Cited by 36Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeurotransmitter Receptor Influence on Behavior

Anxiolytic effects of nicotine in a rodent test of approach-avoidance conflict

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Cohen, Ami, Young, Robert W., Velazquez, Miguel A., Groysman, Mariya, Noorbehesht, Kavon, Ben-Shahar, Osnat M., Ettenberg, Aaron·2009·Psychopharmacology

Abstract

RATIONALE: Nicotine has been reported to produce both anxiolytic and/or anxiogenic effects in humans and animals. OBJECTIVES: This study examined whether pretreatment with nicotine would alter anxiety in a unique runway model of approach-avoidance conflict. MATERIALS AND METHODS: Food-restricted rats were trained to run a straight alley once a day to obtain food upon goal-box entry. Beginning on trial 11, food reward was followed by a series of five foot shocks (0.3-0.4 mA, 0.5 s) in the goal box. Non-shocked control rats continued to run for food only. The resulting association of the goal box with both a positive (food) and negative (foot shock) stimulus produced an approach-avoidance conflict (subjects exhibited "retreat behaviors" in which they would approach the goal box, stop, and then retreat back towards the start box). Once retreats were established, their sensitivity to nicotine pretreatment (0.0, 0.03, 0.045, 0.06, or 0.075 mg/kg, i.v.) was compared to saline. In subsequent tests, the effects of nicotine (0.06 or 0.03 mg/kg) were examined on spontaneous activity (locomotion) and center-square entries in an open field (anxiety). RESULTS: Doses of 0.06 and 0.075 mg/kg, but not lower doses of nicotine, reduced the number of runway retreats, and 0.06 mg/kg nicotine increased the number of open-field center entries relative to saline. No effects on locomotion were observed. CONCLUSIONS: Nicotine reduced approach-avoidance conflict and increased the rats' willingness to enter the center of an open field, suggesting that the drug can produce anxiolytic properties and that such effects may serve as an important factor in the persistence of smoking behavior.

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Authors
Cohen, A., Young, R. W., Velazquez, M. A., Groysman, M., Noorbehesht, K., Ben-Shahar, O. M., & Ettenberg, A.
Affiliations
University of California, Santa Barbara (US)
Corresponding author
Ettenberg, Aaron
Venue
Psychopharmacology
Published
2009-02-25
Volume
204
Issue
3
Pages
541-549
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W2139405337
Cited by
36
References
79
Citations by year
2026: 2 · 2023: 4 · 2021: 1 · 2020: 2 · 2018: 1 · 2016: 5 · 2015: 2 · 2014: 5 · 2013: 2 · 2012: 3
FWCI
1.61
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Psychopharmacology (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Institute on Drug Abuse (DA-05041, R01DA005041, R56DA005041)
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 › Neurotransmitter Receptor Influence on Behavior
Keywords
nicotine, anxiolytic effects, approach-avoidance conflict, runway models, anxiety, locomotion, footshock, food reward, smoking persistence, rats
MeSH terms
Animals, Conditioning, Operant, Conflict, Psychological, Dose-Response Relationship, Drug, Electroshock, Food, Food Deprivation, Injections, Intravenous, Male, Motivation, Motor Activity, Nicotine, Psychomotor Performance, Self Administration, Anti-Anxiety Agents, Rats, Sprague-Dawley, Nicotinic Agonists, Rats

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