PMID- 21090747 OWN - NLM STAT- MEDLINE DCOM- 20110210 LR - 20220321 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 44 IP - 24 DP - 2010 Dec 15 TI - Changes in concentrations of perfluorinated compounds, polybrominated diphenyl ethers, and polychlorinated biphenyls in Norwegian breast-milk during twelve months of lactation. PG - 9550-6 LID - 10.1021/es1021922 [doi] AB - At present, scientific knowledge on depuration rates of persistent organic pollutants (POPs) is limited and the previous assumptions of considerable reduction of body burdens through breast-feeding have recently been challenged. We therefore studied elimination rates of important POPs in nine Norwegian primiparous mothers and one mother breast-feeding her second child by collecting breast-milk samples (n = 70) monthly from about two weeks to up to twelve months after birth. Perfluorinated compounds (PFCs), polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD), and polychlorinated biphenyls (PCBs) were determined in the breast-milk samples. Linear mixed effect models were established for selected compounds, and significant decreases in the range of 1.2-4.7% in breast-milk concentrations per month were observed for a wide range of PCBs and PBDEs. For the first time, depuration rates for perfluorooctylsulfonate (PFOS) and perfluorooctanoic acid (PFOA) are presented, being 3.8 and 7.8% per month, respectively (p < 0.05). The relative amount of the branched PFOS isomers in the breast-milk samples was 18% on average (range 6-36%, RSD 30%). There were no significant differences in isomer pattern between the mothers, or changes during the lactation period. After a year of nursing the breast-milk concentrations of PFCs, PBDEs, and PCBs were reduced by 15-94%. FAU - Thomsen, Cathrine AU - Thomsen C AD - Department of Analytical Chemistry, Division of Environmental Medicine, Norwegian Institute of Public Health, PO Box 4404 Nydalen, NO-0403 Oslo, Norway. cathrine.thomsen@fhi.no FAU - Haug, Line S AU - Haug LS FAU - Stigum, Hein AU - Stigum H FAU - Froshaug, May AU - Froshaug M FAU - Broadwell, Sharon L AU - Broadwell SL FAU - Becher, Georg AU - Becher G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101123 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Alkanesulfonic Acids) RN - 0 (Caprylates) RN - 0 (Environmental Pollutants) RN - 0 (Fluorocarbons) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hydrocarbons, Fluorinated) RN - 947VD76D3L (perfluorooctanoic acid) RN - 9H2MAI21CL (perfluorooctane sulfonic acid) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM EIN - Environ Sci Technol. 2011 Apr 1;45(7):3192 MH - Adult MH - Alkanesulfonic Acids/metabolism MH - Breast Feeding MH - Caprylates/metabolism MH - Environmental Monitoring MH - Environmental Pollutants/*metabolism MH - Female MH - Fluorocarbons/metabolism MH - Halogenated Diphenyl Ethers/*metabolism MH - Humans MH - Hydrocarbons, Fluorinated/*metabolism MH - Maternal Exposure/statistics & numerical data MH - Milk, Human/*metabolism MH - Mothers MH - Norway MH - Polychlorinated Biphenyls/*metabolism EDAT- 2010/11/26 06:00 MHDA- 2011/02/11 06:00 CRDT- 2010/11/25 06:00 PHST- 2010/11/25 06:00 [entrez] PHST- 2010/11/26 06:00 [pubmed] PHST- 2011/02/11 06:00 [medline] AID - 10.1021/es1021922 [doi] PST - ppublish SO - Environ Sci Technol. 2010 Dec 15;44(24):9550-6. doi: 10.1021/es1021922. Epub 2010 Nov 23.