Evidence map›Paper›PMID 27919019›Full record

ArticleCephalalgia : an international journal of headache2019

Induction of calcitonin gene-related peptide expression in rats by cortical spreading depression.

Yan Wang, Anne E Tye, Junli Zhao, Dongqing Ma, Ann C Raddant, Fan Bu, Benjamin L Spector, Nolan K Winslow, Minyan Wang, Andrew F Russo

Abstract read
In one paragraph

Article in Cephalalgia : an international journal of headache, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.8field-weighted citation impact, top 10% 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, 53 citations in OpenAlex.

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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

10 authors at 2 institutions in 3 countries.

Yan Wang1 Centre for Neuroscience and.
Anne E Tye3 Department of Biological Sciences, Xi'an Jiaotong-Liverpool University (XJTLU), SIP, Suzhou 215123, China.
Junli Zhao1 Centre for Neuroscience and.
Dongqing Ma1 Centre for Neuroscience and.
Ann C Raddant4 Molecular Physiology and Biophysics, and.
Fan Bu1 Centre for Neuroscience and.
Benjamin L Spector4 Molecular Physiology and Biophysics, and.
Nolan K Winslow4 Molecular Physiology and Biophysics, and.
Minyan Wang1 Centre for Neuroscience and.
Andrew F Russo3 Department of Biological Sciences, Xi'an Jiaotong-Liverpool University (XJTLU), SIP, Suzhou 215123, China.
Institute of Molecular Biology and Biophysics · RUXi’an Jiaotong-Liverpool University · CN

Funding

Perivascular mechanisms of CGRP-induced migraine symptomsR01NS075599 · NINDS · UNIVERSITY OF IOWA · PI RUSSO, ANDREW F · 2011 to 2023
$5.0M
SHORT-TERM TRAINING: STUDENTS IN HEALTH PROF. SCHOOLST35HL007485 · NHLBI · UNIVERSITY OF IOWA · PI ROGHAIR, ROBERT D · 1985 to 2019
$4.3M
Interdisciplinary Training Program in Pain ResearchT32NS045549 · NINDS · UNIVERSITY OF IOWA · PI KATHLEEN A SLUKA, Yuriy M Usachev · 2004 to 2026
$3.7M
Photosensitivity as a preclinical assessment for treatment of post-traumatic headacheI01RX002101 · VA · IOWA CITY VA MEDICAL CENTER · PI PIEPER, ANDREW A, RUSSO, ANDREW F · 2016 to 2020
–
NHLBI NIH HHS T35 HL007485NINDS NIH HHS R01 NS075599NINDS NIH HHS T32 NS045549RRD VA I01 RX002101
6 · The paper itself

Abstract

objectiveThe neuropeptide calcitonin gene-related peptide (CGRP) has now been established as a key player in migraine. However, the mechanisms underlying the reported elevation of CGRP in the serum and cerebrospinal fluid of some migraineurs are not known. A candidate mechanism is cortical spreading depression (CSD), which is associated with migraine with aura and traumatic brain injury. The aim of this study was to investigate whether CGRP gene expression may be induced by experimental CSD in the rat cerebral cortex.

methodsCSD was induced by topical application of KCl and monitored using electrophysiological methods. Quantitative PCR and ELISA were used to measure CGRP mRNA and peptide levels in discrete ipsilateral and contralateral cortical regions of the rat brain 24 hours following CSD events and compared with sham treatments.

resultsThe data show that multiple, but not single, CSD events significantly increase CGRP mRNA levels at 24 hours post-CSD in the ipsilateral rat cerebral cortex. Increased CGRP was observed in the ipsilateral frontal, motor, somatosensory, and visual cortices, but not the cingulate cortex, or contralateral cortices. CSD also induced CGRP peptide expression in the ipsilateral, but not contralateral, cortex.

conclusionsRepeated CSD provides a mechanism for prolonged elevation of CGRP in the cerebral cortex, which may contribute to migraine and post-traumatic headache.

Indexed as

AnimalsCalcitonin Gene-Related PeptideCerebral CortexCortical Spreading DepressionGene ExpressionMalePotassium ChlorideRatsRats, Sprague-DawleyRNA, MessengerCalcitonin Gene-Related PeptidePotassium ChlorideRNA, MessengerCGRPgene expressionmigrainepost-traumatic headachetraumatic brain injury

Identifiers

PMID27919019
PMCPMC5461204
OpenAlexW2556786246

What OpenQuestion holds

Textmetadata
LicenceTDM
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.