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August 16, 2016; 87 (7) Article

Functional MRI of disease progression in Parkinson disease and atypical parkinsonian syndromes

Roxana G. Burciu, Jae Woo Chung, Priyank Shukla, Edward Ofori, Hong Li, Nikolaus R. McFarland, Michael S. Okun, David E. Vaillancourt
First published July 15, 2016, DOI: https://doi.org/10.1212/WNL.0000000000002985
Roxana G. Burciu
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Jae Woo Chung
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Priyank Shukla
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Edward Ofori
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Hong Li
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Nikolaus R. McFarland
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Michael S. Okun
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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David E. Vaillancourt
From the Department of Applied Physiology and Kinesiology (R.G.B., J.W.C., P.S., E.O., D.E.V.) and the Departments of Neurology (N.R.M., M.S.O., D.E.V.) and Neurosurgery (M.S.O.), Center for Movement Disorders and Neurorestoration, and Department of Biomedical Engineering (D.E.V.), University of Florida, Gainesville; and Department of Public Health Sciences (H.L.), Medical University of South Carolina, Charleston.
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Citation
Functional MRI of disease progression in Parkinson disease and atypical parkinsonian syndromes
Roxana G. Burciu, Jae Woo Chung, Priyank Shukla, Edward Ofori, Hong Li, Nikolaus R. McFarland, Michael S. Okun, David E. Vaillancourt
Neurology Aug 2016, 87 (7) 709-717; DOI: 10.1212/WNL.0000000000002985

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Abstract

Objective: To explore longitudinal changes in brain activity in patients with Parkinson disease (PD), multiple system atrophy (MSA), and progressive supranuclear palsy (PSP) using task-based functional MRI (fMRI).

Methods: A total of 112 individuals were scanned 1 year apart while performing a unimanual grip force task: 46 PD, 13 MSA, 19 PSP, and 34 healthy controls. The outcome measure was percent signal change in prespecified regions of interest: putamen, primary motor cortex (M1), supplementary motor area (SMA), and superior motor regions of the cerebellum (lobules V–VI).

Results: Patients with PD showed a decline in functional activity over the course of 1 year in the putamen and M1 compared to controls. Changes after 1 year in MSA were exclusively extrastriatal, and included a reduction in functional activity in M1, SMA, and superior cerebellum. In PSP, all regions of interest were less active at 1 year compared to baseline. The functional activity of these regions did not change in the control group.

Conclusions: We provide evidence using task-based fMRI for cortical and striatal functional deterioration in PD over a 1-year period of time. Results also describe more widespread and unique patterns of functional changes in MSA and PSP compared to PD, suggesting distinct rates of disease progression in parkinsonian disorders that may assist in future clinical studies testing the potential efficacy of disease-modifying therapies.

GLOSSARY

ANOVA=
analysis of variance;
BDI=
Beck Depression Inventory;
FDR=
false discovery rate;
fMRI=
functional MRI;
LEDD=
levodopa equivalent daily dose;
M1=
primary motor cortex;
MANOVA=
multivariate analysis of variance;
MDS-UPDRS-III=
Movement Disorder Society Unified Parkinson's Disease Rating Scale;
MoCA=
Montreal Cognitive Assessment;
MSA=
multiple system atrophy;
MVC=
maximum voluntary contraction;
PD=
Parkinson disease;
PPB=
Purdue Pegboard Test;
PSP=
progressive supranuclear palsy;
ROI=
region of interest;
SMA=
supplementary motor area;
TE=
echo time;
TR=
repetition time

Footnotes

  • Go to Neurology.org for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Supplemental data at Neurology.org

  • Received January 25, 2016.
  • Accepted in final form May 9, 2016.
  • © 2016 American Academy of Neurology
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