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Sarva H, Rodriguez-Porcel F, Rivera F, Gonzalez CD, Barkan S, Tripathi S, Gatto E, Ruiz PG. The role of genetics in the treatment of dystonia with deep brain stimulation: Systematic review and Meta-analysis. J Neurol Sci 2024; 459:122970. [PMID: 38520940 DOI: 10.1016/j.jns.2024.122970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/15/2024] [Accepted: 03/17/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Dystonia is a movement disorder characterized by sustained or intermittent muscle contractions that lead to involuntary postures or repetitive movements. Genetic mutations are being increasingly recognized as a cause of dystonia. Deep brain stimulation (DBS) is one of the limited treatment options available. However, there are varying reports on its efficacy in genetic dystonias. This systematic review of the characteristics of genetic dystonias treated with DBS and their outcomes aims to aid in the evaluation of eligibility for such treatment. METHODS We performed a PUBMED search of all papers related to genetic dystonias and DBS up until April 2022. In addition to performing a systematic review, we also performed a meta-analysis to assess the role of the mutation on DBS response. We included cases that had a confirmed genetic mutation and DBS along with pre-and post-operative BFMDRS. RESULTS Ninety-one reports met our inclusion criteria and from them, 235 cases were analyzed. Based on our analysis DYT-TOR1A dystonia had the best evidence for DBS response and Rapid-Onset Dystonia Parkinsonism was among the least responsive to DBS. CONCLUSION While our report supports the role of genetics in DBS selection and response, it is limited by the rarity of the individual genetic conditions, the reliance on case reports and case series, and the limited ability to obtain genetic testing on a large scale in real-time as opposed to retrospectively as in many cases.
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Affiliation(s)
- Harini Sarva
- Parkinson's Disease and Movement Disorders Institute, Weill Cornell Medicine, 428 E72nd Street, Suite 400, NY, NY 10021, USA.
| | | | - Francisco Rivera
- CEMIC University Institute, School of Medicine, Department of Pharmacology, Buenos Aires, Argentina
| | - Claudio Daniel Gonzalez
- CEMIC University Institute, School of Medicine, Department of Pharmacology, Buenos Aires, Argentina
| | - Samantha Barkan
- Parkinson's Disease and Movement Disorders Institute, Weill Cornell Medicine, 428 E72nd Street, Suite 400, NY, NY 10021, USA
| | - Susmit Tripathi
- Parkinson's Disease and Movement Disorders Institute, Weill Cornell Medicine, 428 E72nd Street, Suite 400, NY, NY 10021, USA
| | - Emilia Gatto
- Instituto de Neurociencias Buenos Aires, INEBA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Pedro Garcia Ruiz
- Movement Disorders Unit, Department of Neurology, Fundacion Jimenez Diaz, Universidad Autónoma de Madrid, Madrid, Spain
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Averna A, Arlotti M, Rosa M, Chabardès S, Seigneuret E, Priori A, Moro E, Meoni S. Pallidal and Cortical Oscillations in Freely Moving Patients With Dystonia. Neuromodulation 2023; 26:1661-1667. [PMID: 34328685 DOI: 10.1111/ner.13503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To evaluate the correlation between the pallidal local field potentials (LFPs) activity and the cortical oscillations (at rest and during several motor tasks) in two freely moving patients with generalized dystonia and pallidal deep brain stimulation (DBS). MATERIALS AND METHODS Two women with isolated generalized dystonia were selected for bilateral globus pallidus internus (GPi) DBS. After the electrodes' implantation, cortical activity was recorded by a portable electroencephalography (EEG) system simultaneously with GPi LFPs activity, during several motor tasks, gait, and rest condition. Recordings were not performed during stimulation. EEG and LFPs signals relative to each specific movement were coupled together and grouped in neck/upper limbs movements and gait. Power spectral density (PSD), EEG-LFP coherence (through envelope of imaginary coherence operator), and 1/f exponent of LFP-PSD background were calculated. RESULTS In both patients, the pallidal LFPs PSD at rest was characterized by prominent 4-12 Hz activity. Voluntary movements increased activity in the theta (θ) band (4-7 Hz) compared to rest, in both LFPs and EEG signals. Gait induced a drastic raise of θ activity in both patients' pallidal activity, less marked for the EEG signal. A coherence peak within the 8-13 Hz range was found between pallidal LFPs and EEG recorded at rest. CONCLUSIONS Neck/upper limbs voluntary movements and gait suppressed the GPi-LFPs-cortical-EEG coherence and differently impacted both EEG and LFPs low frequency activity. These findings suggest a selective modulation of the cortico-basal ganglia network activity in dystonia.
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Affiliation(s)
- Alberto Averna
- "Aldo Ravelli" Center for Nanotechnology and Neurostimulation, University of Milan, Milan, Italy
| | - Mattia Arlotti
- Clinical Center for Neurotechnologies, Neuromodulation, and Movement Disorders, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Manuela Rosa
- Clinical Center for Neurotechnologies, Neuromodulation, and Movement Disorders, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stéphan Chabardès
- Université Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France; Division of Neurosurgery, Grenoble Alpes University Hospital Center, Grenoble, France
| | - Eric Seigneuret
- Université Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France; Division of Neurosurgery, Grenoble Alpes University Hospital Center, Grenoble, France
| | - Alberto Priori
- "Aldo Ravelli" Center for Nanotechnology and Neurostimulation, University of Milan, Milan, Italy; Neurology, Department of Health Sciences, San Paolo University Hospital, Azienda Socio Sanitaria Territoriale Santi Paolo e Carlo, University of Milan Medical School, Milan, Italy
| | - Elena Moro
- Université Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France; Movement Disorders Unit, Division of Neurology, CHU Grenoble Alpes, Grenoble, France
| | - Sara Meoni
- "Aldo Ravelli" Center for Nanotechnology and Neurostimulation, University of Milan, Milan, Italy; Université Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France; Movement Disorders Unit, Division of Neurology, CHU Grenoble Alpes, Grenoble, France.
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Li J, Li N, Wang X, Wang J, Wang X, Wang W. Long-Term Outcome of Subthalamic Deep Brain Stimulation for Generalized Isolated Dystonia. Neuromodulation 2023; 26:1653-1660. [PMID: 36028445 DOI: 10.1016/j.neurom.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 06/01/2022] [Accepted: 07/01/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Few studies have focused on subthalamic nucleus deep brain stimulation for refractory isolated dystonia, and the long-term outcomes are unclear. In this study, we evaluated the efficacy of subthalamic stimulation for generalized isolated dystonia for more than five years and explored the factors predicting clinical outcomes. MATERIALS AND METHODS A total of 16 patients with generalized isolated dystonia underwent a two-phase procedure for stimulation system implantation. After implanting the leads, we performed a test stimulation and observed the stimulation response. The severity of dystonia was assessed using a blinded rating of the Burke-Fahn-Marsden Dystonia Rating Scale based on videos recorded at scheduled times. RESULTS The mean follow-up time was 7.4 ± 2.2 years (5-12.5 years). The severity of dystonia improved significantly one year after surgery. The movement score decreased from 49.3 (40.9) points at baseline to 26.5 (43.5) points (-44.6%) at six months, 12.0 (22.5) points (-66.8%) at one year, 11.25 (17.6) points (-72.7%) at three years, and 12.5 (21.0) points (-72.6%) at the last follow-up. The improvement in motor symptoms resulted in a corresponding improvement in activities of daily living. Greater long-term outcomes were correlated with early stimulation responses, lower baseline movement scores, and female sex. When analyzed comprehensively, only the baseline movement score had meaningful predictive value for the outcome. CONCLUSIONS Our results indicate that subthalamic stimulation is effective and durable in treating generalized isolated dystonia. The subthalamic nucleus may be an alternative target for the treatment of refractory dystonia. Patients with less severe motor symptoms may benefit more from this treatment.
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Affiliation(s)
- Jiaming Li
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Nan Li
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xin Wang
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Jing Wang
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xuelian Wang
- Department of Neurosurgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China.
| | - Wei Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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Torgerson LN, Munoz K, Kostick K, Zuk P, Blumenthal-Barby J, Storch EA, Lázaro-Muñoz G. Clinical and Psychosocial Factors Considered When Deciding Whether to Offer Deep Brain Stimulation for Childhood Dystonia. Neuromodulation 2023; 26:1646-1652. [PMID: 35088744 DOI: 10.1016/j.neurom.2021.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/20/2021] [Accepted: 10/11/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Childhood dystonia is often nonresponsive to medications, and refractory cases are increasingly being treated with deep brain stimulation (DBS). However, many have noted that there is little consensus about when DBS should be offered, and there has been little examination of clinicians' decision-making process when determining whether to offer DBS for childhood dystonia. OBJECTIVES This study aimed to identify and examine the factors considered by pediatric movement disorder specialists before offering DBS. MATERIALS AND METHODS Semistructured interviews (N = 29) with pediatric dystonia clinicians were conducted, transcribed, and coded. Using thematic content analysis, nine central themes were identified when clinicians were asked about key factors, clinical factors, and psychosocial factors considered before offering pediatric DBS. RESULTS Clinicians identified nine main factors. Five of these were classified primarily as clinical factors: early intervention and younger age (raised by 86% of respondents), disease progression and symptom severity (83%), etiology and genetic status (79%), clinicians' perceived risks and benefits of DBS for the patient (79%), and exhaustion of other treatment options (55%). The remaining four were classified primarily as psychosocial factors: social and family support (raised by 97% of respondents), patient and caregiver expectations about outcomes and understanding of DBS treatment (90%), impact of dystonia on quality of life (69%), and financial resources and access to care (31%). CONCLUSIONS Candidacy determinations, in this context, are complicated by an interrelation of clinical and psychosocial factors that contribute to the decision. There is potential for bias when considering family support and quality of life. Uncertainty of outcomes related to the etiology of dystonia makes candidacy judgments challenging. More systematic examination of the characteristics and criteria used to identify pediatric patients with dystonia who can significantly benefit from DBS is necessary to develop clear guidelines and promote the well-being of these children.
