title: Profiling oxidative DNA damage: effects of antioxidants.
abstract: The goal of this research was to determine whether antioxidant usage could be correlated with changes in DNA damage levels. Liquid Chromatography-tandem Mass Spectrometry (LC-MS/MS) was used to simultaneously measure five different oxidatively-induced base modifications in the DNA of WBC. Measurements of the five modifications were made before and after an 8-week trial during which participants took the SU.VI.MAX supplement. Levels of the five DNA modifications were compared among different groupings: users versus non-users of antioxidant supplements, before versus after the supplement intervention and men versus women. The statistical significance of differences between groups was most significant for pyrimidine base modifications and the observed trends reflect trends reported in epidemiological studies of antioxidant usage. A combination of modifications derived from pyrimidine bases is suggested as a superior indicator of oxidative stress.
authors: Departments of Cell Stress Biology, Dermatology and Cancer Prevention, Roswell Park Cancer Institute, Buffalo, NY, USA. harold.box@roswellpark.org
authors: Harold C
authors: HC
authors: Box
authors: Helen B
authors: HB
authors: Patrzyc
authors: Edwin E
authors: EE
authors: Budzinski
authors: Jean B
authors: JB
authors: Dawidzik
authors: Harold G
authors: HG
authors: Freund
authors: Nathalie C
authors: NC
authors: Zeitouni
authors: Martin C
authors: MC
authors: Mahoney
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000975:Antioxidants / Q000494:pharmacology*; D002853:Chromatography, Liquid / Q000379:methods; D004247:DNA / Q000187:drug effects* / Q000378:metabolism; D004249:DNA Damage / Q000187:drug effects*; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress / Q000187:drug effects / Q000235:genetics; D011446:Prospective Studies; D053719:Tandem Mass Spectrometry / Q000379:methods
chemical_list: D000975:Antioxidants; D004247:DNA