title: Blood and liver lipid peroxide status after chronic ethanol administration in rats.
abstract: During the last decades a vast number of reports have aimed at elucidating the mechanisms behind alcohol-related organ injury, but the manner in which ethanol induces, e.g., liver damage is still an enigma. Increased oxidative stress has been put forward as one possible mechanism behind alcohol-related tissue damage. This paper focuses on the effect of chronic ethanol consumption on antioxidant status and lipid peroxide levels in blood and liver of rats. Alcohol was given twice daily in a total dose of 5 g ethanol/kg body wt. per day divided into two 2.5 g ethanol/kg body wt. doses as a 50% water solution, by gavage over 4 weeks. Chronic ethanol ingestion led neither to a significant change in lipid peroxide formation nor to a significant change in enzymatic antioxidant activities. Only concentrations of oxidized glutathione and of other non-enzymatic antioxidant such as vitamin E showed a tendency to decrease after alcohol application. The data presented could serve to emphasize no involvement of free radical-induced lipoperoxidation in the pathogenesis of ethanolic liver diseases.
authors.affiliation: Laboratoire de Biochimie C, Centre Hospitalier Universitaire de Grenoble, France.
authors.forename: C
authors.initials: C
authors.lastname: Coudray
authors.forename: M J
authors.initials: MJ
authors.lastname: Richard
authors.forename: H
authors.initials: H
authors.lastname: Faure
authors.forename: A
authors.initials: A
authors.lastname: Favier
mesh_terms: D000437:Alcoholism / Q000378:metabolism*; D000818:Animals; D000975:Antioxidants / Q000378:metabolism; D004032:Diet; D000431:Ethanol / Q000494:pharmacology*; D005609:Free Radicals / Q000378:metabolism; D005978:Glutathione / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects*; D008054:Lipid Peroxides / Q000097:blood / Q000378:metabolism; D008099:Liver / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000975:Antioxidants; D005609:Free Radicals; D008054:Lipid Peroxides; D000431:Ethanol; D005978:Glutathione