Evidence map›Paper›PMID 22093952›Full record

ArticleMolecular pain2011

Functional characterization and analgesic effects of mixed cannabinoid receptor/T-type channel ligands.

Haitao You, Vinicius M Gadotti, Ravil R Petrov, Gerald W Zamponi, Philippe Diaz

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Neuropathic pain; what we know and what we should do about it.Frontiers in pain research (Lausanne, Switzerland) · 2023
    Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Jekyll and Hide: The two faces of amyloid β.Communicative & integrative biology · 2012
    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

5 authors at 2 institutions in 2 countries.

Haitao YouDepartment of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary, Canada.
Vinicius M Gadotti
Ravil R Petrov
Gerald W Zamponi
Philippe Diaz
University of Calgary · CAUniversity of Montana · US

Funding

Core Laboratory for Neuromolecular ProductionP30NS055022 · NINDS · UNIVERSITY OF MONTANA · PI THOMPSON, CHARLES MARK · 2008 to 2013
$4.2M
CIHRNINDS NIH HHS P30 NS055022NINDS NIH HHS P30-NS055022PHS HHS HHSN-271-2008-00025-C
6 · The paper itself

Abstract

backgroundBoth T-type calcium channels and cannabinoid receptors modulate signalling in the primary afferent pain pathway. Here, we investigate the analgesics activities of a series of novel cannabinoid receptor ligands with T-type calcium channel blocking activity.

resultsNovel compounds were characterized in radioligand binding assays and in vitro functional assays at human and rat CB1 and CB2 receptors. The inhibitory effects of these compounds on transient expressed human T-type calcium channels were examined in tsA-201 cells using standard whole-cell voltage clamp techniques, and their analgesic effects in response to various administration routes (intrathecally, intraplantarly, intraperitoneally) assessed in the formalin model. A series of compounds were synthesized and evaluated for channel and receptor activity. Compound NMP-7 acted as non-selective CB1/CB2 agonist while NMP4 was found to be a CB1 partial agonist and CB2 inverse agonist. Furthermore, NMP-144 behaved as a selective CB2 inverse agonist. All of these three compounds completely inhibited peak Cav3.2 currents with IC50 values in the low micromolar range. All compounds mediated analgesic effects in the formalin model, but depending on the route of administration, could differentially affect phase 1 and phase 2 of the formalin response.

conclusionsOur results reveal that a set of novel cannabinioid receptor ligands potently inhibit T-type calcium channels and show analgesic effects in vivo. Our findings suggest possible novel means of mediating pain relief through mixed T-type/cannabinoid receptor ligands.

Indexed as

AnalgesicsAnimalsCalcium Channels, T-TypeCarbazolesCarbolinesCHO CellsCricetinaeCricetulusHEK293 CellsHumansLigandsRatsReceptor, Cannabinoid, CB1Receptor, Cannabinoid, CB2AnalgesicsCalcium Channels, T-TypeCarbazolesCarbolinesLigandsNMP144 compoundNMP4 compoundNMP7 compoundReceptor, Cannabinoid, CB1Receptor, Cannabinoid, CB2

Identifiers

PMID22093952
PMCPMC3250956
OpenAlexW2149378981

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.