title: Neuroprotective Effects of (-)-Epigallocatechin-3-Gallate Against Focal Cerebral Ischemia/Reperfusion Injury in Rats Through Attenuation of Inflammation.
abstract: Stroke is the second leading cause of death among adults worldwide. (-)-Epigallocatechin-3-gallate (EGCG) has been demonstrated to exhibit neuroprotective functions in cerebral ischemia/reperfusion injury. However, the underlying mechanisms in this process and its contribution to the protection function remain unknown. The current study examined the neuroprotective effects of EGCG after transient middle cerebral artery occlusion (tMCAO) in rats. tMCAO for 120 min was induced in male Sprague-Dawley rats treated with EGCG (50 mg/kg, i.p.) or Vehicle immediately after reperfusion. Neurological score, infarct ratio and inflammation-related molecules (assessed by 2,3,5-triphenyltetrazolium chloride, enzyme-linked immunosorbent assays, quantitative real-time PCR or western blotting) were estimated at 24 h after operation. EGCG prevented the impairment of neurological function and decreased the infarct volume, compared with the Vehicle group. The inflammation-related molecules TNF-α, IL-1β, IL-6 levels usually caused by ischemia/reperfusion were significantly ameliorated by EGCG. EGCG also inhibited the upregulation of nuclear factor-kappa B/p65 (NF-κB/p65), and induction of cyclooxygenase 2 and inducible nitric oxide synthase. The present study indicates that EGCG may be a promising therapeutic agent for cerebral ischemia/reperfusion injury through attenuation of inflammation.
authors.affiliation: School of Bioscience and Bioengineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou City, People's Republic of China, zhangfj008@qq.com.
authors.forename: FengJin
authors.initials: F
authors.lastname: Zhang
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: LinLan
authors.initials: L
authors.lastname: Jiang
authors.forename: LongHao
authors.initials: L
authors.lastname: Chen
authors.forename: MuTu
authors.initials: M
authors.lastname: Huang
mesh_terms: D000818:Animals; D002545:Brain Ischemia / Q000378:metabolism / Q000517:prevention & control*; D002392:Catechin / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000627:therapeutic use; D007249:Inflammation / Q000378:metabolism / Q000517:prevention & control; D018836:Inflammation Mediators / Q000037:antagonists & inhibitors* / Q000378:metabolism; D008297:Male; D018696:Neuroprotective Agents / Q000494:pharmacology / Q000627:therapeutic use*; D051381:Rats; D017207:Rats, Sprague-Dawley; D015427:Reperfusion Injury / Q000378:metabolism / Q000517:prevention & control*; D016896:Treatment Outcome
chemical_list: D018836:Inflammation Mediators; D018696:Neuroprotective Agents; D002392:Catechin; C045651:epigallocatechin gallate