title: Higher leukocyte 8-oxo-7,8-dihydro-2'-deoxyguanosine and lower plasma ascorbate in aging humans?
abstract: Is oxidative damage of DNA responsible for physiological changes associated with aging? The authors note a positive correlation between the age of human subjects with the level of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) in leukocyte DNA. The levels of urinary 8-oxo-7,8-dihydroguanine and 8-oxodG followed the same pattern of correlation. Age-dependent decline in the concentration of plasma vitamin C was also evident. These interesting observations in humans point towards the need to scrutinize in detail the role of oxidative DNA damage and compromised antioxidant defense systems in age-related physiological disorders.
authors.affiliation: Department of Clinical Biochemistry, Nicolaus Copernicus University, Collegium Medicum in Bydgoszcz, Karlowicza, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Siomek
authors.forename: Daniel
authors.initials: D
authors.lastname: Gackowski
authors.forename: Rafal
authors.initials: R
authors.lastname: Rozalski
authors.forename: Tomasz
authors.initials: T
authors.lastname: Dziaman
authors.forename: Anna
authors.initials: A
authors.lastname: Szpila
authors.forename: Jolanta
authors.initials: J
authors.lastname: Guz
authors.forename: Ryszard
authors.initials: R
authors.lastname: Olinski
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D001205:Ascorbic Acid / Q000097:blood*; D004249:DNA Damage; D003849:Deoxyguanosine / Q000031:analogs & derivatives* / Q000097:blood / Q000652:urine; D006801:Humans; D007962:Leukocytes / Q000378:metabolism*; D008875:Middle Aged; D018384:Oxidative Stress
chemical_list: D000080242:8-Hydroxy-2'-Deoxyguanosine; D003849:Deoxyguanosine; D001205:Ascorbic Acid