Apoptosis and Bcl-2 protein expression in rat kidney tissue after severe burn with delayed fluid resuscitation in areas of different altitude
- VernacularTitle:高原不同海拔地区大鼠严重烫伤延迟复苏后肾组织细胞凋亡及Bcl-2蛋白的表达
- Author:
Jiang JIANG
;
Yi LIU
;
Qian CAI
- Publication Type:Journal Article
- Keywords:
burns;
resuscitation,delayed;
altitude;
apoptosis;
protein,Bcl-2
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the changes in Bcl-2 protein expression in rat kidney tissue after severe burn with delayed fluid resuscitation in areas of different altitude,and explore the relationship between its expression and cell apoptosis.Methods The experiments were performed at two altitudes(1 517m and 3 848m).A 30% TBSA Ⅲ? scald model was reproduced with 240 male Wistar rats(120 rats for each altitude).Rats were randomly assigned into delayed fluid resuscitation group(DFR,n=50),immediate fluid resuscitation group(IFR,n=60) and normal control group(NC,n=10).Renal tissue samples were harvested at 1,6,12,24,72 and 168 hours after scald,respectively.The cell apoptosis was detected by tissue chips technic and terminal uridin nick end labeling(TUNEL).The expression of Bcl-2 was detected by immunohistochemistry and image analysis.Results In higher altitude,cellular edema,granular degeneration,necrosis and disintegration of renal tubular epithelial cells;dilation and engorgement of renal glomerular capillaries,degeneration and necrosis of endothelial cells,and congestion,edema and inflammatory cell infiltration in renal interstitium were found.The pathological changes were more serious in DFR group than that in IFR group,and they were worse in the rats at 3 848m altitude than that in those rats at 1 517m altitude.The levels of cell apoptosis and Bcl-2 protein expression were higher in DFR group than that in IFR group,and in the rats at 3 848m altitude than that in those rats at 1 517m altitude(P
