Cited by 33Nicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology ResearchSmoking Behavior and Cessation

Nicotinic receptors modulating somatodendritic and terminal dopamine release differ pharmacologically

Reuben, Melanie, Boye, Sandra, Clarke, Paul B.S·2000·European Journal of Pharmacology

Abstract

Ascending dopaminergic and noradrenergic neurons possess somatodendritic and terminal nicotinic cholinoceptors in the rat. Each neuronal population expresses mRNA for several types of nicotinic cholinoceptor subunit, including alpha6 and beta3. In superfused rat striatal synaptosomes, epibatidine evoked release of [3H]dopamine with similar efficacy to ACh, whereas nicotine and cytisine were weaker (70+/-6% and 58+/-6%, respectively). The four agonists were equi-efficacious in evoking [3H]noradrenaline release from hippocampal synaptosomes. Nicotine-evoked synaptosomal release was tetrodotoxin-insensitive. Somatodendritic nicotinic cholinoceptors on dopaminergic neurons were studied using a dendrosomal [3H]dopamine release assay and also in locomotor activity tests. In both assays, nicotine appeared more efficacious than epibatidine. Furthermore, with repeated nicotine exposure, the acute locomotor stimulant response to nicotine increased, whereas the epibatidine response became undetectable. In conclusion, somatodendritic nicotinic cholinoceptors located on dopaminergic neurons appear to differ pharmacologically from those on striatal dopaminergic terminals and hippocampal noradrenergic terminals.

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Crossref · 10.1016/s0014-2999(00)00004-2

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  • α3β4-containing nAChRs are believed to play a major role in nicotine-evoked NE release from the hippocampus.

    “α3β4-containing nAChRs are believed to play a major role in nicotine-evoked NE release from the hippocampus [220, 221].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [221]

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Authors
Reuben, M., Boye, S., & Clarke, P. B. S.
Affiliations
McGill University (CA)
Corresponding author
Clarke, Paul B.S
Venue
European Journal of Pharmacology
Publisher
Elsevier BV
Published
2000-03
Volume
393
Issue
1-3
Pages
39-49
ISSN
0014-2999 (ISSN-L)
OpenAlex
W2041566830
Cited by
33
References
59
Citations by year
2022: 1 · 2021: 1 · 2020: 1
FWCI
1.45
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Stiftung VERUM
  • H. Lundbeck A/S
  • Fonds de Recherche du Québec - Santé
  • Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
nicotinic acetylcholine receptors, dopaminergic terminals, noradrenergic terminals, dopamine release, noradrenaline release, epibatidine, nicotine, cytisine, locomotor activity, synaptosomes, striatum, hippocampus, receptor pharmacology
MeSH terms
Animals, Corpus Striatum, Dopamine, Hippocampus, Male, Mecamylamine, Motor Activity, Neurons, Nicotine, Norepinephrine, Pyridines, Receptors, Nicotinic, Recombinant Proteins, Synaptosomes, Tetrodotoxin, Tritium, Rats, Sprague-Dawley, Nicotinic Agonists, Nicotinic Antagonists, Bridged Bicyclo Compounds, Heterocyclic, Rats

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