Cited by 94Neuroendocrine regulation and behaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Hippocampal microinfusion of oxytocin attenuates the behavioural response to stress by means of dynamic interplay with the glucocorticoid-catecholamine responses

Cohen, H., Kaplan, Z., Kozlovsky, N., Gidron, Y., Matar, M. A., Zohar, J.·2010·Journal of Neuroendocrinology

Abstract

The neurohypophysial hormone oxytocin acts as a central nervous system neurotransmitter/neuromodulator. We evaluated the effects of oxytocin on behavioural responses to stress, as well as associated biophysiological responses, in a controlled, prospective animal model. The long‐term effects of exogenous oxytocin microinjected to the hippocampus of male rats were assessed. Animals were exposed to predator scent stress and treated 1 h or 7 days later with oxytocin or vehicle. Behaviours were assessed with the elevated plus‐maze and acoustic startle response tests, 7 days after microinjection and freezing behaviour upon exposure to a trauma‐related cue on day 8. These data served for classification into behavioural response groups. Trauma cue response, circulating corticosterone and oxytocin, hippocampal expression of glucocorticoid and mineralocorticoid receptors, and oxytocin receptor mRNA levels were assessed. The interplay between oxytocin, corticosterone and norepinephrine was assessed. Microinfusion of oxytocin both immediately after predator scent stress exposure or 7 days later, after exposure to trauma cue significantly reduced the prevalence rates of extreme responders and reduced trauma cue freezing responses. Post‐exposure treatment with oxytocin significantly corrected the corticosterone stress response, decreased glucocorticoid receptor expression and increased mineralocorticoid receptor expression in the hippocampus compared to vehicle treatment. High‐dose corticosterone administration together with norepinephrine caused release of plasma oxytocin and hippocampal oxytocin receptor. Oxytocin is actively involved in the neurobiological response to predator scent stress processes and thus warrants further study as a potential therapeutic avenue for the treatment of anxiety‐related disorders.

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Crossref · 10.1111/j.1365-2826.2010.02003.x

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Authors
Cohen, H., Kaplan, Z., Kozlovsky, N., Gidron, Y., Matar, M. A., & Zohar, J.
Affiliations
  • Ben-Gurion University of the Negev (IL)
  • Brunel University of London (GB)
  • Tel Aviv University (IL)
Corresponding author
Cohen, H.
Venue
Journal of Neuroendocrinology
Publisher
Wiley
Published
2010-07-16
Volume
22
Issue
8
Pages
889-904
ISSN
  • 0953-8194 (ISSN-L)
  • 1365-2826
OpenAlex
W2128650352
Cited by
94
References
78
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 4 · 2020: 2 · 2019: 10 · 2018: 7 · 2017: 10 · 2016: 8 · 2015: 11 · 2014: 8 · 2013: 5 · 2012: 7
FWCI
7.00
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • VUBIR (Vrije Universiteit Brussel) (submittedVersion)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
oxytocin, hippocampus, stress response, corticosterone, glucocorticoid receptor, mineralocorticoid receptor, norepinephrine, oxytocin receptor, anxiety-related disorders, neurohypophyseal hormones
MeSH terms
Animals, Behavior, Animal, Catecholamines, Corticosterone, Glucocorticoids, Hippocampus, Male, Microinjections, Neuropsychological Tests, Oxytocics, Oxytocin, Receptors, Glucocorticoid, Reflex, Startle, Stress Disorders, Post-Traumatic, Stress, Psychological, Rats, Sprague-Dawley, Receptors, Oxytocin, Receptors, Mineralocorticoid, Rats

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