| Literature DB >> 26453834 |
Mariana B Alonso1, Maria Luisa Feo2, Cayo Corcellas2, Pablo Gago-Ferrero2, Carolina P Bertozzi3, Juliana Marigo3, Leonardo Flach4, Ana Carolina O Meirelles5, Vitor L Carvalho5, Alexandre F Azevedo6, João Paulo M Torres7, José Lailson-Brito6, Olaf Malm7, M Silvia Diaz-Cruz2, Ethel Eljarrat8, Damià Barceló2.
Abstract
Pyrethroids (PYR) and UV filters (UVF) were investigated in tissues of paired mother-fetus dolphins from Brazilian coast in order to investigate the possibility of maternal transfer of these emerging contaminants. Comparison of PYR and UVF concentrations in maternal and fetal blubber revealed Franciscana transferred efficiently both contaminants to fetuses (F/M > 1) and Guiana dolphin transferred efficiently PYR to fetuses (F/M > 1) different than UVF (F/M < 1). PYR and UVF concentrations in fetuses were the highest-ever reported in biota (up to 6640 and 11,530 ng/g lw, respectively). Muscle was the organ with the highest PYR and UVF concentrations (p < 0.001), suggesting that these two classes of emerging contaminants may have more affinity for proteins than for lipids. The high PYR and UVF concentrations found in fetuses demonstrate these compounds are efficiently transferred through placenta. This study is the first to report maternal transfer of pyrethroids and UV filters in marine mammals.Entities:
Keywords: Cetacean; Emerging pesticides; Fetus; Lactational uptake; Transplacental transfer; UV filters
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Year: 2015 PMID： 26453834 DOI： 10.1016/j.envpol.2015.09.039
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071