Cited by 452Neuroendocrine regulation and behaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Brain Oxytocin Inhibits Basal and Stress‐Induced Activity of the Hypothalamo‐Pituitary‐Adrenal Axis in Male and Female Rats: Partial Action Within the Paraventricular Nucleus

Neumann, Wigger, Torner, Holsboer, Landgraf·2000·Journal of Neuroendocrinology

Abstract

Oxytocin is a classic reproductive neuropeptide in the female mammal, but its functions in the brain of the male have been less well studied. As stress induces intracerebral oxytocin release independently of gender, we postulated that central oxytocin may play a role in the control of stress responses. In both male and virgin female rats, oxytocin receptor blockade in the brain by intracerebral infusion of a selective oxytocin antagonist (des Gly-NH2 d(CH2)5 [Tyr(Me)2, Thr4] OVT; 0.75 microgram/5 microliter increased the activity of the hypothalamo-pituitary-adrenal (HPA) axis as indicated by a significantly enhanced basal and stress-induced (exposure to the elevated plus-maze, forced swimming) secretion of corticotropin (ACTH) and corticosterone into blood. The anxiety-related behaviour on the plus-maze was not altered by the antagonist in either males or females. Infusion of the oxytocin antagonist into the hypothalamic paraventricular nucleus by reversed microdialysis resulted in a significant increase in basal release of ACTH in both male and virgin female rats. These results demonstrate a novel, gender-independent physiological function of endogenous brain oxytocin in the regulation of neuroendocrine stress responses. Under basal conditions, the inhibition of the HPA axis occurs, at least in part, within the paraventricular nucleus.

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Crossref · 10.1046/j.1365-2826.2000.00442.x

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Authors
Neumann, Wigger, Torner, Holsboer, & Landgraf
Affiliations
  • Max Planck Society (DE)
  • Max Planck Institute of Psychiatry (DE)
Corresponding author
Neumann
Venue
Journal of Neuroendocrinology
Publisher
Wiley
Published
2000-03
Volume
12
Issue
3
Pages
235-243
ISSN
  • 0953-8194 (ISSN-L)
  • 1365-2826
OpenAlex
W1870629785
Cited by
452
References
77
Citations by year
2026: 10 · 2025: 13 · 2024: 16 · 2023: 8 · 2022: 25 · 2021: 28 · 2020: 12 · 2019: 32 · 2018: 20 · 2017: 28 · 2016: 22 · 2015: 20 · 2014: 24 · 2013: 27 · 2012: 15
FWCI
18.48
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (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
hypothalamic-pituitary-adrenal axis, stress response, paraventricular nucleus, oxytocin receptor antagonist, ACTH secretion, corticosterone, sex differences, anxiety-like behavior, neuroendocrine regulation, male rats, female rats
MeSH terms
Adrenal Glands, Adrenocorticotropic Hormone, Animals, Behavior, Animal, Brain, Corticosterone, Female, Hypothalamus, Male, Ornipressin, Oxytocin, Paraventricular Hypothalamic Nucleus, Pituitary Gland, Stress, Physiological, Swimming, Rats, Wistar, Rats

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