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Organophosphate Ester Flame Retardants and Plasticizers in Relation to Fetal Growth in the LIFECODES Fetal Growth Study.
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- Author(s): Bommarito, Paige A.1; Stevens, Danielle R.1; Welch, Barrett M.1,2; Ospina, Maria3; Calafat, Antonia M.3; Meeker, John D.4; Cantonwine, David E.5; McElrath, Thomas F.5; Ferguson, Kelly K.1
- Source:
Environmental Health Perspectives. Jul2024, Vol. 132 Issue 7, p077001-1-077001-11. 11p.- Subject Terms:
*Environmental health; *Organophosphorus compounds; *Plasticizers; Maternal exposure; Prenatal exposure delayed effects; Secondary analysis; Research funding; Fetal growth retardation; Body weight; Fetal ultrasonic imaging; Cephalometry; Descriptive statistics; Fireproofing agents; Longitudinal method; Waist circumference; Research; Fetal development; Confidence intervals; Data analysis software; Regression analysis - Source:
- Additional Information
- Abstract: BACKGROUND: Organophosphate esters (OPEs), used ubiquitously as flame retardants and plasticizers in consumer products, are suspected of having developmental toxicity. METHODS: In the LIFECODES Fetal Growth Study (2008–2018), an enriched case–cohort of 900 babies born at the small and large ends of the growth spectrum, we quantified OPE biomarkers in three urine samples per pregnant participant and abstracted ultrasound and delivery measures of fetal growth from medical records. We estimated associations between pregnancy-averaged log-transformed OPE biomarkers and repeated ultrasound measures of fetal growth using linear mixed-effects models, and delivery measures of fetal growth using linear (birth weight) and logistic (SGA and LGA) regression models. RESULTS: Most OPE biomarkers were positively associated with at least one ultrasound measure of fetal growth, but associations with delivery measures were largely null. For example, an interquartile range (IQR; 1.31 ng/mL) increase in bis(2-chloroethyl) phosphate concentration was associated with larger 푧-scores in head circumference [mean difference (difference): 0.09; 95% confidence interval (CI): 0.01, 0.17], abdominal circumference (difference: 0.10; 95% CI: 0.02, 0.18), femur length (difference: 0.11; 95% CI: 0.03, 0.19), and estimated fetal weight (difference: 0.13; 95% CI: 0.04, 0.22) but not birth weight (difference: 0.04; 95% CI: -0.08, 0.17). At delivery, an IQR (1.00 ng/mL) increase in diphenyl phosphate (DPHP) concentration was associated with an SGA birth (odds ratio: 1.46; 95% CI: 1.10, 1.94). CONCLUSIONS: In a large prospective cohort, gestational OPE exposures were associated with larger fetal size during pregnancy, but associations at delivery were null. DPHP concentrations were associated with heightened risk of an SGA birth. These findings suggest that OPE exposure may affect fetal development. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Environmental Health Perspectives is the property of National Institute of Environmental Health Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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