Effect of dietary olive oil on urinary etheno-DNA adducts excretion

Publication: Research - peer-reviewJournal article – Annual report year: 2006

Not written here

View graph of relations

A significant protective effect against cancer and coronary heart disease has been attributed to the Mediterranean diet, in which olive oil is the main source of fat. Dietary antioxidants, as phenolic compounds from virgin olive oil, are candidates for reducing cancer risk by minimizing oxidatively derived DNA damage. Etheno-DNA adducts are formed as a result of oxidative stress and lipid peroxidation. To evaluate whether phenol-rich virgin olive oil influences urinary excretion of the etheno-DNA adducts, epsilon Ade, epsilon dA, and epsilon dC as markers of oxidative stress, a randomized, double-blinded, crossover trial with three intervention periods was conducted in 28 healthy men. Each intervention was of 3 weeks' duration and separated by 2-week washout periods. Twenty-five milliliters of similar olive oils, but with differences in their phenolic content (from 2.7 to 366 mg/kg), were supplied to each subject per day. The urinary excretion of the DNA adducts was assayed by LC-MS/MS in samples before and after consumption of high phenolic content olive oil (virgin). The 24-h excretion rate did not differ significantly between baseline and after virgin olive oil consumption: eAde, 105.5 +/- 40.8 vs 116.4 +/- 53.4 pmol epsilon Ade/24 h (p = 0.21); epsilon dA, 37.9 +/- 24.8 vs 37.6 17 +/- 24.2 pmol epsilon dA/24 h (p = 0.93); and epsilon dC, 218.7 +/- 157.2 vs 193.5 +/- 64.7 pmol epsilon dC/24 h (p = 0.37). Multiple regression analysis showed a significant association between etheno-DNA adduct excretion rate and the dietary intake of linoleic acid (C 18:2, (omega-6) in healthy men. Consumption of 25 ml per day of phenol-rich virgin olive oil for 3 weeks did not modify to a significant degree the urinary excretion of etheno-DNA adducts in 28 healthy volunteers. (c) 2006 Elsevier Inc. All rights reserved.
Original languageEnglish
JournalFREE RADICAL BIOLOGY AND MEDICINE
Publication date2006
Volume41
Journal number7
Pages1133-1138
ISSN0891-5849
StatePublished
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 3279213