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Prenatal Phenol and Phthalate Exposures and Birth Outcomes

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Wolff, Mary S., Engel, Stephanie M., Berkowitz, Gertrud S., Ye, Xiaoyun, Silva, Manori J., Zhu, Chenbo, Wetmur, James, Calafat, Antonia M.·2008·Environmental Health Perspectives

Abstract

BACKGROUND: Many phthalates and phenols are hormonally active and are suspected to alter the course of development. OBJECTIVE: We investigated prenatal exposures to phthalate and phenol metabolites and their associations with body size measures of the infants at birth. METHODS: We measured 5 phenol and 10 phthalate urinary metabolites in a multiethnic cohort of 404 women in New York City during their third trimester of pregnancy and recorded size of infants at birth. RESULTS: Median urinary concentrations were > 10 microg/L for 2 of 5 phenols and 6 of 10 phthalate monoester metabolites. Concentrations of low-molecular-weight phthalate monoesters (low-MWP) were approximately 5-fold greater than those of high-molecular-weight metabolites. Low-MWP metabolites had a positive association with gestational age [0.97 day gestational age per ln-biomarker; 95% confidence interval (CI), 0.07-1.9 days, multivariate adjusted] and with head circumference. Higher prenatal exposures to 2,5-dichlorophenol (2,5-DCP) predicted lower birth weight in boys (-210 g average birth weight difference between the third tertile and first tertile of 2,5-DCP; 95% CI, 71-348 g). Higher maternal benzophenone-3 (BP3) concentrations were associated with a similar decrease in birth weight among girls but with greater birth weight in boys. CONCLUSIONS: We observed a range of phthalate and phenol exposures during pregnancy in our population, but few were associated with birth size. The association of 2,5-DCP and BP3 with reduced or increased birth weight could be important in very early or small-size births. In addition, positive associations of urinary metabolites with some outcomes may be attributable partly to unresolved confounding with maternal anthropometric factors.

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Authors
Wolff, M. S., Engel, S. M., Berkowitz, G. S., Ye, X., Silva, M. J., Zhu, C., Wetmur, J., & Calafat, A. M.
Venue
Environmental Health Perspectives
Published
2008-08
Volume
116
Issue
8
Pages
1092-1097
ISSN
  • 0091-6765 (ISSN-L)
  • 1552-9924
OpenAlex
W2070823218
Cited by
580
References
0
FWCI
14.46
Type
journal article
Language
en
Open access
gold

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