Evidence map›Paper›PMID 18817808›Full record

ArticlePharmacology, biochemistry, and behavior2009

Effects of the nicotinic receptor partial agonists varenicline and cytisine on the discriminative stimulus effects of nicotine in rats.

Mark G LeSage, David Shelley, Jason T Ross, F Ivy Carroll, William A Corrigall

Abstract read
In one paragraph

Article in Pharmacology, biochemistry, and behavior, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
2.8field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

51 citing papers in PubMed, 78 citations in OpenAlex.

  1. Trial
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  9. Article
  10. Stimulus functions of nicotine.Advances in pharmacology (San Diego, Calif.) · 2022
    Article
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  13. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Mark G LeSageMinneapolis Medical Research Foundation, 914 South Eighth Street, Minneapolis, MN 55404, USA. lesage002@umn.edu
David Shelley
Jason T Ross
F Ivy Carroll
William A Corrigall
Orthopaedic Research Foundation · USUniversity of Minnesota · USRTI International · US

Funding

DEVELOPMENT OF LIGANDS FOR NICOTINIC RECEPTORSR01DA012001 · NIDA · RESEARCH TRIANGLE INSTITUTE · PI CARROLL, FRANK IVY · 1999 to 2012
$4.8M
Modeling Behavioral Treatments for Stimulant AbuseR01DA020136 · NIDA · MINNEAPOLIS MEDICAL RESEARCH FDN, INC. · PI LESAGE, MARK G · 2005 to 2009
$908k
NIDA NIH HHS DA020136NIDA NIH HHS DA12002NIDA NIH HHS R01 DA012001NIDA NIH HHS R01 DA020136
6 · The paper itself

Abstract

The nicotinic partial agonist varenicline (VCL) is a recently approved medication for the treatment of tobacco dependence, yet very little preclinical research on this drug has been published. The present experiment examined the nicotinic partial agonist properties of VCL and its parent compound, cytisine (CYT), in a nicotine discrimination assay. Rats were trained to discriminate nicotine (0.4 mg/kg, s.c.) from saline using a two-lever discrimination procedure, followed by generalization and antagonism tests with VCL and CYT. Antagonism was examined across a range of nicotine doses. In generalization tests, VCL produced a maximum of 63% responding on the nicotine-appropriate lever, indicating partial generalization. In antagonism tests, VCL decreased the % responding on the nicotine-appropriate lever at 0.2 and 0.4 mg/kg nicotine, indicating antagonism of nicotine's discriminative stimulus effects. No dose of VCL produced significant effects on response rate. The two highest doses of CYT weakly substituted for nicotine, producing a maximum of 23% nicotine-appropriate responding. CYT produced a weak antagonism of the discrimination of moderate nicotine doses, but not of the training dose. These results demonstrate that VCL and CYT partially generalize to and partially antagonize nicotine's discriminative stimulus effects, consistent with a partial agonist mechanism of action.

Indexed as

AlkaloidsAnimalsAzocinesBenzazepinesConditioning, OperantData Interpretation, StatisticalDiscrimination, PsychologicalDose-Response Relationship, DrugGeneralization, StimulusMaleNicotineNicotinic AgonistsQuinolizidine AlkaloidsQuinolizinesQuinoxalinesRatsAlkaloidsAzocinesBenzazepinescytisineNicotineNicotinic Agonistsnicotinic receptor alpha4beta2Quinolizidine AlkaloidsQuinolizinesQuinoxalinesReceptors, NicotinicVarenicline

Identifiers

PMID18817808
PMCPMC2652851
OpenAlexW1963641568

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.