Evidence map›Paper›PMID 19089403›Full record

ArticleDiabetologia2009

Cannabinoid type 1 receptors in human skeletal muscle cells participate in the negative crosstalk between fat and muscle.

K Eckardt, H Sell, A Taube, M Koenen, B Platzbecker, A Cramer, A Horrighs, M Lehtonen, N Tennagels, J Eckel

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Diabetologia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
10.7field-weighted citation impact, top 1% 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

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 150 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Intramuscular adipose tissue: from progenitor to pathology.American journal of physiology. Cell physiology · 2025
    Review
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  7. Article
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  9. Article
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  12. Hepatic targeting of the centrally active cannabinoid 1 receptor (CBJournal of controlled release : official journal of the Controlled Release Society · 2023
    Article
  13. Article
  14. Cannabis and cannabinoid research · 2022
    Article
  15. Article
  16. Article
  17. The Peripheral Cannabinoid Receptor Type 1 (CBMolecules (Basel, Switzerland) · 2021
    Review
  18. Review
  19. Review
  20. Review

10 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

K EckardtInstitute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Center, Auf'm Hennekamp 65, 40225, Duesseldorf, Germany.
H Sell
A Taube
M Koenen
B Platzbecker
A Cramer
A Horrighs
M Lehtonen
N Tennagels
J Eckel
Deutsches Diabetes-Zentrum e.V. · DESanofi (Germany) · DEUniversity of Eastern Finland · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aims/hypothesisCannabinoid type 1 receptor (CB1R) antagonists such as rimonabant (Rim) represent a novel approach to treat obesity and related metabolic disorders. Recent data suggest that endocannabinoids are also produced by human adipocytes. Here we studied the potential involvement of endocannabinoids in the negative crosstalk between fat and muscle.

methodsThe protein level of CB1R in human skeletal muscle cells (SkM) during differentiation was analysed using western blotting. SkM were treated with adipocyte-conditioned medium (CM) or anandamide (AEA) in combination with the CB1R antagonists Rim or AM251, and insulin-stimulated Akt phosphorylation and glucose uptake were determined. Furthermore, signalling pathways of CB1R were investigated.

resultsWe revealed an increase of CB1R protein in SkM during differentiation. Twenty-four hour incubation of SkM with CM or AEA impaired insulin-stimulated Akt(Ser473) phosphorylation by 60% and up to 40%, respectively. Pretreatment of cells with Rim or AM251 reduced the effect of CM by about one-half, while the effect of AEA could be prevented completely. The reduction of insulin-stimulated glucose uptake by CM was completely prevented by Rim. Short-time incubation with AEA activated extracellular regulated kinase 1/2 and p38 mitogen-activated protein kinase, and impaired insulin-stimulated Akt(Ser473) phosphorylation, but had no effect on Akt(Thr308) and glycogen synthase kinase 3alpha/beta phosphorylation. In addition, enhanced IRS-1 (Ser307) phosphorylation was observed. CONCLUSIONS/

interpretationOur results show that the CB1R system may play a role in the development of insulin resistance in human SkM. The results obtained with CM support the notion that adipocytes may secrete factors which are able to activate the CB1R. Furthermore, we identified two stress kinases in the signalling pathway of AEA and enhanced IRS-1(Ser307) phosphorylation, potentially underlying the development of insulin resistance.

Indexed as

AdipocytesAdipose TissueArachidonic AcidsCannabinoid Receptor ModulatorsCell Culture TechniquesCell DifferentiationEndocannabinoidsHumansInsulin ResistanceMuscle, SkeletalPiperidinesPolyunsaturated AlkamidesPyrazolesReceptor, Cannabinoid, CB1Receptor Cross-TalkRimonabantanandamideArachidonic AcidsCannabinoid Receptor ModulatorsEndocannabinoidsPiperidinesPolyunsaturated AlkamidesPyrazolesReceptor, Cannabinoid, CB1Rimonabant

Identifiers

PMID19089403
OpenAlexW2088898574

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.