Cited by 165Stress Responses and CortisolNeurogenesis and neuroplasticity mechanismsMemory and Neural Mechanisms

Differential effects of prenatal stress on the morphological maturation of hippocampal neurons

Fujioka, A., Fujioka, T., Ishida, Y., Maekawa, T., Nakamura, S.·2006·Neuroscience

Abstract

The present study was designed to clarify an intensity-dependent effect of prenatal stress on the morphological development of hippocampal neurons in rats. In addition, the involvement of receptors for glucocorticoids, i.e. mineralocorticoid receptors and glucocorticoid receptors, in stress-induced changes in the morphology of hippocampal neurons was examined by an in vitro pharmacological approach. The effects of mild prenatal stress on neurogenesis and long-term potentiation in the hippocampus were also investigated in adult offspring. Prenatal stress affected the morphological development of the hippocampus in an intensity-dependent manner. Short-lasting, mild prenatal stress enhanced neonatal neurogenesis and differentiation of processes of hippocampal neurons, whereas long-lasting, severe stress impaired their morphology. Mineralocorticoid receptor was found to mediate enhancement of neurogenesis and differentiation of processes of cultured hippocampal neurons. In contrast, glucocorticoid receptor was involved in the suppression of their morphology. Short-lasting, mild prenatal stress, which has previously been shown to enhance learning performance in adult offspring, facilitated neurogenesis and long-term potentiation in the adult hippocampus. These findings suggest that prenatal stress has enhancing and suppressing effects on the development of hippocampal neurons depending on intensity, and that mineralocorticoid receptors and glucocorticoid receptors contribute to stress-induced morphological changes.

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Crossref · 10.1016/j.neuroscience.2006.04.046

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Authors
Fujioka, A., Fujioka, T., Ishida, Y., Maekawa, T., & Nakamura, S.
Affiliations
Yamaguchi University (JP)
Corresponding author
  • Fujioka, T.
  • Nakamura, S.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2006
Volume
141
Issue
2
Pages
907-915
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2051951421
Cited by
165
References
33
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 9 · 2021: 7 · 2020: 6 · 2019: 3 · 2018: 4 · 2017: 15 · 2016: 9 · 2015: 14 · 2014: 18 · 2013: 8 · 2012: 12
FWCI
3.55
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
prenatal stress, hippocampal neurons, neuronal morphology, neurogenesis, mineralocorticoid receptor, glucocorticoid receptor, glucocorticoids, long-term potentiation, stress intensity, adult offspring, learning performance, hippocampal development
MeSH terms
Animals, Bromodeoxyuridine, Cell Differentiation, Cells, Cultured, Electric Stimulation, Embryo, Mammalian, Female, Glucocorticoids, Hippocampus, Immunohistochemistry, Microtubule-Associated Proteins, Neurons, Phosphopyruvate Hydratase, Pregnancy, Prenatal Exposure Delayed Effects, Stress, Physiological, Time Factors, Tubulin, Silver Staining, Rats, Sprague-Dawley, Long-Term Potentiation, Cell Size, Rats

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