Cited by 128Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeuroscience and Neuropharmacology Research

Altered Anxiety-Related Responses in Mutant Mice Lacking the β4 Subunit of the Nicotinic Receptor

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Salas, Ramiro, Pieri, Fredalina, Fung, Beryl, Dani, John A., De Biasi, Mariella·2003·The Journal of Neuroscience

Abstract

Nicotine, acting at nicotinic acetylcholine receptors (nAChRs), is the primary addictive component of tobacco. Smokers often report an anxiolytic effect of cigarettes. This relief of anxiety, attributed to nicotine, is an important contributor to relapse when smokers try to quit. Hence, the study of the anxiolytic effects of nicotine is important for understanding the mechanisms underlying nicotine addiction. Mammalian nAChRs are pentameric ion channels usually composed of alpha andbeta subunits. Taking advantage of beta4-homozygous-null mice (beta4-/-), we examined the role of the nAChR beta4 subunit in anxiety-related behaviors. The beta4-/- mice behaved as though they were less anxious than wild-type littermates on the elevated-plus and staircase mazes, tests that measure anxiety-related behaviors. To obtain an independent, physiological indication of the stress produced by several tests, we measured changes in heart rate using telemetry. Consistently with the behavioral phenotype, beta4-/- mice had a smaller heart rate increase in the elevated-plus maze than did wild-type littermates. In contrast, during social isolation, a separate test for anxiety,beta4-/- mice exhibited a greater increase in heart rate than did wild-type littermates. Finally, beta4-/- mice were indistinguishable from their wild-type littermates in the open field, the light/dark box, and the mirrored chamber. The overall results demonstrate that beta4-containing (beta4*) nAChRs influence behavioral responses during anxiety-related tests, and that this effect depends on the type of anxiety-provoking experience. Through their influence on anxiety-related behavior, beta4* nAChRs might influence both tobacco consumption and smoking relapse.

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Crossref · 10.1523/jneurosci.23-15-06255.2003

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  • Mice lacking the β4 nAChR subunit show less anxiety-like behavior at baseline.

    “knockout mice lacking the β4 subunit show less anxiety-like behaviors at baseline (Salas et al. 2003)”

    From Mechanisms of Nicotine Addiction (2021) · cites this paper as Salas et al. 2003

    The Results report that β4-knockout mice behaved as though they were less anxious in the elevated-plus maze, and the Introduction also cites increased climbing in the staircase maze. But the effect was test-specific: behavior was unchanged in three other tests, and social isolation produced a stronger anxiety-related response. The unqualified claim of less anxiety-like behavior at baseline overgeneralizes those findings. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The MHb/IPN axis is emerging as a brain circuit involved in processing anti-reward stimuli and nicotine withdrawal.

    “which, as discussed in section 2.3, is emerging as a brain circuit involved in the processing of anti-reward stimuli and nicotine withdrawal [11, 80, 222].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [222]

  • α3 and β4 nAChR subunits are expressed at high levels in the MHb/IPN axis.

    “the α3 and β4 nAChR subunits are expressed at high levels in the MHb/IPN axis [222–224]”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [222]

  • β4 knockout mice showed reduced anxiety in the elevated plus maze compared to wild-type littermates and reduced heart rate in this paradigm.

    “Salas, Pieri, Fung, Dani, and De Biasi (2003) showed that β4 KO mice showed reduced anxiety in the EPM compared to WT littermates as well as reduced heart rate in this paradigm.”

    From Nicotine addiction and psychiatric disorders (2015) · cites this paper as Salas et al. (2003)

  • β4 knockout animals showed higher heart rate in the social isolation anxiety paradigm.

    “However, β4 KO animals showed higher heart rate in another anxiety paradigm, social isolation.”

    From Nicotine addiction and psychiatric disorders (2015) · cites this paper as Salas et al. (2003)

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Cites

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Research works printed but not linked: 4

  1. Booker TK, Tritto T, Colman J, Cui C, Collins AC, Heinemann SF ( 2000) β3 subunits in regulation of anxiety: analysis of β3-null mutant mice. In: The 20th Neuropharmacology Conference, p 65. New Orleans: Elsevier Science.
  2. De Biasi M ( 2001) Heart rate variability studies in nicotinic mutant mice. Paper presented at 19th Annual Houston Conference on Biomedical Engineering Research, Houston, Feb 8–9, 2001.
  3. Friedman BH, Thayer JF ( 1998) Anxiety and autonomic flexibility: a cardiovascular approach. Biol Psychol 49: 303–323. [DOI] [PubMed] [Google Scholar]
  4. Yu W, Mackey LY, Xu W, Beaudet AL, De Biasi M ( 2000) Bradycardia and ventricular repolarization defects in mice lacking the α3 subunit of neuronal nicotinic acetylcholine receptors. In: The 10th Neuropharmacology Conference, p 113. New Orleans, Nov 2–4, 2000.

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Authors
Salas, R., Pieri, F., Fung, B., Dani, J. A., & De Biasi, M.
Affiliations
Baylor College of Medicine (US)
Venue
The Journal of Neuroscience
Published
2003-07-16
Volume
23
Issue
15
Pages
6255-6263
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W4296569371
Cited by
128
References
84
Citations by year
2025: 1 · 2024: 1 · 2023: 6 · 2022: 3 · 2021: 6 · 2020: 6 · 2019: 3 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 13 · 2014: 5 · 2013: 4 · 2012: 6
FWCI
2.30
Type
journal article
Language
en
Open access
Locations
Journal of Neuroscience (publishedVersion)
Funders
  • American Heart Association
  • National Institute on Drug Abuse (DA-12661, DA09411, R01DA009411, P01DA012661)
  • National Institute of Neurological Disorders and Stroke (NS 21229, R37NS021229, R01NS021229)
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
nicotinic acetylcholine receptors, beta4 subunit, anxiety-like behavior, nicotine dependence, smoking relapse, heart rate, stress response, social isolation, elevated plus maze, light-dark box

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