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Affiliation(s)
- Laura N Torgerson
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX, USA
| | - Katrina Munoz
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX, USA
| | - Kristin Kostick
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX, USA
| | - Peter Zuk
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX, USA
| | | | - Eric A Storch
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
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El Otmani H, El Moutawakil B, Daghi M, Fadili O, Slassi I, El Azhari A, Essodegui F, Barrou L, Rafai MA, Lakhdar A. Deep Brain Stimulation for Dystonia: Experience of a Moroccan University Hospital. Pediatr Neurol 2023; 148:23-27. [PMID: 37651973 DOI: 10.1016/j.pediatrneurol.2023.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 07/17/2023] [Accepted: 08/02/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND Deep brain stimulation (DBS) is a well-established procedure that provides long-term symptom control of the third most common movement disorder: dystonia. In this study, we aim to report the experience of Ibn Rochd University Hospital in the treatment of dystonia using DBS of the globus pallidus internus, which represents an exceptional challenge for a developing country such as Morocco. METHODS Since 2013, we selected five eligible candidates for DBS surgery at the university hospital Ibn Rochd. A genetic assessment had been performed in four cases. Their motor and mental states were prospectively monitored using several validated scales, including Burke-Fahn-Marsden Dystonia Rating Scale, Mini Mental State Examination, 36-Item Short Form Survey, and Zarit scale. RESULTS Our sample had two clinical phenotypes of dystonia: isolated dystonia (in two patients) and combined dystonia (in three patients). Patients were aged 14 to 32 years, and their mean onset age ranged from 7 to 13 years with a mean progression duration of 9 years. Our results indicate successful treatment of patients with dystonia using DBS. Scores from the Burke-Fahn-Marsden Dystonia Rating Scale confirm improvements ranging from 40% to 95%. However, some potentially surgery-related complications could occur such as lead infection, which, in our experience, was reported in one case. CONCLUSION The experience of the university hospital Ibn Rochd regarding the use of DBS in treating dystonia was largely positive. However, the procedure faces challenges due to its complexity, specifically concerning its multidisciplinary nature, its genetic test costs, and the reluctance of pediatricians to get involved.
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Affiliation(s)
- Hicham El Otmani
- Neurology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco; Laboratory of Genetics and Molecular Pathology, Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Casablanca, Morocco.
| | - Bouchra El Moutawakil
- Neurology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco; Laboratory of Genetics and Molecular Pathology, Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mohamed Daghi
- Research Laboratory of Nervous System Diseases, Neurosensory Disorders & Disability, Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Casablanca, Morocco
| | - Omar Fadili
- Neurology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
| | - Ilham Slassi
- Neurology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
| | - Abdessamad El Azhari
- Neurosurgery Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
| | - Fatiha Essodegui
- Radiology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
| | - Lahoucine Barrou
- Anesthesia and Critical Care Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
| | - Mohammed Abdoh Rafai
- Neurology Department, Ibn Rochd University Hospital Center, Casablanca, Morocco; Research Laboratory of Nervous System Diseases, Neurosensory Disorders & Disability, Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Casablanca, Morocco
| | - Abdelhakim Lakhdar
- Research Laboratory of Nervous System Diseases, Neurosensory Disorders & Disability, Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Casablanca, Morocco; Neurosurgery Department, Ibn Rochd University Hospital Center, Casablanca, Morocco
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Remoli G, Tariciotti L, Remore LG, Palmisciano P, Sciancalepore F, Canevelli M, Lacorte E, Da Re F, Bruno G, Ferrarese C, Appollonio I, Locatelli M, Vanacore N. An updated overview of recent and ongoing deep brain stimulation (DBS) trials in patients with dementia: a systematic review. Neurol Sci 2023; 44:3395-3427. [PMID: 37204563 DOI: 10.1007/s10072-023-06821-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 04/18/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND Dementia affects more than 55 million people worldwide. Several technologies have been developed to slow cognitive decline: deep brain stimulation (DBS) of network targets in Alzheimer's disease (AD) and dementia with Lewy bodies (DLB) have been recently investigated. OBJECTIVE This study aimed to review the characteristics of the populations, protocols, and outcomes of patients with dementia enrolled in clinical trials investigating the feasibility and efficacy of DBS. MATERIALS AND METHODS A systematic search of all registered RCTs was performed on Clinicaltrials.gov and EudraCT, while a systematic literature review was conducted on PubMed, Scopus, Cochrane, and APA PsycInfo to identify published trials. RESULTS The literature search yielded 2122 records, and the clinical trial search 15 records. Overall, 17 studies were included. Two of 17 studies were open-label studies reporting no NCT/EUCT code and were analysed separately. Of 12 studies investigating the role of DBS in AD, we included 5 published RCTs, 2 unregistered open-label (OL) studies, 3 recruiting studies, and 2 unpublished trials with no evidence of completion. The overall risk of bias was assessed as moderate-high. Our review showed significant heterogeneity in the recruited populations regarding age, disease severity, informed consent availability, inclusion, and exclusion criteria. Notably, the standard mean of overall severe adverse events was moderately high (SAEs: 9.10 ± 7.10%). CONCLUSION The population investigated is small and heterogeneous, published results from clinical trials are under-represented, severe adverse events not negligible, and cognitive outcomes uncertain. Overall, the validity of these studies requires confirmation based on forthcoming higher-quality clinical trials.
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Affiliation(s)
- Giulia Remoli
- Neurology Section, School of Medicine and Surgery, Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milan, Italy
- Neurology Ward, San Gerardo Hospital, Monza, Italy
| | - Leonardo Tariciotti
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.
- University of Milan, Milan, Italy.
| | - Luigi Gianmaria Remore
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
- University of Milan, Milan, Italy
| | - Paolo Palmisciano
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Francesco Sciancalepore
- National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
| | - Marco Canevelli
- National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
- Department of Neuroscience, University of Rome "La Sapienza,", Rome, Italy
| | - Eleonora Lacorte
- National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
| | - Fulvio Da Re
- Neurology Ward, San Gerardo Hospital, Monza, Italy
| | - Giuseppe Bruno
- Department of Neuroscience, University of Rome "La Sapienza,", Rome, Italy
| | - Carlo Ferrarese
- Neurology Section, School of Medicine and Surgery, Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milan, Italy
- Neurology Ward, San Gerardo Hospital, Monza, Italy
| | - Ildebrando Appollonio
- Neurology Section, School of Medicine and Surgery, Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milan, Italy
- Neurology Ward, San Gerardo Hospital, Monza, Italy
| | - Marco Locatelli
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Aldo Ravelli Research Center for Neurotechnology and Experimental Brain Therapeutics, University of Milan, Milan, Italy
| | - Nicola Vanacore
- National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
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Tai CH, Chou SC, Lin CH, Lee WT, Wu RM, Tseng SH. Long-Term Outcomes of Idiopathic and Acquired Dystonia After Pallidal Deep Brain Stimulation: A Case Series. World Neurosurg 2022; 167:e575-e582. [PMID: 35995355 DOI: 10.1016/j.wneu.2022.08.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/10/2022] [Accepted: 08/10/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Among dystonia patients receiving globus pallidus internus (GPi) deep brain stimulation (DBS), long-term outcomes remain to be established. To report the long-term outcomes of GPi DBS in a patient cohort with idiopathic and acquired dystonia. METHODS In this long-term follow-up cohort, there were 4 patients with idiopathic dystonia and 2 patients with acquired dystonia. The Burke-Fahn-Marsden Dystonia Rating Scale was used to evaluate 6 consecutive patients preoperatively and at 6 months, 12 months, and the last follow-up. The relationship between etiology and clinical improvement was analyzed. Stimulation parameters were evaluated for similarities and differences among these patients. RESULTS The mean follow-up of our cohort was 65.3 months (median 40.5 months). The average improvement in the Burke-Fahn-Marsden Dystonia Rating Scale (mean ± SEM) were 56% ± 7.6, 67% ± 6.8 and 66% ± 9.7 at 6 months, 12 months, and the last follow-up, respectively. There was greater improvement during the long-term follow-up in the 4 patients with idiopathic dystonia than in the 2 patients with acquired dystonia. The 2 most ventral electrodes (contact 0 and 1) were activated in all 11 leads in this cohort. The average stimulation intensity, pulse width and frequency were 2.0 ± 0.24 mA, 252 ± 43 μs, and 99 ± 6.0 Hz, respectively. CONCLUSIONS Isolated dystonia, either monogenic or idiopathic, usually responds better to GPi DBS than to acquired dystonia. Selection of patients by dystonia etiology, accurate placement of DBS leads in GPi targets, and proper stimulation programming are crucial to achieve better long-term outcomes.
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Affiliation(s)
- Chun-Hwei Tai
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Sheng-Che Chou
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin-Hsien Lin
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wang-Tso Lee
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ruey-Meei Wu
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Sheng-Hong Tseng
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
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Romano M, Bagnato S, Altavista MC, Avanzino L, Belvisi D, Bologna M, Bono F, Carecchio M, Castagna A, Ceravolo R, Conte A, Cosentino G, Eleopra R, Ercoli T, Esposito M, Fabbrini G, Ferrazzano G, Lalli S, Mascia MM, Osio M, Pellicciari R, Petrucci S, Valente EM, Valentino F, Zappia M, Zibetti M, Girlanda P, Tinazzi M, Defazio G, Berardelli A. Diagnostic and therapeutic recommendations in adult dystonia: a joint document by the Italian Society of Neurology, the Italian Academy for the Study of Parkinson’s Disease and Movement Disorders, and the Italian Network on Botulinum Toxin. Neurol Sci 2022; 43:6929-6945. [DOI: 10.1007/s10072-022-06424-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/21/2022] [Indexed: 11/07/2022]
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Deep brain stimulation in dystonia: factors contributing to variability in outcome in short and long term follow-up. Curr Opin Neurol 2022; 35:510-517. [PMID: 35787538 DOI: 10.1097/wco.0000000000001072] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW Deep brain stimulation (DBS) is currently the most effective treatment for medically refractory dystonia with globus pallidus internus (GPi) usually the preferred target. Despite the overall success of DBS in dystonia, there remains variability in treatment outcome in both short and long-term follow-up, due to various factors. Factors contributing to variability in outcome comprise 'Dystonia Related' including dystonia classification, semiology, duration, body distribution, orthopaedic deformity, aetiology and genetic cause. The majority of these factors are identifiable from clinical assessment, brain MRI and genetic testing, and therefore merit careful preoperative consideration. 'DBS related' factors include brain target, accuracy of lead placement, stimulation parameters, time allowed for response, neurostimulation technology employed and DBS induced side-effects. In this review, factors contributing to variability in short and long-term dystonia DBS outcome are reviewed and discussed. RECENT FINDINGS The recognition of differential DBS benefit in monogenic dystonia, increasing experience with subthalamic nucleus (STN) DBS and in DBS for Meige syndrome, elucidation of DBS side effects and novel neurophysiological and imaging techniques to assist in predicting clinical outcome. SUMMARY Improved understanding of factors contributing to variability of DBS outcome in dystonia may assist in patient selection and predicting surgical outcomes.
