Cited by 226Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeuroscience and Neuropharmacology Research

Decreased Signs of Nicotine Withdrawal in Mice Null for the β4 Nicotinic Acetylcholine Receptor Subunit

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Salas, Ramiro, Pieri, Fredalina, De Biasi, Mariella·2004·The Journal of Neuroscience

Abstract

Withdrawal from chronic exposure to nicotine, the main addictive component of tobacco, produces distinctive symptoms in humans. The appearance of these symptoms is a major deterrent when people try to quit smoking. To study which type of nicotine receptor is relevant for the onset of the withdrawal syndrome, we used a mouse model of nicotine withdrawal. Wild-type mice and mice null for the β4 (β4-/-) or the β2 (β2-/-) nicotinic acetylcholine receptor subunits were implanted with osmotic minipumps delivering 24 mg · kg -1 · d -1 nicotine for 13 d. Subsequently, a single intraperitoneal injection of the nicotinic receptor antagonist mecamylamine induced behavioral symptoms of withdrawal measured as increased grooming, chewing, scratching, and shaking, plus the appearance of some unique behaviors such as jumping, leg tremors, and cage scratching. Mecamylamine injection triggered comparable withdrawal signs in wild-type and in β2-/- mice, whereas the β4-/- mice displayed significantly milder somatic symptoms. In addition, nicotine withdrawal produced hyperalgesia in wild-type but not β4-/- mice. Finally, chronic nicotine produced an increase in epibatidine binding in several areas of the brain in both wild-type and in β4-/- mice, but such receptor upregulation did not correlate with the severity of withdrawal signs. Our results demonstrate a major role for β4-containing nicotinic acetylcholine receptors in the appearance of nicotine withdrawal symptoms. In contrast, the β2 subunit does not seem to greatly influence this phenomenon. We also show that the upregulation of epibatidine binding sites attributable to chronic nicotine, an effect associated with β2-containing receptors, is probably not related to the mechanisms underlying withdrawal.

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Crossref · 10.1523/jneurosci.1939-04.2004

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  • β4 knockout mice show no somatic signs of nicotine withdrawal or hyperalgesia after mecamylamine-precipitated withdrawal.

    “β4 KO mice exhibit no somatic signs of nicotine withdrawal or hyperalgesia following mecamylamine-induced withdrawal (Salas et al. 2004).”

    From Nicotine Withdrawal (2015) · cites this paper as Salas et al. 2004

    The Results section reports fewer somatic signs in nicotine-treated β4 knockout mice after mecamylamine, not no signs. It also reports no hyperalgesia in β4 knockout mice, but the Animals section specifies that the hyperalgesia tests were performed after interruption of nicotine infusion, rather than after mecamylamine-precipitated withdrawal. Page numbers are not provided in the supplied copy. (LLM, conf=0.94)

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  • β2 knockout mice have somatic withdrawal signs and abstinence-induced hyperalgesia comparable to wild-type mice.

    “β2 KO mice exhibit levels of somatic signs of withdrawal and abstinence-induced hyperalgesia comparable to those of WT mice (Salas et al. 2004).”

    From Nicotine Withdrawal (2015) · cites this paper as Salas et al. 2004

    The Results section reports that β2 knockout mice had somatic withdrawal scores similar to nicotine-treated controls after mecamylamine injection. Its hyperalgesia results compare wild-type mice with β4 knockout mice, not β2 knockout mice, so the claimed comparison of abstinence-induced hyperalgesia is not supported (page not specified in our copy). (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Somatic signs of withdrawal are preserved in mice lacking β2 or α6 nAChR subunits.

    “Interestingly, somatic signs of withdrawal are preserved in mice lacking the β2 or the α6 nAChR subunits [11, 172]”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [11]

  • Absence of α2, α5, or β4 nAChR subunits abolishes somatic manifestations of nicotine withdrawal.

    “The MHb/IPN express nAChRs comprising the α2 (IPN), α5, and/or β4 nAChR subunits and absence of any one of those nAChR subunits abolishes the somatic manifestations of nicotine withdrawal [11, 81, 170].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [11]

  • Rodents chronically exposed to nicotine undergo a characteristic withdrawal syndrome that can occur spontaneously or be precipitated by mecamylamine.

    “Rodents chronically exposed to nicotine undergo a characteristic withdrawal syndrome which develops spontaneously, after removing the nicotine source, or can be precipitated by administration of a nAChR antagonist such as mecamylamine [7, 11, 81, 163–166].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [11]

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Research works printed but not linked: 1

  1. Booker TK, Tritto T, Colman J, Cui C, Collins AC, Heinemann SF (2000) Beta3 subunits in regulation of anxiety: analysis of beta3 null mutant mice. In: The 20th Neuropharmacology Conference, p 65. New Orleans: Elsevier Science.

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Authors
Salas, R., Pieri, F., & De Biasi, M.
Affiliations
Baylor College of Medicine (US)
Venue
The Journal of Neuroscience
Published
2004-11-10
Volume
24
Issue
45
Pages
10035-10039
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1989152115
Cited by
226
References
36
Citations by year
2025: 3 · 2024: 3 · 2023: 7 · 2022: 2 · 2021: 5 · 2020: 13 · 2019: 7 · 2018: 9 · 2017: 11 · 2016: 13 · 2015: 21 · 2014: 26 · 2013: 16 · 2012: 13
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Drug Abuse (DA017173, R01DA017173)
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 withdrawal, nicotinic acetylcholine receptors, beta4 subunit, beta2 subunit, mecamylamine, epibatidine binding, chronic nicotine exposure, hyperalgesia, receptor up-regulation, smoking cessation, mouse model
MeSH terms
Animals, Behavior, Animal, Female, Genotype, Grooming, Hyperalgesia, Male, Mastication, Mecamylamine, Mice, Inbred C57BL, Nerve Tissue Proteins, Nicotine, Pyridines, Receptors, Nicotinic, Substance Withdrawal Syndrome, Tremor, Infusion Pumps, Implantable, Mice, Knockout, Bridged Bicyclo Compounds, Heterocyclic, Mice

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