Cited by 38Neuropeptides and Animal PhysiologyStress Responses and CortisolNicotinic Acetylcholine Receptors Study

Corticotropin releasing factor antagonist, α-helical CRF9–41, reverses nicotine-induced conditioned, but not unconditioned, anxiety

Tucci, Sonia, Cheeta, Survjit, Seth, Pallab, File, Sandra E.·2003·Psychopharmacology

Abstract

Rationale Unconditioned anxiogenic effects of nicotine have been observed in the social interaction (SI) test 5 min after injection of a low dose and both 5 min and 30 min after injection of a high dose. Conditioned anxiety has also been observed 24 h after testing in the SI with a high dose of nicotine.Objectives In order to determine whether these three anxiogenic effects shared a common mechanism, we investigated the role of corticotropin releasing factor (CRF). We therefore examined whether the CRF antagonist alpha-helical CRF(9-41) could block these three anxiogenic effects of nicotine.Methods To test the unconditioned anxiogenic effects, pairs of male rats were tested in SI 5 min after s.c. vehicle or nicotine (0.1 mg/kg) or 30 min after s.c. vehicle or nicotine (0.45 mg/kg), and 30 min after i.c.v. artificial cerebrospinal fluid (aCSF) or alpha-helical CRF(9-41). To test conditioned anxiety, rats were exposed to the SI test on day 1, 5 min after vehicle or nicotine (0.1 mg/kg). On day 2, they were re-tested in SI 30 min after i.c.v. aCSF or alpha-helical CRF(9-41) (5 microg).Results alpha-Helical CRF(9-41) did not block the unconditioned anxiogenic effect of either dose of nicotine. Nicotine (0.1 mg/kg, 5 min) elicited a conditioned anxiogenic response that was significantly reversed by alpha-helical CRF(9-41). The CRF antagonist alone had no effect.Conclusions CRF is an important mediator of the conditioned anxiety to nicotine, but may not play a role in mediating the acute anxiogenic effects.

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Crossref · 10.1007/s00213-003-1403-4

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Authors
Tucci, S., Cheeta, S., Seth, P., & File, S. E.
Affiliations
King's College London (GB)
Corresponding author
Tucci, Sonia
Venue
Psychopharmacology
Published
2003-04-01
Volume
167
Issue
3
Pages
251-256
ISSN
0033-3158 (ISSN-L)
OpenAlex
W2161481282
Cited by
38
References
52
Citations by year
2023: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 3 · 2014: 1 · 2013: 4 · 2012: 2
FWCI
0.92
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Consejo Nacional para Investigaciones Científicas y Tecnológicas
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
Keywords
nicotine, conditioned anxiety, corticotropin-releasing factor, alpha-helical CRF(9-41), CRF antagonist, social interaction test, anxiogenic effects
MeSH terms
Animals, Anxiety, Conditioning, Psychological, Corticotropin-Releasing Hormone, Dose-Response Relationship, Drug, Drug Administration Routes, Drug Interactions, Interpersonal Relations, Male, Motor Activity, Nicotine, Peptide Fragments, Time Factors, Nicotinic Agonists, Rats

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