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Kamel WA, Majumdar P, Matis G, Fenoy AJ, Balakrishnan S, Zirh AT, Cevik A, Tomar AK, Ouerchefani N. Surgical Management for Dystonia: Efficacy of Deep Brain Stimulation in the Long Term. Neurol Int 2021; 13:371-386. [PMID: 34449699 PMCID: PMC8395937 DOI: 10.3390/neurolint13030037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/22/2021] [Accepted: 07/25/2021] [Indexed: 11/16/2022] Open
Abstract
Introduction: Dystonia is a movement disorder substantially affecting the quality of life. Botulinum Neurotoxin (BoNT) is used intramuscularly as a treatment for dystonia; however, not all dystonia patients respond to this treatment. Deep brain stimulation (DBS) is an established treatment for Parkinson’s disease (PD) and essential tremor, but it can help in dystonia as well. Objectives: We studied a total of 67 dystonia patients who were treated with DBS over a period of 7 years to find out the long-term efficacy of DBS in those patients. First, we calculated patient improvement in post-surgery follow-up programs using the Global Dystonia Severity scale (GDS) and Burke–Fahn–Marsden dystonia rating scale (BFMDRS). Secondly, we analyzed the scales scores to see if there was any statistical significance. Methods: In our study we analyzed patients with ages from 38 to 78 years with dystonia who underwent DBS surgery between January 2014 and December 2020 in four different centers (India, Kuwait, Egypt, and Turkey). The motor response to DBS surgery was retrospectively measured for each patient during every follow-up visit using the GDS and the BFMDRS scales. Results: Five to 7 years post-DBS, the mean reduction in the GDS score was 30 ± 1.0 and for the BFMDRS score 26 ± 1.0. The longitudinal change in scores at 12 and 24 months post-op was also significant with mean reductions in GDS and BFMDRS scores of 68 ± 1.0 and 56 ± 1.0, respectively. The p-values were <0.05 for our post-DBS dystonia patients. Conclusions: This study illustrates DBS is an established, effective treatment option for patients with different dystonias, such as generalized, cervical, and various brain pathology-induced dystonias. Although symptoms are not completely eliminated, continuous improvements are noticed throughout the post-stimulation time frame.
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Affiliation(s)
- Walaa A. Kamel
- Neurology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef 62511, Egypt;
- Neurology Department, Ibn-Sina Hospital, Kuwait City 25427, Kuwait
| | - Pritam Majumdar
- Department of Stereotactic and Functional Neurosurgery, University Cologne Hospital, 50931 Cologne, Germany;
- Correspondence:
| | - Georgios Matis
- Department of Stereotactic and Functional Neurosurgery, University Cologne Hospital, 50931 Cologne, Germany;
| | - Albert J. Fenoy
- Department of Neurosurgery, McGovern Medical School, The University of Texas at Houston, UTHealth Neurosciences, Houston, TX 77030, USA;
| | - Shankar Balakrishnan
- Department of Neurology and Neuromodulation, MIOT International Hospital, Hennai 600089, India;
| | - Ali T. Zirh
- Department of Neurosurgery, Istanbul Medipol University, Istanbul 34810, Turkey;
| | - Aslihan Cevik
- Department of Neurosurgery, Istanbul Aydin University, Istanbul Medical Park Florya, Istanbul 34295, Turkey;
| | - Amit Kumar Tomar
- Department of Anesthesia and Neurosurgery, Indo-Gulf Hospital, Noida 201301, India;
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11
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Wang D, Tan J, Zhu H, Mei Y, Liu X. Biomedical Implants with Charge-Transfer Monitoring and Regulating Abilities. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004393. [PMID: 34166584 PMCID: PMC8373130 DOI: 10.1002/advs.202004393] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/12/2021] [Indexed: 05/06/2023]
Abstract
Transmembrane charge (ion/electron) transfer is essential for maintaining cellular homeostasis and is involved in many biological processes, from protein synthesis to embryonic development in organisms. Designing implant devices that can detect or regulate cellular transmembrane charge transfer is expected to sense and modulate the behaviors of host cells and tissues. Thus, charge transfer can be regarded as a bridge connecting living systems and human-made implantable devices. This review describes the mode and mechanism of charge transfer between organisms and nonliving materials, and summarizes the strategies to endow implants with charge-transfer regulating or monitoring abilities. Furthermore, three major charge-transfer controlling systems, including wired, self-activated, and stimuli-responsive biomedical implants, as well as the design principles and pivotal materials are systematically elaborated. The clinical challenges and the prospects for future development of these implant devices are also discussed.
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Affiliation(s)
- Donghui Wang
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- School of Materials Science and EngineeringHebei University of TechnologyTianjin300130China
| | - Ji Tan
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
| | - Hongqin Zhu
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- Department of Materials ScienceFudan UniversityShanghai200433China
| | - Yongfeng Mei
- Department of Materials ScienceFudan UniversityShanghai200433China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- School of Chemistry and Materials ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China
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12
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Ren H, Wen R, Wang W, Li D, Wang M, Gao Y, Xu Y, Wu Y. Long-term efficacy of GPi DBS for craniofacial dystonia: a retrospective report of 13 cases. Neurosurg Rev 2021; 45:673-682. [PMID: 34185189 DOI: 10.1007/s10143-021-01584-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 05/01/2021] [Accepted: 06/10/2021] [Indexed: 02/05/2023]
Abstract
This study evaluated the long-term efficacy of globus pallidus internus (GPi) deep brain stimulation (DBS) in the treatment of craniofacial dystonia (Meige syndrome) and investigated the correlation between the volume of tissue activated (VTA) in the GPi and each subregion and movement score improvement. We retrospectively analyzed the clinical data of 13 patients with drug-refractory Meige syndrome who were treated with GPi DBS. The pre- and postoperative Burke-Fahn-Marsden Dystonia Rating Scale (BFMDRS) scores were compared. The relationships between the preoperative baseline variables and improvement in the BFMDRS-Movement (BFMDRS-M) score were analyzed. LEAD-DBS software was used for the three-dimensional reconstruction of the GPi and implanted electrodes. The correlations between the GPi-VTA and score improvement were analyzed. The average follow-up period was 36.6 ± 11.0 months (18-55 months). At 3 months after the stimulation and the final follow-up visit, the improvements in the BFMDRS-M score were 58.2 and 54.6%, and the improvements in the BFMDRS-Disability (BFMDRS-D) score were 53.6 and 51.7%, respectively. At the final follow-up visit, the improvements in the BFMDRS-M scores of the eye, mouth, and speech/swallowing were significant (P < 0.001). Age was an independent predictor of improvement in the BFMDRS-M score after DBS (P = 0.005). A decrease in the BFMDRS-M score was significantly positively correlated with the GPi-VTA (r = 0.757, P = 0.003). GPi DBS is an effective method for treating drug-refractory Meige syndrome. LEAD-DBS software can be used as an effective aid for visualization programming after DBS.
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Affiliation(s)
- Haibo Ren
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China.,Department of Neurosurgery, Nanchong Central Hospital, Nanchong, China
| | - Rong Wen
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China.
| | - Denghui Li
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China
| | - Mengqi Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China
| | - Yuan Gao
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China
| | - Yang Xu
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China
| | - Yang Wu
- Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan Province, China
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13
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Eleopra R, Rinaldo S, Devigili G, Mondani M, D'Auria S, Golfrè Andreasi N, Skrap M, Lettieri C. Globus Pallidus Internus Deep Brain Stimulation Using Frame-Based vs. Frameless Stereotaxy in Dystonia: A Single-Center Experience. Front Neurol 2021; 12:643757. [PMID: 34267717 PMCID: PMC8276885 DOI: 10.3389/fneur.2021.643757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/30/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Bilateral globus pallidus internus deep brain stimulation (GPi-DBS) is an established and effective therapy for primary refractory dystonia. However, the comparison of frameless vs. frame-based DBS surgery technique is still controversial. This retrospective study aims to compare the clinical outcome of two GPi-DBS surgical techniques for patients affected by primary generalized or multi-segmental dystonia. Methods: For lead's stereotaxic placement, 10 patients underwent frame-based surgery and the other 10 subjects DBS surgery with a frameless technique. Clinical features were evaluated at baseline and 6 and 12 months after surgery by means of the Burke–Fahn–Marsden Dystonia Rating Scale. Results: Frame-based GPi-DBS and frameless stereotaxic group revealed a comparable clinical outcome with no surgical complications. Conclusions: Frameless technique is safe and well-tolerated by patients and showed similar effectiveness of the frame-based stereotaxic surgery during GPi-DBS for primary dystonia. Notably, it could be a valid alternative solution because of the great advantage in improving the patient's discomfort during awake surgery.
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Affiliation(s)
- Roberto Eleopra
- Parkinson's Disease and Movement Disorders Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Sara Rinaldo
- Parkinson's Disease and Movement Disorders Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Grazia Devigili
- Parkinson's Disease and Movement Disorders Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Massimo Mondani
- Neurosurgery Unit, "S. Maria della Misericordia" University Hospital, Udine, Italy
| | - Stanislao D'Auria
- Neurosurgery Unit, "S. Maria della Misericordia" University Hospital, Udine, Italy
| | - Nico Golfrè Andreasi
- Parkinson's Disease and Movement Disorders Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Miran Skrap
- Neurosurgery Unit, "S. Maria della Misericordia" University Hospital, Udine, Italy
| | - Christian Lettieri
- Neurology Unit, "S. Maria della Misericordia" University Hospital, Udine, Italy
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14
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Tai CH, Lee WT, Tseng SH. DYT6 Dystonia Mimicking Adolescent Idiopathic Scoliosis Successfully Treated by Pallidal Stimulation. Int Med Case Rep J 2021; 14:315-321. [PMID: 34012300 PMCID: PMC8128503 DOI: 10.2147/imcrj.s307010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/26/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Dystonia type 6 (DYT6) is an autosomal dominant monogenic movement disorder that often involves craniocervical and laryngeal regions, but can in rare circumstance present as trunk dystonia or severe scoliosis. Deep brain stimulation of the globus pallidus internus (GPi-DBS) has yielded favorable results in the treatment of DYT6 patients. This report describes the case of a 14-year-old male adolescent with DYT6 dystonia and severe scoliosis who was successfully treated by GPi DBS. Patients and Methods The diagnosis of DYT6 dystonia was made after excluding other etiologies and was confirmed by next-generation sequencing. The patient underwent bilateral GPi-DBS implantation surgery under general anesthesia. Results The patient’s Burke–Fahn–Marsden Dystonia Rating Scale score was 24 before surgery and decreased to 13.5 at 3 months, 3 at 6 months, and 2 at 12 months after bilateral GPi-DBS, corresponding to a 91% improvement from baseline to 12 months post-surgery. The patient’s scoliosis improved significantly within 6 months after DBS. No complications occurred during surgery. Conclusion An adolescent DYT6 patient with dystonia-related severe scoliosis was treated by bilateral GPi-DBS. The patient had an excellent outcome at 12 months after surgery, which prevented him from developing severe spinal deformity and disability. Early diagnosis of dystonia in adolescent patients can lead to timely and effective treatment. The etiology of severe scoliosis in adolescents should be carefully evaluated and differential diagnosis including dystonia should be considered. GPi-DBS in patients with DYT6 dystonia can prevent deformity.
