Time dependence of Na-nitroprusside administration in the prevention of neutrophil infiltration in the rat ischemic kidney

Transplantation
F Lopez-NeblinaA J Paez-Rollys

Abstract

The aim of this study was to determine the ideal time of administration of Na-nitroprusside to prevent neutrophil infiltration in ischemically damaged kidneys. Sprague-Dawley rats were subjected to 75 min of renal warm ischemia and contralateral nephrectomy. The animals were divided into 7 groups: the ischemic control (IC), which received normal saline, the sham group without warm ischemia and the experimental groups, which received intravenous Na-nitroprusside (NP) (5 mg/kg) at 75, 30, 15, and 5 min prior to reperfusion. Another experimental group was given verapamil (V) (5 mg/kg) as a NO-independent vasodilator 5 min prior to reperfusion. The final evaluation included survival at seven days, serum creatinine (SCr) and blood urea nitrogen (BUN) daily for 3 days, and neutrophil infiltration determined by the presence of myeloperoxidase (MPO) in renal tissue at 2 hr after reperfusion. Histological damage was assessed at 24 hr. There were significant improvements in all parameters when the Na-NP was administered at 75, 30, and 15 min prior to reperfusion when compared with the control group (p < 0.05). There were no differences either in survival or renal function when the 5 min group was compared with the IC or V groups. It is c...Continue Reading

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Citations

Jan 21, 2004·Nitric Oxide : Biology and Chemistry·Daniela Dal SeccoFernando de Queiroz Cunha
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