Cited by 71Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeurotransmitter Receptor Influence on Behavior

Social isolation modifies nicotine's effects in animal tests of anxiety

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Cheeta, Survjit, Irvine, Elaine, File, Sandra E·2001·British Journal of Pharmacology

Abstract

These experiments determined whether the housing conditions of rats influenced the effects of nicotine in two animal tests of anxiety, social interaction and elevated plus‐maze tests. In animals housed singly for 7 days, (−)nicotine (0.025 mg kg−1 s.c.) was ineffective, but 0.05, 0.1 and 0.25 mg kg−1 (s.c.) significantly increased the time spent in social interaction, without changing locomotor activity, thus indicating anxiolytic actions. (−)Nicotine (0.45 mg kg−1 s.c.) significantly reduced social interaction, indicating an anxiogenic effect. However, in group‐housed animals, (−)nicotine (0.025 mg kg−1 s.c.) had a significant anxiolytic effect in the social interaction test, but 0.01, 0.05, 0.1, 0.25 and 0.45 mg kg−1 were ineffective. (−)Nicotine (1 mg kg−1) reduced motor activity and social interaction in the group‐housed animals. In the elevated plus‐maze, the time‐course and the dose‐response curve to nicotine were investigated. In both singly‐ and group‐housed rats, (−) nicotine (0.1 – 0.45 mg kg−1 s.c.) decreased the per cent entries into, and per cent time spent on, the open arms, indicating anxiogenic effects. The housing condition influenced the time course, with significant effects at 5 and 30 min after injection in group‐housed rats, and significant effects at 30 and 60 min in singly‐housed rats. In the social interaction test there was no difference in the scores of the first and last rats removed from group cages, whereas the order of removal from the cages did affect the scores in the elevated plus‐maze. These results provide further evidence that the two animal tests model distinct states of anxiety, and show how social isolation powerfully modifies both anxiolytic and anxiogenic effects of nicotine. British Journal of Pharmacology (2001) 132, 1389–1395; doi:10.1038/sj.bjp.0703991

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  1. ROYAL COLLEGE OF PHYSICIANS. (2000). Nicotine addiction in Britain: A report of the tobacco advisory group. Suolk: The Lavenham Press Ltd.

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Authors
Cheeta, S., Irvine, E., & File, S. E.
Affiliations
King's College London (GB)
Corresponding author
File, Sandra E
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2001-04
Volume
132
Issue
7
Pages
1389-1395
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W2033382715
Cited by
71
References
53
Citations by year
2026: 2 · 2025: 1 · 2024: 4 · 2023: 3 · 2021: 3 · 2020: 5 · 2019: 1 · 2018: 2 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 2
FWCI
1.86
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
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, social isolation, housing conditions, anxiety, anxiolytic effects, anxiogenic effects, social interaction test, elevated plus maze, rats, locomotor activity, dose-response relationship, time course
MeSH terms
Animals, Anxiety, Behavior, Animal, Dose-Response Relationship, Drug, Male, Motor Activity, Nicotine, Social Behavior, Social Isolation, Time Factors, Maze Learning, Rats

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