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Environ Int. 2018 Jun;115:79-88. doi: 10.1016/j.envint.2018.03.016. Epub 2018 Mar 20.

Associations of prenatal environmental phenol and phthalate biomarkers with respiratory and allergic diseases among children aged 6 and 7 years.

Author information

1
Departments of Environmental Health & Engineering and Epidemiology, Johns Hopkins University, Baltimore, MD, USA. Electronic address: jessie.buckley@jhu.edu.
2
Maryland Institute of Applied Environmental Health, School of Public Health, University of Maryland, College Park, USA; Pulmonary and Critical Care Division, Johns Hopkins School of Medicine, Baltimore, MD, USA.
3
Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, NY, New York, USA.
4
Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
5
Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Abstract

BACKGROUND:

Prenatal environmental phenol and phthalate exposures may alter immune or inflammatory responses leading to respiratory and allergic disease.

OBJECTIVES:

We estimated associations of prenatal environmental phenol and phthalate biomarkers with respiratory and allergic outcomes among children in the Mount Sinai Children's Environmental Health Study.

METHODS:

We quantified urinary biomarkers of benzophenone-3, bisphenol A, paradichlorobenzene (as 2,5-dichlorophenol), triclosan, and 10 phthalate metabolites in third trimester maternal samples and assessed asthma, wheeze, and atopic skin conditions via parent questionnaires at ages 6 and 7 years (n = 164 children with 240 observations). We used logistic regression to estimate covariate-adjusted odds ratios (ORs) and 95% confidence intervals (CIs) per standard deviation difference in natural log biomarker concentrations and examined effect measure modification by child's sex.

RESULTS:

Associations of prenatal 2,5-dichlorophenol (all outcomes) and bisphenol A (asthma outcomes) were modified by child's sex, with increased odds of outcomes among boys but not girls. Among boys, ORs for asthma diagnosis per standard deviation difference in biomarker concentration were 3.00 (95% CI: 1.36, 6.59) for 2,5-dichlorophenol and 3.04 (95% CI: 1.38, 6.68) for bisphenol A. Wheeze in the past 12 months was inversely associated with low molecular weight phthalate metabolites among girls only (OR: 0.27, 95% CI: 0.13, 0.59) and with benzophenone-3 among all children (OR: 0.65, 95% CI: 0.44, 0.96).

CONCLUSIONS:

Prenatal bisphenol A and paradichlorobenzene exposures were associated with pediatric respiratory outcomes among boys. Future studies may shed light on biological mechanisms and potential sexually-dimorphic effects of select phenols and phthalates on respiratory disease development.

KEYWORDS:

Asthma; Bisphenol A; Children's health; Endocrine disruption; Environmental phenols; Phthalates

PMID:
29550712
PMCID:
PMC5970077
[Available on 2019-06-01]
DOI:
10.1016/j.envint.2018.03.016

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