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Affiliation(s)
- Chun-Hwei Tai
- Department of Neurology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Wang-Tso Lee
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Sheng-Hong Tseng
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
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15
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Kim HJ, Jeon B. Arching deep brain stimulation in dystonia types. J Neural Transm (Vienna) 2021; 128:539-547. [PMID: 33740122 DOI: 10.1007/s00702-021-02304-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/11/2020] [Indexed: 12/29/2022]
Abstract
Although medical treatment including botulinum toxic injection is the first-line treatment for dystonia, response is insufficient in many patients. In these patients, deep brain stimulation (DBS) can provide significant clinical improvement. Mounting evidence indicates that DBS is an effective and safe treatment for dystonia, especially for idiopathic and inherited isolated generalized/segmental dystonia, including DYT-TOR1A. Other inherited dystonia and acquired dystonia also respond to DBS to varying degrees. For Meige syndrome (craniofacial dystonia), other focal dystonia, and some rare inherited dystonia, further evidences are still needed to evaluate the role of DBS. Because short disease duration at DBS surgery and absence of fixed musculoskeletal deformity are associated with better outcome, DBS should be considered as early as possible when indicated after careful evaluation including genetic work-up. This review will focus on the factors to be considered in DBS for patients with dystonia and the outcome of DBS in the different types of dystonia.
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Affiliation(s)
- Han-Joon Kim
- Department of Neurology and Movement Disorder Center, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Beomseok Jeon
- Department of Neurology and Movement Disorder Center, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
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16
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Muñoz KA, Blumenthal-Barby J, Storch EA, Torgerson L, Lázaro-Muñoz G. Pediatric Deep Brain Stimulation for Dystonia: Current State and Ethical Considerations. Camb Q Healthc Ethics 2020; 29:557-573. [PMID: 32892777 PMCID: PMC9426302 DOI: 10.1017/s0963180120000316] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dystonia is a movement disorder that can have a debilitating impact on motor functions and quality of life. There are 250,000 cases in the United States, most with childhood onset. Due to the limited effectiveness and side effects of available treatments, pediatric deep brain stimulation (pDBS) has emerged as an intervention for refractory dystonia. However, there is limited clinical and neuroethics research in this area of clinical practice. This paper examines whether it is ethically justified to offer pDBS to children with refractory dystonia. Given the favorable risk-benefit profile, it is concluded that offering pDBS is ethically justified for certain etiologies of dystonia, but it is less clear for others. In addition, various ethical and policy concerns are discussed, which need to be addressed to optimize the practice of offering pDBS for dystonia. Strategies are proposed to help address these concerns as pDBS continues to expand.
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Affiliation(s)
- Katrina A. Muñoz
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX
| | | | - Eric A. Storch
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX
| | - Laura Torgerson
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX
| | - Gabriel Lázaro-Muñoz
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX
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17
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Macerollo A, Sajin V, Bonello M, Barghava D, Alusi SH, Eldridge PR, Osman-Farah J. Deep brain stimulation in dystonia: State of art and future directions. J Neurosci Methods 2020; 340:108750. [DOI: 10.1016/j.jneumeth.2020.108750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/19/2020] [Accepted: 04/20/2020] [Indexed: 01/03/2023]
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18
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Artusi CA, Dwivedi A, Romagnolo A, Bortolani S, Marsili L, Imbalzano G, Sturchio A, Keeling EG, Zibetti M, Contarino MF, Fasano A, Tagliati M, Okun MS, Espay AJ, Lopiano L, Merola A. Differential response to pallidal deep brain stimulation among monogenic dystonias: systematic review and meta-analysis. J Neurol Neurosurg Psychiatry 2020; 91:426-433. [PMID: 32079672 DOI: 10.1136/jnnp-2019-322169] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/19/2019] [Accepted: 01/27/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Genetic subtypes of dystonia may respond differentially to deep brain stimulation of the globus pallidus pars interna (GPi DBS). We sought to compare GPi DBS outcomes among the most common monogenic dystonias. METHODS This systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses and Meta-analysis of Observational Studies in Epidemiology guidelines. We searched PubMed for studies on genetically confirmed monogenic dystonia treated with GPi DBS documenting pre-surgical and post-surgical assessments using the Burke-Fahn-Marsden Dystonia Rating Scale Motor Score (BFMMS) and Burke-Fahn-Marsden Disability Score (BFMDS). We performed (i) meta-analysis for each gene mutation; (ii) weighted ordinary linear regression analyses to compare BFMMS and BFMDS outcomes between DYT-TOR1A and other monogenic dystonias, adjusting for age and disease duration and (iii) weighted linear regression analysis to estimate the effect of age, sex and disease duration on GPi DBS outcomes. Results were summarised with mean change and 95% CI. RESULTS DYT-TOR1A (68%, 38.4 points; p<0.001), DYT-THAP1 (37% 14.5 points; p<0.001) and NBIA/DYT-PANK2 (27%, 21.4 points; p<0.001) improved in BFMMS; only DYT-TOR1A improved in BFMDS (69%, 9.7 points; p<0.001). Improvement in DYT-TOR1A was significantly greater than in DYT-THAP1 (BFMMS -31%), NBIA/DYT-PANK2 (BFMMS -35%; BFMDS -53%) and CHOR/DYT-ADCY5 (BFMMS -36%; BFMDS -42%). Worse motor outcomes were associated with longer dystonia duration and older age at dystonia onset in DYT-TOR1A, longer dystonia duration in DYT/PARK-TAF1 and younger age at dystonia onset in DYT-SGCE. CONCLUSIONS GPi DBS outcomes vary across monogenic dystonias. These data serve to inform patient selection and prognostic counselling.
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Affiliation(s)
- Carlo Alberto Artusi
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Alok Dwivedi
- Texas Tech University Health Sciences Center El Paso, El Paso, Texas, USA
| | - Alberto Romagnolo
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Sara Bortolani
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Luca Marsili
- Department of Neurology, University of Cincinnati, Cincinnati, Ohio, USA
| | - Gabriele Imbalzano
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Andrea Sturchio
- Department of Neurology, University of Cincinnati, Cincinnati, Ohio, USA
| | | | - Maurizio Zibetti
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Maria Fiorella Contarino
- Department of Neurology, Haga Teaching Hospital, The Hague, The Netherlands.,Leids Universitair Medisch Centrum, Leiden, The Netherlands
| | - Alfonso Fasano
- Morton and Gloria Shulman Movement Disorders Clinic. Division of Neurology, Toronto Western Hospital, Toronto, Ontario, Canada.,Krembil Research Institute, Toronto, Ontario, Canada
| | - Michele Tagliati
- Department of Neurology, Cedars Sinai Medical Center, Los Angeles, California, USA
| | - M S Okun
- Department of Neurology, University of Florida, Gainesville, Florida, USA
| | - Alberto J Espay
- Department of Neurology, University of Cincinnati, Cincinnati, Ohio, USA
| | - Leonardo Lopiano
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Aristide Merola
- Department of Neurology, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
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19
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Stavrinou LC, Liouta E, Boviatsis EJ, Leonardos A, Gatzonis S, Stathis P, Sakas DE, Angelakis E. Effect of constant-current pallidal deep brain stimulation for primary dystonia on cognition, mood and quality of life: Results from a prospective pilot trial. Clin Neurol Neurosurg 2019; 185:105460. [DOI: 10.1016/j.clineuro.2019.105460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/28/2019] [Accepted: 08/06/2019] [Indexed: 01/21/2023]
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Gonzalez-Escamilla G, Muthuraman M, Reich MM, Koirala N, Riedel C, Glaser M, Lange F, Deuschl G, Volkmann J, Groppa S. Cortical network fingerprints predict deep brain stimulation outcome in dystonia. Mov Disord 2019; 34:1537-1546. [PMID: 31433874 DOI: 10.1002/mds.27808] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 07/02/2019] [Accepted: 07/08/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Deep brain stimulation (DBS) is an effective evidence-based therapy for dystonia. However, no unequivocal predictors of therapy responses exist. We investigated whether patients optimally responding to DBS present distinct brain network organization and structural patterns. METHODS From a German multicenter cohort of 82 dystonia patients with segmental and generalized dystonia who received DBS implantation in the globus pallidus internus, we classified patients based on the clinical response 3 years after DBS. Patients were assigned to the superior-outcome group or moderate-outcome group, depending on whether they had above or below 70% motor improvement, respectively. Fifty-one patients met MRI-quality and treatment response requirements (mean age, 51.3 ± 13.2 years; 25 female) and were included in further analysis. From preoperative MRI we assessed cortical thickness and structural covariance, which were then fed into network analysis using graph theory. We designed a support vector machine to classify subjects for the clinical response based on individual gray-matter fingerprints. RESULTS The moderate-outcome group showed cortical atrophy mainly in the sensorimotor and visuomotor areas and disturbed network topology in these regions. The structural integrity of the cortical mantle explained about 45% of the DBS stimulation amplitude for optimal response in individual subjects. Classification analyses achieved up to 88% of accuracy using individual gray-matter atrophy patterns to predict DBS outcomes. CONCLUSIONS The analysis of cortical integrity, informed by group-level network properties, could be developed into independent predictors to identify dystonia patients who benefit from DBS. © 2019 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Gabriel Gonzalez-Escamilla
- Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Muthuraman Muthuraman
- Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Martin M Reich
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Nabin Koirala
- Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christian Riedel
- Department of Neuroradiology, UKSH, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Martin Glaser
- Department of Neurosurgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Florian Lange
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Günther Deuschl
- Department of Neurology, UKSH, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Jens Volkmann
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Sergiu Groppa
- Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
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21
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Ortiz RM, Scheperjans F, Pekkonen E. Deep brain stimulation for dystonia in Finland during 2007-2016. BMC Neurol 2019; 19:137. [PMID: 31234792 PMCID: PMC6589889 DOI: 10.1186/s12883-019-1370-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 06/18/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Dystonia is a movement disorder substantially affecting the quality of life and the ability to work. A proportion of patients does not respond to first line pharmacotherapy. Deep brain stimulation (DBS) is established as a primary operative treatment option for severe drug resistant dystonia. We studied dystonia patients treated with DBS in Finland between the years 2007-2016 to evaluate the use and outcomes of DBS treatment. METHODS We analysed the hospital records of dystonia patients, who underwent DBS operation during 2007-2016 in Finland. The clinical and technical parameters were recorded as well as preoperative assessments and treatments. The response to DBS was evaluated retrospectively using the Global Dystonia Rating Scale (GDS). RESULTS Out of 585 dB implantations during the study period, 37 were done for dystonia. The clinical response improved significantly with time in the isolated focal dystonia group, and at 12 months, 22 of 32 patients had over 50% alleviation of the GDS score. There was only one subclinical intracerebral haemorrhage, and four infections leading to revision. Speech impairment and limb coordination problems were common stimulation- related adverse events and were mostly resolved or relieved with the adjustment of stimulation parameters. CONCLUSIONS DBS seems to be beneficial in dystonia. Although DBS is indicated for dystonia in Finland, the number of operations did not increase at the same rate as DBS operations in general. DBS appears to be a safe and effective treatment for focal as well as generalized dystonia.
