Cited by 34Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNicotinic Acetylcholine Receptors Study

Muscarinic acetylcholine receptors in the nucleus accumbens core and shell contribute to cocaine priming-induced reinstatement of drug seeking

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Yee, Judy, Famous, Katie R., Hopkins, Thomas J., McMullen, Michael C., Pierce, R. Christopher, Schmidt, Heath D.·2011·European Journal of Pharmacology

Abstract

Muscarinic acetylcholine receptors in the nucleus accumbens play an important role in mediating the reinforcing effects of cocaine. However, there is a paucity of data regarding the role of accumbal muscarinic acetylcholine receptors in the reinstatement of cocaine-seeking behavior. The goal of these experiments was to assess the role of muscarinic acetylcholine receptors in the nucleus accumbens core and shell in cocaine and sucrose priming-induced reinstatement. Rats were initially trained to self-administer cocaine or sucrose on a fixed-ratio schedule of reinforcement. Lever-pressing behavior was then extinguished and followed by a subsequent reinstatement phase during which operant responding was induced by either a systemic injection of cocaine in cocaine-experienced rats or non-contingent delivery of sucrose pellets in subjects with a history of sucrose self-administration. Results indicated that systemic administration of the muscarinic acetylcholine receptor antagonist scopolamine (5.0 mg/kg, i.p.) dose-dependently attenuated cocaine, but not sucrose, reinstatement. Furthermore, administration of scopolamine (36.0 μg) directly into the nucleus accumbens shell or core attenuated cocaine priming-induced reinstatement. In contrast, infusion of scopolamine (36.0 μg) directly into the accumbens core, but not shell, attenuated sucrose reinstatement, which suggests that muscarinic acetylcholine receptors in these two subregions of the nucleus accumbens have differential roles in sucrose seeking. Taken together, these results indicate that cocaine priming-induced reinstatement is mediated, in part, by increased signaling through muscarinic acetylcholine receptors in the shell subregion of the nucleus accumbens. Muscarinic acetylcholine receptors in the core of the accumbens, in contrast, appear to play a more general (i.e. not cocaine specific) role in motivated behaviors.

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  • Blockade of muscarinic acetylcholine receptors using scopolamine decreases reinstatement of cocaine seeking.

    “Less intuitively, blockade of mAChRs using scopolamine decreases reinstatement of cocaine seeking (Yee et al., 2011), but this may be due to increased ACh release through blockade of inhibitory autoreceptors (Douglas et al., 2001).”

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Authors
Yee, J., Famous, K. R., Hopkins, T. J., McMullen, M. C., Pierce, R. C., & Schmidt, H. D.
Affiliations
  • Boston University (US)
  • University of Pennsylvania (US)
Corresponding author
Schmidt, Heath D.
Venue
European Journal of Pharmacology
Publisher
Elsevier BV
Published
2011-01
Volume
650
Issue
2-3
Pages
596-604
ISSN
0014-2999 (ISSN-L)
OpenAlex
W2024305001
Cited by
34
References
59
Citations by year
2026: 1 · 2025: 2 · 2023: 1 · 2022: 3 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 4 · 2016: 1 · 2015: 3 · 2014: 5 · 2013: 1 · 2012: 3
FWCI
1.04
Type
journal article
Language
en
Open access
Locations
  • European Journal of Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • School of Medicine, Boston University
  • National Institutes of Health
  • National Institute on Drug Abuse (R01DA015214, R01DA15214, K02 DA18678, K01DA030445, F30 DA19304, F30DA019304, DA 16824, F31DA016824, K02DA018678)
  • National Institute of General Medical Sciences (T32GM008541, T32 GM008541-7)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
Keywords
muscarinic receptors, nucleus accumbens, cocaine priming, reinstatement, cocaine self-administration, sucrose self-administration, scopolamine, motivated behavior, drug-seeking behavior
MeSH terms
Animals, Behavior, Animal, Cocaine, Conditioning, Operant, Dose-Response Relationship, Drug, Extinction, Psychological, Male, Nucleus Accumbens, Receptors, Muscarinic, Reinforcement Schedule, Scopolamine, Self Administration, Rats, Sprague-Dawley, Muscarinic Antagonists, Rats, Drug-Seeking Behavior

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