Evidence map›Paper›PMID 30138409›Full record

Trial reportPloS one2018

Stronger prediction of motor recovery and outcome post-stroke by cortico-spinal tract integrity than functional connectivity.

Leanne Y Lin, Lenny Ramsey, Nicholas V Metcalf, Jennifer Rengachary, Gordon L Shulman, Joshua S Shimony, Maurizio Corbetta

Open access · goldAbstract readClinical TrialMulticenter Study
In one paragraph

Trial report in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 51 citations in OpenAlex.

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  17. Observational
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  19. Dynamic Structural and Functional Reorganizations Following Motor Stroke.Medical science monitor : international medical journal of experimental and clinical research · 2021
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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 at 4 institutions in 1 country.

Leanne Y LinDepartment of Radiology, University of Kentucky, Lexington, Kentucky, United States of America.
Lenny RamseyPhysical Therapy Department, Carroll University, Waukesha, Wisconsin, United States of America.
Nicholas V MetcalfDepartment of Neurology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.
Jennifer RengacharyDepartment of Neurology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.
Gordon L ShulmanDepartment of Neurology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.
Joshua S ShimonyMallinckrodt Inst. of Radiology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.ORCID 0000-0002-6228-776X
Maurizio CorbettaDepartment of Neurology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.
Washington University in St. Louis · USCarroll University · USMallinckrodt (United States) · USUniversity of Kentucky · US

Funding

Washington University Intellectual and Developmental Disabilities Research Center-Administrative Down Syndrome SupplementU54HD087011 · NICHD · WASHINGTON UNIVERSITY · PI CONSTANTINO, JOHN N. · 2015 to 2019
$7.1M
Stroke, Brain Networks, and BehaviorR01NS095741 · NINDS · WASHINGTON UNIVERSITY · PI CORBETTA, MAURIZIO · 2015 to 2019
$3.0M
UNDERSTANDING THE EFFECTS OF STROKE USING FUNCTIONAL CONNECTIVITY MRIR01HD061117 · NICHD · WASHINGTON UNIVERSITY · PI CORBETTA, MAURIZIO · 2009 to 2013
$2.8M
NICHD NIH HHS R01 HD061117NICHD NIH HHS U54 HD087011NINDS NIH HHS R01 NS095741
6 · The paper itself

Abstract

objectivesTo examine longitudinal changes in structural and functional connectivity post-stroke in patients with motor impairment, and define their importance for recovery and outcome at 12 months.

methodsFirst-time stroke patients (N = 31) were studied at 1-2 weeks, 3 months, and 12 months post-injury with a validated motor battery and resting-state fMRI to measure inter-hemispheric functional connectivity (FC). Fractional anisotropy (FA) of the cortico-spinal tract (CST) was derived from diffusion tensor imaging as a measure of white matter organization. ANOVAs were used to test for changes in FC, FA, and motor performance scores over time, and regression analysis related motor outcome to clinical and neuroimaging variables.

resultsFA of the ipsilesional CST improved significantly from 3 to 12 months and was strongly correlated with motor performance. FA improved even in the absence of direct damage to the CST. Inter-hemispheric FC also improved over time, but did not correlate with motor performance at 12 months. Clinical variables (early motor score, education level, and age) predicted 80.4% of the variation of motor outcome, and FA increased the predictability to 84.6%. FC did not contribute to the prediction of motor outcome.

conclusionsStroke causes changes to the CST microstructure that can account for behavioral variability even in the absence of demonstrable lesion. Ipsilesional CST undergoes remodeling post-stroke, even past the three-month window when most of the motor recovery happens. FA of the CST, but not inter-hemispheric FC, can improve to the prediction of motor outcome based on early motor scores.

Indexed as

Diffusion Tensor ImagingMotor DisordersRecovery of FunctionSpinal CordStrokeAdultAgedFemaleHumansMaleMiddle AgedProspective Studies

Identifiers

PMID30138409
PMCPMC6107181
OpenAlexW2888297578

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.