Evidence map›Paper›PMID 21088247›Full record

ArticleThe Journal of pharmacology and experimental therapeutics2011

N-substituted benztropine analogs: selective dopamine transporter ligands with a fast onset of action and minimal cocaine-like behavioral effects.

Su-Min Li, Theresa A Kopajtic, Matthew J O'Callaghan, Gregory E Agoston, Jianjing Cao, Amy Hauck Newman, Jonathan L Katz

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 2011. 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
1.2field-weighted citation impact, top 26% 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, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Dopamine Transporter Dynamics ofThe Journal of pharmacology and experimental therapeutics · 2018
    Article
  6. Article
  7. Article
  8. Article
  9. CTDP-32476: A Promising Agonist Therapy for Treatment of Cocaine Addiction.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2017
    Article
  10. Article
  11. Review
  12. Cocaine Antagonists; Studies on Cocaine Self-Administration.Journal of alcoholism and drug dependence · 2015
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

7 authors at 2 institutions in 1 country.

Su-Min LiSections, Medications Discovery Research Branch, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, Baltimore, Maryland 21224, USA.
Theresa A Kopajtic
Matthew J O'Callaghan
Gregory E Agoston
Jianjing Cao
Amy Hauck Newman
Jonathan L Katz
National Institute on Drug Abuse · USNational Institutes of Health · US

Funding

Novel Probes for the Monoamine TransportersZIADA000389 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI NEWMAN, AMY HAUCK · 2009 to 2025
$14.4M
Basic Dopamine Transporter Mechanisms Of CocaineZIADA000103 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI KATZ, JONATHAN L · 2009 to 2016
$4.6M
Intramural NIH HHS
6 · The paper itself

Abstract

Previous studies suggested that differences between the behavioral effects of cocaine and analogs of benztropine were related to the relatively slow onset of action of the latter compounds. Several N-substituted benztropine analogs with a relatively fast onset of effects were studied to assess whether a fast onset of effects would render the effects more similar to those of cocaine. Only one of the compounds increased locomotor activity, and the increases were modest compared with those of 10 to 20 mg/kg cocaine. In rats trained to discriminate 10 mg/kg cocaine from saline none of the compounds produced more than 40% cocaine-like responds up to 2 h after injection. None of the compounds produced place-conditioning when examined up to 90 min after injection, indicating minimal abuse liability. The compounds had 5.6 to 30 nM affinities at the dopamine transporter (DAT), with uniformly lower affinities at norepinephrine and serotonin transporters (from 490-4600 and 1420-7350 nM, respectively). Affinities at muscarinic M(1) receptors were from 100- to 300-fold lower than DAT affinities, suggesting minimal contribution of those sites to the behavioral effects of the compounds. Affinities at histaminic H(1) sites were from 11- to 43-fold lower than those for the DAT. The compounds also had affinity for sigma, 5-hydroxytryptamine(1) (5-HT(1)), and 5-HT(2) receptors that may have contributed to their behavioral effects. Together, the results indicate that a slow onset of action is not a necessary condition for reduced cocaine-like effects of atypical DAT ligands and suggest several mechanisms that may contribute to the reduced cocaine-like efficacy of these compounds.

Indexed as

AnimalsBehavior, AnimalBenztropineCocaineConditioning, PsychologicalDiscrimination LearningDopamine Plasma Membrane Transport ProteinsDose-Response Relationship, DrugGuinea PigsLigandsMaleMotor ActivityRatsRats, Sprague-DawleySelf AdministrationBenztropineCocaineDopamine Plasma Membrane Transport ProteinsLigands

Identifiers

PMID21088247
PMCPMC3033723
OpenAlexW1985234269

What OpenQuestion holds

Textmetadata
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.