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Affiliation(s)
- Rebekka M Ortiz
- Department of Neurology, Helsinki University Hospital, Haartmaninkatu 4, 00029 HUS, Helsinki, Finland. .,Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland.
| | - Filip Scheperjans
- Department of Neurology, Helsinki University Hospital, Haartmaninkatu 4, 00029 HUS, Helsinki, Finland.,Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
| | - Eero Pekkonen
- Department of Neurology, Helsinki University Hospital, Haartmaninkatu 4, 00029 HUS, Helsinki, Finland.,Department of Clinical Neurosciences (Neurology), University of Helsinki, Helsinki, Finland
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22
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Cury RG, Kalia SK, Shah BB, Jimenez-Shahed J, Prashanth LK, Moro E. Surgical treatment of dystonia. Expert Rev Neurother 2018; 18:477-492. [PMID: 29781334 DOI: 10.1080/14737175.2018.1478288] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Treatment of dystonia should be individualized and tailored to the specific needs of patients. Surgical treatment is an important option in medically refractory cases. Several issues regarding type of the surgical intervention, targets, and predict factors of benefit are still under debate. Areas covered: To date, several clinical trials have proven the benefit and safety of deep brain stimulation (DBS) for inherited and idiopathic isolated dystonia, whereas there is still insufficient evidence in combined and acquired dystonia. The globus pallidus internus (GPi) is the target with the best evidence, but data on the subthalamic nucleus seems also to be promising. Evidence suggests that younger patients with shorter disease duration experience greater benefit following DBS. Pallidotomy and thalamotomy are currently used in subset of carefully selected patients. The development of MRI-guided focused ultrasound might bring new options to ablation approach in dystonia. Expert commentary: GPi-DBS is effective and safe in isolated dystonia and should not be delayed when symptoms compromise quality of life and functionality. Identifying the best candidates to surgery on acquired and combined dystonias is still necessary. New insights about pathophysiology of dystonia and new technological advances will undoubtedly help to tailor surgery and optimize clinical effects.
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Affiliation(s)
- Rubens Gisbert Cury
- a Service de Neurologie, Centre Hospitalier Universitaire de Grenoble , Université Grenoble Alpes , Grenoble , France.,b Department of Neurology, School of Medicine , University of São Paulo , São Paulo , Brazil
| | - Suneil Kumar Kalia
- c Division of Neurosurgery and Krembil Research Institute, Department of Surgery , University of Toronto , Toronto , Canada
| | - Binit Bipin Shah
- d Parkinson's Disease and Movement Disorders Center, Department of Neurology , University of Virginia , Charlottesville , VA , USA
| | - Joohi Jimenez-Shahed
- e Parkinson's Disease Center and Movement Disorders Clinic , Baylor College of Medicine , Houston , TX , USA
| | | | - Elena Moro
- a Service de Neurologie, Centre Hospitalier Universitaire de Grenoble , Université Grenoble Alpes , Grenoble , France
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Pagliano E, Baranello G, Masson R, Foscan M, Arnoldi MT, Marchi A, Aprile G, Pantaleoni C. Outcome measures for children with movement disorders. Eur J Paediatr Neurol 2018; 22:346-353. [PMID: 29475818 DOI: 10.1016/j.ejpn.2018.01.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 01/11/2018] [Accepted: 01/16/2018] [Indexed: 11/30/2022]
Abstract
The huge contribution of advances in the pediatric neurosciences, improvements in clinical practice, and new therapeutic options, has led to the development of new models of treatment and rehabilitation for dystonia in the last decade. It is now generally agreed that a multidimensional therapeutic approach is needed for children with motor disorders, whose motor function-conceived as a complex perceptive, motor and cognitive process - is impaired at a crucial time in their development, with a fall out on how their various adaptive functions evolve. Neurophysiological studies, modern neuroimaging techniques, and advances in cognitive psychology have all contributed to improving our understanding of the potential effects of treatments in early age - not only on the symptoms, but also on plasticity processes and neuronal reorganization. The International Classification of Functioning, Disability and Health (ICF) promoted by the WHO, and the diffusion of family-centered models of healthcare have underscored the importance of the ecological perspective with a view to providing effective therapies and a satisfactory quality of life for dystonic children and their families. The advances made in this area have made it necessary to study and develope more appropriate treatment outcome measures. In the light of these aspects, there is still not enough literature on the generally-accepted, exhaustive dystonia assessment tools. Given these limits, it might be useful to discuss the strengths and weaknesses of the main tools currently used in this setting.
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Affiliation(s)
- Emanuela Pagliano
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy.
| | - Giovanni Baranello
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Riccardo Masson
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Maria Foscan
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Maria Teresa Arnoldi
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Alessia Marchi
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Giorgia Aprile
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
| | - Chiara Pantaleoni
- Developmental Neurology Unit, C. Besta Neurological Institute Foundation, Milan, Italy
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Russ JB, Nallappan AM, Robichaux-Viehoever A. Management of Pediatric Movement Disorders: Present and Future. Semin Pediatr Neurol 2018; 25:136-151. [PMID: 29735111 DOI: 10.1016/j.spen.2018.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Management of movement disorders in children is an evolving field. This article outlines the major categories of treatment options for pediatric movement disorders and general guidelines for their use. We review the evidence for existing therapies, which continue to lack large-scale controlled trials to guide treatment decisions. The field continues to rely on extrapolations from adult studies and lower quality evidence such as case reports and case series to guide treatment guidelines and consensus statements. Developments in new pharmaceuticals for rare diseases have begun to provide hope for those cases in which a genetic diagnosis can be made. Advances in surgical therapies such as deep brain stimulation as well as new modes of treatment such as gene therapy, epigenetic modulation, and stem cell therapy hold promise for improving outcomes in both primary and secondary causes of movement disorders. There is a critical need for larger, multicenter, controlled clinical trials to fully evaluate treatments for pediatric movement disorders.
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Affiliation(s)
- Jeffrey B Russ
- Department of Pediatrics, University of California San Francisco, San Francisco, CA
| | - Akila M Nallappan
- Undergraduate Program, Case Western Reserve University, Cleveland, OH
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Deep brain stimulation for dystonia: a novel perspective on the value of genetic testing. J Neural Transm (Vienna) 2017; 124:417-430. [PMID: 28160152 DOI: 10.1007/s00702-016-1656-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
Abstract
The dystonias are a group of disorders characterized by excessive muscle contractions leading to abnormal movements and postures. There are many different clinical manifestations and underlying causes. Deep brain stimulation (DBS) provides an effect treatment, but outcomes can vary considerably among the different subtypes of dystonia. Several variables are thought to contribute to this variation including age of onset and duration of dystonia, specific characteristics of the dystonic movements, location of stimulation and stimulator settings, and others. The potential contributions of genetic factors have received little attention. In this review, we summarize evidence that some of the variation in DBS outcomes for dystonia is due to genetic factors. The evidence suggests that more methodical genetic testing may provide useful information in the assessment of potential surgical candidates, and in advancing our understanding of the biological mechanisms that influence DBS outcomes.
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Hudson VE, Elniel A, Ughratdar I, Zebian B, Selway R, Lin JP. A comparative historical and demographic study of the neuromodulation management techniques of deep brain stimulation for dystonia and cochlear implantation for sensorineural deafness in children. Eur J Paediatr Neurol 2017; 21:122-135. [PMID: 27562095 DOI: 10.1016/j.ejpn.2016.07.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/15/2016] [Accepted: 07/20/2016] [Indexed: 12/19/2022]
Abstract
UNLABELLED Cochlear implants for sensorineural deafness in children is one of the most successful neuromodulation techniques known to relieve early chronic neurodisability, improving activity and participation. In 2012 there were 324,000 recipients of cochlear implants globally. AIM To compare cochlear implant (CI) neuromodulation with deep brain stimulation (DBS) for dystonia in childhood and explore relations between age and duration of symptoms at implantation and outcome. METHODS Comparison of published annual UK CI figures for 1985-2009 with a retrospective cohort of the first 9 years of DBS for dystonia in children at a single-site Functional Neurosurgery unit from 2006 to 14. RESULTS From 2006 to 14, DBS neuromodulation of childhood dystonia increased by a factor of 3.8 to a total of 126 cases over the first 9 years, similar to the growth in cochlear implants which increased by a factor of 4.1 over a similar period in the 1980s rising to 527 children in 2009. The CI saw a dramatic shift in practice from implantation at >5 years of age at the start of the programme towards earlier implantation by the mid-1990s. Best language results were seen for implantation <5 years of age and duration of cochlear neuromodulation >4 years, hence implantation <1 year of age, indicating that severely deaf, pre-lingual children could benefit from cochlear neuromodulation if implanted early. Similar to initial CI use, the majority of children receiving DBS for dystonia in the first 9 years were 5-15 years of age, when the proportion of life lived with dystonia exceeds 90% thus limiting benefits. CONCLUSION Early DBS neuromodulation for acquired motor disorders should be explored to maximise the benefits of dystonia reduction in a period of maximal developmental plasticity before the onset of disability. Learning from cochlear implantation, DBS can become an accepted management option in children under the age of 5 years who have a reduced proportion of life lived with dystonia, and not viewed as a last resort reserved for only the most severe cases where benefits may be at their most limited.
