Cited by 216Stress Responses and CortisolMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Maternal care determines rapid effects of stress mediators on synaptic plasticity in adult rat hippocampal dentate gyrus

Bagot, Rosemary C., van Hasselt, Felisa N., Champagne, Danielle L., Meaney, Michael J., Krugers, Harm J., Joëls, Marian·2009·Neurobiology of Learning and Memory

Abstract

Maternal care in the rat influences hippocampal development, synaptic plasticity and cognition. Previous studies, however, have examined animals under minimally stressful conditions. Here we tested the hypothesis that maternal care influences hippocampal function differently when this structure is exposed to corticosteroid and noradrenergic hormones, which are elevated during the early phase of a stress response. In the adult male offspring of Long-Evans dams characterised as high or low in maternal care (high LG and low LG) we (1) examined basal dendritic morphology in the dentate gyrus by Golgi staining; (2) investigated rapid modulation of in vitro long term-potentiation (LTP) in the dentate gyrus by glucocorticoid and beta-adrenergic stimulation; (3) examined hippocampal and amygdala-dependent learning under stress using contextual and cued fear conditioning. We found differences in hippocampal dentate gyrus morphology in adult offspring of high and low LG mothers, with less dendritic complexity in low LG offspring. Under basal conditions LTP was lower in slices from low compared with high LG offspring. Hippocampal LTP was rapidly increased by either corticosterone (100 nM) or isoproterenol (1.0 microM) in low LG offspring, suggesting improved dentate plasticity during stress. This was mirrored in hippocampal but not amygdala-dependent learning, as low LG offspring showed enhanced contextual but not cued fear conditioning. We suggest that decreased pup LG during postnatal life may be adaptive in high-threat environments, potentially enhancing hippocampal function in the offspring under conditions of adversity.

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Crossref · 10.1016/j.nlm.2009.03.004

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  • The physiological and morphological changes induced by low-quality maternal care in rats enhance learning and memory under stressful conditions.

    “they actually enhance learning and memory processes under stressful conditions”

    From The Adaptive Calibration Model of stress responsivity (2011) · cites this paper as Bagot et al., 2009

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Authors
Bagot, R. C., van Hasselt, F. N., Champagne, D. L., Meaney, M. J., Krugers, H. J., & Joëls, M.
Affiliations
  • Douglas Mental Health University Institute (CA)
  • Leiden University Medical Center (NL)
  • University of Amsterdam (NL)
Corresponding author
Bagot, Rosemary C.
Venue
Neurobiology of Learning and Memory
Publisher
Elsevier BV
Published
2009-10
Volume
92
Issue
3
Pages
292-300
ISSN
1074-7427 (ISSN-L)
OpenAlex
W2165533945
Cited by
216
References
66
Citations by year
2026: 5 · 2025: 3 · 2024: 6 · 2023: 10 · 2022: 7 · 2021: 5 · 2020: 12 · 2019: 10 · 2018: 10 · 2017: 14 · 2016: 13 · 2015: 25 · 2014: 17 · 2013: 18 · 2012: 19
FWCI
7.75
Type
journal article
Language
en
Open access
closed
Locations
  • Neurobiology of Learning and Memory (publishedVersion)
  • PubMed (publishedVersion)
  • UvA-DARE (University of Amsterdam) (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
maternal care, dentate gyrus, synaptic plasticity, long-term potentiation, glucocorticoids, corticosterone, beta-adrenergic stimulation, isoproterenol, dendritic morphology, fear conditioning, contextual fear, cued fear, stress response, Long-Evans rats
MeSH terms
Adrenergic beta-Agonists, Animals, Conditioning, Classical, Corticosterone, Cues, Dendrites, Fear, Glucocorticoids, Isoproterenol, Learning, Male, Maternal Behavior, Neurons, Stress, Psychological, Synapses, Time Factors, Long-Term Potentiation, Dentate Gyrus, Rats, Long-Evans, Rats

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