Globus Pallidus Internus Deep Brain Stimulation as Rescue Therapy for Refractory Dyskinesias following Effective Subthalamic Nucleus Stimulation

2015 ◽  
Vol 93 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Raymond J. Cook ◽  
Lyndsey Jones ◽  
George Fracchia ◽  
Nathan Anderson ◽  
Jenny Miu ◽  
...  
Neurosurgery ◽  
2008 ◽  
Vol 62 (2) ◽  
pp. 311-325 ◽  
Author(s):  
Jorge Guridi ◽  
Jose A. Obeso ◽  
Maria C. Rodriguez-Oroz ◽  
Andres M. Lozano ◽  
Miguel Manrique

Abstract OBJECTIVE To assess the impact of different surgical targets and techniques, such as ablation and deep brain stimulation, to treat patients with L-dopa-induced dyskinesia (LID), a major therapeutic complication of Parkinson's disease. METHODS This review analyzes the effects of early surgical procedures to treat hyperkinesia and the current methods and targets used to combat LID in Parkinson's disease, which are mainly thalamotomy, pallidotomy, and deep brain stimulation of the globus pallidus internus and the subthalamic nucleus. RESULTS Available information indicates that surgery of the globus pallidus internus and thalamus (the pallidal receiving area) and of the subthalamic nucleus has a pronounced antidyskinetic effect. This effect is associated with a concomitant improvement in the parkinsonian (“off”-medication) state. Although it is more profound with pallidal and subthalamic surgery, such an effect can also be observed to some extent with thalamic surgery. The latter is attributable to the fact that surgery of the ventralis intermedius is primarily effective for treating tremor. An integral pallidothalamic pathway is needed for dyskinesia to be expressed. Thus, LID is less frequent after subthalamotomy or deep brain stimulation of the subthalamic nucleus through a functional effect mediated by the physiological normalization of the motor system and by an indirect effect associated with a reduction in the daily dose of L-dopa. CONCLUSION Surgery is the only treatment available for Parkinson's disease that can predictably improve both the parkinsonian motor syndrome and LID. The exact mechanisms involved in these effects are not well understood. Pallidal and thalamic surgery affecting pallidal relays reduce LID frequency by disrupting the pallidothalamic circuit, probably eliminating the neuronal activity associated with dyskinesia. Alternatively, the antidyskinetic effect of subthalamic nucleus surgery may in part be attributable to a reduction in the L-dopa dose as well as to the stabilization of the basal ganglia circuits after the surgical procedure.


Neurosurgery ◽  
2011 ◽  
Vol 68 (5) ◽  
pp. 1233-1238 ◽  
Author(s):  
Maren C. Locke ◽  
Samuel S. Wu ◽  
Kelly D. Foote ◽  
Marco Sassi ◽  
Charles E. Jacobson ◽  
...  

Abstract BACKGROUND: Parkinson's patients, on average, gain weight after deep brain stimulation (DBS). OBJECTIVE: To determine potential differences in weight gain when comparing the subthalamic nucleus and the globus pallidus internus target. METHODS: A retrospective analysis was performed on the prospective, randomized cohort of National Institutes of Health COMPARE trial DBS patients who received unilateral subthalamic nucleus or globus pallidus internus DBS. Baseline weights were recorded before DBS surgery and at 6, 12, and 18 months postoperatively. Relationships between weight change and changes in Beck Depression Inventory score, Unified Parkinson's Disease Rating Scale (UPDRS) motor score (part III) (also the dyskinesia duration and disability subscores from UPDRS IV), and Hoehn-Yahr stage were determined via Spearman's rank-order correlation coefficients. Regression analyses were performed to investigate the effects of potential factors on weight change over time. RESULTS: Patients in the COMPARE DBS cohort gained a significant amount of weight, a mean of 4.86 lb (standard deviation = 8.73) (P = .001), but there was no significant difference between subthalamic nucleus and globus pallidus internus targets (weight gain of 4.29 ± 6.79 and 5.38 ± 10.32 lb, respectively; P = .68). Weight gain did not correlate with Beck Depression Inventory score change, UPDRS motor score, dyskinesia duration, dyskinesia disability change, or the Hoehn-Yahr stage (P = .62, .21, and .31, respectively). No specific variable was associated with weight gain, and there were no differences in binge eating post-surgery in either target. CONCLUSION: There were significant changes in weight over time after DBS therapy. However, neither Beck Depression Inventory score change nor UPDRS score change or dyskinesia was correlated with weight gain. No significant factor was associated with the weight change.


