1
|
DiMarzio M, Madhavan R, Joel S, Hancu I, Fiveland E, Prusik J, Gillogly M, Rashid T, MacDonell J, Ashe J, Telkes I, Feustel P, Staudt MD, Shin DS, Durphy J, Hwang R, Hanspal E, Pilitsis JG. Use of Functional Magnetic Resonance Imaging to Assess How Motor Phenotypes of Parkinson's Disease Respond to Deep Brain Stimulation. Neuromodulation 2020; 23:515-524. [PMID: 32369255 DOI: 10.1111/ner.13160] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022]
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.
Collapse
Affiliation(s)
- Marisa DiMarzio
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | | | | | | | | | - Julia Prusik
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA.,Department of Neurosurgery, Albany Medical Center, Albany, NY, USA
| | - Michael Gillogly
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA
| | - Tanweer Rashid
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Jacquelyn MacDonell
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | | | - Ilknur Telkes
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Paul Feustel
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Michael D Staudt
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA
| | - Damian S Shin
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA.,Department of Neurology, Albany Medical Center, Albany, NY, USA
| | - Jennifer Durphy
- Department of Neurology, Albany Medical Center, Albany, NY, USA
| | - Roy Hwang
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA
| | - Era Hanspal
- Department of Neurology, Albany Medical Center, Albany, NY, USA
| | - Julie G Pilitsis
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA.,Department of Neurosurgery, Albany Medical Center, Albany, NY, USA
| |
Collapse
|