Journal
REDOX REPORT
Volume 14, Issue 4, Pages 154-158Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/135100009X466131
Keywords
resveratrol; lipoperoxidation; pro-oxidant; antioxidant; TBARS
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We investigated the dosing-time dependency of acute resveratrol administration on lipoperoxidation level found in the hearts 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 phases resveratrol decreased TBARS levels whereas at the light spans the polyphenol increased TBARS in the three organs. Resveratrol behaved as an antioxidant during the dark span and as a prot oxidant during the light span. These data suggested a day/night rhythm in basal lipoperoxidation and in resveratrol antioxidant effect.
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