11 research outputs found
Duration of exposure to environmental carcinogens affects DNA-adduct level in human lymphocytes
Abstract
Background and objective: An important issue in human biomonitoring is determining how exposure duration
affects the kinetics of molecular biomarkers. In this study we compare the influence of exposure variables
on DNA adducts.
Methods: DNA adducts were analysed by 32P-postlabelling in lympho/monocytes of 677 Caucasian
subjects.
Results: After correction for other variables, DNA adducts increased depending on the length of occupational
and smoke exposures. Higher DNA adducts were detected in workers with more than 14 years of exposure
than in workers with shorter exposures (RR = 1.19, p = 0.049) and in smokers with more than 10 years of
exposure than in smokers with shorter exposure (RR = 1.21, p <0.001).
Conclusions: Exposure length is the primary factor affecting DNA-adduct level in lympho/monocytes both
in smokers and in occupationally exposed subjects