Evidence map›Paper›PMID 25176008›Full record

ArticleBritish journal of pharmacology2015

The non-peptide GLP-1 receptor agonist WB4-24 blocks inflammatory nociception by stimulating β-endorphin release from spinal microglia.

Hui Fan, Nian Gong, Teng-Fei Li, Ai-Niu Ma, Xiao-Yan Wu, Ming-Wei Wang, Yong-Xiang Wang

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
3.0field-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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. Review
  6. Review
  7. Advances in GLP-1 receptor agonists for pain treatment and their future potential.The journal of headache and pain · 2025 · on this map
    Review
  8. Article
  9. Article
  10. Structural basis of peptidomimetic agonism revealed by small- molecule GLP-1R agonists Boc5 and WB4-24.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  11. Review
  12. Review
  13. Article
  14. Molecular insights into differentiated ligand recognition of the human parathyroid hormone receptor 2.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  15. Review
  16. Review
  17. Activation of GLP-1 receptors attenuates oxycodone taking and seeking without compromising the antinociceptive effects of oxycodone in rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    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.

Hui FanKing's Lab, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China.
Nian Gong
Teng-Fei Li
Ai-Niu Ma
Xiao-Yan Wu
Ming-Wei Wang
Yong-Xiang Wang
Shanghai Jiao Tong University · CNNational Center for Drug Screening · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeTwo peptide agonists of the glucagon-like peptide-1 (GLP-1) receptor, exenatide and GLP-1 itself, exert anti-hypersensitive effects in neuropathic, cancer and diabetic pain. In this study, we have assessed the anti-allodynic and anti-hyperalgesic effects of the non-peptide agonist WB4-24 in inflammatory nociception and the possible involvement of microglial β-endorphin and pro-inflammatory cytokines. EXPERIMENTAL APPROACH: We used rat models of inflammatory nociception induced by formalin, carrageenan or complete Freund's adjuvant (CFA), to test mechanical allodynia and thermal hyperalgesia. Expression of β-endorphin and pro-inflammatory cytokines was measured using real-time quantitative PCR and fluorescent immunoassays. KEY

resultsWB4-24 displaced the specific binding of exendin (9-39) in microglia. Single intrathecal injection of WB4-24 (0.3, 1, 3, 10, 30 and 100 μg) exerted dose-dependent, specific, anti-hypersensitive effects in acute and chronic inflammatory nociception induced by formalin, carrageenan and CFA, with a maximal inhibition of 60-80%. Spinal WB4-24 was not effective in altering nociceptive pain. Subcutaneous injection of WB4-24 was also antinociceptive in CFA-treated rats. WB4-24 evoked β-endorphin release but did not inhibit expression of pro-inflammatory cytokines in either the spinal cord of CFA-treated rats or cultured microglia stimulated by LPS. WB4-24 anti-allodynia was prevented by a microglial inhibitor, β-endorphin antiserum and a μ-opioid receptor antagonist. CONCLUSIONS AND IMPLICATIONS: Our results suggest that WB4-24 inhibits inflammatory nociception by releasing analgesic β-endorphin rather than inhibiting the expression of proalgesic pro-inflammatory cytokines in spinal microglia, and that the spinal GLP-1 receptor is a potential target molecule for the treatment of pain hypersensitivity including inflammatory nociception.

Indexed as

AnalgesicsAnimalsAnti-Inflammatory Agentsbeta-EndorphinCarrageenanCells, CulturedCyclobutanesFormaldehydeFreund's AdjuvantGlucagon-Like Peptide-1 ReceptorHEK293 CellsHot TemperatureHumansHydrogen PeroxideHyperalgesiaMaleAnalgesicsAnti-Inflammatory Agentsbeta-EndorphinCarrageenanCyclobutanesFormaldehydeFreund's AdjuvantGLP1R protein, humanGlp1r protein, ratGlucagon-Like Peptide-1 ReceptorHydrogen PeroxideOxidantsReceptors, GlucagonWB4-24

Identifiers

PMID25176008
PMCPMC4280968
OpenAlexW1496412423

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.