Evidence map›Paper›PMID 34800989›Full record

Trial reportThe journal of headache and pain2021

Tracking tDCS induced grey matter changes in episodic migraine: a randomized controlled trial.

Simon Schading, Heiko Pohl, Andreas Gantenbein, Roger Luechinger, Peter Sandor, Franz Riederer, Patrick Freund, Lars Michels

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The journal of headache and pain, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03237754 (Clinical and Neuronal Changes in Chronic and Episodic Migraine Patients After Neurostimulation), which is not on this map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 pooled it
1.1field-weighted citation impact, top 24% 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.

NCT03237754 naterminatednot on this map

Clinical and Neuronal Changes in Chronic and Episodic Migraine Patients After Neurostimulation

TypeinterventionalSponsorUniversity of ZurichRan2016 to 2020Enrolled41ConditionsDouble-blind Design, Sham-controlled, RandomizedArmstDCS device from neuroConn
3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. 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

8 authors at 4 institutions in 3 countries.

Simon SchadingSpinal Cord Injury Centre Balgrist, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Heiko PohlDepartment of Neurology, University Hospital Zurich, Zurich, Switzerland.
Andreas GantenbeinDepartment of Neurology, University Hospital Zurich, Zurich, Switzerland.
Roger LuechingerInstitute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland.
Peter SandorDepartment of Neurology, University Hospital Zurich, Zurich, Switzerland.
Franz RiedererDepartment of Neurology, University Hospital Zurich, Zurich, Switzerland.
Patrick Freund *Spinal Cord Injury Centre Balgrist, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Lars Michels *Department of Neuroradiology, University Hospital Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland. lars.michels@usz.ch.
University Hospital of Zurich · CHUniversity of Zurich · CHMax Planck Institute for Human Cognitive and Brain Sciences · DEStiftung für Forschung in Spätantike und Mittelalter HR. Sennhauser · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOccipital transcranial direct current stimulation (tDCS) is an effective and safe treatment for migraine attack prevention. Structural brain alterations have been found in migraineurs in regions related to pain modulation and perception, including occipital areas. However, whether these structural alterations can be dynamically modulated through tDCS treatment is understudied.

objectiveTo track longitudinally grey matter volume changes in occipital areas in episodic migraineurs during and up to five months after occipital tDCS treatment in a single-blind, and sham-controlled study.

methods24 episodic migraineurs were randomized to either receive verum or sham occipital tDCS treatment for 28 days. To investigate dynamic grey matter volume changes patients underwent structural MRI at baseline (prior to treatment), 1.5 months and 5.5 months (after completion of treatment). 31 healthy controls were scanned with the same MRI protocol. Morphometry measures assessed rate of changes over time and between groups by means of tensor-based morphometry.

resultsBefore treatment, migraineurs reported 5.6 monthly migraine days on average. A cross-sectional analysis revealed grey matter volume increases in the left lingual gyrus in migraineurs compared to controls. Four weeks of tDCS application led to a reduction of 1.9 migraine days/month and was paralleled by grey matter volume decreases in the left lingual gyrus in the treatment group; its extent overlapping with that seen at baseline.

conclusionThis study shows that migraineurs have increased grey matter volume in the lingual gyrus, which can be modified by tDCS. Tracking structural plasticity in migraineurs provides a potential neuroimaging biomarker for treatment monitoring.

trial registrationClinicalTrials.gov , NCT03237754 . Registered 03 August 2017 - retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT03237754 .

Indexed as

Migraine DisordersTranscranial Direct Current StimulationCross-Sectional StudiesGray MatterHumansSingle-Blind MethodBrain plasticityMigraineStructural alterationsStructural MRITranscranial direct current stimulationVoxel-based morphometry

Identifiers

PMID34800989
PMCPMC8605508
OpenAlexW3215221003

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.