Evidence map›Paper›PMID 34148405›Full record

ArticleCephalalgia : an international journal of headache2021

CGRP release in an experimental human trigeminal pain model.

Achim Frese, Oliver Summ, Stefan Evers

Open access · hybridAbstract read
In one paragraph

Article in Cephalalgia : an international journal of headache, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 44% 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

2 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. Excellent Response to OnabotulinumtoxinA: Different Definitions, Different Predictors.International journal of environmental research and public health · 2022
    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 3 institutions in 1 country.

Achim FreseFaculty of Medicine, University of Münster, Germany.
Oliver SummDepartment of Neurology and Research Center of Neurosensory Science, Carl von Ossietzky University Oldenburg, Oldenburg, Germany.
Stefan EversFaculty of Medicine, University of Münster, Germany.
Carl von Ossietzky Universität Oldenburg · DEKrankenhaus Lindenbrunn · DEMedizinische Akademie Erfurt · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMigraine and trigemino-autonomic cephalalgia attacks are associated with an increase of α-calcitonin-gene related peptide levels in the ipsilateral jugular vein. It is however unknown whether trigeminal pain stimulation in healthy subjects without headache disorders also induces increase of calcitonin-gene related peptide levels.

findingsWe measured α-calcitonin-gene related peptide levels in eight healthy subjects after subcutaneous injection of capsaicin in the forehead and in the mandibular region and after injection of sodium chloride in the forehead. We observed a significant increase of α-calcitonin-gene related peptide level only after injection of capsaicin in the forehead (i.e. first trigeminal branch). We also observed trigemino-autonomic activation (lacrimation, rhinorrhea etc.) only after injection of capsaicin in the forehead.

conclusionIncrease of α-calcitonin-gene related peptide levels do not only occur in primary headache attacks but also after experimental trigeminal pain of the first branch. This finding suggests that α-calcitonin-gene related peptide elevation is, at least an additional, unspecific effect of first trigeminal branch stimulation following pain activation and not a specific mechanism of idiopathic headache disorders.

Indexed as

Headache DisordersMigraine DisordersCalcitonin Gene-Related PeptideCapsaicinHumansPainTrigeminal GanglionCalcitonin Gene-Related PeptideCapsaicincapsaicinCGRPheadachetrigemino-autonomic symptoms

Identifiers

PMID34148405
PMCPMC8504405
OpenAlexW3175643186

What OpenQuestion holds

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Registered trials

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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.