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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (8): 888-891.

• 基础研究 • 上一篇    下一篇

无创性肢体缺血预适应对大鼠心脏的延迟保护作用

李淑娟1,2, 吴艳娜1, 康毅1, 尹永强1, 高卫真1, 刘艳霞1, 娄建石1   

  1. 1天津医科大学药理学教研室, 天津 300070;
    2河北北方学院药理学教研室, 张家口 075000, 河北
  • 收稿日期:2007-04-06 修回日期:2007-07-11 出版日期:2007-08-26 发布日期:2020-10-27
  • 通讯作者: 娄建石, 男, 教授, 博士生导师, 研究方向:心血管药理。 E-mail:jianshilou@sina.com
  • 作者简介:李淑娟,女,博士,讲师,研究方向:心血管药理。 E-mail:wllsj010804@yahoo.com.cn
  • 基金资助:
    天津市自然科学基金项目(003608411)

Delayed protection of limbs atraumatic ischemic preconditioning against myocardial injury in rats

LI Shu-juan1,2, WU Yan-na1, KANG Yi1, YIN Yong-qiang1, GAO Wei-zhen1, LIU Yan-xia1, LOU Jian-shi1   

  1. 1Department of Pharmacology, Tianjin Medical University, Tianjin 300070, China;
    2Department of Pharmacology, Hebei North Medical University, Zhangjiakou 075000, Hebei, China
  • Received:2007-04-06 Revised:2007-07-11 Online:2007-08-26 Published:2020-10-27

摘要: 目的: 研究无创性肢体缺血预适应(RIP) 对大鼠缺血再灌后心脏损伤的影响。方法: 通过连续3 d 每天1 次3 个循环下肢无创性缺血5 min 再灌5 min 建立RIP 模型。实验分4 组:假手术组;缺血再灌(I/R) 组;心肌缺血预适应(CIP) 组;RIP 组。观察RIP 对24 h 后I/R 后心脏生理学、室性心律失常的出现时间和持续时间的影响以及其对I/R 后梗死面积和形态学改变的影响。结果: 与假手术组比较,I/R 组ST 段明显抬高(P<0.01), 并且有室性心律失常、梗死的出现, 心肌细胞的肿胀、炎性细胞的浸润等表现。而CIP 和RIP 能明显改善模型组受损心肌的状态, 减少心肌耗氧量, 降低ST 段的抬高幅度,推迟室性心律失常出现的时间, 缩短持续时间, 降低心律失常的发生率, 减少心肌梗死面积(P<0.01),并能减少心肌细胞的肿胀、间质出血和炎性细胞的浸润。结论: RIP 对大鼠心肌损伤具有较好的延迟保护作用。

关键词: 肢体, 缺血预适应, 心肌保护, 缺血再灌损伤

Abstract: AIM: To observe the effect of limbs atraumatic ischemic preconditioning (RIP) on the myocardial ischemia-reperfusion (I/R) injury in rats. METHODS: RIP were performed in rats by three cycle of 5 min ischemia-reperfusion of hind limbs once time a day for three days.Animals were divided into four groups:sham, I/R, cardiac ischemia preconditioning (CIP) and RIP group.The effects of RIP on myocardial physiological, the onset and duration of ventricular arrhythmia (VA) and the effect on myocardial infarct size and morphologic change after myocardial I/R 24 h were observed. RESULTS: Compared with sham group, the ST-segment was increased (P<0.01).VA, myocardial infarct size, myocardial swelling, interstitial hemorrhage and inflammatory cell infiltrate were appeared in I/R group.But after pretreated with CIP and RIP, the oxygen demands, the elevation of ST-segment, the duration of VA, the incidence of arrhythmia, myocardial infarct size were decreased (P<0.01), the onset of VA was delayed(P<0.01), and the myocardial swelling, interstitial hemorrhage and inflammatory cell infiltrate were decreased. CONCLUSION: RIP has delayed protection effect against myocardial injury in rats.

Key words: limb, ischemic preconditioning, myocardial preservation, ischemia-reperfusion injury

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