Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/12385
Title: Prenatal exposure to endocrine disrupting chemicals in relation to thyroid hormone levels in infants – a Dutch prospective cohort study
Authors: De Cock, M
De Boer, MR
Lamoree, M
Legler, J
Van de Bor, M
Keywords: Endocrine disruptors;Fetal basis of adult disease;Thyroxine;Prenatal exposure
Issue Date: 2014
Publisher: BioMed Central
Citation: Environmental Health,13, (1), pp. 106 - 106, (2014)
Abstract: Background: Endocrine disrupting chemicals (EDCs) present in the environment may disrupt thyroid hormones, which in early life are essential for brain development. Observational studies regarding this topic are still limited, however as the presence of chemicals in the environment is ubiquitous, further research is warranted. The objective of the current study was to assess the association between exposure markers of various EDCs and thyroxine (T4) levels in newborns in a mother-child cohort in the Netherlands. Methods: Exposure to dichlorodiphenyldichloroethylene (DDE), three di-2-ethylhexyl phthalate (DEHP) metabolites, hexachlorobenzene (HCB), polychlorinated biphenyl (PCB)-153, perfluorooctanesulfonic acid (PFOS), and perfluorooctanoic acid (PFOA) was determined in cord plasma or breast milk, and information on T4 levels in heel prick blood spots was obtained through the neonatal screening programme in the Netherlands. Linear regression models were composed to determine associations between each of the compounds and T4, which were stratified for gender and adjusted for a priori defined covariates. Results: Mean T4 level was 86.9 nmol/L (n = 83). Girls in the highest quartile of DDE and PFOA exposure showed an increased T4 level compared to the lowest quartile with both crude and fully adjusted models (DDE > 107.50 ng/L, +24.8 nmol/L, 95% CI 0.79, 48.75; PFOA > 1200 ng/L, +38.6 nmol/L, 95% CI 13.34, 63.83). In boys a lower T4 level was seen in the second quartile of exposure for both PFOS and PFOA, however after fully adjusting the models these associations were attenuated. No effects were observed for the other compounds. Conclusion: DDE and perfluorinated alkyl acids may be associated with T4 in a sex-specific manner. These results should however be interpreted with caution, due to the relatively small study population. More research is warranted, as studies on the role of environmental contaminants in this area are still limited.
URI: http://ehjournal.biomedcentral.com/articles/10.1186/1476-069X-13-106
http://bura.brunel.ac.uk/handle/2438/12385
DOI: http://dx.doi.org/10.1186/1476-069X-13-106
ISSN: 1476-069X
Appears in Collections:Dept of Life Sciences Research Papers

Files in This Item:
File Description SizeFormat 
Fulltext.pdf322.95 kBAdobe PDFView/Open


Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.