Evidence map›Paper›PMID 18221935›Full record

ArticleBrain research2008

Calcitonin gene-related peptide stimulation of nitric oxide synthesis and release from trigeminal ganglion glial cells.

Jing Li, Carrie V Vause, Paul L Durham

Open access · greenAbstract read
In one paragraph

Article in Brain research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 1 pooled it
7.8field-weighted citation impact, top 2% 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

80 citing papers in PubMed, 1 synthesis or guideline pooled it, 177 citations in OpenAlex.

  1. Pooled it
  2. International journal of molecular sciences · 2026
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  15. Molecules (Basel, Switzerland) · 2023
    Article
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  18. Article
  19. Peripheral role of glutamate in orofacial pain.Frontiers in neuroscience · 2022
    Review
  20. Review

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

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.

Jing LiDepartment of Biology, Missouri State University, Springfield, Missouri 65897, USA.
Carrie V Vause
Paul L Durham
Missouri State University · US

Funding

CGRP Regulation of iNOS and MAP Kinases/Phosphatases in Trigeminal Ganglia GliaR01DE017805 · NIDCR · MISSOURI STATE UNIVERSITY · PI DURHAM, PAUL L · 2006 to 2010
$1.2M
NIDCR NIH HHS DE017805NIDCR NIH HHS R01 DE017805
6 · The paper itself

Abstract

Clinical and basic science data support an integral role of calcitonin gene-related peptide (CGRP) in migraine pathology. Following trigeminal nerve activation, afferent release of CGRP causes vasodilation while efferent release leads to pain. Although CGRP can also be secreted from cell bodies of trigeminal neurons located within the ganglion, the function of CGRP released in the ganglion is poorly understood. Initially, we showed that SNAP-25, a protein required for CGRP release, was localized in cell bodies of trigeminal ganglia neurons. We also found that satellite glial cells in the ganglia express the CGRP1 receptor protein RAMP1. To determine whether CGRP could directly activate glial cells, primary cultures of rat trigeminal ganglia were utilized to study the effects of CGRP on glial nitric oxide (NO) synthesis and release. Under our culture conditions, >95% of the cells expressed glial fibrillary acidic protein and RAMP1. While weak iNOS staining was observed in glia under basal conditions, CGRP treatment greatly increased glial iNOS expression and NO release. This stimulatory effect was blocked by the CGRP1 receptor antagonist, CGRP(8-37) peptide. Treatment of glial cultures with forskolin or cAMP also increased iNOS expression and stimulated NO release to levels similar to CGRP. To our knowledge, this is the first evidence that activation of CGRP1 receptors regulates glial iNOS and NO release. We propose that following trigeminal nerve activation, CGRP secretion from neuronal cell bodies activates satellite glial cells that release NO and initiate inflammatory events in the ganglia that contribute to peripheral sensitization in migraine.

Indexed as

AnimalsCalcitonin Gene-Related PeptideColforsinCyclic AMPDose-Response Relationship, DrugFemaleGlial Fibrillary Acidic ProteinIndolesIntracellular Signaling Peptides and ProteinsMaleMembrane ProteinsNeurogliaNitric OxideNitric Oxide Synthase Type IIRatsRats, Sprague-DawleyCalcitonin Gene-Related PeptideColforsinCyclic AMPDAPIGlial Fibrillary Acidic ProteinIndolesIntracellular Signaling Peptides and ProteinsMembrane ProteinsNitric OxideNitric Oxide Synthase Type IIRamp1 protein, ratReceptor Activity-Modifying Protein 1Receptor Activity-Modifying ProteinsSnap25 protein, ratSynaptosomal-Associated Protein 25

Identifiers

PMID18221935
PMCPMC2268710
OpenAlexW2010043377

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.