2008
DOI: 10.1590/s0102-86502008000500006
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Propofol and N-Acetylcysteine attenuate oxidative stress induced by intestinal ischemia/reperfusion in rats: Protein carbonyl detection by immunoblotting

Abstract: Purpose:To evaluate the antioxidant effect of Propofol and N-Acetylcysteine (NAC) on intestinal ischemia/reperfusion (I/R) in rats by determining carbonyl protein level. Methods: Forty Wistar rats were randomly assigned into the following groups: Control; Sham; I/R with Propofol; I/R with Propofol and NAC; I/R with Ketamine and Xylazine. The I/R groups underwent 60 minutes of ischemia and an equal period of reperfusion. Blood samples, collected by cardiac punction, were centrifuged for plasma obtainment. Prote… Show more

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Cited by 17 publications
(9 citation statements)
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“…Recently, more and more evidences suggest that excessive reactive oxygen species during the initial phase of reperfusion acts as a signaling molecule inducing the release of endogenous damage-associated molecular patterns, which are responsible for the damage of liver (6,7). Specially, propofol is an anesthesia induction drug with antioxidant property, the protective effects of which have been described in models of I/R injury in several organs (8,9). For instance, it has been reported to dose-dependently attenuate myocardial I/R injury in patients (10).…”
Section: Original Articlementioning
confidence: 99%
“…Recently, more and more evidences suggest that excessive reactive oxygen species during the initial phase of reperfusion acts as a signaling molecule inducing the release of endogenous damage-associated molecular patterns, which are responsible for the damage of liver (6,7). Specially, propofol is an anesthesia induction drug with antioxidant property, the protective effects of which have been described in models of I/R injury in several organs (8,9). For instance, it has been reported to dose-dependently attenuate myocardial I/R injury in patients (10).…”
Section: Original Articlementioning
confidence: 99%
“…Besides there is also growing evidence that supports the role of protein carbonyl in such conditions [19][20][21][22] . However, one major challenge still exists: how early intestinal reperfusion can be diagnosed before functional impairment or irreversible lesion comes true?…”
Section: Discussionmentioning
confidence: 99%
“…No intestino de ratos a completa conversão da xantina desidrogenase a xantina oxidase, pré-requisito na formação de precursores do estresse oxidativo, leva aproximadamente um minuto após indução da isquemia 21 . O edema da mucosa intestinal e infiltração inflamatória da lâmina própria são importantes lesões observadas 24 , à semelhança de alguns dos achados descritos.…”
Section: Discussão Discussão Discussão Discussão Discussãounclassified
“…O tratamento com propofol também se mostrou eficiente sendo capaz de minimizar as lesões de isquemia e reperfusão mesentérica em ratos 23 . A n-acetilcisteína, com ações farmacológicas análogas a catalase, também foi eficiente na proteção antioxidante contra o estresse oxidativo produzido pela I/R intestinal 24 . Ainda são poucos os estudos clíni-cos que avaliam os benefícios de medidas terapêuticas para a lesão pulmonar de isquemia e reperfusão de tecidos localizados à distância 8 e trata-se de área promissora para estudos futuros.…”
Section: Discussão Discussão Discussão Discussão Discussãounclassified