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Impact of air pollution on oxidative DNA damage and lipid peroxidation in mothers and their newborns

A. Ambroz, V. Vlkova, P. Rossner, A. Rossnerova, V. Svecova, A. Milcova, J. Pulkrabova, J. Hajslova, M. Veleminsky, I. Solansky, RJ. Sram,

. 2016 ; 219 (6) : 545-56. [pub] 20160531

Jazyk angličtina Země Německo

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc17031644

Ambient air particulate matter (PM) represents a class of heterogeneous substances that form one component of air pollution. Oxidative stress has been implicated as an important action mechanism for PM on the human organism. Oxidative damage induced by reactive oxygen species (ROS) may affect any cellular macromolecule. The aim of our study was to investigate the impact of air pollution on oxidative DNA damage [8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG)] and lipid peroxidation [15-F2t-isoprostane (15-F2t-IsoP)] in the urine and blood from mothers and newborns from two localities with different levels of air pollution: Ceske Budejovice (CB), a locality with a clean air, and Karvina, a locality with high air pollution. The samples from normal deliveries (38-41 week+) of nonsmoking mothers and their newborns were collected in the summer and winter seasons. Higher PM2.5 concentrations were found in Karvina than in CB in the summer 2013 (mean±SD: 20.41±6.28 vs. 9.45±3.62μg/m(3), P<0.001), and in the winter 2014 (mean±SD: 53.67±19.76 vs. 27.96±12.34μg/m(3), P<0.001). We observed significant differences in 15-F2t-IsoP levels between the summer and winter seasons in Karvina for newborns (mean±SD: 64.24±26.75 vs. 104.26±38.18pg/ml plasma, respectively) (P<0.001). Levels of 8-oxodG differed only in the winter season between localities, they were significantly higher (P<0.001) in newborns from Karvina in comparison with CB (mean±SD: 5.70±2.94 vs. 4.23±1.51 nmol/mmol creatinine, respectively). The results of multivariate regression analysis in newborns from Karvina showed PM2.5 concentrations to be a significant predictor for 8-oxodG excretion, PM2.5 and B[a]P (benzo[a]pyrene) concentrations to be a significant predictor for 15-F2t-IsoP levels. The results of multivariate regression analysis in mothers showed PM2.5 concentrations to be a significant predictor of 8-oxodG levels.

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