Bisphenol A concentrations in maternal breast milk and infant urine

  • K. Mendonca
  • R. Hauser
  • A. M. Calafat
  • T. E. Arbuckle
  • S. M. Duty
Original Article

Abstract

Purpose

The present report describes the distribution of breast milk and urinary free and total bisphenol A (BPA) concentrations, from 27 postpartum women and their 31 infants, and explores the influence of age, sex, and nutritional source on infant BPA urinary concentration.

Methods

Both free (unconjugated) and total (free plus conjugated) BPA concentrations from women’s breast milk samples and infants’ urine samples were measured by online solid-phase extraction coupled to high-performance liquid chromatography–isotope dilution tandem mass spectrometry. Descriptive statistics and nonparametric tests of group comparisons were conducted.

Results

Total BPA was detected in 93 % of urine samples in this healthy infant population aged 3–15 months who were without known environmental exposure to BPA [interquartile range (IQR) = 1.2–4.4 μg/L)]. Similarly, 75 % of the mothers’ breast milk samples had detectable concentrations of total BPA (IQR = 0.4–1.4 μg/L). The magnitude and frequency of detection of free BPA in the children’s urine and the mothers’ breast milk were much lower than the total concentrations.

Conclusions

Total BPA was detected in 93 % of this healthy infant population aged 3–15 months who are without known environmental exposure to BPA. Neither free nor total BPA urinary concentrations differed significantly by infant’s sex or by nutritional source (breast milk and/or formula) while age group was of borderline significance. There were no significant correlations between free or total BPA concentrations in mothers’ breast milk and their infants’ urine.

Keywords

Bisphenol A Breast milk Urine Infant Exposure 

Abbreviations

BPA

Bisphenol A

CDC

US Centers for Disease Control and Prevention

GM

Geometric mean

HPLC

High-performance liquid chromatography

LOD

Limit of detection

MGH

Massachusetts General Hospital

HSPH

Harvard School of Public Health

MS/MS

Tandem mass spectrometry

NTP

National Toxicology Program

QC

Quality control

WHO

World Health Organization

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • K. Mendonca
    • 1
  • R. Hauser
    • 2
  • A. M. Calafat
    • 3
  • T. E. Arbuckle
    • 4
  • S. M. Duty
    • 1
  1. 1.Nursing Programs, School of Nursing and Health SciencesSimmons CollegeBostonUSA
  2. 2.Department of Environmental HealthHarvard School of Public HealthBostonUSA
  3. 3.National Center for Environmental HealthCenters for Disease Control and PreventionAtlantaUSA
  4. 4.Population Studies DivisionHealthy Environments and Consumer Safety Branch Health CanadaOttawaCanada

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