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Affiliation(s)
- V E Hudson
- Guys', King's and St Thomas' School of Medical Education, United Kingdom.
| | - A Elniel
- Guys', King's and St Thomas' School of Medical Education, United Kingdom
| | | | - B Zebian
- King's College Hospital, United Kingdom
| | - R Selway
- King's College Hospital, United Kingdom
| | - J P Lin
- Evelina London Children's Hospital, United Kingdom.
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Developing a Deep Brain Stimulation Neuromodulation Network for Parkinson Disease, Essential Tremor, and Dystonia: Report of a Quality Improvement Project. PLoS One 2016; 11:e0164154. [PMID: 27711133 PMCID: PMC5053513 DOI: 10.1371/journal.pone.0164154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/20/2016] [Indexed: 11/19/2022] Open
Abstract
Objective To develop a process to improve patient outcomes from deep brain stimulation (DBS) surgery for Parkinson disease (PD), essential tremor (ET), and dystonia. Methods We employed standard quality improvement methodology using the Plan-Do-Study-Act process to improve patient selection, surgical DBS lead implantation, postoperative programming, and ongoing assessment of patient outcomes. Results The result of this quality improvement process was the development of a neuromodulation network. The key aspect of this program is rigorous patient assessment of both motor and non-motor outcomes tracked longitudinally using a REDCap database. We describe how this information is used to identify problems and to initiate Plan-Do-Study-Act cycles to address them. Preliminary outcomes data is presented for the cohort of PD and ET patients who have received surgery since the creation of the neuromodulation network. Conclusions Careful outcomes tracking is essential to ensure quality in a complex therapeutic endeavor like DBS surgery for movement disorders. The REDCap database system is well suited to store outcomes data for the purpose of ongoing quality assurance monitoring.
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TODA H, SAIKI H, NISHIDA N, IWASAKI K. Update on Deep Brain Stimulation for Dyskinesia and Dystonia: A Literature Review. Neurol Med Chir (Tokyo) 2016; 56:236-48. [PMID: 27053331 PMCID: PMC4870178 DOI: 10.2176/nmc.ra.2016-0002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/01/2016] [Indexed: 12/11/2022] Open
Abstract
Deep brain stimulation (DBS) has been an established surgical treatment option for dyskinesia from Parkinson disease and for dystonia. The present article deals with the timing of surgical intervention, selecting an appropriate target, and minimizing adverse effects. We provide an overview of current evidences and issues for dyskinesia and dystonia as well as emerging DBS technology.
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Affiliation(s)
- Hiroki TODA
- Department of Neurosurgery, Tazuke Kofukai Medical Research Institute and Kitano Hospital, Kita, Osaka
| | - Hidemoto SAIKI
- Department of Neurology, Tazuke Kofukai Medical Research Institute and Kitano Hospital, Kita, Osaka
| | - Namiko NISHIDA
- Department of Neurosurgery, Tazuke Kofukai Medical Research Institute and Kitano Hospital, Kita, Osaka
| | - Koichi IWASAKI
- Department of Neurosurgery, Tazuke Kofukai Medical Research Institute and Kitano Hospital, Kita, Osaka
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Eligibility Criteria for Deep Brain Stimulation in Parkinson’s Disease, Tremor, and Dystonia. Can J Neurol Sci 2016; 43:462-71. [DOI: 10.1017/cjn.2016.35] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractIn this review, the available evidence to guide clinicians regarding eligibility for deep brain stimulation (DBS) in the main conditions in which these forms of therapy are generally indicated—Parkinson’s disease (PD), tremor, and dystonia—is presented. In general, the literature shows that DBS is effective for PD, essential tremor, and idiopathic dystonia. In these cases, key points in patient selection must include the level of disability and inability to manage symptoms using the best available medical therapy. Results are, however, still not optimal when dealing with other aetiologies, such as secondary tremors and symptomatic dystonia. Also, in PD, issues such as age and neuropsychiatric profile are still debatable parameters. Overall, currently available literature is able to guide physicians on basic aspects of patient selection and indications for DBS; however, a few points are still debatable and controversial. These issues should be refined and clarified in future studies.
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Abstract
IMPORTANCE Dystonia is a heterogeneous neurologic disorder characterized by abnormal muscle contractions for which standard medical therapy is often inadequate. For such patients, therapeutic brain stimulation is becoming increasingly used. OBJECTIVES To review the evidence and effect sizes for treating different types of dystonia with different types of brain stimulation and to discuss recent advances relevant to patient selection, surgical approach, programming, and mechanism of action. EVIDENCE REVIEW PubMed was searched for publications on the clinical effect of brain stimulation in dystonia up through December 31, 2014. Recent meta-analyses, consensus statements, and evidence-based guidelines were incorporated. Emphasis was placed on deep brain stimulation (DBS) and randomized clinical trials; however, other stimulation modalities and trial designs were included. For each intervention the mean change in dystonia severity, number of patients studied, and evidence of efficacy based on American Academy of Neurology criteria were determined. FINDINGS Strong (level B) evidence supports the use of DBS for the treatment of primary generalized or segmental dystonia, especially when due to mutation in the DYT1 gene, as well as for patients with cervical dystonia. Large effect sizes have also been reported for DBS treatment of tardive dystonia, writer's cramp, cranial dystonia, myoclonus dystonia, and off-state dystonia associated with Parkinson disease. Lesser benefit is generally seen in dystonia secondary to structural brain damage. Other brain stimulation techniques, including epidural cortical stimulation and noninvasive brain stimulation, have been investigated, but generally report smaller effect sizes in fewer patients. CONCLUSIONS AND RELEVANCE Patients with dystonia that is not adequately controlled with standard medical therapy should be referred for consideration of DBS, especially patients with generalized, segmental, or cervical dystonia. Other less-invasive stimulation modalities require further research before being considered a therapeutic alternative.
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Affiliation(s)
- Michael D Fox
- Berenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts2Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Ron L Alterman
- Division of Neurosurgery, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
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Meoni S, Zurowski M, Lozano AM, Hodaie M, Poon YY, Fallis M, Voon V, Moro E. Long-term neuropsychiatric outcomes after pallidal stimulation in primary and secondary dystonia. Neurology 2015; 85:433-40. [PMID: 26156506 DOI: 10.1212/wnl.0000000000001811] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 04/02/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate changes in the diagnosis of Axis I psychiatric disorders in patients with primary and secondary dystonia after deep brain stimulation (DBS) of the globus pallidus internus (GPi). METHODS Structured Clinical Interviews for the DSM-IV, Axis I psychiatric disorders, were prospectively performed before and after surgery. Diagnoses were made based on DSM-IV criteria. Psychiatric disorders were grouped into 5 categories: mood, anxiety, addiction, obsessive-compulsive disorders, and psychosis. Patients could be stratified to more than one category. Rates for unchanged diagnoses, diagnoses in remission, and new-onset diagnoses after surgery for each category were calculated. RESULTS Fifty-seven patients with primary and secondary dystonia were included. Mean ± SD age at surgery and dystonia duration at time of surgery was 50.6 ± 13.8 and 19.0 ± 13.2 years, respectively. Preoperatively, 37 Axis I diagnoses were made in 25 patients, 43.8% of those presenting with at least 1 Axis I diagnosis (mostly mood and anxiety disorders). Mean ± SD duration of psychiatric follow-up was 24.4 ± 19.6 months. Overall, after surgery no significant changes (p = 0.16) were found in Axis I diagnoses (23 patients, 40.3%): 27 (73%) unchanged, 10 (27%) in complete remission, and 4 (12.9%) new-onset diagnoses. CONCLUSIONS Our results support the overall psychiatric stability of patients with primary and secondary dystonia treated with GPi DBS. However, considering the high psychiatric morbidity in the dystonia population, psychiatric assessments before and after surgery are strongly recommended. CLASSIFICATION OF EVIDENCE This study provides Class IV evidence that GPi DBS does not change Axis I psychiatric diagnoses in patients with primary and secondary dystonia.
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Affiliation(s)
- Sara Meoni
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Mateusz Zurowski
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Andres M Lozano
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Mojgan Hodaie
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Yu-Yan Poon
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Melanie Fallis
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Valerie Voon
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK
| | - Elena Moro
- From the Division of Neurology (S.M., E.M.), CHU of Grenoble, Joseph Fourier University, France; the Movement Disorders Center (S.M., Y.-Y.P., M.F., E.M.), Department of Psychiatry (M.Z., V.V.), and Department of Neurosurgery (A.M.L., M.H.), Toronto Western Hospital, University of Toronto, Canada; the Division of Neurology (S.M.), A.O.U.C., University of Florence, Italy; and the Department of Psychiatry (V.V.), University of Cambridge, UK.
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Bertucco M, Sanger TD. Current and emerging strategies for treatment of childhood dystonia. J Hand Ther 2015; 28:185-93; quiz 194. [PMID: 25835254 PMCID: PMC4424089 DOI: 10.1016/j.jht.2014.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/29/2014] [Accepted: 11/04/2014] [Indexed: 02/03/2023]
Abstract
Childhood dystonia is a movement disorder characterized by involuntary sustained or intermittent muscle contractions causing twisting and repetitive movements, abnormal postures, or both (Sanger et al, 2003). Dystonia is a devastating neurological condition that prevents the acquisition of normal motor skills during critical periods of development in children. Moreover, it is particularly debilitating in children when dystonia affects the upper extremities such that learning and consolidation of common daily motor actions are impeded. Thus, the treatment and rehabilitation of dystonia is a challenge that continuously requires exploration of novel interventions. This review will initially describe the underlying neurophysiological mechanisms of the motor impairments found in childhood dystonia followed by the clinical measurement tools that are available to document the presence and severity of symptoms. Finally, we will discuss the state-of-the-art of therapeutic options for childhood dystonia, with particular emphasis on emergent and innovative strategies.
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Affiliation(s)
- Matteo Bertucco
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA
| | - Terence D Sanger
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA; Department of Child Neurology, University of Southern California, Los Angeles, CA, USA; Department of Biokinesiology, University of Southern California, Los Angeles, CA, USA; Children's Hospital of Los Angeles, Los Angeles, CA, USA.
