Cited by 105Stress Responses and CortisolEstrogen and related hormone effectsAdrenal Hormones and Disorders

Differences between brain structures in nuclear translocation and dna binding of the glucocorticoid receptor during stress and the circadian cycle

Kitchener, Pierre, Di Blasi, Francesco, Borrelli, Emiliana, Piazza, Pier Vincenzo·2004·European Journal of Neuroscience

Abstract

Glucocorticoid receptors (GRs) are transcription factors that, upon activation by glucocorticoids, translocate to the cell nucleus, and bind to specific response elements (GREs) in the promoter region of target genes. We analysed stress- and circadian-induced changes in nuclear translocation and GRE binding of GRs in the hippocampus and the prefrontal cortex of the rat brain. Nuclear translocation and binding to GRE were measured in nuclear extracts by Western blot and gel shift, respectively. When glucocorticoid levels were low, as during the light period of the circadian cycle, nuclear GRs and GRE binding were almost undetectable. However, the increase in glucocorticoid levels observed during the dark phase of the circadian cycle or after stress induced a massive nuclear translocation of GRs and GRE binding. These effects were corticosterone-dependent because they were suppressed by adrenalectomy and restored by the injection of corticosterone. Furthermore, GR translocation and GRE binding were of higher amplitude or lasted longer in the hippocampus than in the prefrontal cortex. By contrast, extracellular levels of glucocorticoids, measured by microdialysis in freely moving animals, were identical in the two structures. These results suggest that specific intracellular regulations of GR activity contribute to differentiate the effects of glucocorticoids in different regions of the brain.

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Crossref · 10.1111/j.1460-9568.2004.03267.x

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Authors
Kitchener, P., Di Blasi, F., Borrelli, E., & Piazza, P. V.
Affiliations
  • Université de Bordeaux (FR)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Piazza, Pier Vincenzo
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2004-04
Volume
19
Issue
7
Pages
1837-1846
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2074165127
Cited by
105
References
55
Citations by year
2025: 4 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 3 · 2019: 3 · 2018: 4 · 2017: 4 · 2016: 5 · 2015: 3 · 2014: 11 · 2013: 2 · 2012: 8
FWCI
3.54
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
glucocorticoid receptor, nuclear translocation, glucocorticoid response element, DNA binding, circadian rhythm, stress, hippocampus, prefrontal cortex, corticosterone, adrenalectomy, transcriptional regulation
MeSH terms
Adrenalectomy, Animals, Cell Nucleus, Chlorocebus aethiops, Circadian Rhythm, Corticosterone, Cytoplasm, Dexamethasone, DNA, Dose-Response Relationship, Drug, Glucocorticoids, Hippocampus, Male, Radioimmunoassay, Receptors, Glucocorticoid, Stress, Physiological, Time Factors, Blotting, Western, Rats, Sprague-Dawley, Prefrontal Cortex, Microdialysis, Statistics, Nonparametric, COS Cells, Active Transport, Cell Nucleus, Electrophoretic Mobility Shift Assay, Rats

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