Evidence map›Paper›PMID 26933133›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2017

Integrity of normal-appearing white matter: Influence of age, visible lesion burden and hypertension in patients with small-vessel disease.

Susana Muñoz Maniega, Francesca M Chappell, Maria C Valdés Hernández, Paul A Armitage, Stephen D Makin, Anna K Heye, Michael J Thrippleton, Eleni Sakka, Kirsten Shuler, Martin S Dennis and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 115 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
115citing papers in PubMed, 7 pooled it
15.0field-weighted citation impact, top 1% 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

115 citing papers in PubMed, 7 syntheses or guidelines pooled it, 177 citations in OpenAlex.

  1. Pooled it
  2. Sporadic cerebral small vessel disease and cognitive decline in healthy older adults: A systematic review and meta-analysis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
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  5. Hypertension, seizures, and epilepsy: a review on pathophysiology and management.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
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55 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

11 authors at 2 institutions in 1 country.

Susana Muñoz Maniega1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Francesca M Chappell1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Maria C Valdés Hernández1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Paul A Armitage2 Department of Cardiovascular Science, University of Sheffield, Sheffield, UK.
Stephen D Makin1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Anna K Heye1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Michael J Thrippleton1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Eleni Sakka1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Kirsten Shuler1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Martin S Dennis1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
Joanna M Wardlaw1 Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK.
University of Edinburgh · GBUniversity of Sheffield · GB

Funding

Medical Research Council MR/K026992/1
6 · The paper itself

Abstract

White matter hyperintensities accumulate with age and occur in patients with stroke, but their pathogenesis is poorly understood. We measured multiple magnetic resonance imaging biomarkers of tissue integrity in normal-appearing white matter and white matter hyperintensities in patients with mild stroke, to improve understanding of white matter hyperintensities origins. We classified white matter into white matter hyperintensities and normal-appearing white matter and measured fractional anisotropy, mean diffusivity, water content (T1-relaxation time) and blood-brain barrier leakage (signal enhancement slope from dynamic contrast-enhanced magnetic resonance imaging). We studied the effects of age, white matter hyperintensities burden (Fazekas score) and vascular risk factors on each biomarker, in normal-appearing white matter and white matter hyperintensities, and performed receiver-operator characteristic curve analysis. Amongst 204 patients (34.3-90.9 years), all biomarkers differed between normal-appearing white matter and white matter hyperintensities ( P < 0.001). In normal-appearing white matter and white matter hyperintensities, mean diffusivity and T1 increased with age ( P < 0.001), all biomarkers varied with white matter hyperintensities burden ( P < 0.001; P = 0.02 signal enhancement slope), but only signal enhancement slope increased with hypertension ( P = 0.028). Fractional anisotropy showed complex age-white matter hyperintensities-tissue interactions; enhancement slope showed white matter hyperintensities-tissue interactions. Mean diffusivity distinguished white matter hyperintensities from normal-appearing white matter best at all ages. Blood-brain barrier leakage increases with hypertension and white matter hyperintensities burden at all ages in normal-appearing white matter and white matter hyperintensities, whereas water mobility and content increase as tissue damage accrues, suggesting that blood-brain barrier leakage mediates small vessel disease-related brain damage.

Indexed as

AdultAgedAged, 80 and overAgingAnisotropyBlood-Brain BarrierBrainDiffusion Tensor ImagingFemaleHumansHypertensionMagnetic Resonance ImagingMaleMiddle AgedProspective StudiesStrokeageingblood–brain barriercerebrovascular diseasediffusion tensor imagingMagnetic resonance imaging

Identifiers

PMID26933133
PMCPMC5381455
OpenAlexW2292956239

What OpenQuestion holds

Textmetadata
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.