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Title: Exposure to persistent organic pollutants in utero and related maternal characteristics on birth outcomes: A multivariate data analysis approach
Authors: Tan, J.
Loganath, A. 
Chong, Y.S. 
Obbard, J.P. 
Keywords: Influential factor
Partial least-squares discriminant analysis
Partial least-squares regression
Polybrominated diphenyl ether
Issue Date: 2009
Citation: Tan, J., Loganath, A., Chong, Y.S., Obbard, J.P. (2009). Exposure to persistent organic pollutants in utero and related maternal characteristics on birth outcomes: A multivariate data analysis approach. Chemosphere 74 (3) : 428-433. ScholarBank@NUS Repository.
Abstract: Persistent organic pollutants (POPs) have the capacity to pass through the placental barrier and into the fetal blood stream, and pose health risks to fetuses and neonates who are believed to be more vulnerable to the effects of environmental pollutants. In this study, the prevalence of POPs, including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs), were determined in 41 cord blood samples collected during the year 2006 in Singapore. The effects of these xenobiotics and the maternal characteristics on fetal growth and development were explored using multivariate data analysis (MVA) techniques, including partial least-squares regression (PLSR) and discriminant analysis (PLS-DA). POPs were found in all cord blood samples, corroborating the transplacental transfer (TPT) of these xenobiotics. Chlordanes and PCBs were observed to have adverse effects on fetal growth (i.e. birth weight, length, head circumference) and health (as indicated by Apgar scores), indicating the chemical exposure in utero could also be deemed as an influential factor on fetal growth, even at the normal doses in general population. Maternal height, weight, ethnicity, dietary habits and lifestyle were also the determinants for the neonatal variables. Exposure to POPs may alter maternal hormone levels, which could regulate the offspring sex. Trans-chlordane, p,p′-DDE, p,p′-DDT and PCB 138 and 158 were speculated as testosterone triggers which lead to more baby boys, while the effects of β-HCH and PCB 180 were opposite. © 2008 Elsevier Ltd. All rights reserved.
Source Title: Chemosphere
ISSN: 00456535
DOI: 10.1016/j.chemosphere.2008.09.045
Appears in Collections:Staff Publications

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