作者
Xuwen Gao, Hanfeng Zhang, Tetsuya Takahashi, Jason Hsieh, Janette Liao, Gary K Steinberg, Heng Zhao
发表日期
2008/5
期刊
Journal of neurochemistry
卷号
105
期号
3
页码范围
943-955
出版商
Blackwell Publishing Ltd
简介
We previously reported that ischemic postconditioning with a series of mechanical interruptions of reperfusion reduced infarct volume 2 days after focal ischemia in rats. Here, we extend this data by examining long‐term protection and exploring underlying mechanisms involving the Akt, mitogen‐activated protein kinase (MAPK) and protein kinase C (PKC) signaling pathways. Post‐conditioning reduced infarct and improved behavioral function assessed 30 days after stroke. Additionally, postconditioning increased levels of phosphorylated Akt (Ser473) as measured by western blot and Akt activity as measured by an in vitro kinase assay. Inhibiting Akt activity by a phosphoinositide 3‐kinase inhibitor, LY294002, enlarged infarct in postconditioned rats. Postconditioning did not affect protein levels of phosphorylated‐phosphatase and tensin homologue deleted on chromosome 10 or ‐phosphoinositide‐dependent …
引用总数
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