Evidence map›Paper›PMID 36510143›Full record

ArticleThe journal of headache and pain2022

CGRP-dependent sensitization of PKC-δ positive neurons in central amygdala mediates chronic migraine.

Tse-Ming Chou, Zhung-Fu Lee, Shuu-Jiun Wang, Cheng-Chang Lien, Shih-Pin Chen

Open access · goldAbstract read
In one paragraph

Article in The journal of headache and pain, 2022. 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
3.0field-weighted citation impact, top 8% 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, 26 citations in OpenAlex.

  1. Article
  2. Central amygdalar PKCδ neurons mediate fentanyl withdrawal.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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  6. The pPVTThe journal of headache and pain · 2026
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  14. Sex Differences in Central Amygdala Glutamate Responses to Calcitonin Gene-Related Peptide.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

5 authors at 3 institutions in 2 countries.

Tse-Ming ChouInstitute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.
Zhung-Fu LeeBrain Research Center, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.
Shuu-Jiun WangInstitute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.
Cheng-Chang Lien *Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan. cclien@nycu.edu.tw.
Shih-Pin Chen *Interdisciplinary Neuroscience Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 115, Taiwan. chensp1977@gmail.com.
Academia Sinica · TWBaylor College of Medicine · USNational Yang Ming Chiao Tung University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate specific brain regions and neural circuits that are responsible for migraine chronification.

methodsWe established a mouse model of chronic migraine with intermittent injections of clinically-relevant dose of nitroglycerin (0.1 mg/kg for 9 days) and validated the model with cephalic and extracephalic mechanical sensitivity, calcitonin gene-related peptide (CGRP) expression in trigeminal ganglion, and responsiveness to sumatriptan or central CGRP blockade. We explored the neurons that were sensitized along with migraine chronification and investigated their roles on migraine phenotypes with chemogenetics.

resultsAfter repetitive nitroglycerin injections, mice displayed sustained supraorbital and hind paw mechanical hyperalgesia, which lasted beyond discontinuation of nitroglycerin infusion and could be transiently reversed by sumatriptan. The CGRP expression in trigeminal ganglion was also upregulated. We found the pERK positive cells were significantly increased in the central nucleus of the amygdala (CeA), and these sensitized cells in the CeA were predominantly protein kinase C-delta (PKC-δ) positive neurons co-expressing CGRP receptors. Remarkably, blockade of the parabrachial nucleus (PBN)-CeA CGRP neurotransmission by CGRP

conclusionsOur data suggest that CeA PKC-δ positive neurons innervated by PBN CGRP positive neurons might contribute to the chronification of migraine, which may serve as future therapeutic targets for chronic migraine.

Indexed as

Central Amygdaloid NucleusMigraine DisordersAnimalsCalcitonin Gene-Related PeptideHyperalgesiaMiceNitroglycerinProtein Kinase C-deltaReceptors, Calcitonin Gene-Related PeptideCalcitonin Gene-Related PeptideNitroglycerinProtein Kinase C-deltaReceptors, Calcitonin Gene-Related PeptideCentral amygdalaCGRPChronic migraineParabrachial nucleusPKC-δ

Identifiers

PMID36510143
PMCPMC9746101
OpenAlexW4311590053

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.