Abstract：
:Cerebral ischemia is a primary cause of human death and long-term disability. Previous studies have suggested that remote ischemic post-conditioning (RIPC) is a potential useful tool for cerebral ischemic treatment. However, the protective mechanism of RIPC is not very clear. This study verified the hypothesis that, in remote post-conditioning of cerebral ischemic rats, down-regulation of aquaporin 4 (AQP4), which is an important player for water hemostasis in astrocytes, could attenuate cerebral damage after transient middle cerebral artery occlusion (MCAO). In this study, RIPC model was established after MCAO. Each hind limb of rat was clamped by small rubber tubes for 10 min, and then the tubes were opened for 10 min. The clamping and opening were operated for a total of three cycles to block the hind limbs blood flow. The results showed that, RIPC could significantly improve neurological function, decrease the percentage of the infarct volume and edema, and elevate the integrity of blood-brain barrier (BBB). In addition, the numbers of AQP4 and glial fibrillary acidic protein (GFAP) positive cells were significantly lower in the RIPC group. Moreover, we found that AQP4 expression decreased in response to ischemia/reperfusion in the RIPC group. Our findings indicated that RIPC could attenuate focal cerebral ischemia/reperfusion injury, and the neuroprotective mechanism was related with the down-regulation of AQP4 in astrocytes.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Li S,Hu X,Zhang M,Zhou F,Lin N,Xia Q,Zhou Y,Qi W,Zong Y,Yang H,Wang Tdoi
10.1016/j.bbr.2015.04.024subject
Has Abstractpub_date
2015-08-01 00:00:00pages
1-8eissn
0166-4328issn
1872-7549pii
S0166-4328(15)00266-1journal_volume
289pub_type
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