Cited by 85Nicotinic Acetylcholine Receptors StudyTreatment of Major DepressionSmoking Behavior and Cessation

Antidepressant-like effects of the subtype-selective nicotinic acetylcholine receptor agonist, SIB-1508Y, in the learned helplessness rat model of depression

Ferguson, Susan M., Brodkin, Jesse D., Kenneth Lloyd, G., Menzaghi, Frédérique·2000·Psychopharmacology

Abstract

Rationale Epidemiological studies of smokers suggest that there is a link between nicotine and depression. Nonetheless, few studies have examined the potential use of nicotinic ligands in the treatment of depression.Objectives The goal of this study was to evaluate the effects of SIB-1508Y, a novel subtype-selective ligand for high affinity nicotinic acetylcholine receptors (nAChRs), in the learned helplessness model of depression in rats.Methods In this model, exposure to inescapable foot-shock produces a lasting deficit in escape responses emitted in a subsequent conditioned avoidance procedure (learned helplessness). The effect of SIB-1508Y on learned helplessness was compared to the clinically used antidepressants, imipramine and fluoxetine, and the non-selective nAChR ligand, nicotine.Results Similarly to imipramine and fluoxetine, subchronic treatment (5 days) with SIB-1508Y reversed the escape deficit in the learned helplessness model in a dose dependent manner. The effect of SIB-1508Y on learned helplessness was still apparent 1 week following drug administration and was also maintained after 4 weeks of daily administration. In contrast, while nicotine was able to attenuate the learned helplessness deficit, this trend only reached statistical significance after chronic administration. The non-competitive ion channel blocker mecamylamine increased escape failures when administered alone and blocked the effects of SIB-1508Y but not imipramine. SIB- 1508Y also produced an increase in avoidance responding, which suggests an enhancement of learning.Conclusion These results not only suggest a role for nAChRs in the development of a depressive-like syndrome, but also that subtype-selective nAChR agonists, such as SIB-1508Y, may offer a novel therapeutic approach to the treatment of depression.

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Crossref · 10.1007/s002130000531

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Authors
Ferguson, S. M., Brodkin, J. D., Kenneth Lloyd, G., & Menzaghi, F.
Venue
Psychopharmacology
Published
2000-08-29
Volume
152
Issue
3
Pages
295-303
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W2071894558
Cited by
85
References
31
Citations by year
2025: 1 · 2022: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 7 · 2015: 4 · 2014: 4 · 2013: 5 · 2012: 2
FWCI
0.96
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
nicotinic acetylcholine receptors, subtype-selective agonists, depression, learned helplessness, nicotine, mecamylamine, imipramine, fluoxetine, antidepressant effects, escape behavior, avoidance learning
MeSH terms
Animals, Antidepressive Agents, Avoidance Learning, Depression, Dose-Response Relationship, Drug, Imipramine, Male, Mecamylamine, Nicotine, Pyridines, Pyrrolidines, Rats, Sprague-Dawley, Nicotinic Agonists, Rats

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