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EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain.

Publication ,  Journal Article
Rock, KD; Horman, B; Phillips, AL; McRitchie, SL; Watson, S; Deese-Spruill, J; Jima, D; Sumner, S; Stapleton, HM; Patisaul, HB
Published in: Endocrine connections
February 2018

Firemaster 550 (FM 550) is a flame retardant (FR) mixture that has become one of the most commonly used FRs in foam-based furniture and baby products. Human exposure to this commercial mixture, composed of brominated and organophosphate components, is widespread. We have repeatedly shown that developmental exposure can lead to sex-specific behavioral effects in rats. Accruing evidence of endocrine disruption and potential neurotoxicity has raised concerns regarding the neurodevelopmental effects of FM 550 exposure, but the specific mechanisms of action remains unclear. Additionally, we observed significant, and in some cases sex-specific, accumulation of FM 550 in placental tissue following gestational exposure. Because the placenta is an important source of hormones and neurotransmitters for the developing brain, it may be a critical target of toxicity to consider in the context of developmental neurotoxicity. Using a mixture of targeted and exploratory approaches, the goal of the present study was to identify possible mechanisms of action in the developing forebrain and placenta. Wistar rat dams were orally exposed to FM 550 (0, 300 or 1000 µg/day) for 10 days during gestation and placenta and fetal forebrain tissue collected for analysis. In placenta, evidence of endocrine, inflammatory and neurotransmitter signaling pathway disruption was identified. Notably, 5-HT turnover was reduced in placental tissue and fetal forebrains indicating that 5-HT signaling between the placenta and the embryonic brain may be disrupted. These findings demonstrate that environmental contaminants, like FM 550, have the potential to impact the developing brain by disrupting normal placental functions.

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Published In

Endocrine connections

DOI

EISSN

2049-3614

ISSN

2049-3614

Publication Date

February 2018

Volume

7

Issue

2

Start / End Page

305 / 324

Related Subject Headings

  • 3202 Clinical sciences
 

Citation

APA
Chicago
ICMJE
MLA
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Rock, K. D., Horman, B., Phillips, A. L., McRitchie, S. L., Watson, S., Deese-Spruill, J., … Patisaul, H. B. (2018). EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain. Endocrine Connections, 7(2), 305–324. https://doi.org/10.1530/ec-17-0373
Rock, Kylie D., Brian Horman, Allison L. Phillips, Susan L. McRitchie, Scott Watson, Jocelin Deese-Spruill, Dereje Jima, Susan Sumner, Heather M. Stapleton, and Heather B. Patisaul. “EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain.Endocrine Connections 7, no. 2 (February 2018): 305–24. https://doi.org/10.1530/ec-17-0373.
Rock KD, Horman B, Phillips AL, McRitchie SL, Watson S, Deese-Spruill J, et al. EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain. Endocrine connections. 2018 Feb;7(2):305–24.
Rock, Kylie D., et al. “EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain.Endocrine Connections, vol. 7, no. 2, Feb. 2018, pp. 305–24. Epmc, doi:10.1530/ec-17-0373.
Rock KD, Horman B, Phillips AL, McRitchie SL, Watson S, Deese-Spruill J, Jima D, Sumner S, Stapleton HM, Patisaul HB. EDC IMPACT: Molecular effects of developmental FM 550 exposure in Wistar rat placenta and fetal forebrain. Endocrine connections. 2018 Feb;7(2):305–324.
Journal cover image

Published In

Endocrine connections

DOI

EISSN

2049-3614

ISSN

2049-3614

Publication Date

February 2018

Volume

7

Issue

2

Start / End Page

305 / 324

Related Subject Headings

  • 3202 Clinical sciences