RESUMO
The aim of this study was to examine the prophylactic protective effects of 3,4-methylenedioxyphenol (sesamol) on ferric-nitrilotriacetate (Fe-NTA)-induced acute renal damage in mice. We induced acute renal injury in mice by treating them with 4 mg/kg of Fe-NTA for 3h. We used blood biochemistry, creatinine clearance, and histological examinations to assess renal function. With a high-performance chemiluminescence analyzer, we also determined the hydroxyl radical and superoxide anion levels (free radicals) generated. Renal xanthine oxidase activities were also assessed. Sesamol inhibited Fe-NTA-induced acute renal injury, renal lipid peroxidation, the levels of renal hydroxyl radical and superoxide anion generated, and the activity of xanthine oxidase in mice. Therefore, we concluded that sesamol protected mice against Fe-NTA-induced oxidative-stress-associated acute renal injury by at least partially inhibiting the production of reactive oxygen species.
Assuntos
Antioxidantes/farmacologia , Benzodioxóis/farmacologia , Quelantes , Compostos Férricos , Nefropatias/prevenção & controle , Ácido Nitrilotriacético/análogos & derivados , Fenóis/farmacologia , Substâncias Protetoras , Animais , Nitrogênio da Ureia Sanguínea , Creatinina/sangue , Relação Dose-Resposta a Droga , Radical Hidroxila/metabolismo , Rim/patologia , Nefropatias/induzido quimicamente , Nefropatias/patologia , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Oxidantes/metabolismo , Proteínas/metabolismo , Superóxidos/metabolismo , Xantina Oxidase/metabolismoRESUMO
Acetaminophen (APAP) overdose causes acute liver injury or even death in both humans and experimental animals. We investigated the effect of sesame oil on APAP-induced acute liver injury. Male Wistar rats were given APAP (1,000 mg/kg; orally) to induce acute liver injury. Acetaminophen significantly increased aspartate transaminase, alanine transaminase, lipid peroxidation, and superoxide anion and hydroxyl radical generation levels; it also induced glutathione depletion. Sesame oil (8 mL/kg; orally) did not alter the gastric absorption of APAP, but it inhibited all the parameters altered by APAP and protected the rats against APAP-induced acute liver injury. We hypothesize that sesame oil maintained the intracellular glutathione levels, reduced reactive oxygen species levels, and inhibited lipid peroxidation in rats with APAP-induced acute liver injury.
