Cited by 205Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsStress Responses and Cortisol

Localization of glucocorticoid receptors at postsynaptic membranes in the lateral amygdala

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Johnson, L.R., Farb, C., Morrison, J.H., McEwen, B.S., Ledoux, J.E.·2005·Neuroscience

Abstract

Glucocorticoids, released in high concentrations from the adrenal cortex during stressful experiences, bind to glucocorticoid receptors in nuclear and peri-nuclear sites in neuronal somata. Their classically known mode of action is to induce gene promoter receptors to alter gene transcription. Nuclear glucocorticoid receptors are particularly dense in brain regions crucial for memory, including memory of stressful experiences, such as the hippocampus and amygdala. While it has been proposed that glucocorticoids may also act via membrane bound receptors, the existence of the latter remains controversial. Using electron microscopy, we found glucocorticoid receptors localized to non-genomic sites in rat lateral amygdala, glia processes, presynaptic terminals, neuronal dendrites, and dendritic spines including spine organelles and postsynaptic membrane densities. The lateral nucleus of the amygdala is a region specifically implicated in the formation of memories for stressful experiences. These newly observed glucocorticoid receptor immunoreactive sites were in addition to glucocorticoid receptor immunoreactive signals observed using electron and confocal microscopy in lateral amygdala principal neuron and GABA neuron soma and nuclei, cellular domains traditionally associated with glucocorticoid immunoreactivity. In lateral amygdala, glucocorticoid receptors are thus also localized to non-nuclear-membrane translocation sites, particularly dendritic spines, where they show an affinity for postsynaptic membrane densities, and may have a specialized role in modulating synaptic transmission plasticity related to fear and emotional memory.

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Crossref · 10.1016/j.neuroscience.2005.06.050

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Authors
Johnson, L. R., Farb, C., Morrison, J. H., McEwen, B. S., & Ledoux, J. E.
Affiliations
New York University (US)
Venue
Neuroscience
Publisher
Elsevier BV
Published
2005-01
Volume
136
Issue
1
Pages
289-299
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2017103890
Cited by
205
References
117
Citations by year
2026: 1 · 2025: 3 · 2024: 4 · 2023: 5 · 2022: 2 · 2021: 5 · 2020: 11 · 2019: 5 · 2018: 8 · 2017: 16 · 2016: 16 · 2015: 12 · 2014: 13 · 2013: 10 · 2012: 17
FWCI
3.74
Type
journal article
Language
en
Open access
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • QUT ePrints (Queensland University of Technology) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Faculty of Health; Institute of Health and Biomedical Innovation
Funders
National Institute of Mental Health (MH-58911, P50MH058911)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
glucocorticoid receptor, lateral amygdala, postsynaptic membrane, dendritic spines, non-genomic steroid action, stress memory, fear memory, synaptic plasticity, presynaptic terminals, GABAergic neurons
MeSH terms
Amygdala, Animals, Immunologic Techniques, Male, Microscopy, Electron, Receptors, Glucocorticoid, Synaptic Membranes, Tissue Distribution, Rats, Sprague-Dawley, Rats

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