Cited by 40Neuroscience and Neuropharmacology ResearchStress Responses and CortisolMemory and Neural Mechanisms

Regulation of kainate receptor subunit mRNA by stress and corticosteroids in the rat hippocampus

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Hunter, Richard G., Bellani, Rudy, Bloss, Erik, Costa, Ana, McCarthy, Katharine, McEwen, Bruce S.·2009·PLoS ONE

Abstract

Kainate receptors are a class of ionotropic glutamate receptors that have a role in the modulation of glutamate release and synaptic plasticity in the hippocampal formation. Previous studies have implicated corticosteroids in the regulation of these receptors and recent clinical work has shown that polymorphisms in kainate receptor subunit genes are associated with susceptibility to major depression and response to anti-depressant treatment. In the present study we sought to examine the effects of chronic stress and corticosteroid treatments upon the expression of the mRNA of kainate receptor subunits GluR5-7 and KA1-2. Our results show that, after 7 days, adrenalectomy results in increased expression of hippocampal KA1, GluR6 and GluR7 mRNAs, an effect which is reversed by treatment with corticosterone in the case of KA1 and GluR7 and by aldosterone treatment in the case of GluR6. 21 days of chronic restraint stress (CRS) elevated the expression of the KA1 subunit, but had no effect on the expression of the other subunits. Similarly, 21 days of treatment with a moderate dose of corticosterone also increased KA1 mRNA in the dentate gyrus, whereas a high corticosterone dose has no effect. Our results suggest an interaction between hippocampal kainate receptor composition and the hypothalamic-pituitary-adrenal (HPA) axis and show a selective chronic stress induced modulation of the KA1 subunit in the dentate gyrus and CA3 that has implications for stress-induced adaptive structural plasticity.

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Crossref · 10.1371/journal.pone.0004328

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  • Schizophrenics express significantly reduced kainate receptors in the hippocampus.

    “and schizophrenics have been found express significantly reduced kainate receptors in this region (Hunter et al., 2009;Benes et al., 2001).”

    From Glutamate receptors in domestication and modern human evolution (2020) · cites this paper as Hunter et al., 2009

  • High glucocorticoid inputs from the adrenal gland to the hippocampus reduce the expression of kainate receptors.

    “Furthermore, high glucocorticoid inputs from the adrenal gland to the hippocampus reduce the expression of kainate receptors, and schizophrenics have been found express significantly reduced kainate receptors in this region (Hunter et al., 2009;Benes et al., 2001).”

    From Glutamate receptors in domestication and modern human evolution (2020) · cites this paper as Hunter et al., 2009

  • Adrenalectomy leads to increased expression of GRIK2 in the dentate gyrus and CA3, and of GRIK3 in DG.

    “Adrenalectomy (lowering corticosteroid levels) leads to increased expression of GRIK2 in the dentate gyrus (DG) and CA3, and of GRIK3 in DG (Hunter et al., 2009) (although no change has also been reported for GRIK2 in CA3 (Joëls et al., 1996)).”

    From Glutamate receptors in domestication and modern human evolution (2020) · cites this paper as Hunter et al., 2009

  • Chronic corticosterone treatment leads to lower expression of GRIK3 and GRIK4 in hippocampal structures, although no changes were noted for GRIK2 or GRIK5.

    “Similarly, chronic treatment leads to lower expression of GRIK3 and GRIK4 in hippocampal structures, although no changes were noted for GRIK2 or GRIK5 (Hunter et al., 2009).”

    From Glutamate receptors in domestication and modern human evolution (2020) · cites this paper as Hunter et al., 2009

  • MR binding has been reported both to lower and raise GRIK2 levels in the hippocampus.

    “MR binding has been reported both to lower and raise GRIK2 levels in the hippocampus (Hunter et al., 2009;Joëls et al., 1996).”

    From Glutamate receptors in domestication and modern human evolution (2020) · cites this paper as Hunter et al., 2009

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Authors
Hunter, R. G., Bellani, R., Bloss, E., Costa, A., McCarthy, K., & McEwen, B. S.
Affiliations
Rockefeller University (US)
Corresponding author
Hunter, Richard G.
Venue
PLoS ONE
Published
2009-01-30
Volume
4
Issue
1
Pages
e4328
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2023004166
Cited by
40
References
46
Citations by year
2025: 1 · 2024: 2 · 2021: 4 · 2020: 3 · 2019: 1 · 2016: 3 · 2014: 5 · 2013: 2 · 2012: 3
FWCI
2.63
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Institutes of Health (MH41256)
  • National Institute of Mental Health (MH-41256, MH-15125, R37MH041256, T32MH015125, MH065749, R01MH041256, F32MH065749)
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
kainate receptors, GluR5, GluR6, chronic restraint stress, corticosterone, aldosterone, adrenalectomy, hippocampus, dentate gyrus, CA3, hypothalamic-pituitary-adrenal axis, mRNA expression, synaptic plasticity, major depressive disorder
MeSH terms
Adrenalectomy, Aldosterone, Animals, Anti-Inflammatory Agents, Corticosterone, Gene Expression Regulation, Neuronal Plasticity, Restraint, Physical, RNA, Messenger, Stress, Psychological, Kainic Acid Receptors, Dentate Gyrus, Protein Subunits, Rats

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