Bisphenol A alters the development of the rhesus monkey mammary gland

Andrew P Tharp; Maricel V Maffini; Patricia A Hunt; Catherine A VandeVoort; Carlos Sonnenschein; Ana M Soto

doi:10.1073/pnas.1120488109

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Bisphenol A alters the development of the rhesus monkey mammary gland

Journal article

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Bisphenol A alters the development of the rhesus monkey mammary gland

Andrew P Tharp, Maricel V Maffini, Patricia A Hunt, Catherine A VandeVoort, Carlos Sonnenschein and Ana M Soto

Proceedings of the National Academy of Sciences - PNAS, Vol.109(21), pp.8190-8195

05/22/2012

DOI: https://doi.org/10.1073/pnas.1120488109

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https://hdl.handle.net/2376/103410

PMCID: PMC3361442

PMID: 22566636

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Abstract

Biological Sciences

internal dose

endocrine disruptor

mammogenesis

morphogenesis

perinatal exposure

The xenoestrogen bisphenol A (BPA) used in the manufacturing of various plastics and resins for food packaging and consumer products has been shown to produce numerous endocrine and developmental effects in rodents. Exposure to low doses of BPA during fetal mammary gland development resulted in significant alterations in the gland’s morphology that varied from subtle ones observed during the exposure period to precancerous and cancerous lesions manifested in adulthood. This study assessed the effects of BPA on fetal mammary gland development in nonhuman primates. Pregnant rhesus monkeys were fed 400 μg of BPA per kg of body weight daily from gestational day 100 to term, which resulted in 0.68 ± 0.312 ng of unconjugated BPA per mL of maternal serum, a level comparable to that found in humans. At birth, the mammary glands of female offspring were removed for morphological analysis. Morphological parameters similar to those shown to be affected in rodents exposed prenatally to BPA were measured in whole-mounted glands; estrogen receptor (ER) α and β expression were assessed in paraffin sections. Student's t tests for equality of means were used to assess differences between exposed and unexposed groups. The density of mammary buds was significantly increased in BPA-exposed monkeys, and the overall development of their mammary gland was more advanced compared with unexposed monkeys. No significant differences were observed in ER expression. Altogether, gestational exposure to the estrogen-mimic BPA altered the developing mammary glands of female nonhuman primates in a comparable manner to that observed in rodents.

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Title: Bisphenol A alters the development of the rhesus monkey mammary gland
Creators: Andrew P Tharp - Department of Anatomy and Cellular Biology
Maricel V Maffini - Department of Anatomy and Cellular Biology
Patricia A Hunt - School of Molecular Biosciences and Center for Reproductive Biology
Catherine A VandeVoort - Department of Obstetrics and Gynecology and California National Primate Research Center
Carlos Sonnenschein - Department of Anatomy and Cellular Biology
Ana M Soto - Department of Anatomy and Cellular Biology
Publication Details: Proceedings of the National Academy of Sciences - PNAS, Vol.109(21), pp.8190-8195
Academic Unit: Molecular Biosciences, School of
Publisher: National Academy of Sciences
Identifiers: 99900546572701842
Language: English
Resource Type: Journal article