Effects of remote ischemic preconditioning and topical hypothermia in renal ischemia-reperfusion injury in rats
Acta cir. bras
; 33(5): 396-407, May 2018. tab, graf
Article
in En
| LILACS
| ID: biblio-949345
Responsible library:
BR1.1
ABSTRACT
Abstract Purpose:
To evaluate whether combining hypothermia and remote ischemic preconditioning (RIPC) results in protection from ischemia-reperfusion (IR).Methods:
Thirty-two Wistar rats underwent right nephrectomy and were randomly assigned to four experimental protocols on the left kidney warm ischemia (group 1), cold ischemia (group 2), RIPC followed by warm ischemia (group 3), and RIPC followed by cold ischemia (group 4). After 240 minutes of reperfusion, histological changes in the left kidney, as well as lipid peroxidation and antioxidant enzyme activity, were analyzed. The right kidney was used as the control. Serum creatinine was collected before and after the procedures.Results:
RIPC combined with hypothermia during IR experiments revealed no differences on interventional groups regarding histological changes (p=0.722). Oxidative stress showed no significant variations among the groups. Lower serum creatinine at the end of the procedure was seen in animals exposed to hypothermia (p<0.001).Conclusions:
Combination of RIPC and local hypothermia provides no renal protection in IR injury. Hypothermia preserves renal function during ischemic events. Furthermore, RIPC followed by warm IR did not show benefits compared to warm IR alone or controls in our experimental protocol.Key words
Full text:
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Index:
LILACS
Main subject:
Reperfusion Injury
/
Oxidative Stress
/
Ischemic Preconditioning
/
Hypothermia, Induced
/
Kidney
Limits:
Animals
Language:
En
Journal:
Acta cir. bras
Journal subject:
CIRURGIA GERAL
/
Procedimentos Cir£rgicos Operat¢rios
Year:
2018
Type:
Article