Cited by 71Neurotransmitter Receptor Influence on BehaviorNicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology Research

Acetylcholine release in the mesocorticolimbic dopamine system during cocaine seeking: conditioned and unconditioned contributions to reward and motivation

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You, Zhi-Bing, Wang, Bin, Zitzman, Dawnya, Wise, Roy A.·2008·The Journal of Neuroscience

Abstract

Microdialysis was used to assess the contribution to cocaine seeking of cholinergic input to the mesocorticolimbic dopamine system in ventral tegmental area (VTA). VTA acetylcholine (ACh) was elevated in animals lever pressing for intravenous cocaine and in cocaine-experienced and cocaine-naive animals passively receiving similar "yoked" injections. In cocaine-trained animals, the elevations comprised an initial (first hour) peak to approximately 160% of baseline and a subsequent plateau of 140% of baseline for the rest of the cocaine intake period. In cocaine-naive animals, yoked cocaine injections raised ACh levels to the 140% plateau but did not cause the initial 160% peak. In cocaine-trained animals that received unexpected saline (extinction conditions) rather than the expected cocaine, the initial peak was seen but the subsequent plateau was absent. VTA ACh levels played a causal role and were not just a correlate of cocaine seeking. Blocking muscarinic input to the VTA increased cocaine intake; the increase in intake offset the decrease in cholinergic input, resulting in the same VTA dopamine levels as were seen in the absence of the ACh antagonists. Increased VTA ACh levels (resulting from 10 microM VTA neostigmine infusion) increased VTA dopamine levels and reinstated cocaine seeking in cocaine-trained animals that had undergone extinction; these effects were strongly attenuated by local infusion of a muscarinic antagonist and weakly attenuated by a nicotinic antagonist. These findings identify two cholinergic responses to cocaine self-administration, an unconditioned response to cocaine itself and a conditioned response triggered by cocaine-predictive cues, and confirm that these cholinergic responses contribute to the control of cocaine seeking.

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Authors
You, Z.-B., Wang, B., Zitzman, D., & Wise, R. A.
Affiliations
National Institutes of Health (US)
Venue
The Journal of Neuroscience
Published
2008-09-03
Volume
28
Issue
36
Pages
9021-9029
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2039959923
Cited by
71
References
67
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 5 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 8 · 2016: 2 · 2015: 4 · 2014: 5 · 2013: 3 · 2012: 9
FWCI
3.32
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Health and Human Services
  • National Institutes of Health (Z99 DA999999)
  • National Institute on Drug Abuse
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
acetylcholine, cocaine seeking, mesocorticolimbic dopamine system, ventral tegmental area, cocaine self-administration, conditioned response, unconditioned response, extinction, reinstatement, muscarinic receptors, nicotinic acetylcholine receptors, neostigmine, reward, motivation, predictive cues
MeSH terms
Acetylcholine, Analysis of Variance, Animals, Atropine, Behavior, Animal, Cocaine, Conditioning, Psychological, Dopamine, Extinction, Psychological, Male, Mecamylamine, Motivation, Reward, Self Administration, Substantia Nigra, Microdialysis, Ventral Tegmental Area, Cholinergic Antagonists, Cocaine-Related Disorders, Rats, Long-Evans, Rats

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