Cited by 54Nicotinic Acetylcholine Receptors StudyNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Effect of nicotine, mecamylamine, and hexamethonium on shock-induced fighting, pain reactivity, and locomotor behaviour in rats

Rodgers, R. J.·1979·Psychopharmacology

Abstract

Three series of experiments were performed to evaluate possible nicotinic cholinergic influences on fighting behaviour in rats. Each series consisted of three tests (naive animals in each test); shock-induced fighting, pain threshold estimation and locomotor activity. In the first series, nicotine (0.25 -- 1.00 mg/kg) was found to produce a dose-dependent inhibition of fighting without altering shock thresholds. However, the highest dose used also significantly reduced rearing in the activity test. In the second series, mecamylamine (a centrally active antinicotinic) produced a facilitation of fighting at low doses (2.5 mg/kg) and an inhibition at higher doses (10 mg/kg). Whilst these effects were unrelated to changes in shock thresholds, the high dose resulted in a reduction in both horizontal activity and rearing. Finally, as a control for possible peripheral effects of nicotinic blockage, a third series examined the behavioural effects of hexamethonium. Low doses of this compound (2.25 -- 4.5 mg/kg) had little effect on fighting whilst higher doses (9 -- 18 mg/kg) attenuated these responses. Interestingly, although hexamethonium had no effect on shock thresholds, the highest dose (18 mg/kg) produced a facilitation of horizontal activity. Results are discussed in relation to the hypothesis of central nicotinic cholinergic inhibition of agonistic behaviour.

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Crossref · 10.1007/bf00431996

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Authors
Rodgers, R. J.
Affiliations
University of Bradford (GB)
Corresponding author
Rodgers, R. J.
Venue
Psychopharmacology
Published
1979-11
Volume
66
Issue
1
Pages
93-98
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W2070075734
Cited by
54
References
32
Citations by year
2021: 1 · 2019: 1 · 2015: 3 · 2014: 2 · 2013: 1
FWCI
1.60
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
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotine, mecamylamine, hexamethonium, agonistic behavior, pain threshold, locomotor activity, rearing behavior
MeSH terms
Aggression, Animals, Electroshock, Hexamethonium Compounds, Humans, Male, Mecamylamine, Motor Activity, Nicotine, Pain, Rats

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