首页> 外文期刊>CNS neuroscience & therapeutics. >Platelet‐Derived Microparticles are Implicated in Remote Ischemia Conditioning in a Rat Model of Cerebral Infarction
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Platelet‐Derived Microparticles are Implicated in Remote Ischemia Conditioning in a Rat Model of Cerebral Infarction

机译:血小板衍生的微粒参与了脑​​梗死大鼠模型的远程缺血调节

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Summary Aim Remote ischemic preconditioning protects against ischemic organ damage by giving short periods of subcritical ischemia to a remote organ. We tested the hypothesis that remote ischemic conditioning can attenuate cerebral stroke in a rat middle cerebral artery occlusion ( MCAO ) model by microparticles ( MP s). Methods and results MPs were extracted from healthy rats that underwent hindlimb ischemia–reperfusion preconditioning (RIPC), and were transfused into rats that had undergone MCAO without RIPC. The transfusion resulted in an increase in platelet‐derived MPs in blood and reduction in infarction area, confirmed by both 2‐3‐5‐triphenyltetrazolium chloride staining and magnetic resonance imaging, albeit to a lesser degree than RIPC itself. Behavioral tests (modified Neurological Severity Score [ mNSS ]) were calculated to judge the behavioral change. However, no significant difference was observed after MP transfusion in 24 h or the following consecutive 9 days. Conclusions RIPC induces an increase in MP s, and platelet‐derived MP s may confer at least part of the remote protective effect against cerebral ischemic–reperfusion injury.
机译:概述目的远端缺血预处理可通过对远端器官进行短暂的亚临界缺血来防止缺血性器官损害。我们测试了这样的假设,即远程缺血条件可以通过微粒(MP s)减弱大鼠大脑中动脉闭塞(MCAO)模型中的脑卒中。方法和结果从接受过后肢缺血再灌注预处理(RIPC)的健康大鼠中提取MPs,然后将其输注到未经RIPC的MCAO大鼠中。输血导致血液中血小板源性MP的增加和梗死面积的减少,这是通过2-3-5-5三苯基四唑氯化物染色和磁共振成像证实的,尽管程度低于RIPC本身。计算行为测试(修改后的神经系统严重程度评分[mNSS])以判断行为变化。但是,在MP输注24小时或随后连续9天后,未观察到显着差异。结论RIPC引起MP s的增加,而血小板衍生的MP s可能至少部分提供了对脑缺血再灌注损伤的远程保护作用。

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