Abstract:
OBJECTIVE:CC-chemokine receptor 5 (CCR5) plays a pivotal role in reperfusion after stroke. This study assessed and confirmed the effects of CCR5 in experimental stroke via regulation of ROCK/P-MLC pathway. METHODS:Male Sprague Dawley (SD) rats were randomly divided into sham group, ischaemia-reperfusion group (I/R group) and DAPTA group (I/R + CCR5 antagonist group). The rats of the I/R group were subjected to transient middle cerebral artery occlusion (tMCAO) for 2 hours, followed by 24 hours of reperfusion. Animals were measured for neurologic deficit, cerebral infarct volume, TUNEL and hematoxylin-eosin (HE) staining. The protein expressions of ROCK2 and P-MLC2(Ser19) were determined by western blot. RESULTS:Pre-treatment with DAPTA displayed significantly improved neurological functional outcome and reduced cerebral lesion compared with the I/R group animals (p < 0.05); HE staining showed that the I/R group had severe neuronal damage in the ischaemia core and penumbral; Compared with the I/R group, ROCK2 and P-MLC2(Ser19) protein expression in the DAPTA group was reduced (p < 0.05). CONCLUSIONS:The data demonstrate that CCR5 is correlated with up-regulation of the expression of ROCK2 and P-MLC2(Ser19) in the ischaemia cortex. Treated with CCR5 antagonist protects the brain against focal cerebral ischaemia-reperfusion injury in rats.
journal_name
Brain Injjournal_title
Brain injuryauthors
Li L,Zhi D,Shen Y,Liu K,Li H,Chen Jdoi
10.3109/02699052.2015.1129557subject
Has Abstractpub_date
2016-01-01 00:00:00pages
468-73issue
4eissn
0269-9052issn
1362-301Xjournal_volume
30pub_type
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