Cited by 62Effects and risks of endocrine disrupting chemicalsEstrogen and related hormone effectsSexual Differentiation and Disorders

Estrogen and environmental estrogenic chemicals exert developmental effects on rat hypothalamic neurons and glias

Yokosuka, Makoto, Ohtani-Kaneko, Ritsuko, Yamashita, Kayoko, Muraoka, Daisuke, Kuroda, Yoichiro, Watanabe, Chiho·2008·Toxicology in Vitro

Abstract

We investigated effects of 17beta-estradiol (E(2)) and endocrine disrupters, nonylphenol (NP) and bisphenol-A (BPA), focusing on the neuronal development in cultures of fetal rat hypothalamic cells. We applied different concentrations of E(2), NP or BPA to the cultured hypothalamic cells and observed their effects on dendritic and synaptic development by immunocytochemistry using anti-microtubule associated protein-2 (MAP2) and anti-synapsin I antibodies, respectively. Administration of E(2) for 7 days affected MAP2-positive area as well as synapsin I-positive area. NP and BPA also influenced neuronal developments. The significant increase both in MAP2- and synapsin I-positive areas was observed at 10 and/or 100 nM of them, while 1 microM of them reduced the positive areas. Synaptic densities calculated from synapsin I-positive area/MAP2-positive area were not constant among different doses of three chemicals, but increased at 10 and/or 100 nM and decreased at 1 microM. Furthermore, immunostaining of NP-treated cells with the antibody against glial fibrillary acidic protein (GFAP) revealed that glial development was similarly influenced by NP. Therefore, the present results demonstrated that not only E(2) but also the environmental estrogenic chemicals, NP and BPA, affect development of fetal rat hypothalamic cells in vitro.

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Crossref · 10.1016/j.tiv.2007.07.003

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Authors
Yokosuka, M., Ohtani-Kaneko, R., Yamashita, K., Muraoka, D., Kuroda, Y., & Watanabe, C.
Affiliations
  • Nippon Veterinary and Life Science University (JP)
  • St. Marianna University School of Medicine (JP)
  • The University of Tokyo (JP)
Venue
Toxicology in Vitro
Publisher
Elsevier BV
Published
2008-02
Volume
22
Issue
1
Pages
1-9
ISSN
0887-2333 (ISSN-L)
OpenAlex
W2085350360
Cited by
62
References
49
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 6 · 2018: 5 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 7 · 2013: 7 · 2012: 7
FWCI
2.52
Type
journal article
Language
en
Open access
closed
Locations
  • Toxicology in Vitro (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
Keywords
estradiol, endocrine disruptors, nonylphenol, bisphenol A, hypothalamic neurons, neuronal development, dendritic development, synaptic development, MAP2, synapsin I, glial fibrillary acidic protein, glial development, fetal brain, xenoestrogens
MeSH terms
Bisphenol A Compounds, Animals, Benzhydryl Compounds, Cells, Cultured, Dendrites, Dose-Response Relationship, Drug, Estradiol, Hypothalamus, Immunohistochemistry, Microtubule-Associated Proteins, Neuroglia, Neurons, Phenols, Synapses, Synapsins, Rats, Sprague-Dawley, Rats, Endocrine Disruptors

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