Cited by 34Neurogenesis and neuroplasticity mechanismsPharmacological Effects and Toxicity StudiesGlioma Diagnosis and Treatment

Valproic acid stimulates proliferation of glial precursors during cortical gliogenesis in developing rat

Lee, Hee Jae, Dreyfus, Cheryl, DiCicco‐Bloom, Emanuel·2016·Developmental Neurobiology

Abstract

Valproic acid (VPA) is a neurotherapeutic drug prescribed for seizures, bipolar disorder, and migraine, including women of reproductive age. VPA is a well‐known teratogen that produces congenital malformations in many organs including the nervous system, as well as later neurodevelopmental disorders, including mental retardation and autism. In developing brain, few studies have examined VPA effects on glial cells, particularly astrocytes. To investigate effects on primary glial precursors, we developed new cell culture and in vivo models using frontal cerebral cortex of postnatal day (P2) rat. In vitro, VPA exposure elicited dose‐dependent, biphasic effects on DNA synthesis and proliferation. In vivo VPA (300 mg/kg) exposure from P2 to P4 increased both DNA synthesis and cell proliferation, affecting primarily astrocyte precursors, as >75% of mitotic cells expressed brain lipid‐binding protein. Significantly, the consequence of early VPA exposure was increased astrocytes, as both S100‐β+ cells and glial fibrillary acidic protein were increased in adolescent brain. Molecularly, VPA served as an HDAC inhibitor in vitro and in vivo as enhanced proliferation was accompanied by increased histone acetylation, whereas it elicited changes in culture in cell‐cycle regulators, including cyclin D1 and E, and cyclin‐dependent kinase (CDK) inhibitors, p21 and p27. Collectively, these data suggest clinically relevant VPA exposures stimulate glial precursor proliferation, though at higher doses can elicit inhibition through differential regulation of CDK inhibitors. Because changes in glial cell functions are proposed as mechanisms contributing to neuropsychiatric disorders, these observations suggest that VPA teratogenic actions may be mediated through changes in astrocyte generation during development. © 2015 Wiley Periodicals, Inc. Develop Neurobiol 76: 780–798, 2016

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Crossref · 10.1002/dneu.22359

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  • Increased glial proliferation and altered astrocyte and microglial densities are observed in the hippocampus and cerebellum following VPA exposure.

    “Increased glial proliferation [213] and altered astrocyte and microglial densities are observed in the hippocampus and cerebellum following VPA exposure [189].”

    From Autism spectrum disorder: neuropathology and animal models (2017) · cites this paper as [213]

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Authors
Lee, H. J., Dreyfus, C., & DiCicco‐Bloom, E.
Affiliations
  • Rutgers, The State University of New Jersey (US)
  • Department of Neuroscience and Cell Biology Rutgers Robert Wood Johnson Medical School, Rutgers, the State University of New Jersey Piscataway New Jersey
Venue
Developmental Neurobiology
Publisher
Wiley
Published
2015-11-17
Volume
76
Issue
7
Pages
780-798
ISSN
  • 1932-8451 (ISSN-L)
  • 1932-846X
OpenAlex
W1841913343
Cited by
34
References
97
Citations by year
2026: 2 · 2025: 7 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 4 · 2017: 4 · 2016: 1
FWCI
1.21
Type
journal article
Language
en
Open access
closed
Locations
  • Developmental Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Child Health and Human Development (HD23315‐22)
  • Kangwon National University
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmacological Effects and Toxicity Studies
  • Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
Keywords
valproic acid, teratogenicity, astrocyte precursors, histone deacetylase inhibition, histone acetylation, cell cycle regulation, cyclin-dependent kinase inhibitors, p21, p27, cyclin D1, cyclin E, brain lipid-binding protein, S100β, glial fibrillary acidic protein, postnatal rat brain, neurodevelopmental disorders
MeSH terms
Animals, Frontal Lobe, Neuroglia, Valproic Acid, Rats, Sprague-Dawley, Cell Culture Techniques, Cell Proliferation, Rats, Neurogenesis, Histone Deacetylase Inhibitors, Neural Stem Cells

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