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Anthofer JM, Steib K, Fellner C, Lange M, Brawanski A, Schlaier J. DTI-based deterministic fibre tracking of the medial forebrain bundle. Acta Neurochir (Wien) 2015; 157:469-77. [PMID: 25585836 DOI: 10.1007/s00701-014-2335-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 12/24/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND Deep brain stimulation (DBS) of the medial forebrain bundle (MFB) was reported to reduce symptoms in psychiatric disorders. The aim of our study was to find standardised parameters for diffusion tensor imaging (DTI) based fibre tracking to reliably visualise the MFB. METHODS Twenty-two cerebral hemispheres in 11 patients were investigated. Three different regions of interest (ROIs) were defined as seed regions for fibre tracking: the ipsilateral and contralateral superior cerebellar peduncle (SCP) and the nucleus raphe dorsalis (NRD). From each seed region the fibres were followed separately through the ventral tegmental area (VTA = second ROI) and their further courses and volumina were documented and compared. Minimal fibre length was set at 30 mm and the FA threshold at 0.12. RESULTS The fibre tracts starting in seed regions in the ipsilateral SCP and the NRD follow a similar course along the lateral wall of the third ventricle (hypothalamus) and the anterior limb of the internal capsule (ALIC) to inferior fronto-medial brain areas. These fibres are in accordance with the course of the MFB as described in various anatomical atlases. Consistently, a branch leaves the main fibre tract laterally to take a course through the capsula externa to the temporo-parietal cortex. Fibre tracts starting from the contralateral SCP follow a more superior and lateral course, including the dentato-rubro-thalamic and the pyramidal tract. CONCLUSIONS Deterministic fibre tracking with standardised ROIs provides constant and reproducible delineations of the medial forebrain bundle. Its visualisation might help to adjust targeting in DBS for psychiatric disorders.
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Affiliation(s)
- Judith Maria Anthofer
- Department of Neurosurgery, University Hospital of Regensburg, Franz-Josef-Strauss Allee 11, 93053, Regensburg, Germany,
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Abstract
OPINION STATEMENT Dystonia is a movement disorder caused by diverse etiologies. Its treatment in children is particularly challenging due to the complexity of the development of the nervous system from birth to young adulthood. The treatment options of childhood dystonia include several oral pharmaceutical agents, botulinum toxin injections, and deep brain stimulation (DBS) therapy. The choice of drug therapy relies on the suspected etiology of the dystonia and the adverse effect profile of the drugs. Dystonic syndromes with known etiologies may require specific interventions, but most dystonias are treated by trying serially a handful of medications starting with those with the best risk/benefit profile. In conjunction to drug therapy, botulinum toxin injections may be used to target a problematic group dystonic muscles. The maximal botulinum toxin dose is limited by the weight of the child, therefore limiting the number of the muscles amenable to such treatment. When drugs and botulinum toxin injections fail to control the child's disabling dystonia, DBS therapy may be offered as a last remedy. Delivering optimal DBS therapy to children with dystonia requires a multidisciplinary team of experienced pediatric neurosurgeons, neurologists, and nurses to select adequate candidates, perform this delicate stereotactic procedure, and optimize DBS delivery. Even in the best hands, the response of childhood dystonia to DBS therapy varies greatly. Future therapy of childhood dystonia will parallel the advancement of knowledge of the pathophysiology of dystonic syndromes and the development of clinical and research tools for their study.
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Affiliation(s)
- Samer D Tabbal
- Department of Neurology, American University of Beirut, Riad El-Solh, PO Box 11-0236, Beirut, 1107 2020, Lebanon,
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Tolleson C, Pallavaram S, Li C, Fang J, Phibbs F, Konrad P, Hedera P, Francois-D'Haese P, Dawant BM, Davis TL. The optimal pallidal target in deep brain stimulation for dystonia: a study using a functional atlas based on nonlinear image registration. Stereotact Funct Neurosurg 2014; 93:17-24. [PMID: 25502118 PMCID: PMC4348210 DOI: 10.1159/000368441] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 09/18/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND Deep brain stimulation (DBS) of the globus pallidus internus is established as efficacious for dystonia, yet the optimal target within this structure is not well defined. Published evidence suggests that spatial normalization provides a better estimate of DBS lead location than traditional methods based on standard stereotactic coordinates. METHODS We retrospectively reviewed our pallidal implanted dystonia population. Patient imaging scans were morphed into an MRI atlas using a nonlinear image registration algorithm. Active contact locations were projected onto the atlas and clusters analyzed for the degree of variance in two groups: (1) good and poor responders and (2) cervical (CD) and generalized dystonia (GD). RESULTS The average active contact location between CD and GD good responders was distinct but not significantly different. The mean active contact for CD poor responders was significantly different from CD responders and GD poor responders in the dorsoventral direction. CONCLUSIONS A normalized imaging space is arguably more accurate in visualizing postoperative leads. Despite some separation between groups, this data suggests there was not an optimal pallidal target for common dystonia patients. Degrees of variance overlapped due to a large degree of individual target variation. Patient selection may ultimately be the key to maximizing patient outcomes.
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Affiliation(s)
| | | | - Chen Li
- Study conducted at Vanderbilt University
| | - John Fang
- Study conducted at Vanderbilt University
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Schrock LE, Mink JW, Woods DW, Porta M, Servello D, Visser-Vandewalle V, Silburn PA, Foltynie T, Walker HC, Shahed-Jimenez J, Savica R, Klassen BT, Machado AG, Foote KD, Zhang JG, Hu W, Ackermans L, Temel Y, Mari Z, Changizi BK, Lozano A, Auyeung M, Kaido T, Agid Y, Welter ML, Khandhar SM, Mogilner AY, Pourfar MH, Walter BL, Juncos JL, Gross RE, Kuhn J, Leckman JF, Neimat JA, Okun MS. Tourette syndrome deep brain stimulation: a review and updated recommendations. Mov Disord 2014; 30:448-71. [PMID: 25476818 DOI: 10.1002/mds.26094] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 10/06/2014] [Accepted: 10/08/2014] [Indexed: 12/16/2022] Open
Abstract
Deep brain stimulation (DBS) may improve disabling tics in severely affected medication and behaviorally resistant Tourette syndrome (TS). Here we review all reported cases of TS DBS and provide updated recommendations for selection, assessment, and management of potential TS DBS cases based on the literature and implantation experience. Candidates should have a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM V) diagnosis of TS with severe motor and vocal tics, which despite exhaustive medical and behavioral treatment trials result in significant impairment. Deep brain stimulation should be offered to patients only by experienced DBS centers after evaluation by a multidisciplinary team. Rigorous preoperative and postoperative outcome measures of tics and associated comorbidities should be used. Tics and comorbid neuropsychiatric conditions should be optimally treated per current expert standards, and tics should be the major cause of disability. Psychogenic tics, embellishment, and malingering should be recognized and addressed. We have removed the previously suggested 25-year-old age limit, with the specification that a multidisciplinary team approach for screening is employed. A local ethics committee or institutional review board should be consulted for consideration of cases involving persons younger than 18 years of age, as well as in cases with urgent indications. Tourette syndrome patients represent a unique and complex population, and studies reveal a higher risk for post-DBS complications. Successes and failures have been reported for multiple brain targets; however, the optimal surgical approach remains unknown. Tourette syndrome DBS, though still evolving, is a promising approach for a subset of medication refractory and severely affected patients.
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Affiliation(s)
- Lauren E Schrock
- Department of Neurology, University of Utah, Salt Lake City, Utah, USA
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Bhanpuri NH, Bertucco M, Ferman D, Young SJ, Liker MA, Krieger MD, Sanger TD. Deep Brain Stimulation Evoked Potentials May Relate to Clinical Benefit in Childhood Dystonia. Brain Stimul 2014; 7:718-26. [DOI: 10.1016/j.brs.2014.06.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 05/28/2014] [Accepted: 06/06/2014] [Indexed: 11/16/2022] Open
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Anthofer J, Steib K, Fellner C, Lange M, Brawanski A, Schlaier J. The variability of atlas-based targets in relation to surrounding major fibre tracts in thalamic deep brain stimulation. Acta Neurochir (Wien) 2014; 156:1497-504; discussion 1504. [PMID: 24829155 DOI: 10.1007/s00701-014-2103-z] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/16/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND In essential tremor (ET), the main target for deep brain stimulation (DBS) is the thalamic ventralis intermedius nucleus (Vim). This target cannot be identified on conventional magnetic resonance imaging (MRI). Therefore, targeting depends on probabilistic coordinates derived from stereotactic atlases. The goal of our study was to investigate the variability of atlas-based Vim targets in relation to surrounding major fibre tracts. METHODS With the MRI and computed tomography (CT) scan data of ten patients who underwent DBS, we planned atlas based Vim targets in both hemispheres. We also performed deterministic fibre-tracking with diffusion tensor imaging (DTI) of the dentato-rubro-thalamic tract (DRTT), pyramidal tract (PT) and lemniscus medialis (LM) in all 20 hemispheres. Subsequently, we measured the distance from the atlas-based Vim target to each tract along the medial/lateral (x-coordinate), anterior/posterior (y-coordinate) and superior/inferior axis (z-coordinate). RESULTS Seventeen out of 20 DRTTs could be depicted with our standardised DTI/fibre-tracking parameters. The PT and the LM could be displayed in all 20 hemispheres. The atlas-based Vim target was found inside the DRTT in 11 (concerning the x-coordinate) and 10 hemispheres (concerning the z-coordinate). Regarding the anterior/posterior direction, the target was posterior to the DRTT in 11 cases. In 19 hemispheres the Vim target was located medial and superior to the PT and in 17 hemispheres posterior to it. Concerning the LM, the Vim target was found inside the LM in 16 (regarding the x-coordinate) and in 14 cases (regarding the z-coordinate). In eight cases it was located inside and in 12 cases anterior to the LM concerning the y-coordinate. CONCLUSIONS We found a considerable variability of the location of atlas-based target points of the ventralis intermedius nucleus in relation to neighbouring major fibre tracts in individual patients. These results suggest that individualised targeting to structures not directly visible on conventional MRI is necessary.
