PMID- 22610036 OWN - NLM STAT- MEDLINE DCOM- 20120815 LR - 20161125 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 168 DP - 2012 Sep TI - Accumulation of dioxins and induction of cytochrome P450 1A4/1A5 enzyme activities in common cormorants from Lake Biwa, Japan: temporal trends and validation of national regulation on dioxins emission. PG - 131-7 LID - 10.1016/j.envpol.2012.04.014 [doi] AB - To validate the outcome of the national regulation on dioxins emission implemented in 1999, this study investigated temporal trends of chlorinated dioxins and related compounds (DRCs) in liver of common cormorants (Phalacrocorax carbo) collected from Lake Biwa, Japan between 2001 and 2008, as a part of the "Survey on the State of Dioxins Accumulation in Wildlife" conducted by the Ministry of the Environment, Japan. We also measured a biomarker of DRCs exposure, the cytochrome P450 1A (CYP1A)-dependent O-dealkylation activity of alkoxyresorufins (AROD), including methoxy-, ethoxy-, pentoxy- and benzyloxy-resorufins in the samples over 2001-2007. Neither TEQ nor AROD activity showed any clear declining trend over the time period, although the emission of DRCs during the corresponding period was estimated to be apparently decreasing. Our data indicate that the concentration of recalcitrant DRCs in the cormorant during 2001-2008 was scarcely affected by the national regulation on dioxins emission. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Kubota, Akira AU - Kubota A AD - Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan. FAU - Watanabe, Michio X AU - Watanabe MX FAU - Kim, Eun-Young AU - Kim EY FAU - Yoneda, Kumiko AU - Yoneda K FAU - Tanabe, Shinsuke AU - Tanabe S FAU - Iwata, Hisato AU - Iwata H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120518 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Benzofurans) RN - 0 (Dibenzofurans, Polychlorinated) RN - 0 (Dioxins) RN - 0 (Environmental Pollutants) RN - 0 (Polychlorinated Dibenzodioxins) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - EC 1.- (methoxyresorufin-O-demethylase) RN - EC 1.14.14.1 (Aryl Hydrocarbon Hydroxylases) RN - EC 1.14.14.1 (Cytochrome P-450 CYP1A1) RN - EC 1.14.14.1 (Cytochrome P-450 CYP2B1) SB - IM MH - Animals MH - Aryl Hydrocarbon Hydroxylases/*metabolism MH - Benzofurans/metabolism/toxicity MH - Birds/*metabolism MH - Cytochrome P-450 CYP1A1/metabolism MH - Cytochrome P-450 CYP2B1/metabolism MH - Cytochrome P-450 Enzyme System/metabolism MH - Dibenzofurans, Polychlorinated MH - Dioxins/*metabolism/toxicity MH - Environmental Monitoring MH - Environmental Policy MH - Environmental Pollutants/*metabolism/toxicity MH - Environmental Pollution/prevention & control/statistics & numerical data MH - Enzyme Induction MH - Female MH - Japan MH - Lakes MH - Liver/enzymology MH - Male MH - Polychlorinated Biphenyls/metabolism/toxicity MH - Polychlorinated Dibenzodioxins/analogs & derivatives/metabolism/toxicity EDAT- 2012/05/23 06:00 MHDA- 2012/08/16 06:00 CRDT- 2012/05/22 06:00 PHST- 2012/02/29 00:00 [received] PHST- 2012/04/11 00:00 [revised] PHST- 2012/04/12 00:00 [accepted] PHST- 2012/05/22 06:00 [entrez] PHST- 2012/05/23 06:00 [pubmed] PHST- 2012/08/16 06:00 [medline] AID - S0269-7491(12)00196-0 [pii] AID - 10.1016/j.envpol.2012.04.014 [doi] PST - ppublish SO - Environ Pollut. 2012 Sep;168:131-7. doi: 10.1016/j.envpol.2012.04.014. Epub 2012 May 18.