Evidence map›Paper›PMID 23995301›Full record

ArticlePsychopharmacology2014

Acute and chronic effects of the M1/M4-preferring muscarinic agonist xanomeline on cocaine vs. food choice in rats.

Morgane Thomsen, Brian S Fulton, S Barak Caine

Open access · greenAbstract read
In one paragraph

Article in Psychopharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

24 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  5. Article
  6. Review
  7. [Pharmacological reports : PR · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. MPharmacology research & perspectives · 2022
    Article
  12. Effects of muscarinic MNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  13. Effects of muscarinic MPsychopharmacology · 2018
    Article
  14. Heroin and saccharin demand and preference in rats.Drug and alcohol dependence · 2017
    Article
  15. Muscarinic receptor MDrug and alcohol dependence · 2017
    Article
  16. Effects of Acute and Chronic Treatments with Dopamine DThe Journal of pharmacology and experimental therapeutics · 2017
    Article
  17. Article
  18. Review
  19. Review
  20. Article
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

3 authors at 2 institutions in 1 country.

Morgane ThomsenAlcohol and Drug Abuse Research Center, McLean Hospital/Harvard Medical School, Belmont, MA, USA, mthomsen@mclean.harvard.edu.
Brian S Fulton
S Barak Caine
Harvard University · USMcLean Hospital · US

Funding

Selective Muscarinic Receptor Ligands as Targets for Cocaine Addiction MedicationR00DA027825 · NIDA · MCLEAN HOSPITAL · PI THOMSEN, MORGANE HERMANN · 2012 to 2014
$710k
Selective Muscarinic Receptor Ligands as Targets for Cocaine Addiction MedicationK99DA027825 · NIDA · MCLEAN HOSPITAL · PI THOMSEN, MORGANE HERMANN · 2010 to 2011
$247k
NIDA NIH HHS DA027825NIDA NIH HHS K99 DA027825NIDA NIH HHS R00 DA027825
6 · The paper itself

Abstract

rationaleWe previously showed that the M1/M4-preferring muscarinic agonist xanomeline can acutely attenuate or eliminate cocaine self-administration in mice.

objectiveMedications used to treat addictions will arguably be administered in (sub)chronic or repeated regimens. Tests of acute effects often fail to predict chronic effects, highlighting the need for chronic testing of candidate medications.

methodsRats were trained to lever press under a concurrent FR5 FR5 schedule of intravenous cocaine and food reinforcement. Once baseline behavior stabilized, the effects of 7 days once-daily injections of xanomeline were evaluated.

resultsXanomeline pretreatment dose-dependently (1.8-10 mg/kg/day) shifted the dose-effect curve for cocaine rightward (up to 5.6-fold increase in A 50), with reallocation of behavior to the food-reinforced lever. There was no indication of tolerance, rather effects grew over days. The suppression of cocaine choice appeared surmountable at high cocaine doses, and xanomeline treatment did not significantly decrease total-session cocaine or food intake.

conclusionsIn terms of xanomeline's potential for promoting abstinence from cocaine in humans, the findings were mixed. Xanomeline did produce reallocation of behavior from cocaine to food with a robust increase in food reinforcers earned at some cocaine/xanomeline dose combinations. However, effects appeared surmountable, and food-maintained behavior was also decreased at some xanomeline/cocaine dose combinations, suggesting clinical usefulness may be limited. These data nevertheless support the notion that chronic muscarinic receptor stimulation can reduce cocaine self-administration. Future studies should show whether ligands with higher selectivity for M1 or M1/M4 subtypes would be less limited by undesired effects and can achieve higher efficacy.

Indexed as

AnimalsBehavior, AddictiveChoice BehaviorCocaineConditioning, OperantDopamine Uptake InhibitorsDose-Response Relationship, DrugFood PreferencesMaleMuscarinic AgonistsPyridinesRats, Sprague-DawleyReceptor, Muscarinic M1Receptor, Muscarinic M4Reinforcement, PsychologySelf AdministrationCocaineDopamine Uptake InhibitorsMuscarinic AgonistsPyridinesReceptor, Muscarinic M1Receptor, Muscarinic M4Thiadiazolesxanomeline

Identifiers

PMID23995301
PMCPMC3947149
OpenAlexW1981762957

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.