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- W2079307577 abstract "The present study was designed to investigate the effects of quercetin on oxidative stress and activation of nuclear factor kappa B (NF-κB) in an experimental model of portal hypertensive gastropathy induced by partial portal vein ligation (PPVL). Portal pressure was significantly elevated in PPVL rats. Transaminase and alkaline phosphatase activities were not significantly modified, indicating absence of liver injury. Histological analysis of gastric sections showed a lost of normal architecture, with edema and vasodilatation. The cytosolic concentration of thiobarbituric acid reactive substances and the lipoperoxidation measurement by chemiluminiscence were significantly increased. Superoxide dismutase activity in gastric mucosa was significantly reduced. Portal hypertensive gastropathy induced a marked activation of NF-κB, accompanied by a decrease in IκB protein levels and a significant induction of nitric oxide synthase (iNOS) protein. Administration of quercetin markedly alleviated histological abnormalities and inhibited oxidative stress and NF-κB activation. IκB decrease and induction of iNOS protein were partially prevented by quercetin. Quercetin treatment, by abolishing the NF-κB signal transduction pathway, may block the production of noxious mediators involved in the pathogenesis of portal hypertensive gastropathy." @default.
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- W2079307577 date "2004-11-01" @default.
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- W2079307577 title "Quercetin prevents oxidative stress and NF-κB activation in gastric mucosa of portal hypertensive rats" @default.
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- W2079307577 doi "https://doi.org/10.1016/j.bcp.2004.07.016" @default.
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