PMID- 27050285 OWN - NLM STAT- MEDLINE DCOM- 20170608 LR - 20180404 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 50 IP - 9 DP - 2016 May 3 TI - Antioxidant Responses in Relation to Persistent Organic Pollutants and Metals in a Low- and a High-Exposure Population of Seabirds. PG - 4817-25 LID - 10.1021/acs.est.6b00478 [doi] AB - Oxidative stress occurs when there is an imbalance between the production of reactive oxygen species (ROS) and antioxidant defense. Exposure to pollutants may increase ROS and affect antioxidant levels, and the resulting oxidative stress may negatively affect both reproduction and survival. We measured concentrations of 18 persistent organic pollutants (POPs) and 9 toxic elements in blood, as well as total antioxidant capacity (TAC), total glutathione (tGSH), and carotenoids in plasma of Baltic and Arctic female common eiders (Somateria mollissima) (N = 54) at the end of their incubation-related fasting. The more polluted Baltic population had higher TAC and tGSH concentrations compared to the Arctic population. Carotenoid levels did not differ between populations. The effect of mixtures of pollutants on the antioxidants was assessed, and the summed molar blood concentrations of 14 POPs were positively related to TAC. There was no significant relationship between the analyzed pollutants and tGSH concentrations. The adaptive improvement of the antioxidant defense system in the Baltic population may be a consequence of increased oxidative stress. However, both increased oxidative stress and energy allocation toward antioxidant defense may have adverse consequences for Baltic eiders at the incubation stage, when energy resources reach an annual minimum due to incubation-related fasting. FAU - Fenstad, Anette A AU - Fenstad AA AD - Department of Biology, Realfagbygget, Norwegian University of Science and Technology (NTNU) , 7491 Trondheim, Norway. FAU - Moody, A John AU - Moody AJ AD - School of Biological Sciences, Plymouth University , Drake Circus, Plymouth, Devon PL4 8AA, U.K. FAU - Ost, Markus AU - Ost M AD - Environmental and Marine Biology, Faculty of Science and Engineering, Abo Akademy University , Artellerigatan 6, FI-20520 Turku, Finland. AD - Coastal Zone Research Team, Novia University of Applied Sciences (NOVIA) , Raseborgsvagen 9, FI-10600 Ekenas, Finland. FAU - Jaatinen, Kim AU - Jaatinen K AD - Coastal Zone Research Team, Novia University of Applied Sciences (NOVIA) , Raseborgsvagen 9, FI-10600 Ekenas, Finland. FAU - Bustnes, Jan O AU - Bustnes JO AD - Norwegian Institute for Nature Research (NINA), Framsenteret, Hjalmar Johansens gate 14, 9296 Tromso, Norway. FAU - Moe, Borge AU - Moe B AD - NINA, Hogskoleringen 9, 7034 Trondheim, Norway. FAU - Hanssen, Sveinn A AU - Hanssen SA AD - Norwegian Institute for Nature Research (NINA), Framsenteret, Hjalmar Johansens gate 14, 9296 Tromso, Norway. FAU - Gabrielsen, Kristin M AU - Gabrielsen KM AD - Department of Biology, Realfagbygget, Norwegian University of Science and Technology (NTNU) , 7491 Trondheim, Norway. FAU - Herzke, Dorte AU - Herzke D AD - Norwegian Institute for Air Research (NILU), Framsenteret, Hjalmar Johansens gate 14, 9296 Tromso, Norway. FAU - Lierhagen, Syverin AU - Lierhagen S AD - Department of Chemistry, Realfagbygget, Norwegian University of Science and Technology (NTNU) , 7491 Trondheim, Norway. FAU - Jenssen, Bjorn M AU - Jenssen BM AD - Department of Biology, Realfagbygget, Norwegian University of Science and Technology (NTNU) , 7491 Trondheim, Norway. FAU - Krokje, Ase AU - Krokje A AD - Department of Biology, Realfagbygget, Norwegian University of Science and Technology (NTNU) , 7491 Trondheim, Norway. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160414 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Antioxidants) RN - 0 (Metals) RN - 36-88-4 (Carotenoids) RN - GAN16C9B8O (Glutathione) SB - IM MH - Animals MH - Antioxidants/*pharmacology MH - Carotenoids/metabolism MH - Ducks MH - Glutathione/metabolism MH - Metals/*pharmacology MH - Oxidative Stress/drug effects EDAT- 2016/04/07 06:00 MHDA- 2017/06/09 06:00 CRDT- 2016/04/07 06:00 PHST- 2016/04/07 06:00 [entrez] PHST- 2016/04/07 06:00 [pubmed] PHST- 2017/06/09 06:00 [medline] AID - 10.1021/acs.est.6b00478 [doi] PST - ppublish SO - Environ Sci Technol. 2016 May 3;50(9):4817-25. doi: 10.1021/acs.est.6b00478. Epub 2016 Apr 14.