PMID- 22239965 OWN - NLM STAT- MEDLINE DCOM- 20120621 LR - 20120220 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 417-418 DP - 2012 Feb 15 TI - Transfer of PBDEs and chlorinated POPs from mother to pup during lactation in harp seals Phoca groenlandica. PG - 98-107 LID - 10.1016/j.scitotenv.2011.11.084 [doi] AB - Seven mother-pup pairs of harp seal (Phoca groenlandica) were sampled during the lactation season near Magdalen Islands, QC, Canada. The blubber and serum of pups and mothers as well as the milk of mothers were analyzed for polybrominated diphenyl ethers and several chlorinated persistent organic pollutants (POPs) to evaluate their transfer prior to weaning. Principal component analysis demonstrated significant variations in contaminant distribution patterns between seal tissues of mothers and pups. The selectivity in the transfer of POPs between mothers and pups appeared mainly driven by their log K(ow) (octanol/water partition coefficient). The most selective transfer step for the POPs examined occurred between the blubber and the serum of the mother. A novel approach to examine temporal changes of POP concentrations in tissues of seals which take into account the contamination of mothers was developed. A general decrease of POP concentrations in pup tissues throughout lactation may suggest a growth dilution. A concomitant rise of POP concentrations was observed in maternal blubber and serum and in milk as lactation progresses. The intensive offloading of contaminants via lactation constitutes a major but selective excretory route for reproductive female seals and also a significant route of exposure for suckling pup seals. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Frouin, Heloise AU - Frouin H AD - Institut National de la Recherche Scientifique - Institut Armand-Frappier, Laval, Quebec, Canada H7V 1B7. heloise.frouin@gmail.com FAU - Lebeuf, Michel AU - Lebeuf M FAU - Hammill, Mike AU - Hammill M FAU - Fournier, Michel AU - Fournier M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120110 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Environmental Pollutants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hydrocarbons, Chlorinated) SB - IM MH - Adipose Tissue/chemistry/*metabolism MH - Animals MH - Animals, Suckling MH - Biopsy MH - Environmental Pollutants/blood/*pharmacokinetics MH - Female MH - Halogenated Diphenyl Ethers/blood/*pharmacokinetics MH - Hydrocarbons, Chlorinated/blood/*pharmacokinetics MH - Lactation/*physiology MH - Milk/chemistry/*metabolism MH - Principal Component Analysis MH - Quebec MH - Seals, Earless/blood/*metabolism MH - Time Factors EDAT- 2012/01/14 06:00 MHDA- 2012/06/22 06:00 CRDT- 2012/01/14 06:00 PHST- 2011/09/01 00:00 [received] PHST- 2011/11/25 00:00 [revised] PHST- 2011/11/30 00:00 [accepted] PHST- 2012/01/14 06:00 [entrez] PHST- 2012/01/14 06:00 [pubmed] PHST- 2012/06/22 06:00 [medline] AID - S0048-9697(11)01402-1 [pii] AID - 10.1016/j.scitotenv.2011.11.084 [doi] PST - ppublish SO - Sci Total Environ. 2012 Feb 15;417-418:98-107. doi: 10.1016/j.scitotenv.2011.11.084. Epub 2012 Jan 10.