物酶(GSH-PX) 活力, 黄嘌呤氧化酶活力(XOD), 丙二醛(MDA) 含量影响。结果:与I R 组相比, ECIP +I R 组及NDLIP +I R 组缺血1 h, 再灌注24 h 后评分有非常显著的降低;脑梗死范围显著减小。与I R 组比较, ECIP +I R 组和NDLIP +I R 组的T-SOD 和Mn-SOD 活力、GSH-PX活力均升高;XOD 活力明显降低, MAD 含量明显减少;ECIP +I R 组和NDLIP +I R 组间差异无统计学意义。结论:NDLIP 可降低I R 对神经的损伤、减小脑梗死范围、提高脑组织抗氧化能力, 减少I R 对脑组织的损伤。

关键词: 远端缺血预适应, 脑缺血预适应, 脑缺血再灌注损伤, 超氧化物歧化酶, 谷胱甘肽过氧化物酶

Abstract: AIM: To study the effects of noninvasive delayed limb ischemic preconditioning (NDLIP) in protecting cerebral tissue from ischemia reperfusion injury.METHODS: NDLIP were performed in rats by three cycle of 5 min ischemia reperfusion of left hind limbs once a day for three days.Animals were divided into four groups :sham group, ischemia reperfusion (I R) group, early cerebral ischemic preconditioning +I R (ECIP +I R) group and NDLIP +I R group.The effects of ischemia reperfusion neurologic defect symptom, cerebral infarction size, superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and xanthine oxidase (XOD), content of malonaldehyde (MDA) in cerebral tissue were observed.RESULTS: Compared with I R group, the neurological score and cerebral infarction size in ECIP +I R group and NDLIP +I R group were markedly lower than those in I R group after ischemic 1 h reperfusion 24 h.Compared with I R group, the activities of T-SOD, Mn-SOD and GSH-PX in ECIP +I R group and NDLIP +I R group increased, while the XOD activity and MDA content obviously decreased, and there were no significant difference between ECIP +I R group and NDLIP +I R group.CONCLUSION: NDLIP could decrease the nerve injury and cerebral infarction size, increase the ability of anti oxidation after I R, and protect cerebral tissue injury of I R.

Key words: remote ischemic preconditioning, brain ischemic preconditioning, cerebral ischemia reperfusion injury, SOD, GSH-PX

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