title: A battery of DNA effect biomarkers to evaluate environmental exposure of Flemish adolescents.
abstract: The present paper deals with the evaluation of a battery of genotoxicity biomarkers in healthy Flemish adolescents and their relation with common pollutants occurring in their life environment. DNA damage as reflected by the comet assay appeared to be most sensitive to ozone (partial r(2) = 0.102, p < 0.00001), and to a lesser extent to ortho-cresol (partial r(2) = 0.055; p = 0.001) and 1-hydroxy-pyrene (1-OH-pyrene, partial r(2) = 0.031; p = 0.013). 8-hydroxy-deoxyguanosine (8-OHdG) was only related to ortho-cresol (r(2) = 0.069; p < 0.007). Interestingly, the comet assay results and urinary 8-OHdG concentrations were positively correlated with a Pearson r = 0.21 (p = 0.003, N = 200). Logistic regression models revealed significant relations between chromatid breaks and 1-OH-pyrene (relative risk (RR): 1.58; p = 0.008), and t,t-muconic acid (RR: 1.71; p = 0.014). There was no correlation between micronucleus formation or occurrence of chromosomal or chromatid breaks on the one hand and comet or 8-OHdG results on the other hand. Thus, in this study the comet assay on whole blood samples and urine 8-OHdG measurements especially appeared sensitive biomarkers for assessing the genetic effects of environmental pollutants to which adolescents may be exposed.
authors.affiliation: Center of Expertise in Environmental Toxicology, Flemish Institute of Technological Research (VITO), Mol, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Koppen
authors.forename: G
authors.initials: G
authors.lastname: Verheyen
authors.forename: A
authors.initials: A
authors.lastname: Maes
authors.forename: U
authors.initials: U
authors.lastname: Van Gorp
authors.forename: G
authors.initials: G
authors.lastname: Schoeters
authors.forename: E Den
authors.initials: ED
authors.lastname: Hond
authors.forename: J
authors.initials: J
authors.lastname: Staessen
authors.forename: T
authors.initials: T
authors.lastname: Nawrot
authors.forename: H A
authors.initials: HA
authors.lastname: Roels
authors.forename: R
authors.initials: R
authors.lastname: Vlietinck
authors.forename: L
authors.initials: L
authors.lastname: Verschaeve
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D000293:Adolescent; D001530:Belgium; D015415:Biomarkers / Q000032:analysis* / Q000097:blood / Q000652:urine; D002869:Chromosome Aberrations; D020552:Comet Assay / Q000379:methods; D003404:Creatinine / Q000652:urine; D003408:Cresols / Q000737:chemistry / Q000652:urine; D004249:DNA Damage; D003849:Deoxyguanosine / Q000031:analogs & derivatives / Q000652:urine; D004781:Environmental Exposure / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis / Q000097:blood / Q000652:urine; D000431:Ethanol / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D048629:Micronuclei, Chromosome-Defective; D018977:Micronutrients / Q000097:blood; D011721:Pyrenes / Q000032:analysis; D012643:Selenium / Q000097:blood; D012737:Sex Factors; D013011:Sorbic Acid / Q000031:analogs & derivatives / Q000032:analysis; D014801:Vitamin A / Q000097:blood; D014810:Vitamin E / Q000097:blood
chemical_list: D015415:Biomarkers; D003408:Cresols; D004785:Environmental Pollutants; D018977:Micronutrients; D011721:Pyrenes; D014801:Vitamin A; D014810:Vitamin E; D000431:Ethanol; C005939:muconic acid; D000080242:8-Hydroxy-2'-Deoxyguanosine; D003404:Creatinine; D003849:Deoxyguanosine; D012643:Selenium; C033146:1-hydroxypyrene; D013011:Sorbic Acid; C034047:2-cresol