Cited by 123Smoking Behavior and CessationNicotinic Acetylcholine Receptors StudyNeurotransmitter Receptor Influence on Behavior

Operant responding for conditioned and unconditioned reinforcers in rats is differentially enhanced by the primary reinforcing and reinforcement-enhancing effects of nicotine

Chaudhri, Nadia, Caggiula, Anthony R., Donny, Eric C., Booth, Sheri, Gharib, Maysa, Craven, Laure, Palmatier, Matthew I., Liu, Xiu +1 more·2006·Psychopharmacology

Abstract

Rationale Nicotine self-administration in rats is modest when response-contingent nicotine infusions are delivered alone (primary reinforcement) but robust when nicotine infusions are combined with a mildly reinforcing non-pharmacological stimulus. Furthermore, response-independent (non-contingent) nicotine administration also elevates responding for that same non-pharmacological stimulus, suggesting that in addition to primary reinforcement, nicotine can enhance the incentive value of other reinforcers.Objectives In this study, we tested the hypothesis that the reinforcement-enhancing effects of non-contingent nicotine are more dependent on the reinforcing strength of the non-pharmacological stimulus than are the effects of contingent nicotine.Materials and methods A weakly reinforcing light-tone stimulus was established as a conditioned reinforcer by repeated pairings with sucrose for some rats, or by delivery in an explicitly unpaired design with sucrose to other rats. Subsequently, both groups lever pressed for the stimulus with contingent nicotine, non-contingent nicotine (0.06 mg kg(-1) per infusion, freebase), or non-contingent saline, according to fixed ratio and progressive ratio reinforcement schedules.Results Compared to sucrose-unpaired training, repeated association with sucrose established the light-tone stimulus as a robust conditioned reinforcer. Contingent and non-contingent nicotine equally elevated responding for this conditioned stimulus. Conversely, for the less reinforcing (sucrose-unpaired) stimulus contingent nicotine more effectively elevated behavior compared to non-contingent nicotine.Conclusions The reinforcement-enhancing effect of nicotine increases behavior controlled by both conditioned and unconditioned reinforcers; however, for less salient stimuli associative processes derived from the primary reinforcing effects of contingent nicotine may also be important. These data suggest that nicotine present in tobacco may differentially modulate stimulus-driven behavior in smokers.

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Crossref · 10.1007/s00213-006-0522-0

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Authors
Chaudhri, N., Caggiula, A. R., Donny, E. C., Booth, S., Gharib, M., Craven, L., Palmatier, M. I., Liu, X., & Sved, A. F.
Affiliations
University of Pittsburgh (US)
Corresponding author
Chaudhri, Nadia
Venue
Psychopharmacology
Published
2006-09-22
Volume
189
Issue
1
Pages
27-36
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W2071290023
Cited by
123
References
48
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2022: 2 · 2021: 4 · 2020: 5 · 2019: 5 · 2018: 7 · 2017: 6 · 2016: 10 · 2015: 8 · 2014: 13 · 2013: 10 · 2012: 8
FWCI
3.95
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Pittsburgh
  • National Institute on Drug Abuse (DA-12655, R01DA010464, DA-10464, R01DA012655)
Topics
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
nicotine, conditioned reinforcer, primary reinforcement, nicotine self-administration, sucrose, incentive value
MeSH terms
Animals, Association Learning, Behavior, Animal, Conditioning, Operant, Male, Motivation, Nicotine, Reinforcement, Psychology, Reinforcement Schedule, Self Administration, Sucrose, Time Factors, Tobacco Use Disorder, Rats, Sprague-Dawley, Nicotinic Agonists, Rats

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