2012 ◽  
Vol 116 (1) ◽  
pp. 95-98 ◽  
Author(s):  
Johannes C. Wöhrle ◽  
Christian Blahak ◽  
Hans-Holger Capelle ◽  
Wolfgang Fogel ◽  
Hansjoerg Bäzner ◽  
...  

Multifocal deep brain stimulation (DBS) is a new technique that has been introduced recently. A 39-year-old man with dystonia-parkinsonism underwent the simultaneous implantation of subthalamic nucleus (STN) and globus pallidus internus (GPi) DBS electrodes. While bilateral STN DBS controlled the parkinsonian symptoms well and allowed for a reduction in levodopa, the improvement of dystonia was only temporary. Additional GPi DBS also alleviated dystonic symptoms. Formal assessment at the 1-year follow-up showed that both the parkinsonian symptoms and the dystonia were markedly improved via continuous bilateral combined STN and GPi stimulation. Sustained benefit was achieved at 3 years postoperatively.


2012 ◽  
Vol 117 (6) ◽  
pp. 1141-1149 ◽  
Author(s):  
Laura Rocchi ◽  
Patricia Carlson-Kuhta ◽  
Lorenzo Chiari ◽  
Kim J. Burchiel ◽  
Penelope Hogarth ◽  
...  

Object Difficulty with step initiation, called “start hesitation,” is related to gait bradykinesia and is an early hallmark of gait freezing in Parkinson disease (PD). Authors of this study investigated the effects of deep brain stimulation (DBS) and levodopa on step initiation before and 6 months after DBS surgery in 29 patients with PD who were randomized to either the bilateral subthalamic nucleus (STN) or globus pallidus internus (GPi) as the DBS site. Methods The authors measured the amplitude and duration of anticipatory postural adjustments (APAs), the feed-forward postural preparation that precedes the onset of voluntary step initiation, based on center-of-pressure displacements on a force plate. They also measured the length and velocity of the first step using a motion analysis system to study kinematics. Some of the patients (22) were from a large, multicenter, double-blind clinical trial, and all patients in the study (29, PD-DBS group) were randomized to DBS in either the bilateral STN (15 patients) or bilateral GPi (14 patients). Differences in step initiation were investigated in 2 conditions before surgery (off/on levodopa) and in 4 conditions after surgery (off/on levodopa combined with off/on DBS). Twenty-eight elderly healthy control volunteers (CTRL group) were also tested, and 9 control volunteers with PD who met the criteria for DBS (PD-C group) were tested at baseline and 6 months later. Results Patients in the PD-DBS group had smaller amplitudes and longer durations of APAs compared with those in the 28 healthy control volunteers in all conditions. Before surgery, APAs improved with levodopa. After surgery, the APAs were significantly worse than in the best-treatment state before surgery (DOPA condition), and responsiveness to levodopa decreased. No differences in APAs were detected between the STN and GPi groups. A comparison with PD control volunteers who did not undergo DBS surgery confirmed that a deterioration in step preparation was not related to disease progression. Step length and velocity were smaller in the PD-DBS group than in controls in all conditions. Before surgery, levodopa improved the length and velocity of the first step. Both step length and velocity were unchanged in the best-treatment state before surgery (DOPA condition) as compared with after surgery (DBS+DOPA), with only step velocity in the STN group getting worse after surgery. Conclusions Six months of DBS in the STN or GPi impaired anticipatory postural preparation for step initiation, the opposite effect as with levodopa. Deep brain stimulation disrupted postural preparation more than step execution, suggesting independent motor pathways for preparation and execution of gait. Although turning the stimulators on after surgery combined with levodopa benefited the postural preparation to step, a comparison of pre- and postsurgery conditions suggests that either the surgery itself or 6 months of continuous stimulation may lead to an alteration of circuits or plastic changes that impair step initiation.


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