Cited by 327Neuroendocrine regulation and behaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Anxiety and stress responses in female oxytocin deficient mice

Amico, J. A., Mantella, R. C., Vollmer, R. R., Li, X.·2004·Journal of Neuroendocrinology

Abstract

Oxytocin is believed to attenuate the response of the hypothalamic-pituitary-adrenal axis to stress and to be anxiolytic. Stressors with a psychological component evoke both central and peripheral secretion of oxytocin in laboratory rodents. Oxytocin gene deletion mice provide a novel way to understand the role of oxytocin in stress and anxiety-related behaviours. We present our experience with female oxytocin deficient mice that were tested in an elevated plus maze (EPM), a behavioural test of anxiety, or exposed to psychogenic stressors (platform shaker or novel environment). Oxytocin-deficient mice not only displayed more anxiety-related behaviour, but also released more corticosterone after a psychogenic stressor and manifested greater stress-induced hyperthermia compared to wild-type mice. The diurnal variation of corticosterone and the response of corticosterone to corticotropin-releasing factor were not significantly different between genotypes. We also measured Fos-immunoreactive protein, an index of neuronal activation, in the medial amygdala of female mice after EPM testing. The medial amygdala is important for processing of psychogenic stress and anxiety and also contains oxytocin pathways and oxytocin receptors. The expression of Fos in the medial amygdala of mice not exposed to the EPM was not different between genotypes. Following EPM exposure, Fos expression was greater in oxytocin null compared to wild-type mice. Our findings support the hypothesis that central oxytocin is anxiolytic, and attenuates the stress response to psychogenic provocation in female mice.

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Crossref · 10.1111/j.0953-8194.2004.01161.x

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  • Female mice lacking the oxytocin gene exhibit enhanced corticosteroid responses to psychogenic stressors and enhanced anxiety on the elevated plus-maze compared to wildtype controls.

    “Similarly, female mice lacking the oxytocin gene exhibit enhanced corticosteroid responses to psychogenic stressors and enhanced anxiety on the elevated plus-maze compared to wildtype controls (Amico et al., 2004; Mantella et al., 2003).”

    From Effects of intranasal oxytocin on social anxiety in males with fragile X syndrome (2012) · cites this paper as Amico et al., 2004

  • The anxiolytic, approach-promoting, and tolerance-enhancing roles of OT may serve as foundational substrates that promote social exploration and interaction while suppressing social avoidance.

    “The anxiolytic, approach-promoting, and tolerance-enhancing roles of OT (Amico et al., 2004; Averbeck, 2010; Heinrichs et al., 2003; Kemp and Guastella, 2010; Neumann et al., 2000a; Riem et al., 2011; Ring et al., 2006; Uvnäs-Moberg et al., 1994; Waldherr and Neumann, 2007; Yoshida et al., 2009; Young, 2002) may serve as foundational substrates that promote social exploration and interaction while”

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Authors
Amico, J. A., Mantella, R. C., Vollmer, R. R., & Li, X.
Affiliations
University of Pittsburgh (US)
Corresponding author
Amico, J. A.
Venue
Journal of Neuroendocrinology
Publisher
Wiley
Published
2004-04
Volume
16
Issue
4
Pages
319-324
ISSN
  • 0953-8194 (ISSN-L)
  • 1365-2826
OpenAlex
W2070460280
Cited by
327
References
45
Citations by year
2026: 7 · 2025: 11 · 2024: 9 · 2023: 12 · 2022: 9 · 2021: 16 · 2020: 30 · 2019: 9 · 2018: 18 · 2017: 11 · 2016: 14 · 2015: 15 · 2014: 17 · 2013: 14 · 2012: 18
FWCI
2.54
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01hd037268-04)
  • National Institute of Mental Health
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD37268)
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, anxiety, psychogenic stress, stress response, corticosterone, stress-induced hyperthermia, hypothalamic-pituitary-adrenal axis, medial amygdala, Fos expression, elevated plus maze, female mice, oxytocin receptor
MeSH terms
Animals, Anxiety, Female, Mice, Mutant Strains, Oxytocin, Stress, Physiological, Mice

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