title: Resveratrol opposite effects on rat tissue lipoperoxidation: pro-oxidant during day-time and antioxidant at night.
abstract: We investigated the dosing-time dependency of acute resveratrol administration on lipoperoxidation level found in the heart, liver and kidney of male rats synchronized with a 12-h dark-light cycle. Resveratrol was administered by the i.p. route at the middle of the dark (6 h after dark onset, HADO) or light span (18 HADO) and thiobarbituric acid reactive species (TBARS) measured 4 h later at 10 and 22 HADO, respectively. Basal TBARS levels in the three organs were higher during the night span when compared to day span. Resveratrol effect on tissues TBARS was also dosing-time dependent. When administered during the dark phase, resveratrol decreased TBARS levels whereas at the light span, the polyphenol increased TBARS in the three organs. Resveratrol behaved as an antioxidant during the dark span and as a pro-oxidant during the light span. These data suggested a day/night rhythm in basal lipoperoxidation and in resveratrol antioxidant effect.
authors.affiliation: Laboratoire de Biochimie Médicale et Biologie Moléculaire, INSERM U 13, Faculté de Médecine Pierre et Marie Curie, Paris, France.
authors.forename: Wafa
authors.initials: W
authors.lastname: Gadacha
authors.forename: Mossadok
authors.initials: M
authors.lastname: Ben-Attia
authors.forename: Dominique
authors.initials: D
authors.lastname: Bonnefont-Rousselot
authors.forename: Ezzedine
authors.initials: E
authors.lastname: Aouani
authors.forename: Néziha
authors.initials: N
authors.lastname: Ghanem-Boughanmi
authors.forename: Yvan
authors.initials: Y
authors.lastname: Touitou
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D002940:Circadian Rhythm; D006321:Heart / Q000187:drug effects; D007668:Kidney / Q000187:drug effects / Q000378:metabolism; D008027:Light; D015227:Lipid Peroxidation / Q000187:drug effects*; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D009206:Myocardium / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D017382:Reactive Oxygen Species / Q000494:pharmacology*; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
chemical_list: D000975:Antioxidants; D017382:Reactive Oxygen Species; D013267:Stilbenes; D017392:Thiobarbituric Acid Reactive Substances; D000077185:Resveratrol