Cited by 169Neurotransmitter Receptor Influence on BehaviorNicotinic Acetylcholine Receptors StudySmoking Behavior and Cessation

Desensitization of the nicotine-induced mesolimbic dopamine responses during constant infusion with nicotine

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Benwell, Maureen E.M., Balfour, David J.K., Birrell, Claire E.·1995·British Journal of Pharmacology

Abstract

1. The effects of constant nicotine infusions (0.25, 1.0 and 4.0 mg kg-1 day-1) on extracellular dopamine levels in the nucleus accumbens (NAc) and on locomotor activity have been compared with the changes evoked by repeated daily injections (0.4 mg kg-1 day-1 for 5 days) of the drug. 2. The extracellular dopamine concentration in the NAc was significantly increased (P < 0.05) following a challenge dose of nicotine (0.4 mg kg-1, s.c.) in animals which had been pretreated with daily injections of the drug. This effect was accompanied by an enhanced locomotor response to nicotine. 3. The stimulant effects of nicotine on mesolimbic dopamine secretion and on locomotor activity were significantly inhibited (P < 0.01) by the prior administration of mecamylamine (2.0 mg kg-1, s.c.) but not by hexamethonium (2.0 mg kg-1, s.c.). 4. The constant infusion of nicotine at a rate of 1 and 4 but not 0.25 mg kg-1 day-1 abolished the sensitized dopamine response in the NAc to an injection of nicotine in animals pretreated with the drug. The locomotor responses to nicotine in the nicotine-pretreated rats were significantly attenuated by the infusion of nicotine at all 3 doses, although the nicotine induced locomotor activity, in the rats infused with 0.25 mg kg-1 day-1 was also significantly (P < 0.05) higher than that observed in the rats treated acutely with nicotine. 5. Significantly (P<0.01) enhanced mesolimbic dopamine responses, to a challenge injection of nicotine(0.4 mg kg-1, s.c.), were observed 2 and 7 days after termination of the infusion of nicotine (4 mg kg-1 day-1 for 14 days); locomotor responses were enhanced (P<0.01) 1, 2 and 7 days after termination of the infusion.6. The results suggest that sensitized mesolimbic dopamine responses to nicotine occur as a result of stimulation of centrally located nicotinic receptors but that these receptors may be desensitized during periods of chronic exposure to nicotine at doses which may be relevant to smoking.

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Crossref · 10.1111/j.1476-5381.1995.tb13248.x

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  • After chronic nicotine treatment, increased responses that reflect the higher receptor numbers are usually observed later.

    “Subsequently, however, increased responses reflecting the increased receptors are usually found (Rowell and Wonnacott, 1990;Benwell et al., 1995;Gopalakrishnan et al., 1996Gopalakrishnan et al., , 1997;;Buisson and Bertrand, 2001;Avila et al., 2003)”
  • Nicotine administration increases extracellular noradrenaline in various parts of the brain.

    “Nicotine administration also increases the extracellular noradrenaline in various parts of the brain (32–35);”

    From Tobacco addiction (2008) · cites this paper as [34]

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Research works printed but not linked: 5

  1. Balfour, D.J.K. pp. 453-481. Oxford, New York: Pergamon Press.
  2. Adlkofer, F. & Thurau, K. pp. 406-416. Basel: Birkhiuser.
  3. Wonnacott, S., Russell, M.A.H. & Stolerman, I.P. pp. 112-157. Oxford: Univ. Press.
  4. RANG, H. & DALE, M.M. (1992). In Pharmacology (2nd edition) pp. 142-181. Edinburgh, London: Churchill Livingston.
  5. Wonnacott, S., Russell, M.A.H. & Stolerman, I.P. pp. 374-418. Oxford: Univ. Press.

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Authors
Benwell, M. E. M., Balfour, D. J. K., & Birrell, C. E.
Affiliations
University of Dundee (GB)
Corresponding author
Benwell, Maureen E.M.
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
1995-01
Volume
114
Issue
2
Pages
454-460
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W2155263358
Cited by
169
References
32
Citations by year
2025: 2 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 5 · 2019: 2 · 2018: 3 · 2017: 1 · 2016: 3 · 2015: 8 · 2014: 3 · 2013: 4 · 2012: 4
FWCI
2.13
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
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, nicotinic receptor desensitization, mesolimbic dopamine system, nucleus accumbens, locomotor activity, nicotine sensitization, mecamylamine, hexamethonium, smoking
MeSH terms
Animals, Dopamine, Extracellular Space, Homovanillic Acid, Limbic System, Male, Mecamylamine, Motor Activity, Nicotine, 3,4-Dihydroxyphenylacetic Acid, Infusion Pumps, Implantable, Rats, Sprague-Dawley, Microdialysis, Hexamethonium, Rats

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