PMID- 20692313 OWN - NLM STAT- MEDLINE DCOM- 20110125 LR - 20220317 IS - 1873-6351 (Electronic) IS - 0278-6915 (Linking) VI - 48 IP - 11 DP - 2010 Nov TI - Polychlorinated biphenyls (PCBs) contamination and aryl hydrocarbon receptor (AhR) agonist activity of Omega-3 polyunsaturated fatty acid supplements: implications for daily intake of dioxins and PCBs. PG - 3093-7 LID - 10.1016/j.fct.2010.07.051 [doi] AB - Omega-3 polyunsaturated fatty acid (n-3 PUFA) rich oils derived primarily from fish are frequently consumed as supplements. Due to the tendency of persistent organic pollutants (POPs) to accumulate in exposed organisms, n-3 PUFA supplements can contain sufficient POPs to present a risk to consumers. Here we investigated PCB concentrations and aryl hydrocarbon receptor (AhR) agonist activity in 17 n-3 PUFA supplements available in Canada. PCBs ranged from <0.8 to 793 ng g(-1) oil, with salmon- and seal-derived products yielding the highest values. AhR agonist activity from a reporter gene assay ranged from 1.3 to 72.2 pg TEQ g(-1) oil, with salmon and tuna yielding the highest values. When consumed at the recommended doses and as a supplement to the average Canadian diet, seal-derived oil can contribute to exceedance of the tolerable daily intake of 20 ng PCBs kg-BW(-1)day(-1), and salmon-, tuna-, and sea herring-derived oils can contribute to exceedance of the tolerable daily intake limit of 2.3 pg TEQ kg-BW(-1)day(-1). The beneficial properties of fish and n-3 PUFA supplements, and the results of this study suggest that it is prudent to consume supplements derived from small, cold-water fatty fish. Further research will be necessary to draw firm conclusions. CI - Crown Copyright (c) 2010. Published by Elsevier Ltd. All rights reserved. FAU - Bourdon, J A AU - Bourdon JA AD - Mechanistic Studies Division, Environmental Health Sciences and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, Canada. julie_bourdon@hc-sc.gc.ca FAU - Bazinet, T M AU - Bazinet TM FAU - Arnason, T T AU - Arnason TT FAU - Kimpe, L E AU - Kimpe LE FAU - Blais, J M AU - Blais JM FAU - White, P A AU - White PA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100806 PL - England TA - Food Chem Toxicol JT - Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association JID - 8207483 RN - 0 (AHR protein, human) RN - 0 (Basic Helix-Loop-Helix Transcription Factors) RN - 0 (Dioxins) RN - 0 (Environmental Pollutants) RN - 0 (Fatty Acids, Omega-3) RN - 0 (Fish Oils) RN - 0 (Receptors, Aryl Hydrocarbon) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - EC 1.13.12.- (Luciferases) SB - IM MH - Animals MH - Basic Helix-Loop-Helix Transcription Factors/*agonists MH - Cell Line, Transformed MH - Chromatography, Gas MH - Chromatography, Gel MH - Dietary Supplements/*adverse effects/analysis MH - Dioxins/*analysis/toxicity MH - Environmental Pollutants/*analysis/toxicity MH - Fatty Acids, Omega-3/*administration & dosage MH - Fish Oils/chemistry MH - Food Contamination/*analysis MH - Hepatocytes/drug effects/enzymology MH - Humans MH - Luciferases/metabolism MH - Maximum Allowable Concentration MH - Mice MH - Polychlorinated Biphenyls/*analysis/toxicity MH - Receptors, Aryl Hydrocarbon/*agonists EDAT- 2010/08/10 06:00 MHDA- 2011/01/28 06:00 CRDT- 2010/08/10 06:00 PHST- 2010/02/12 00:00 [received] PHST- 2010/07/06 00:00 [revised] PHST- 2010/07/31 00:00 [accepted] PHST- 2010/08/10 06:00 [entrez] PHST- 2010/08/10 06:00 [pubmed] PHST- 2011/01/28 06:00 [medline] AID - S0278-6915(10)00511-9 [pii] AID - 10.1016/j.fct.2010.07.051 [doi] PST - ppublish SO - Food Chem Toxicol. 2010 Nov;48(11):3093-7. doi: 10.1016/j.fct.2010.07.051. Epub 2010 Aug 6.