PMID- 20562055 OWN - NLM STAT- MEDLINE DCOM- 20110113 LR - 20211020 IS - 1552-9924 (Electronic) IS - 0091-6765 (Print) IS - 0091-6765 (Linking) VI - 118 IP - 10 DP - 2010 Oct TI - Allergy and sensitization during childhood associated with prenatal and lactational exposure to marine pollutants. PG - 1429-33 LID - 10.1289/ehp.1002289 [doi] AB - BACKGROUND: Breast-feeding may affect the risk of developing allergy during childhood and may also cause exposure to immunotoxicants, such as polychlorinated biphenyls (PCBs), which are of concern as marine pollutants in the Faroe Islands and the Arctic region. OBJECTIVES: The objective was to assess whether sensitization and development of allergic disease is associated with duration of breast-feeding and prenatal or postnatal exposures to PCBs and methylmercury. METHODS: A cohort of 656 singleton births was formed in the Faroe Islands during 1999-2001. Duration of breast-feeding and history of asthma and atopic dermatitis were recorded at clinical examinations at 5 and 7 years of age. PCB and mercury concentrations were determined in blood samples obtained at parturition and at follow-up. Serum from 464 children (71%) at 7 years of age was analyzed for total immunoglobulin E (IgE) and grass-specific IgE. RESULTS: The total IgE concentration in serum at 7 years of age was positively associated both with the concomitant serum PCB concentration and with the duration of breast-feeding. However, the effect only of the latter was substantially attenuated in a multivariate analysis. A raised grass-specific IgE concentration compatible with sensitization was positively associated with the duration of breast-feeding and inversely associated with prenatal methylmercury exposure. However, a history of asthma or atopic dermatitis was not associated with the duration of breast-feeding, although children with atopic dermatitis had lower prenatal PCB exposures than did nonallergic children. CONCLUSIONS: These findings suggest that developmental exposure to immunotoxicants may both increase and decrease the risk of allergic disease and that associations between breast-feeding and subsequent allergic disease in children may, at least in part, reflect lactational exposure to immunotoxic food contaminants. FAU - Grandjean, Philippe AU - Grandjean P AD - Institute of Public Health, University of Southern Denmark, Odense, Denmark. pgrand@hsph.harvard.edu FAU - Poulsen, Lars K AU - Poulsen LK FAU - Heilmann, Carsten AU - Heilmann C FAU - Steuerwald, Ulrike AU - Steuerwald U FAU - Weihe, Pal AU - Weihe P LA - eng GR - R01 ES012199/ES/NIEHS NIH HHS/United States GR - ES 12199/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20100601 PL - United States TA - Environ Health Perspect JT - Environmental health perspectives JID - 0330411 RN - 0 (Water Pollutants, Chemical) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Child MH - Child, Preschool MH - Cohort Studies MH - Denmark MH - Environmental Exposure MH - Female MH - Humans MH - Hypersensitivity/blood/*etiology MH - Immunoglobulin E/blood MH - *Lactation MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Seawater/*chemistry MH - Water Pollutants, Chemical/*toxicity PMC - PMC2957924 EDAT- 2010/06/22 06:00 MHDA- 2011/01/14 06:00 PMCR- 2010/10/01 CRDT- 2010/06/22 06:00 PHST- 2010/04/13 00:00 [received] PHST- 2010/06/01 00:00 [accepted] PHST- 2010/06/22 06:00 [entrez] PHST- 2010/06/22 06:00 [pubmed] PHST- 2011/01/14 06:00 [medline] PHST- 2010/10/01 00:00 [pmc-release] AID - ehp-118-1429 [pii] AID - 10.1289/ehp.1002289 [doi] PST - ppublish SO - Environ Health Perspect. 2010 Oct;118(10):1429-33. doi: 10.1289/ehp.1002289. Epub 2010 Jun 1.