Effects of losartan on oxygen free radicals,cell apoptosis and Bcl-2 expression in ischemia-reperfusion injury of pancreas in rats
- VernacularTitle:洛沙坦对缺血再灌注大鼠胰腺氧自由基、细胞凋亡和Bcl-2表达的影响
- Author:
Jun XING
;
Ping XU
;
Desen LIANG
;
Yanbo CHEN
;
Aidong LI
;
Chun SONG
;
Chunfang SONG
- Publication Type:Journal Article
- Keywords:
Losartan/pharm;
Repefusion Injury;
Panccreas/pathol;
Apoptosis
- From:
Chinese Journal of General Surgery
1997;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the protective effect of losartan on acute ischemia-reperfusion(I/R)(injury) of pancreas in rats.Methods Seventy-two Wister rats were randomly divided into 3 groups:(1)(Control group);(2)Ischemia-reperfusion group:the anterior mesenteric artery and the celiac artery were(occluded) for 15 min,30min and 60min followed by 6 hours reperfusion;(3)Losartan group:losartan(40mg/kg)were administered by gavage at 12h and 1h before arterial occlusion.The pathologic changes of pancreatic tissue were observed under light microscopy;TUNEL was used to detect apoptosic of pancreatic cells;Bcl-2 expression in the pancreatic cells of rats was analyzed by immunohistochemistry technique.(Results) Losartan treatment reversed the histological abnormalities including infiltration of inflammatory cells and atrophy of acinar cells.Compared with losartan group,pancreatic tissue of I/R group exhibited increased MDA[((20.1?1.2))nmol/g and((34.9?2.6)) vs(17.9?2.1)nmol/g and(25.2?3.3)nmol/g,P
