Evidence map›Paper›PMID 29394508›Full record

ArticleAnnals of neurology2018

Activation of pial and dural macrophages and dendritic cells by cortical spreading depression.

Aaron J Schain, Agustin Melo-Carrillo, David Borsook, Jaime Grutzendler, Andrew M Strassman, Rami Burstein

Open access · greenAbstract read
In one paragraph

Article in Annals of neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 3% 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

62 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Imaging the inflammatory phenotype in migraine.The journal of headache and pain · 2022
    Pooled it
  2. Article
  3. Article
  4. Non-neuronal targets for migraine therapy.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  5. Review
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  8. Article
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  13. Article
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  18. Article
  19. Meningeal Lymphatic and Glymphatic Structures in a Pelagic Delphinid (Animals : an open access journal from MDPI · 2025
    Article
  20. Review

2 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

6 authors at 3 institutions in 1 country.

Aaron J SchainDepartment of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
Agustin Melo-CarrilloDepartment of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
David BorsookHarvard Medical School, Boston, MA.
Jaime GrutzendlerDepartment of Neurology, Department of Neuroscience, Yale School of Medicine, New Haven, CT.
Andrew M StrassmanDepartment of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
Rami BursteinDepartment of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
Beth Israel Deaconess Medical Center · USHarvard University · USYale University · US

Funding

Photophobia during migraine: sensory, autonomic and emotional responses to lightR37NS079678 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI BURSTEIN, RAMI · 2012 to 2018
$3.1M
Cortical Mechanisms of Headache: Beyond CSDR01NS094198 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI BURSTEIN, RAMI · 2016 to 2020
$1.9M
Migraine pathophysiology: neural basis of photophobiaR01NS069847 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI BURSTEIN, RAMI · 2010 to 2014
$1.9M
Postnatal Development of the Neuro-Glio-Vascular UnitR01NS089734 · NINDS · YALE UNIVERSITY · PI GRUTZENDLER, JAIME · 2014 to 2018
$1.8M
Imaging Pain and Analgesia: Mentoring in Basic and Applied ResearchK24NS064050 · NINDS · MCLEAN HOSPITAL · PI BORSOOK, DAVID · 2008 to 2017
$1.7M
NINDS NIH HHS K24 NS064050NINDS NIH HHS R01 NS069847NINDS NIH HHS R01 NS089734NINDS NIH HHS R01 NS094198NINDS NIH HHS R37 NS079678
6 · The paper itself

Abstract

objectiveCortical spreading depression (CSD) has long been implicated in migraine attacks with aura. The process by which CSD, a cortical event that occurs within the blood-brain barrier (BBB), results in nociceptor activation outside the BBB is likely mediated by multiple molecules and cells. The objective of this study was to determine whether CSD activates immune cells inside the BBB (pia), outside the BBB (dura), or in both, and if so, when.

methodsInvestigating cellular events in the meninges shortly after CSD, we used in vivo two-photon imaging to identify changes in macrophages and dendritic cells (DCs) that reside in the pia, arachnoid, and dura and their anatomical relationship to TRPV1 axons.

resultsWe found that activated meningeal macrophages retract their processes and become circular, and that activated meningeal DCs stop migrating. We found that CSD activates pial macrophages instantaneously, pial, subarachnoid, and dural DCs 6-12 minutes later, and dural macrophages 20 minutes later. Dural macrophages and DCs can appear in close proximity to TRPV1-positive axons.

interpretationThe findings suggest that activation of pial macrophages may be more relevant to cases where aura and migraine begin simultaneously, that activation of dural macrophages may be more relevant to cases where headache begins 20 to 30 minutes after aura, and that activation of dural macrophages may be mediated by activation of migratory DCs in the subarachnoid space and dura. The anatomical relationship between TRPV1-positive meningeal nociceptors, and dural macrophages and DCs supports a role for these immune cells in the modulation of head pain. Ann Neurol 2018;83:508-521.

Indexed as

AnimalsCortical Spreading DepressionDendritic CellsDura MaterFemaleMacrophagesMaleMiceMice, Inbred C57BLMice, TransgenicPia MaterTRPV Cation ChannelsTRPV1 protein, mouseTRPV Cation Channels

Identifiers

PMID29394508
PMCPMC5965700
OpenAlexW2792154608

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.