Evidence map›Paper›PMID 19309356›Full record

ArticleBritish journal of pharmacology2009

Activation of iGluR5 kainate receptors inhibits neurogenic dural vasodilatation in an animal model of trigeminovascular activation.

A P Andreou, P R Holland, P J Goadsby

Open access · greenAbstract read
In one paragraph

Article in British journal of pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.8field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 43 citations in OpenAlex.

  1. Glutamate as a Therapeutic Substrate in Migraine.International journal of molecular sciences · 2025
    Review
  2. Review
  3. The 5-HTNature reviews. Neurology · 2023
    Review
  4. Kainate Receptor Antagonists: Recent Advances and Therapeutic Perspective.International journal of molecular sciences · 2023
    Review
  5. Article
  6. Peripheral role of glutamate in orofacial pain.Frontiers in neuroscience · 2022
    Review
  7. Review
  8. Mechanisms of migraine as a chronic evolutive condition.The journal of headache and pain · 2019
    Review
  9. Article
  10. The α6 subunit-containing GABANeuropharmacology · 2018
    Article
  11. Glutamate and Its Receptors as Therapeutic Targets for Migraine.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2018
    Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Kainate receptor signaling in pain pathways.Molecular pharmacology · 2013
    Review
  17. Pathophysiology of migraine.Annals of Indian Academy of Neurology · 2012
    Article
  18. Review
  19. Acute migraine therapy: new drugs and new approaches.Current treatment options in neurology · 2011
    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

3 authors at 2 institutions in 1 country.

A P AndreouHeadache Group, Department of Neurology, University of California, San Francisco, San Francisco, CA 94143-0114, USA.
P R Holland
P J Goadsby
University of California, San Francisco · USCalifornia Medical Clinic for Headache · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeMigraine is a disabling neurological disorder involving activation, or the perception of activation, of trigeminovascular afferents containing calcitonin gene-related peptide (CGRP). Released CGRP from peripheral trigeminal afferents causes dilatation of dural blood vessel, and this is used to measure trigeminal nerve activation. Kainate receptors with the GluR5 subunit (iGluR5, ionotropic glutamate receptor) are present in the trigeminal ganglion and may be involved in nociception. We investigated the possible involvement of prejunctional iGluR5 kainate receptors on CGRP release from trigeminal afferents. EXPERIMENTAL APPROACH: We used neurogenic dural vasodilatation, which involves reproducible vasodilatation in response to CGRP release after electrical stimulation of the dura mater surrounding the middle meningeal artery. The effects of the specific iGluR5 receptor antagonist UBP 302 and agonist (S)-(-)-5-iodowillardiine were investigated on neurogenic and CGRP-induced dural vasodilatation in rats, by using intravital microscopy. KEY

resultsAdministration of 10 and 20 mg.kg(-1) of iodowillardiine inhibited electrically induced dural vessel dilatation, an effect blocked by pretreatment with 50 mg.kg(-1) UBP 302. Administration of the iGluR5 receptor antagonist UBP 302 alone had no significant effect. CGRP (1 mg.kg(-1))-induced dural vasodilatation was not inhibited by the iGluR5 receptor agonist iodowillardiine. CONCLUSIONS AND IMPLICATIONS: This study demonstrates that activation of the iGluR5 kainate receptors with the selective agonist iodowillardiine is able to inhibit neurogenic dural vasodilatation probably by inhibition of prejunctional release of CGRP from trigeminal afferents. Taken together with recent clinical studies the data reinforce CGRP mechanisms in primary headaches and demonstrate a novel role for kainate receptor modulation of trigeminovascular activation.

Indexed as

Afferent PathwaysAlanineAnimalsCalcitonin Gene-Related PeptideDura MaterElectric StimulationKainic Acid ReceptorsMalePyrimidinesRatsRats, Sprague-DawleyThymineTrigeminal NerveVasodilation1-(2-amino-2-carboxyethyl)-3-(2-carboxybenzyl)pyrimidine-2,4-dione5-iodowillardiineAlanineCalcitonin Gene-Related PeptideKainic Acid ReceptorsPyrimidinesThymine

Identifiers

PMID19309356
PMCPMC2707992
OpenAlexW1483729167

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.