Cited by 169Neurotransmitter Receptor Influence on BehaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Intense cocaine self-administration after episodic social defeat stress, but not after aggressive behavior: dissociation from corticosterone activation

Covington, Herbert E., Miczek, Klaus A.·2005·Psychopharmacology

Abstract

Rationale An intense stress response characterizes both the dominant and submissive individuals during an aggressive confrontation, and these stress responses have enduring neural and behavioral consequences. Objectives In spite of similar glucocorticoid and corticolimbic dopamine activation, dominant and defeated individuals appear to diverge in terms of their drug taking. Do rats that are intermittently subjected to defeat stress become more sensitized to cocaine taking relative to rats that engage in aggressive bouts? Methods Separate groups of male Long-Evans rats were investigated after an initial 10-day period with four brief episodes of social defeat (intruders) or aggressive behavior (residents): (1) the corticosterone responses to the very first and the last confrontations were measured; (2) the locomotor response to an amphetamine (1 mg/kg) challenge 10 days after the last stress exposure served as an index of behavioral sensitization; (3) intravenous self-administration sessions assessed the reinforcing effects of 0.75 mg/kg/infusion cocaine when available after every fifth response (fixed ratio), when delivered after completing progressively more demanding response requirements (progressive ratio; 0.3 mg/kg/infusion), and when available during a 24-h binge of continuous access (0.3 mg/kg/infusion). Results Both social defeat of the intruder rat and attack behavior by the resident rat rapidly increased plasma levels of corticosterone after the first and last aggres…

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Crossref · 10.1007/s00213-005-0190-5

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  • A unique aspect of social defeat stress that distinguishes it from other environmental stressors is its ability to continuously activate the pituitary-adrenal axis over repeated social confrontations.

    “A unique aspect of social defeat stress that distinguishes it from other environmental stressors is its ability to continuously activate the pituitary-adrenal axis over repeated social confrontations9,18,19.”

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Authors
Covington, H. E., & Miczek, K. A.
Affiliations
Tufts University (US)
Corresponding author
Miczek, Klaus A.
Venue
Psychopharmacology
Published
2005-10-26
Volume
183
Issue
3
Pages
331-340
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W1990650114
Cited by
169
References
4
Citations by year
2025: 2 · 2023: 3 · 2022: 7 · 2021: 12 · 2020: 6 · 2019: 10 · 2018: 11 · 2017: 8 · 2016: 9 · 2015: 13 · 2014: 9 · 2013: 12 · 2012: 8
FWCI
2.50
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Public Health Service
  • National Institute on Drug Abuse (DA-02632, R01DA002632)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
cocaine self-administration, social defeat stress, aggression, corticosterone, stress habituation, amphetamine challenge, locomotor sensitization, domination and subordination, social stress, cocaine reinforcement
MeSH terms
Aggression, Animals, Cocaine, Corticosterone, Dominance-Subordination, Male, Self Administration, Stress, Psychological, Rats, Long-Evans, Rats

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