Cited by 21Neurotransmitter Receptor Influence on BehaviorNicotinic Acetylcholine Receptors StudySmoking Behavior and Cessation

The incentive amplifying effects of nicotine are reduced by selective and non-selective dopamine antagonists in rats

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Palmatier, Matthew I., Kellicut, Marissa R., Brianna Sheppard, A., Brown, Russell W., Robinson, Donita L.·2014·Pharmacology Biochemistry and Behavior

Abstract

Nicotine is a psychomotor stimulant with 'reinforcement enhancing' effects--the actions of nicotine in the brain increase responding for non-nicotine rewards. We hypothesized that this latter effect of nicotine depends on increased incentive properties of anticipatory cues; consistent with this hypothesis, multiple laboratories have reported that nicotine increases sign tracking, i.e. approach to a conditioned stimulus (CS), in Pavlovian conditioned-approach tasks. Incentive motivation and sign tracking are mediated by mesolimbic dopamine (DA) transmission and nicotine facilitates mesolimbic DA release. Therefore, we hypothesized that the incentive-promoting effects of nicotine would be impaired by DA antagonists. To test this hypothesis, separate groups of rats were injected with nicotine (0.4mg/kg base) or saline prior to Pavlovian conditioning sessions in which a CS (30s illumination of a light or presentation of a lever) was immediately followed by a sweet reward delivered in an adjacent location. Both saline and nicotine pretreated rats exhibited similar levels of conditioned approach to the reward location (goal tracking), but nicotine pretreatment significantly increased approach to the CS (sign tracking), regardless of type (lever or light). The DAD1 antagonist SCH-23390 and the DAD2/3 antagonist eticlopride reduced conditioned approach in all rats, but specifically reduced goal tracking in the saline pretreated rats and sign tracking in the nicotine pretreated rats. The non-selective DA antagonist flupenthixol reduced sign-tracking in nicotine rats at all doses tested; however, only the highest dose of flupenthixol reduced goal tracking in both nicotine and saline groups. The reductions in conditioned approach behavior, especially those by SCH-23390, were dissociated from simple motor suppressant effects of the antagonists. These experiments are the first to investigate the effects of dopaminergic drugs on the facilitation of sign-tracking engendered by nicotine and they implicate dopaminergic systems both in conditioned approach as well as the incentive-promoting effects of nicotine.

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Crossref · 10.1016/j.pbb.2014.08.012

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  1. Liu X Palmatier MI Caggiula AR Donny EC Booth S Gharib M Craven L Sved AF Cholinergic substrates of the reinforcement enhancing effects of nicotine Psychopharmacology Submitted 2007a 17019569

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Authors
Palmatier, M. I., Kellicut, M. R., Brianna Sheppard, A., Brown, R. W., & Robinson, D. L.
Affiliations
  • East Tennessee State University (US)
  • University of North Carolina at Chapel Hill (US)
Corresponding author
Palmatier, Matthew I.
Venue
Pharmacology Biochemistry and Behavior
Publisher
Elsevier BV
Published
2014-11
Volume
126
Pages
50-62
ISSN
0091-3057 (ISSN-L)
OpenAlex
W2045356156
Cited by
21
References
71
Citations by year
2025: 1 · 2024: 1 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 4 · 2018: 3 · 2017: 1 · 2016: 2 · 2015: 1
FWCI
0.61
Type
journal article
Language
en
Open access
Locations
  • Pharmacology Biochemistry and Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • Digital Commons - East Tennessee State University (East Tennessee State University) (submittedVersion)
  • UNC Libraries
Funders
  • East Tennessee State University — Office of Research and Sponsored Programs
  • NIAAA (P60 AA011605)
  • UNC Bowles Center for Alcohol Studies
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
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
nicotine, incentive motivation, sign-tracking, goal tracking, Pavlovian conditioned approach, dopamine antagonists, mesolimbic dopamine system, dopamine D1 receptor, D2/D3 dopamine receptors, SCH 23390, eticlopride, flupenthixol, psychostimulants
MeSH terms
Central Nervous System Stimulants, Animals, Benzazepines, Conditioning, Classical, Cues, Dose-Response Relationship, Drug, Drug Interactions, Flupenthixol, Male, Nicotine, Reinforcement, Psychology, Salicylamides, Dopamine Antagonists, Rats

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