Expression of nuclear factor kappa B in rats’cerebral cells after focal cerebral ischemia and reperfusion and the effects of N-acetylcysteine treatment
- VernacularTitle:核转录因子-?B在局部脑缺血及再灌注损伤后大鼠脑细胞中的表达及N-乙酰半胱氨酸的干预作用
- Author:
Lijie CHEN
;
Songlan LIANG
;
Qingcheng LIANG
- Publication Type:Journal Article
- Keywords:
Brain ischemia;
Reperfusion injury;
Neuroprotective agents;
NF-kappa B;
Acetylcysteine
- From:
Chinese Journal of Neurology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expression of nuclear factor kappa B (NF-?B ) in focal cerebral ischemia and reperfusion and effects of N-acetylcysteine (NAC) pretreatment.Methods The focal cerebral ischemia and reperfusion model was made by suture occlusion of right middle cerebral artery. The rats were randomly assigned to nine groups: sham operated group, 6 hours and 24 hours ischemia groups, 6 hours and 24 hours reperfusion groups, corresponding NAC treatment groups. NAC groups’ rats were treated with NAC (150 mg/kg) prior to occlusion. NF-?B p65 were detected by immunohistochemistry. Brain was stained with 1% triphenyltetrazolium chloride for assessment of the volume of infarction. Apoptosis was detected by terminal-deoxynucleotidyl transferase mediated nick end labeling (TUNEL).Results The translocation of NF-?B from cytoplasm to nucleus increased significantly after ischemia and reperfusion. The expression of NF-?B p65 decreased in NAC pretreatment groups, which were respectively (0.462% ? 0.022%) in 6 hours ischemia-reperfusion groups, (0.452% ? 0.015%) in 24 hours ischemia-reperfusion groups, as compared with saline control groups which were (0.563% ? 0.028%) and (0.554% ? 0.013%) (P
