Antioxidant vitamins and cancer risk: is oxidative damage to DNA a relevant biomarker?

TY - JOUR

T1 - Antioxidant vitamins and cancer risk: is oxidative damage to DNA a relevant biomarker?

AU - Loft, Steffen

AU - Møller, Peter

AU - Cooke, Marcus S

AU - Rozalski, Rafal

AU - Olinski, Ryszard

PY - 2008

Y1 - 2008

N2 - Oxidative damage to DNA is regarded as an important step in carcinogenesis. These lesions may arise as a consequence of exposure to xenobiotics, but are also generated as a consequence of endogenous generation of oxidizing compounds. Measurements of oxidative damage to guanines, such as 8-oxo-7, 8-dihydroguanine (8-oxodG) are increasingly being regarded as reliable biomarkers of oxidative stress and they may have a predictive value of cancer risk, although this needs to be established independently in several cohort studies. A survey of intervention studies of the ingestion of antioxidant-containing foods or tablets of antioxidants indicate that about one-third of the studies reported a protective effect in terms of lower levels of oxidative damage to DNA in white blood cells or decreased urinary excretion of 8-oxodG. Although firm conclusions cannot be reached, there appears to be links between ingestion of antioxidants, oxidative damage to DNA, and risk of cancer.

AB - Oxidative damage to DNA is regarded as an important step in carcinogenesis. These lesions may arise as a consequence of exposure to xenobiotics, but are also generated as a consequence of endogenous generation of oxidizing compounds. Measurements of oxidative damage to guanines, such as 8-oxo-7, 8-dihydroguanine (8-oxodG) are increasingly being regarded as reliable biomarkers of oxidative stress and they may have a predictive value of cancer risk, although this needs to be established independently in several cohort studies. A survey of intervention studies of the ingestion of antioxidant-containing foods or tablets of antioxidants indicate that about one-third of the studies reported a protective effect in terms of lower levels of oxidative damage to DNA in white blood cells or decreased urinary excretion of 8-oxodG. Although firm conclusions cannot be reached, there appears to be links between ingestion of antioxidants, oxidative damage to DNA, and risk of cancer.

U2 - 10.1007/s00394-008-2004-0

DO - 10.1007/s00394-008-2004-0

M3 - Journal article

C2 - 18458832

SN - 1436-6207

VL - 47 Suppl 2

SP - 19

EP - 28

JO - European Journal of Nutrition

JF - European Journal of Nutrition

ER -