Cited by 211Neurogenesis and neuroplasticity mechanismsStress Responses and CortisolMaternal Mental Health During Pregnancy and Postpartum

Postnatal stimulation of the pups counteracts prenatal stress-induced deficits in hippocampal neurogenesis

Lemaire, Valerie, Lamarque, Stephanie, Le Moal, Michel, Piazza, Pier-Vincenzo, Abrous, Djoher Nora·2006·Biological Psychiatry

Abstract

Background Prenatal stress constitutes a developmental risk factor for later psychopathology. The behavioral disorders are sustained by neurobiological alterations including long-term reduction of hippocampal neurogenesis; its deregulation has been involved in cognitive impairments, mood disorders and addiction. A major goal is to define periods in development and strategies for intervening to prevent the effects of early stressful events. We investigated the ability of a postnatal infantile stimulation to prevent prenatal stress-induced alteration in hippocampal neurogenesis.Methods The influence of postnatal handling on prenatal stress-induced changes in hippocampal neurogenesis was examined in 4 and 26 month-old male rats. Three distinct phases of the neurogenesis were studied: proliferation, survival and neuronal differentiation.Results Prenatal stress reduced hippocampal cell proliferation all throughout life. Furthermore, the survival rate of newborn cells, the number of immature neurons and the number of differentiated new neurons were reduced in young and old prenatally-stressed rats. All those deleterious effects were counteracted by neonatal handling.Conclusions These data show that finer aspects of brain shaping can be rewired by environmental influences occurring at sensitive phase of development. They also suggest that infantile stimulation may reverse the appearance of behavioral disorders induced by early life stress.

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Crossref · 10.1016/j.biopsych.2005.11.009

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Authors
Lemaire, V., Lamarque, S., Le Moal, M., Piazza, P.-V., & Abrous, D. N.
Affiliations
Université de Bordeaux (FR)
Corresponding author
Abrous, Djoher Nora
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2006-05
Volume
59
Issue
9
Pages
786-792
ISSN
0006-3223 (ISSN-L)
OpenAlex
W1975498998
Cited by
211
References
57
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 3 · 2022: 5 · 2021: 11 · 2020: 5 · 2019: 9 · 2018: 5 · 2017: 11 · 2016: 9 · 2015: 8 · 2014: 28 · 2013: 11 · 2012: 16
FWCI
4.89
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
Keywords
prenatal stress, hippocampal neurogenesis, postnatal handling, early life stress, neuronal proliferation, neuronal survival, neuronal differentiation, developmental risk factors, behavioral disorders, environmental interventions, rats
MeSH terms
Doublecortin Domain Proteins, Age Factors, Analysis of Variance, Animals, Bromodeoxyuridine, Cell Count, Cell Survival, Female, Handling, Psychological, Hippocampus, Immunohistochemistry, Male, Microtubule-Associated Proteins, Neurons, Neuropeptides, Phosphopyruvate Hydratase, Pregnancy, Prenatal Exposure Delayed Effects, Random Allocation, Sialic Acids, Stress, Psychological, Rats, Wistar, Ki-67 Antigen, Organogenesis, Neural Cell Adhesion Molecule L1, Cell Proliferation, Rats

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