Cited by 79Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeuroscience and Neuropharmacology Research

Dissociation of the apparent relationship between nicotine tolerance and up-regulation of nicotinic receptors

Collins, Allan C., Romm, Elena, Wehner, Jeanne M.·1990·Brain Research Bulletin

Abstract

Saline or nicotine (0.8 mg/kg/hr) was administered chronically to rats via subcutaneous infusion for 7 days. After chronic treatment, the effects of a challenge dose of nicotine, injected subcutaneously, on open-field activity and body temperature were measured. Nicotine responses were measured 2 hours after infusion had been stopped (day 0) or 1, 2, 4, 8, or 21 days after cessation of treatment. Brain nicotinic receptors were measured using nicotine binding or bungarotoxin binding in six brain regions. Tolerance to nicotine's effects on open-field activity and body temperature were observed; this tolerance was lost before the fourth day of withdrawal. Both nicotine and BTX binding were increased after chronic nicotine treatment. The return of the receptors to control values was dependent on brain region, but in general receptors were still increased at 4 days after withdrawal. The half-lives for receptors returning to normal were greater for nicotine binding compared to BTX binding. These results suggest that a relatively short-lived tolerance results from chronic nicotine infusion and that alterations in nicotinic receptors can be dissociated from behavioral tolerance.

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Crossref · 10.1016/0361-9230(90)90222-l

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Authors
Collins, A. C., Romm, E., & Wehner, J. M.
Affiliations
University of Colorado Boulder (US)
Corresponding author
Collins, Allan C.
Venue
Brain Research Bulletin
Publisher
Elsevier BV
Published
1990-09
Volume
25
Issue
3
Pages
373-379
ISSN
0361-9230 (ISSN-L)
OpenAlex
W2024560338
Cited by
79
References
3
Citations by year
2025: 1 · 2023: 1 · 2018: 1 · 2015: 4 · 2014: 2 · 2013: 3 · 2012: 2
FWCI
1.00
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Institut de Recherche pour le Développement
  • National Institutes of Health (5p50da005131-06)
  • National Institute on Drug Abuse (DA05131, DA 03194, R01DA003194, DA00116)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotine tolerance, nicotinic acetylcholine receptors, receptor up-regulation, nicotine withdrawal, bungarotoxin binding, nicotine binding, open field behavior, body temperature, receptor desensitization, receptor half-life
MeSH terms
Animals, Body Temperature, Bungarotoxins, Drug Tolerance, Female, Half-Life, Infusions, Intravenous, Iodine Radioisotopes, Kinetics, Motor Activity, Nicotine, Proteins, Rats, Inbred Strains, Receptors, Nicotinic, Substance Withdrawal Syndrome, Up-Regulation, Rats

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