Evidence map›Paper›PMID 27687026›Full record

SynthesisLupus2017

Fatigue and cognitive function in systemic lupus erythematosus: associations with white matter microstructural damage. A diffusion tensor MRI study and meta-analysis.

S J Wiseman, M E Bastin, I F Hamilton, D Hunt, S J Ritchie, E N Amft, S Thomson, J F F Belch, S H Ralston, J M Wardlaw

Abstract readMeta-Analysis
In one paragraph

Synthesis in Lupus, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

10 authors.

S J Wiseman1 Centre for Clinical Brain Sciences, University of Edinburgh, UK.
M E Bastin1 Centre for Clinical Brain Sciences, University of Edinburgh, UK.
I F Hamilton1 Centre for Clinical Brain Sciences, University of Edinburgh, UK.
D Hunt1 Centre for Clinical Brain Sciences, University of Edinburgh, UK.
S J Ritchie2 Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK.
E N Amft4 Department of Rheumatology, Western General Hospital, Edinburgh, UK.
S Thomson5 Division of Cardiovascular and Diabetes Medicine, University of Dundee, UK.
J F F Belch5 Division of Cardiovascular and Diabetes Medicine, University of Dundee, UK.
S H Ralston6 Centre for Genomic and Experimental Medicine, University of Edinburgh, UK.
J M Wardlaw1 Centre for Clinical Brain Sciences, University of Edinburgh, UK.

Funding

MRI+DTI-Based Tools for Analyzing White Matter VariationR01EB004155 · NIBIB · BROWN UNIVERSITY · PI LAIDLAW, DAVID H · 2005 to 2008
$2.0M
Medical Research Council MR/K026992/1NIBIB NIH HHS R01 EB004155
6 · The paper itself

Abstract

Objective The objective of this study was to investigate fatigue and cognitive impairments in systemic lupus erythematous (SLE) in relation to diffuse white matter microstructural brain damage. Methods Diffusion tensor MRI, used to generate biomarkers of brain white matter microstructural integrity, was obtained in patients with SLE and age-matched controls. Fatigue and cognitive function were assessed and related to SLE activity, clinical data and plasma biomarkers of inflammation and endothelial dysfunction. Results Fifty-one patients with SLE (mean age 48.8 ± 14.3 years) were included. Mean diffusivity (MD) was significantly higher in all white matter fibre tracts in SLE patients versus age-matched healthy controls ( p < 0.0001). Fatigue in SLE was higher than a normal reference range ( p < 0.0001) and associated with lower MD ( ß = -0.61, p = 0.02), depression ( ß = 0.17, p = 0.001), anxiety ( ß = 0.13, p = 0.006) and higher body mass index ( ß = 0.10, p = 0.004) in adjusted analyses. Poorer cognitive function was associated with longer SLE disease duration ( p = 0.003) and higher MD ( p = 0.03) and, in adjusted analysis, higher levels of IL-6 ( ß = -0.15, p = 0.02) but not with MD. Meta-analysis (10 studies, n = 261, including the present study) confirmed that patients with SLE have higher MD than controls. Conclusion Patients with SLE have more microstructural brain white matter damage for age than the general population, but this does not explain increased fatigue or lower cognition in SLE. The association between raised IL-6 and worse current cognitive function in SLE should be explored in larger datasets.

Indexed as

AdultAgedCognition DisordersDiffusion Tensor ImagingFatigueFemaleHumansInterleukin-6Lupus Erythematosus, SystemicMagnetic Resonance ImagingMaleMiddle AgedNeuropsychological TestsWhite MatterYoung AdultIL6 protein, humanInterleukin-6Autoimmune diseasescytokinesinflammationsystemic lupus erythematosus

Identifiers

PMID27687026
PMCPMC5374047

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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.