Evidence map›Paper›PMID 29988531›Full record

ArticleFrontiers in neurology2018

Cortical and Subcortical Alterations in Medication Overuse Headache.

Jan Mehnert, Julia Hebestreit, Arne May

Abstract read
In one paragraph

Article in Frontiers in neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Observational
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Cortical pain processing in migraine.Journal of neural transmission (Vienna, Austria : 1996) · 2020
    Review
  11. Withdrawal from acute medication normalises short-term cortical synaptic potentiation in medication overuse headache.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
    Article
  12. 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

3 authors.

Jan MehnertDepartment of Systems Neuroscience, University Medical Center Eppendorf, Hamburg, Germany.
Julia HebestreitDepartment of Systems Neuroscience, University Medical Center Eppendorf, Hamburg, Germany.
Arne MayDepartment of Systems Neuroscience, University Medical Center Eppendorf, Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Medication-overuse headache is an increasing problem in headache clinics and therapy includes drug withdrawal. Although it has been shown that the orbitofrontal cortex is hypo-metabolic and exhibits less gray matter in these patients the functional role of this finding is still unclear as virtually no functional imaging studies exploring withdrawal of medication have been published. We compared structural and functional magnetic resonance images of 18 patients before and after drug withdrawal with age and gender matched controls using a well-established trigeminal, nociceptive fMRI paradigm. We reproduced structural changes in the orbitofrontal cortex of the patients which highly correlated with the clinical outcome of medication withdrawal. The neuronal activity before drug withdrawal in pain related regions (operculum, insula, spinal trigeminal nucleus) was reduced compared to after drug withdrawal and the orbitofrontal cortex showed a reduced functional connectivity to the nociceptive input region (spinal trigeminal nucleus) and the cerebellum which regained after withdrawal. These data suggest the seminal role of the orbitofrontal cortex as a mediator between bottom-up and top-down stream in headache processing.

Indexed as

analgesic-overuse headachefunctional connectivitygray matter volumenociceptionorbitofrontal cortexventromedial prefrontal cortex

Identifiers

PMID29988531
PMCPMC6026656

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Registered trials

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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.