Remote Ischemic Per-Conditioning A Novel Therapy for Acute Stroke?

被引:105
作者
Hahn, Cecil D. [1 ]
Manlhiot, Cedric [2 ]
Schmidt, Michael R. [3 ]
Nielsen, Torsten T. [3 ]
Redington, Andrew N. [2 ]
机构
[1] Hosp Sick Children, Div Neurol, 555 Univ Ave, Toronto, ON M5G 1X8, Canada
[2] Hosp Sick Children, Div Cardiol, Toronto, ON, Canada
[3] Aarhus Univ Hosp, Dept Cardiol, Aarhus N, Denmark
基金
加拿大健康研究院;
关键词
acute ischemic stroke; neuroprotection; remote ischemic conditioning; PRECONDITIONING PROTECTS; MYOCARDIAL-INFARCTION; FOCAL ISCHEMIA; MECHANISM; INJURY; BRAIN;
D O I
10.1161/STROKEAHA.111.622340
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background and Purpose-Remote ischemic preconditioning is a phenomenon by which a short period of sublethal ischemia to an organ protects against subsequent ischemia in another organ. We have recently demonstrated that remote ischemic conditioning by transient hind limb ischemia delivered during ischemia and before reperfusion can provide potent cardioprotection, a phenomenon we termed per-conditioning. This study evaluated whether remote ischemic per-conditioning may provide neuroprotection in a clinically relevant rat model of acute ischemic stroke. Methods-Remote ischemic conditioning by transient limb ischemia was used in a rat transient middle cerebral artery occlusion model of acute stroke. A total of 39 P60 rats were randomly allocated to receive preconditioning, per-conditioning, or sham conditioning. Cerebral ischemia was maintained for 120 minutes followed by reperfusion. The resulting infarct size at 24 hours was quantified using computerized image analysis of 2-3-5-triphenyl tetrazolium chloride-stained brain sections. Results-Compared with control, both pre- and per-conditioning significantly reduced brain infarct size with the more clinically relevant per-conditioning stimulus being superior to preconditioning. Conclusions-Remote per-conditioning by transient limb ischemia is a facile, clinically relevant stimulus that provides potent neuroprotection in a model of regional brain ischemia-reperfusion injury. Further studies are required to better understand the mechanisms and biology of this response before translation to randomized controlled trials of remote per-conditioning for acute ischemic stroke. (Stroke. 2011;42:2960-2962.)
引用
收藏
页码:2960 / 2962
页数:3
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