Evidence map›Paper›PMID 20804493›Full record

ArticleBritish journal of pharmacology2010

Evidence for CGRP re-uptake in rat dura mater encephali.

Saurabh Gupta, Dipak Vasantrao Amrutkar, Aydin Mataji, Hassan Salmasi, Anders Hay-Schmidt, Majid Sheykhzade, Karl Messlinger, Jes Olesen, Inger Jansen-Olesen

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.8field-weighted citation impact, top 18% 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

18 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Article
  5. CGRP measurements in human plasma - a methodological study.Cephalalgia : an international journal of headache · 2021
    Article
  6. Article
  7. Effects of Calcitonin-Gene-Related-Peptide on Auditory Nerve Activity.Frontiers in cell and developmental biology · 2021
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Neurogenic inflammation and its role in migraine.Seminars in immunopathology · 2018
    Review
  13. Review
  14. Review
  15. Review
  16. Review
  17. Review
  18. 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

9 authors at 3 institutions in 2 countries.

Saurabh GuptaDepartment of Neurology, Glostrup Research Institute, Glostrup Hospital, Faculty of Health Science, University of Copenhagen, Glostrup, Copenhagen, Denmark.
Dipak Vasantrao Amrutkar
Aydin Mataji
Hassan Salmasi
Anders Hay-Schmidt
Majid Sheykhzade
Karl Messlinger
Jes Olesen
Inger Jansen-Olesen
Glostrup Hospital · DKUniversity of Copenhagen · DKFriedrich-Alexander-Universität Erlangen-Nürnberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeCalcitonin gene-related peptide (CGRP) is widely distributed in the trigeminovascular system and released from sensory fibres of the cranial dura mater upon noxious stimulation. Such release may be a mechanism underlying migraine headache. Based on data from guinea pig basilar artery preparations, we have here studied CGRP release and uptake in an organ preparation of the hemisected rat skull. EXPERIMENTAL APPROACH: CGRP release from the cranial dura was quantified by a commercial enzyme-linked immunoassay. CGRP was depleted using repetitive challenges of capsaicin. After incubating the tissue with CGRP for 20 min and extensive washing, another capsaicin challenge was performed. Immunohistochemistry was used to visualize CGRP immunofluorescence in dural nerve fibres. KEY

resultsCapsaicin-induced CGRP release was attenuated by the transient receptor potential vanilloid receptor type I antagonist capsazepine or by Ca(2+)-free solutions. After the CGRP-depleted preparation had been exposed to exogenous CGRP, capsaicin-induced CGRP release was increased compared to the challenge just prior to incubation. CGRP uptake was not influenced by Ca(2+)-free solutions. Olcegepant and CGRP(8-37) (CGRP receptor antagonists) did not affect uptake of CGRP. However, a monoclonal CGRP-binding antibody decreased CGRP uptake significantly. Release of CGRP after incubation was attenuated by Ca(2+)-free solutions and by capsazepine. Immunohistochemical assays indicated a weak trend towards CGRP uptake in rat dura mater. CONCLUSION AND IMPLICATIONS: We have presented evidence for CGRP uptake in nerves and its re-release in rat dura mater. This may have implications for the pathophysiology and treatment of migraine.

Indexed as

AnimalsAntibodies, MonoclonalCalcitonin Gene-Related PeptideCalcitonin Gene-Related Peptide Receptor AntagonistsCalciumCapsaicinDipeptidesDura MaterMalePeptide FragmentsPiperazinesQuinazolinesRatsRats, Sprague-DawleySensory Receptor CellsAntibodies, MonoclonalCalcitonin Gene-Related Peptidecalcitonin gene-related peptide (8-37)Calcitonin Gene-Related Peptide Receptor AntagonistsCalciumCapsaicincapsazepineDipeptidesolcegepantPeptide FragmentsPiperazinesQuinazolines

Identifiers

PMID20804493
PMCPMC3010590
OpenAlexW1726560385

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.