Cited by 240Neuroendocrine regulation and behaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Oxytocin protects against negative behavioral and autonomic consequences of long-term social isolation

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Grippo, Angela J., Trahanas, Diane M., Zimmerman, Robert R., Porges, Stephen W., Carter, C. Sue·2009·Psychoneuroendocrinology

Abstract

Positive social interactions and social support may protect against various forms of mental and physical illness, although the mechanisms for these effects are not well identified. The socially monogamous prairie vole, which--like humans--forms social bonds and displays high levels of parasympathetic activity, has provided a useful model for investigating neurobiological systems that mediate the consequences of sociality. In the present study, adult female prairie voles were exposed to social isolation or continued pairing with a female sibling (control conditions) for 4 weeks. During weeks 3 and 4 of this period, animals were administered oxytocin (20 microg/50 microl, s.c.) or saline vehicle (50 microl, s.c.) daily for a total of 14 days. In Experiment 1, autonomic parameters were recorded during and following isolation or pairing. Isolation (vs. pairing) significantly increased basal heart rate (HR) and reduced HR variability and vagal regulation of the heart; these changes in isolated animals were prevented with oxytocin administration. In Experiment 2, behaviors relevant to depression [sucrose intake and swimming in the forced swim test (FST)] were measured as a function of isolation. Isolation reduced sucrose intake and increased immobility in the FST; these behaviors also were prevented by oxytocin. Administration of oxytocin did not significantly alter cardiac, autonomic or behavioral responses of paired animals. These findings support the hypothesis that oxytocinergic mechanisms can protect against behavioral and cardiac dysfunction in response to chronic social stressors, and can provide insight into social influences on behavior and autonomic function in humans.

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Crossref · 10.1016/j.psyneuen.2009.05.017

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Authors
Grippo, A. J., Trahanas, D. M., Zimmerman, R. R., Porges, S. W., & Carter, C. S.
Affiliations
  • Northern Illinois University (US)
  • University of Illinois Chicago (US)
Corresponding author
Grippo, Angela J.
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2009-11
Volume
34
Issue
10
Pages
1542-1553
ISSN
0306-4530 (ISSN-L)
OpenAlex
W2046327192
Cited by
240
References
79
Citations by year
2026: 5 · 2025: 10 · 2024: 9 · 2023: 12 · 2022: 8 · 2021: 14 · 2020: 10 · 2019: 12 · 2018: 13 · 2017: 15 · 2016: 17 · 2015: 16 · 2014: 28 · 2013: 21 · 2012: 18
FWCI
21.68
Type
journal article
Language
en
Open access
Locations
  • Psychoneuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (MH77581, R21MH077581, MH 67446, MH 73233, F32MH073233, MH72935, R21MH067446, R01MH072935)
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, social isolation, Microtus ochrogaster, social stress, autonomic function, heart rate variability, vagal regulation, depression-like behavior, sucrose intake, forced swim test, social bonding, parasympathetic activity
MeSH terms
Animals, Autonomic Nervous System, Behavior, Animal, Body Weight, Arvicolinae, Female, Heart, Heart Rate, Helplessness, Learned, Organ Size, Oxytocin, Social Isolation, Time Factors

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