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• W1963977324 abstract "Gut regulatory peptides bombesin (BBS) and neurotensin (NT) exert a wide spectrum of biological actions on gastrointestinal tissues and we have previously shown that they improve intestinal barrier function and oxidative stress in experimentally jaundiced rats. In the present study, we explored their potential action on liver histology and oxidative status in bile duct ligated rats. Seventy male Wistar rats were randomly divided into five groups: controls, sham operated, bile duct ligated (BDL), BDL + BBS (10 microg/kg, s.c. x3), BDL + NT (300 microg/kg, i.p.). At the end of the experiment, on day 10, serum total bilirubin and alanine aminotransferase (ALT) levels were determined and endotoxin was measured in portal and aortic blood. Liver tissue samples were examined histologically for evaluation of the ratio of portal tracts presenting changes of obstructive cholangiopathy and neutrophils' number in portal tracts. In addition, hepatic oxidative status was estimated on liver homogenates by measurements of lipid peroxidation (malondialdehyde), protein oxidation (protein carbonyl groups) and thiol redox state [reduced glutathione (GSH), oxidized glutathione (GSSG), total non-protein mixed disulfides (NPSSR) and protein thiols (PSH)]. Administration of BBS or NT significantly reduced portal and aortic endotoxaemia observed in obstructive jaundice. Both agents significantly ameliorated liver injury, as demonstrated by improvement of obstructive cholangiopathy and reduction of ALT. This effect was accompanied by prevention of lipid peroxidation, protein oxidation and decrease of the oxidized forms GSSG and NPSSR. Moreover, neutrophil accumulation in portal tracts was significantly decreased. In conclusion, this study shows that gut regulatory peptides BBS and NT reduce cholestatic liver injury, exerting protective effects on portal tract architecture, neutrophil infiltration and hepatic oxidative stress in bile duct ligated rats." @default.
• W1963977324 created "2016-06-24" @default.
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• W1963977324 date "2004-08-01" @default.
• W1963977324 modified "2023-09-23" @default.
• W1963977324 title "Gut regulatory peptides bombesin and neurotensin reduce hepatic oxidative stress and histological alterations in bile duct ligated rats" @default.
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• W1963977324 doi "https://doi.org/10.1016/j.regpep.2004.03.010" @default.
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