Title |
Limb remote ischemic postconditioning protects cerebral ischemia from injury associated with expression of HIF-1α in rats
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Published in |
BMC Neuroscience, December 2015
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DOI | 10.1186/s12868-015-0235-6 |
Pubmed ID | |
Authors |
Yonghua Zong, Ling Jiang, Mingxiao Zhang, Fangfang Zhou, Wenqian Qi, Shuai Li, Huijun Yang, Yu Zou, Qingjie Xia, Xue Zhou, Xiaosong Hu, Tinghua Wang |
Abstract |
Limb remote ischemic postconditioning (LRIP) can ameliorate cerebral ischemia-reperfusion injury (IRI), while the underlying mechanism remains elusive. Hypoxia-inducible factor 1α (HIF-1α) is an important transcription factor during cerebral ischemia damage. However, whether the neuroprotective effect of LRIP could be associated with HIF-1α is somewhat unclear. Here we tested the hypothesis that Limb remote ischemic postconditioning (LRIP) protecting brain from injury in middle cerebral artery occlusion (MCAO) rat model was associated with HIF-1α expression. LRIP was conducted with 3 cycles of 10 min occlusion/10 min reperfusion at the beginning of reperfusion. The analysis of neurobehavioral function and triphenyltetrazolium chloride (TTC) staining showed the neurological deficit, brain infarct and cerebral edema, caused by ischemia-reperfusion injury (IRI), were dramatically ameliorated in LRIP administrated animals. Meanwhile, the result of Q-PCR and western blot revealed that the overexpression of HIF-1α induced by IRI could be notably suppressed by LRIP treatment. LRIP exhibits a protective effect against cerebral ischemia/reperfusion and the possible mechanism is associated with the suppression of HIF-1α in stroke rats. |
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