Evidence map›Paper›PMID 17982474›Full record

ArticleBritish journal of pharmacology2008

In vivo effects of CB2 receptor-selective cannabinoids on the vasculature of normal and arthritic rat knee joints.

J J McDougall, V Yu, J Thomson

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Impact of ΔBiomedicines · 2022
    Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. The CBCellular and molecular life sciences : CMLS · 2016
    Review
  12. Article
  13. Article
  14. Article
  15. Dynamic changes to the endocannabinoid system in models of chronic pain.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2012
    Review
  16. Neurophysiology of arthritis pain.Current pain and headache reports · 2012
    Review
  17. Tissue Engineering of Cartilage; Can Cannabinoids Help?Pharmaceuticals (Basel, Switzerland) · 2010
    Review
  18. 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 1 institution in 1 country.

J J McDougallDepartment of Physiology & Biophysics, University of Calgary, Calgary, Alberta, Canada. mcdougaj@ucalgary.ca
V Yu
J Thomson
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeCannabinoids (CBs) are known to be vasoactive and to regulate tissue inflammation. The present study examined the in vivo vasomotor effects of the CB2 receptor agonists JWH015 and JWH133 in rat knee joints. The effect of acute and chronic joint inflammation on CB2 receptor-mediated responses was also tested. EXPERIMENTAL APPROACH: Blood flow was assessed in rat knee joints by laser Doppler imaging both before and following topical administration of CB2 receptor agonists. Vasoactivity was measured in normal, acute kaolin/carrageenan inflamed and Freund's complete adjuvant chronically inflamed knees. KEY

resultsIn normal animals, JWH015 and JWH133 caused a concentration-dependent increase in synovial blood flow which in the case of JWH133 was blocked by the selective CB2 receptor antagonist AM630 as well as the transient receptor potential vanilloid-1 (TRPV1) antagonist SB366791. The vasodilator effect of JWH133 was significantly attenuated in both acute and chronically inflamed knees. Given alone, AM630 had no effect on joint blood flow. CONCLUSION AND IMPLICATIONS: In normal joints, the cannabinomimetic JWH133 causes hyperaemia via a CB2 and TRPV1 receptor mechanism. During acute and chronic inflammation, however, this vasodilatatory response is significantly attenuated.

Indexed as

Administration, TopicalAnimalsArthritis, ExperimentalBlood PressureCannabinoidsDose-Response Relationship, DrugEdemaImage Processing, Computer-AssistedJointsMaleRatsRats, WistarReceptor, Cannabinoid, CB2Regional Blood FlowTRPV Cation ChannelsVasodilator AgentsCannabinoidsReceptor, Cannabinoid, CB2Trpv1 protein, ratTRPV Cation ChannelsVasodilator Agents

Identifiers

PMID17982474
PMCPMC2219539
OpenAlexW2047789754

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.