Evidence map›Paper›PMID 32535680›Full record

SynthesisJournal of neurology2020

Enlarged perivascular spaces in multiple sclerosis on magnetic resonance imaging: a systematic review and meta-analysis.

Tobias Granberg, Thomas Moridi, Judith S Brand, Susanne Neumann, Martin Hlavica, Fredrik Piehl, Benjamin V Ineichen

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 3 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

49 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Meta-analysis of the relationship between the number and location of perivascular spaces in the brain and cognitive function.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
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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

7 authors.

Tobias GranbergDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Thomas MoridiDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Judith S BrandClinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, 70185, Örebro, Sweden.
Susanne NeumannDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Martin HlavicaDepartment of Neurosurgery, Inselspital, University of Bern, Bern, Switzerland.
Fredrik PiehlDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Benjamin V IneichenDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. ineichen@protonmail.ch.ORCID http://orcid.org/0000-0003-1362-4819

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPerivascular spaces can become detectable on magnetic resonance imaging (MRI) upon enlargement, referred to as enlarged perivascular spaces (EPVS) or Virchow-Robin spaces. EPVS have been linked to small vessel disease. Some studies have also indicated an association of EPVS to neuroinflammation and/or neurodegeneration. However, there is conflicting evidence with regards to their potential as a clinically relevant imaging biomarker in multiple sclerosis (MS).

methodsTo perform a systematic review and meta-analysis of EPVS as visualized by MRI in MS. Nine out of 299 original studies addressing EPVS in humans using MRI were eligible for the systematic review and meta-analysis including a total of 457 MS patients and 352 control subjects.

resultsIn MS, EPVS have been associated with cognitive decline, contrast-enhancing MRI lesions, and brain atrophy. Yet, these associations were not consistent between studies. The meta-analysis revealed that MS patients have greater EPVS prevalence (odds ratio = 4.61, 95% CI = [1.84; 11.60], p = 0.001) as well as higher EPVS counts (standardized mean difference [SMD] = 0.46, 95% CI = [0.26; 0.67], p < 0.001) and larger volumes (SMD = 0.88, 95% CI = [0.19; 1.56], p = 0.01) compared to controls.

conclusionsAvailable literature suggests a higher EPVS burden in MS patients compared to controls. The association of EPVS to neuroinflammatory or -degenerative pathology in MS remains inconsistent. Thus, there is currently insufficient evidence supporting EPVS as diagnostic and/or prognostic marker in MS. In order to benefit future comparisons of studies, we propose recommendations on EPVS assessment standardization in MS. PROSPERO No: CRD42019133946.

Indexed as

Cognitive DysfunctionGlymphatic SystemMultiple SclerosisHumansMagnetic Resonance ImagingMagnetic Resonance SpectroscopyBiomarkerEnlarged perivascular spacesMagnetic resonance imagingMeta-analysisMultiple sclerosisSystematic review

Identifiers

PMID32535680
PMCPMC7577911

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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.