Contract Grant Sponsor: NIH.
Fetal Liver Bisphenol A Concentrations and Biotransformation Gene Expression Reveal Variable Exposure and Altered Capacity for Metabolism in Humans
Article first published online: 3 DEC 2012
© 2012 Wiley Periodicals, Inc.
Journal of Biochemical and Molecular Toxicology
Special Issue: Special Issue 2: National Institute of Environmental Health Sciences Outstanding New Environmental Scientist Program
Volume 27, Issue 2, pages 116–123, February 2013
How to Cite
Nahar, M. S., Liao, C., Kannan, K. and Dolinoy, D. C. (2013), Fetal Liver Bisphenol A Concentrations and Biotransformation Gene Expression Reveal Variable Exposure and Altered Capacity for Metabolism in Humans. J. Biochem. Mol. Toxicol., 27: 116–123. doi: 10.1002/jbt.21459
Contract Grant Number: ES017524.
Contract Grant Sponsor: University of Michigan National Institutes of Environmental Health Sciences (NIEHS) Core Center.
Contract Grant Number: P30 ES017885.
- Issue published online: 18 FEB 2013
- Article first published online: 3 DEC 2012
- Manuscript Accepted: 13 OCT 2012
- Manuscript Revised: 5 OCT 2012
- Manuscript Received: 21 JUN 2012
- University of Michigan National Institutes of Environmental Health Sciences (NIEHS) Core Center. Grant Number: ES017885
- Institutional Training. Grant Number: T32 ES007062
- Bisphenol A;
Widespread exposure to the endocrine active compound, bisphenol A (BPA), is well documented in humans. A growing body of literature suggests adverse health outcomes associated with varying ranges of exposure to BPA. In the current study, we measured the internal dose of free BPA and conjugated BPA and evaluated gene expression of biotransformation enzymes specific for BPA metabolism in 50 first- and second-trimester human fetal liver samples. Both free BPA and conjugated BPA concentrations varied widely, with free BPA exhibiting three times higher concentrations than conjugated BPA concentrations. As compared to gender-matched adult liver controls, UDP-glucuronyltransferase, sulfotransferase, and steroid sulfatase genes exhibited reduced expression whereas β-glucuronidase mRNA expression remained unchanged in the fetal tissues. This study provides evidence that there is considerable exposure to BPA during human pregnancy and that the capacity for BPA metabolism is altered in the human fetal liver. © 2012 Wiley Periodicals, Inc. J BiochemMol Toxicol 27:116-123, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/jbt.21459