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1.
Clinics (Sao Paulo) ; 63(1): 91-6, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18297213

RESUMO

AIM: The aim of this study was to investigate the efficacy of sodium nitroprusside in the reduction of the intestinal ischemia-reperfusion injury as a nitric oxide donor after intraperitoneal administration. METHODS: The histopathological examinations and tissue malonyldialdehyde levels of 35 Wistar albino rats that were subjected to ischemia-reperfusion, were performed in 5 groups. The groups include Control, Ischemia -reperfusion, Sodium nitroprusside, NG-Nitro-L-Arginine Methyl Ester (L-NAME) and Sodium nitroprusside+L-NAME. Each rat was subjected to ischemia for 40 minutes and reperfusion for 30 minutes, except the control group. The medications were done intraperitoneally as saline 4 ml/kg, Sodium nitroprusside 5 mg/kg, L-NAME 10 mg/kg just before reperfusions. RESULTS: Significant tissue injury in histological sections and an increase in tissue levels of Malonyldialdehyde was detected in the I/R group. The efficacy of intraperitoneal administration of Sodium nitroprusside in both Sodium nitroprusside alone and Sodium nitroprusside+L-NAME groups was found statistically significant for the reducing of injury scores (p<0.05). The difference between the Ischemia/reperfusion and Sodium nitroprusside groups was found statistically significant as in the Ischemia/reperfusion and Sodium nitroprusside+L-NAME groups due to the tissue Malonyldialdehyde levels (p<0.05). There was no statistical difference between Ischemia/reperfusion and L-NAME groups. CONCLUSION: Ischemia/reperfusion induced injury might be reduced by the intraperitoneal administration of Sodium nitroprusside, even in the presence of L-NAME, in the rat intestinal model.


Assuntos
Intestinos/irrigação sanguínea , Isquemia/patologia , NG-Nitroarginina Metil Éster/farmacologia , Doadores de Óxido Nítrico/farmacologia , Nitroprussiato/farmacologia , Traumatismo por Reperfusão/patologia , Animais , Modelos Animais de Doenças , Intestinos/patologia , Isquemia/tratamento farmacológico , Masculino , Malondialdeído/análise , Ratos , Ratos Wistar , Traumatismo por Reperfusão/tratamento farmacológico
2.
Clinics ; Clinics;63(1): 91-96, 2008. ilus, tab
Artigo em Inglês | LILACS | ID: lil-474934

RESUMO

AIM: The aim of this study was to investigate the efficacy of sodium nitroprusside in the reduction of the intestinal ischemiareperfusion injury as a nitric oxide donor after intraperitoneal administration. METHODS: The histopathological examinations and tissue malonyldialdehyde levels of 35 Wistar albino rats that were subjected to ischemia-reperfusion, were performed in 5 groups. The groups include Control, Ischemia -reperfusion, Sodium nitroprusside, NG-Nitro-L-Arginine Methyl Ester (L-NAME) and Sodium nitroprusside+L-NAME. Each rat was subjected to ischemia for 40 minutes and reperfusion for 30 minutes, except the control group. The medications were done intraperitoneally as saline 4 ml/kg, Sodium nitroprusside 5 mg/kg, L-NAME 10 mg/kg just before reperfusions. RESULTS: Significant tissue injury in histological sections and an increase in tissue levels of Malonyldialdehyde was detected in the I/R group. The efficacy of intraperitoneal administration of Sodium nitroprusside in both Sodium nitroprusside alone and Sodium nitroprusside+L-NAME groups was found statistically significant for the reducing of injury scores (p<0.05). The difference between the Ischemia/reperfusion and Sodium nitroprusside groups was found statistically significant as in the Ischemia/reperfusion and Sodium nitroprusside+L-NAME groups due to the tissue Malonyldialdehyde levels (p<0.05). There was no statistical difference between Ischemia/reperfusion and L-NAME groups. CONCLUSION: Ischemia/reperfusion induced injury might be reduced by the intraperitoneal administration of Sodium nitroprusside, even in the presence of L-NAME, in the rat intestinal model.


Assuntos
Animais , Masculino , Ratos , Intestinos/irrigação sanguínea , Isquemia/patologia , NG-Nitroarginina Metil Éster/farmacologia , Doadores de Óxido Nítrico/farmacologia , Nitroprussiato/farmacologia , Traumatismo por Reperfusão/patologia , Modelos Animais de Doenças , Intestinos/patologia , Isquemia/tratamento farmacológico , Malondialdeído/análise , Ratos Wistar , Traumatismo por Reperfusão/tratamento farmacológico
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