The ubiquitous exposure to environmental contaminants in the US population, combined with the accumulating evidence of immediate and latent harm caused by in utero exposures, increases the need to better understand fetal exposure to chemicals during key stages of development. For most environmental chemicals, studies that examine the relationship between maternal and fetal exposure prior to birth are scarce, largely due to the challenges of collecting biological specimens, in particular umbilical cord blood and amniotic fluid. Meanwhile, questions about the degree to which chemicals cross the placenta, accumulate in the fetus and are metabolized by the pregnant woman and fetus remain unanswered. There is a critical need for human studies that are designed specifically to answer these questions. In this project we will generate unprecedented data on chemical exposures during the second trimester of pregnancy, when certain aspects of fetal development are particularly vulnerable to disruption. Specifically, we will 1) describe fetal and maternal exposure to BPA during the second trimester of pregnancy, and 2) explore the feasibility and accuracy of using maternal biological monitoring results to predict fetal exposure. To do this, we will initiate the collection of maternal and fetal biological specimens from women undergoing elective second-trimester pregnancy terminations. We will measure, analyze and compare levels of the chemical bisphenol A (BPA) in these samples, including a comparison of maternal and fetal metabolism of BPA. The data produced by this research project will fill key gaps in our understanding of fetal exposure to and capacity to detoxify BPA. These findings will inform and strengthen future studies of BPA effects on fetal development. In addition, with the successful implementation of this study, we will be poised to rapidly broaden the PEEC Formative Center to explore exposure to and effects of other important environmental contaminants.

Public Health Relevance

We will substantially advance understanding of human maternal and fetal exposures to Bisphenol A (BPA) by producing original data on BPA levels in pregnant women and fetal tissues and fetal capacity to metabolize and detoxify BPA. Insights gained about the differences in maternal and fetal exposures and the role of fetal metabolism will be applicable to other environmental chemicals with similar sources of exposure and that are detoxified through the same nathw/avs.

Agency
National Institute of Health (NIH)
Institute
National Institute of Environmental Health Sciences (NIEHS)
Type
Exploratory Grants (P20)
Project #
5P20ES018135-03
Application #
8378526
Study Section
Special Emphasis Panel (ZES1-LKB-G)
Project Start
Project End
2014-01-31
Budget Start
2012-02-01
Budget End
2013-01-31
Support Year
3
Fiscal Year
2012
Total Cost
$59,704
Indirect Cost
$15,473
Name
University of California San Francisco
Department
Type
DUNS #
094878337
City
San Francisco
State
CA
Country
United States
Zip Code
94143
Vandenberg, Laura N; Gerona, Roy R; Kannan, Kurunthachalam et al. (2016) Erratum to: A round robin approach to the analysis of bisphenol a (BPA) in human blood samples. Environ Health 15:43
Gerona, Roy R; Pan, Janet; Zota, Ami R et al. (2016) Direct measurement of Bisphenol A (BPA), BPA glucuronide and BPA sulfate in a diverse and low-income population of pregnant women reveals high exposure, with potential implications for previous exposure estimates: a cross-sectional study. Environ Health 15:50
Vandenberg, Laura N; Ã…gerstrand, Marlene; Beronius, Anna et al. (2016) A proposed framework for the systematic review and integrated assessment (SYRINA) of endocrine disrupting chemicals. Environ Health 15:74
Lam, Juleen; Koustas, Erica; Sutton, Patrice et al. (2014) The Navigation Guide - evidence-based medicine meets environmental health: integration of animal and human evidence for PFOA effects on fetal growth. Environ Health Perspect 122:1040-51
Koustas, Erica; Lam, Juleen; Sutton, Patrice et al. (2014) The Navigation Guide - evidence-based medicine meets environmental health: systematic review of nonhuman evidence for PFOA effects on fetal growth. Environ Health Perspect 122:1015-27
Woodruff, Tracey J; Sutton, Patrice (2014) The Navigation Guide systematic review methodology: a rigorous and transparent method for translating environmental health science into better health outcomes. Environ Health Perspect 122:1007-14
Vandenberg, Laura N; Gerona, Roy R; Kannan, Kurunthachalam et al. (2014) A round robin approach to the analysis of bisphenol A (BPA) in human blood samples. Environ Health 13:25
Gerona, Roy R; Woodruff, Tracey J; Dickenson, Carrie A et al. (2013) Bisphenol-A (BPA), BPA glucuronide, and BPA sulfate in midgestation umbilical cord serum in a northern and central California population. Environ Sci Technol 47:12477-85
Sutton, Patrice; Woodruff, Tracey J; Perron, Joanne et al. (2012) Toxic environmental chemicals: the role of reproductive health professionals in preventing harmful exposures. Am J Obstet Gynecol 207:164-73
Sutton, Patrice; Wallinga, David; Perron, Joanne et al. (2011) Reproductive health and the industrialized food system: a point of intervention for health policy. Health Aff (Millwood) 30:888-97

Showing the most recent 10 out of 11 publications