Evidence map›Paper›PMID 32471359›Full record

ArticleThe journal of headache and pain2020

Microstructural changes in the trigeminal nerve of patients with episodic migraine assessed using magnetic resonance imaging.

Tiffani J Mungoven, Noemi Meylakh, Kasia K Marciszewski, Vaughan G Macefield, Paul M Macey, Luke A Henderson

Open access · goldAbstract read
In one paragraph

Article in The journal of headache and pain, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Observational
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  11. Innate immune suppression by SARS-CoV-2 mRNA vaccinations: The role of G-quadruplexes, exosomes, and MicroRNAs.Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Chronic Migraine Pathophysiology and Treatment: A Review of Current Perspectives.Frontiers in pain research (Lausanne, Switzerland) · 2021
    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

6 authors at 3 institutions in 2 countries.

Tiffani J MungovenDepartment of Anatomy and Histology, F13, University of Sydney, Sydney, NSW, 2006, Australia.
Noemi MeylakhDepartment of Anatomy and Histology, F13, University of Sydney, Sydney, NSW, 2006, Australia.
Kasia K MarciszewskiDepartment of Anatomy and Histology, F13, University of Sydney, Sydney, NSW, 2006, Australia.
Vaughan G MacefieldBaker Heart & Diabetes Institute, Melbourne, Australia.
Paul M MaceyUCLA School of Nursing and Brain Research Institute, University of California, Los Angeles, California, 90095, USA.
Luke A HendersonDepartment of Anatomy and Histology, F13, University of Sydney, Sydney, NSW, 2006, Australia. lukeh@anatomy.usyd.edu.au.ORCID http://orcid.org/0000-0002-1026-0151
The University of Sydney · AUBaker Heart and Diabetes Institute · AUUniversity of California, Los Angeles · US

Funding

National Health and Medical Research Council of Australia GNT1143547
6 · The paper itself

Abstract

backgroundThere is histological evidence of microstructural changes in the zygomaticotemporal branch of the trigeminal nerve in migraineurs. This raises the possibility that altered trigeminal nerve properties contribute to migraine pathophysiology. Whilst it is not possible to explore the anatomy of small trigeminal nerve branches it is possible to explore the anatomy of the trigeminal root entry zone using magnetic resonance imaging in humans. The aim of this investigation is to assess the microstructure of the trigeminal nerve in vivo to determine if nerve alterations occur in individuals with episodic migraine.

methodsIn 39 migraineurs and 39 matched controls, T1-weighted anatomical images were used to calculate the volume (mm

resultsThere were significant differences between the left and right nerve of controls and migraineurs with respect to volume and not cross-sectional area. Migraineurs displayed reduced axial diffusion in the right nerve compared to the left nerve, and reduced fractional anisotropy in the left nerve compared to left controls. Furthermore, although there were no differences in mean diffusion or radial diffusion, regional analysis of the nerve revealed significantly greater radial diffusion in the middle and rostral portion of the left trigeminal nerve in migraineurs compared with controls.

conclusionsMigraine pathophysiology is associated with microstructural abnormalities within the trigeminal nerve that are consistent with histological evidence of altered myelin and/or organization. These peripheral nerve changes may provide further insight into migraine pathophysiology and enable a greater understanding for targeted treatments of pain alleviation.

Indexed as

AdultAnisotropyCross-Sectional StudiesFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedMigraine DisordersPainTrigeminal NerveDiffusion tensor imagingFractional anisotropyMean diffusivityNerve volumeTrigeminal root entry zone

Identifiers

PMID32471359
PMCPMC7260805
OpenAlexW3030749617

What OpenQuestion holds

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LicenceCC BY
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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.