Cited by 65Neuroscience and Neuropharmacology ResearchStress Responses and CortisolMemory and Neural Mechanisms

Maternal Care Influences Hippocampal N-Methyl-D-Aspartate Receptor Function and Dynamic Regulation by Corticosterone in Adulthood

Bagot, Rosemary C., Tse, Yiu Chung, Nguyen, Huy-Binh, Wong, Alice S., Meaney, Michael J., Wong, Tak Pan·2012·Biological Psychiatry

Abstract

Background Variations in maternal care in the rat associate with robust differences in hippocampal development and synaptic plasticity in the offspring. Maternal care also influences pituitary-adrenal stress responses and corticosterone (CORT) regulation of hippocampal plasticity. N-methyl-D-aspartate receptors (NMDAR) regulate synaptic plasticity, and NMDAR function is modulated by stress and CORT. We hypothesized that altered NMDAR function underlies the interaction of maternal and stress effects on hippocampal synaptic plasticity. Methods We used electrophysiology and western blot to examine NMDAR synaptic function/expression and NMDAR-dependent long-term potentiation (LTP) in adult offspring of mothers that varied in the frequency of pup licking/grooming (LG) (i.e., High or Low LG). Results Basal NMDAR synaptic function was enhanced in the hippocampal dentate gyrus (DG) of adult Low LG offspring. Synaptic expression of NMDAR but not α-amino-3-hydroxy-methyl-4-isoxazole propionic acid receptors was also increased. Stress level CORT (100 nmol/L) rapidly ( Conclusions Low LG offspring exhibit basally elevated NMDAR function coupled with insensitivity to CORT modulation indicative of a chronic alteration of NMDAR function. Elevated NMDAR function in the hippocampus might underlie impaired LTP in Low LG offspring.

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Crossref · 10.1016/j.biopsych.2012.03.016

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Authors
Bagot, R. C., Tse, Y. C., Nguyen, H.-B., Wong, A. S., Meaney, M. J., & Wong, T. P.
Affiliations
Douglas Mental Health University Institute (CA)
Corresponding author
Wong, Tak Pan
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2012-09
Volume
72
Issue
6
Pages
491-498
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2069943337
Cited by
65
References
50
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 8 · 2016: 2 · 2015: 10 · 2014: 10 · 2013: 6 · 2012: 5
FWCI
4.08
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Sciences and Engineering Research Council of Canada (38868-03)
  • Canadian Institutes of Health Research (MOP-106649)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
maternal care, NMDA receptor, corticosterone, hippocampus, synaptic plasticity, long-term potentiation, dentate gyrus, stress response, glucocorticoid receptor, AMPA receptors, APV, offspring development
MeSH terms
Animals, Corticosterone, Electrophysiology, Female, Grooming, Male, Maternal Behavior, Neuronal Plasticity, Blotting, Western, Receptors, N-Methyl-D-Aspartate, Long-Term Potentiation, alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid, Dentate Gyrus, Rats, Long-Evans, Rats

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