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. 2018 Apr:113:35-41.
doi: 10.1016/j.envint.2018.01.012. Epub 2018 Jan 28.

Pregnancy urinary bisphenol-A concentrations and glucose levels across BMI categories

Andrea Bellavia  1 , David E Cantonwine  2 , John D Meeker  3 , Russ Hauser  4 , Ellen W Seely  5 , Thomas F McElrath  2 , Tamarra James-Todd  6
Affiliations

Pregnancy urinary bisphenol-A concentrations and glucose levels across BMI categories

Andrea Bellavia et al. Environ Int. 2018 Apr.

Abstract

Background: Pregnancy exposure to bisphenol-A (BPA) may be associated with gestational diabetes (GDM), but evidence from human studies is limited. Moreover, adiposity is associated with both higher BPA concentrations and GDM risk, and may act as a confounder or an effect modifier of the association.

Methods: We included 350 term births from the Lifecodes pregnancy cohort (Boston, MA), who had 1st and 2nd trimester measures of urinary BPA concentrations available. BPA measures were SG-adjusted and categorized into quartiles (Q). Multivariable-adjusted linear regressions were used to determine the association between BPA, at both 1st and 2nd trimester, and glucose, in the overall population and by categories of 1st trimester BMI.

Results: No clear associations were seen between BPA and glucose levels in the overall population. From stratified analyses there was suggestive evidence of effect modification by maternal 1st trimester BMI, with significant associations observed among obese/overweight participants (1st trimester BPA concentrations for Q3 vs Q1: adj.β = 14.1 mg/dL; 95% CI: 1.5, 26.6) (2nd trimester BPA concentrations for Q2 vs Q1: adj. β = 16.9 mg/dL; 95% CI: 2.6, 31.2).

Conclusion: No associations were found between BPA and glucose levels in the overall population. However, moderately high BPA concentrations were associated with increased glucose levels among overweight/obese women-a subgroup at high-risk of elevated glucose levels in pregnancy.

Keywords: Bisphenol-A; Body mass index; Gestational diabetes; Glucose; Pregnancy.

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Conflict of interest statement

Conflict of interest: The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Multivariable adjusted differences in 1st trimester BMI as a function of 1st trimester bisphenol-A concentration. The median BPA concentration is taken as reference, and dashed lines represent 95% CI. Adjusted for maternal age, education, race/ethnicity, alcohol consumption, smoking status. The histogram represents the distribution of 1st trimester BPA in the study population.
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