Cited by 162Neurotransmitter Receptor Influence on BehaviorStress Responses and CortisolNeuropeptides and Animal Physiology

Escalated or Suppressed Cocaine Reward, Tegmental BDNF, and Accumbal Dopamine Caused by Episodic versus Continuous Social Stress in Rats

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Miczek, K. A., Nikulina, E. M., Shimamoto, A., Covington, H. E.·2011·Journal of Neuroscience

Abstract

The neural link between ostensibly aversive stress experiences and intensely rewarding drug taking remains to be delineated. Epidemiological data associate stress and the abuse of various drugs, and experimental data identify the conditions that determine how episodic social stress intensifies the motivation for cocaine and the actual self-administration of cocaine. Two types of social stress have been the focus of experimental study in Long-Evans rats, since they engender divergent changes in drug- or sugar-rewarded behavior and in neuroadaptation. Episodic social defeat stress consists of four brief confrontations between the experimental rat and an aggressive resident rat of the Long-Evans strain over the course of 10 d. Subordination stress involves the continuous exposure to an aggressive resident for 5 weeks, while living in a protective cage within the resident's home cage with brief daily confrontations. These stress experiences result in (1) increased intravenous cocaine self-administration under a fixed ratio schedule with prolonged binge-like access in episodically defeated intruder rats but suppressed cocaine intake by continuously subordinate rats; (2) deteriorated sugar preference and intake and decreased exploratory behavior in subordinate, but not intermittently defeated, rats; and (3) a sensitized dopamine (DA) response in the nucleus accumbens via in vivo microdialysis and increased tegmental brain-derived neural growth factor (BDNF) in episodically defeated rats, whereas the continuously subordinate rats show suppression of the DA and BDNF responses. These divergent neuroadaptations to social stress may represent the substrates for the intensification of cocaine "bingeing" relative to the anhedonia-like deterioration of reward processes during subordination stress.

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Crossref · 10.1523/jneurosci.0637-11.2011

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  • Rats under a 10-day episodic defeat paradigm had a sensitised dopamine response in the nucleus accumbens, whilst when under a 5-week continuous subordination paradigm they exhibited a suppressed dopamine response.

    “Likewise, rats under a 10-day episodic defeat paradigm had a sensitised dopamine response in the nucleus accumbens, whilst when under a 5-week continuous subordination paradigm they exhibited a suppressed dopamine response (Miczek et al., 2011).”
  • Acute stressors are encoded by dopamine-releasing neurons in the VTA, cause dopamine sensitization in the nucleus accumbens, and facilitate drug taking; mesolimbic dopamine release also encodes negative motivational states and stress responses.

    “Recent experiments also show that acute stressors are encoded by DA-releasing neurons in the VTA, cause DA sensitization in the NAC, and facilitate drug taking; demonstrating that mesolimbic DA release also encodes negative motivational states and stress responses (Miczek et al 2011; Wang and Tsien 2011).”
  • Some stress-related effects of CRF in the NAC shell may be DA-dependent.

    “Some of the stress-related effects of CRF in the NAC shell may be DA-dependent; recall that DA is also modulated by acute and chronic stressors (Miczek et al 2011; Wang and Tsien 2011; Chen et al 2012b).”
  • The facilitative effects of acute stressors on male pair bonding are directly analogous to the facilitative effects of acute stressors on drug-taking behavior.

    “The facilitative effects of acute stressors on male pair bonding are directly analogous to the facilitative effects of acute stressors on drug-taking behavior, a study which, interestingly, was also performed in male rodents (Miczek et al 2011).”

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Research works printed but not linked: 7

  1. Barnett SA 1975 The rat. A study in behavior Chicago University of Chicago Press
  2. Berdoy M Drickamer LC Wolff JO Sherman PW 2007 Comparative social organization and life history of Rattus and Mus Rodent societies: an ecological and evolutionary perspective 380 392 Chicago and London University of Chicago Press
  3. Covington HE Miczek KA 2001 Repeated social-defeat stress, cocaine or morphine. Effects on behavioral sensitization and intravenous cocaine self-administration “binges” Psychopharmacology 158 388 398 11797060
  4. Miczek KA de Boer SF Whishaw IQ Kolb B 2005 Aggressive, defensive, and submissive behavior The behavior of the laboratory rat: a handbook with tests 344 352 New York Oxford University Press
  5. National Research Council 1996 Guide for the care and use of laboratory animals Washington DC National Academy Press
  6. Remie R van Dongen JJ Rensema JW van Dongen JJ 1990 Permanent cannulation of the jugular vein (acc. to Steffens) Manual of microsurgery on the laboratory rat 159 169 Amsterdam Elsevier
  7. Von Holst D Möller AP Milinski M Slater PJB 1998 The concept of stress and its relevance for animal behavior Advances in the study of behavior, Vol. 27: Stress and behavior 1 131 New York Academic Press

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Authors
Miczek, K. A., Nikulina, E. M., Shimamoto, A., & Covington, H. E.
Affiliations
Tufts University (US)
Venue
Journal of Neuroscience
Published
2011-07-06
Volume
31
Issue
27
Pages
9848-9857
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2053981588
Cited by
162
References
70
Citations by year
2025: 4 · 2024: 8 · 2023: 6 · 2022: 12 · 2021: 7 · 2020: 10 · 2019: 12 · 2018: 11 · 2017: 16 · 2016: 11 · 2015: 14 · 2014: 19 · 2013: 12 · 2012: 15
FWCI
6.49
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Alcohol Abuse and Alcoholism (R01AA013983)
  • National Institute on Drug Abuse (R03DA024817, DA-02632, R01DA026451, DA024817, R01DA002632, R01DA031734, DA026451)
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 stress, nucleus accumbens dopamine, brain-derived neurotrophic factor, cocaine reward, sugar preference, exploratory behavior, anhedonia, neural adaptation, Long-Evans rats
MeSH terms
Analysis of Variance, Animals, Body Weight, Cocaine, Conditioning, Operant, Dopamine, Electrochemistry, Food Handling, Gene Expression Regulation, Male, Motor Activity, Nucleus Accumbens, Reinforcement Schedule, Reward, Self Administration, Stress, Psychological, Sucrose, Time Factors, Oncogene Proteins v-fos, Microdialysis, Ventral Tegmental Area, Dopamine Uptake Inhibitors, Brain-Derived Neurotrophic Factor, Rats, Long-Evans, Rats

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