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Abstract
The next several decades will see an exponential rise in the number of patients with disorders of memory and cognition, and of Alzheimer's disease in particular. Impending demographic shifts, an absence of effective treatments, and the significant burden these conditions place on patients, caregivers, and society, mean there is an urgent need to develop novel therapies. Deep brain stimulation (DBS) is a neurosurgical procedure that is a standard-of-care for many patients with treatment-refractory Parkinson's disease, dystonia, and essential tremor. DBS has proven to be an effective means of modulating activity in disrupted motor circuitry, and has shown promise as a modulator of other dysfunctional circuits, including for mood and anxiety disorders. The deficits in Alzheimer's disease and other disorders of memory and cognition are also beginning to be thought of as arising from dysfunction in neural circuits. Such dysfunction may be amenable to modulation using focal brain stimulation. A global experience is now emerging for the use of DBS for these conditions, targeting key nodes in the memory circuit, including the fornix and nucleus basalis of Meynert. Such work holds promise as a novel therapeutic approach for one of medicine's most urgent priorities.
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Affiliation(s)
- Tejas Sankar
- />Division of Neurosurgery, Walter C. MacKenzie Health Sciences Centre, University of Alberta, 8440-112 Street, Edmonton, Alberta T6G 2B7 Canada
| | - Nir Lipsman
- />Division of Neurosurgery, Toronto Western Hospital, 399 Bathurst St. WW 4-447, Toronto, Ontario M5T 2S8 Canada
| | - Andres M. Lozano
- />Division of Neurosurgery, Toronto Western Hospital, 399 Bathurst St. WW 4-447, Toronto, Ontario M5T 2S8 Canada
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Moro E, Gross RE, Krauss JK. What's new in surgical treatment for dystonia? Mov Disord 2014; 28:1013-20. [PMID: 23893457 DOI: 10.1002/mds.25550] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 05/01/2013] [Accepted: 05/09/2013] [Indexed: 12/30/2022] Open
Abstract
It is now established that pallidal deep brain stimulation (DBS) is effective in the treatment of generalized and segmental primary dystonia, although there is still insufficient evidence to support its benefit in focal and secondary dystonia. Because several studies have demonstrated that pallidal DBS improves quality of life (QoL), reduced QoL and disability that are nonresponsive to medical treatment are probably the main factors guiding the decision to consider surgery. Some studies have indicated that young patients with primary dystonia who have shorter disease duration and less severe dystonia are likely to have the best outcome from DBS. Therefore, surgery should not be delayed when disability and QoL are impaired to the extent that justifies the surgical risk. A case-by-case approach is recommended in patients who have secondary dystonia. The globus pallidus internus is considered the best target for dystonia. There are still not enough data about the effectiveness of thalamic, subthalamic nucleus, and premotor cortex stimulation. Targeting with multiple electrodes and intra-individual comparisons of outcomes may help determine which target would be more beneficial. With regard to the role of lesions, pallidotomy for dystonia is still performed in several countries and can play a role in selected patients. New technologies are already available to improve the stimulation programming for DBS patients and to increase battery longevity. In the near future, it is possible that we will be able to shape stimulation settings according to disease type and symptoms. © 2013 Movement Disorder Society.
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Affiliation(s)
- Elena Moro
- Movement Disorders Unit, Department of Psychiatry and Neurology, CHU de Grenoble, Joseph Fourier University, Grenoble, France.
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A 5-year follow-up of deep brain stimulation in Huntington's disease. Parkinsonism Relat Disord 2014; 20:260-1. [DOI: 10.1016/j.parkreldis.2013.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2013] [Revised: 10/20/2013] [Accepted: 11/07/2013] [Indexed: 11/22/2022]
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Hu W, Stead M. Deep brain stimulation for dystonia. Transl Neurodegener 2014; 3:2. [PMID: 24444300 PMCID: PMC3902434 DOI: 10.1186/2047-9158-3-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 01/19/2014] [Indexed: 12/27/2022] Open
Abstract
Deep brain stimulation (DBS) is an effective surgical treatment for medication-refractory movement disorders, and has been approved by the United States Food and Drug Administration for treatment of dystonia. The success of DBS in the treatment of dystonia depends on our understanding of the anatomy and physiology of this disorder and close collaboration between neurosurgeons, neurologists, clinical neurophysiologists, neuroradiologists and neuropsychologists. Currently, pallidal DBS is an established treatment option for medically refractive dystonia. This review is intended to provide a comprehensive review of the use of DBS for dystonia, focusing mainly on the surgical aspects, clinical outcome, MRI findings and side effects of DBS.
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Affiliation(s)
- Wei Hu
- Department of Neurology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55901, USA.
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Abstract
The authors report on 2 cases of pediatric generalized dystonia with a DYT1 mutation; the patients, an 11-year-old girl and a 9-year-old boy, underwent chronic, pallidal deep brain stimulation (DBS) of the globus pallidus internus (GPi). The dystonic postures in both cases showed dramatic improvements with pallidal DBS, but each patient's symptoms gradually recurred within a year, irrespective of exhaustive readjustments of the stimulation settings. After the recurrence of the dystonic symptoms, the DBS leads were replaced within the GPi in one patient (Case 1) and additional DBS leads were implanted into the bilateral subthalamic nuclei in the other patient (Case 2). Neither measure produced any further clinical benefit, and the patient in Case 2 died of status dystonicus 2 days after reoperation. These findings suggest that early pallidal DBS for pediatric dystonia is indeed effective, although there are some cases in which its therapeutic effect is lost. One possible reason may be the ability of the preadolescent brain to tolerate chronic electrical stimuli during the active maturation process.
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Affiliation(s)
- Yasushi Miyagi
- Department of Stereotactic and Functional Neurosurgery, Kaizuka Hospital
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Abstract
The few controlled studies that have been carried out have shown that bilateral internal globus pallidum stimulation is a safe and long-term effective treatment for hyperkinetic disorders. However, most recent published data on deep brain stimulation (DBS) for dystonia, applied to different targets and patients, are still mainly from uncontrolled case reports (especially for secondary dystonia). This precludes clear determination of the efficacy of this procedure and the choice of the 'good' target for the 'good' patient. We performed a literature analysis on DBS for dystonia according to the expected outcome. We separated those with good evidence of favourable outcome from those with less predictable outcome. In the former group, we review the main results for primary dystonia (generalised/focal) and highlight recent data on myoclonus-dystonia and tardive dystonia (as they share, with primary dystonia, a marked beneficial effect from pallidal stimulation with good risk/benefit ratio). In the latter group, poor or variable results have been obtained for secondary dystonia (with a focus on heredodegenerative and metabolic disorders). From this overview, the main results and limits for each subgroup of patients that may help in the selection of dystonic patients who will benefit from DBS are discussed.
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Affiliation(s)
- Marie Vidailhet
- AP-HP, Department of Neurology, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.
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Marks W, Bailey L, Reed M, Pomykal A, Mercer M, Macomber D, Acosta F, Honeycutt J. Pallidal stimulation in children: comparison between cerebral palsy and DYT1 dystonia. J Child Neurol 2013; 28:840-8. [PMID: 23666041 DOI: 10.1177/0883073813488674] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The authors compared the outcomes of 17 children aged 7 to 15 years with DYT1 dystonia or cerebral palsy following deep brain stimulation. While patients with cerebral palsy presented with significantly greater motor disability than the DYT1 cohort at baseline, both groups demonstrated improvement at 1 year (cerebral palsy = 24%; DYT1 = 6%). The group as a whole demonstrated significant improvement on the Barry-Albright Dystonia Scale across time. Gains in motor function were apparent in both axial and appendicular distributions involving both upper and lower extremities. Gains achieved by 6 months were sustained in the cerebral palsy group, whereas the DYT1 group demonstrated continued improvement with ongoing pallidal stimulation beyond 18 months. Young patients with dystonia due to cerebral palsy responded comparably to patients with DYT1 dystonia. The severity of motor impairment in patients with cerebral palsy at baseline and follow-up raises the issue of even earlier intervention with neuromodulation in this population to limit long-term motor impairments due to dystonia.
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Affiliation(s)
- Warren Marks
- Department of Neurology, Cook Children's Medical Center, Fort Worth, TX 76104, USA.
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Walsh RA, Sidiropoulos C, Lozano AM, Hodaie M, Poon YY, Fallis M, Moro E. Bilateral pallidal stimulation in cervical dystonia: blinded evidence of benefit beyond 5 years. Brain 2013; 136:761-9. [DOI: 10.1093/brain/awt009] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Vidailhet M, Jutras MF, Roze E, Grabli D. Deep brain stimulation for dystonia. HANDBOOK OF CLINICAL NEUROLOGY 2013; 116:167-187. [PMID: 24112893 DOI: 10.1016/b978-0-444-53497-2.00014-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The few reported controlled studies show that bilateral stimulation of the globus pallidus interna (GPi) is a safe and effective long-term treatment for hyperkinetic disorders. However, the recently published data on deep brain stimulation (DBS) applied to different targets or patients (especially those with secondary dystonia) are mainly uncontrolled case reports, precluding a clear determination of its efficacy, and providing little guidance as to the choice of a "good" target in a "good" patient. This chapter reviews the literature on DBS in primary dystonia, paying particular attention to the risk:benefit ratio in focal and segmental dystonias (cervical dystonia, cranial dystonia) and to the predictive factors for a good outcome. The chapter also highlights recent data on the marked benefits of the technique in myoclonus dystonia (in which pallidal, as opposed to thalamic, stimulation is more effective) and in tardive dystonia-dyskinesia. Although, the decision to treat appears relatively straightforward in patients with primary dystonia, myoclonus-dystonia, and tardive dystonia who have a normal findings on magnetic resonance imaging and normal cognitive function, there are still no reliable tools to help predict the timescale of postoperative benefit. This chapter provides a comprehensive analysis of the use of the treatment in various types of secondary dystonia, with little to moderate benefit in most cases, based on single cases or small series. Beyond the reduction in the severity of dystonia, the global motor and functional outcome is difficult to determine owing to the paucity of adequate evaluation tools. Because of the large interpatient variability, different targets may be effective depending on the symptoms in each individual.
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Affiliation(s)
- Marie Vidailhet
- Department of Neurology, Groupe Hospitalier Pitié-Salpêtrière, Paris, France; Research Center of the Brain and Spinal Cord Institute, Université Paris 6/Inserm UMR S975, Paris, France; Pierre et Marie Curie Paris-6 University, Paris, France
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Tierney TS, Lozano AM. Surgical treatment for secondary dystonia. Mov Disord 2012; 27:1598-605. [PMID: 23037556 DOI: 10.1002/mds.25204] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 08/15/2012] [Accepted: 08/22/2012] [Indexed: 12/16/2022] Open
Abstract
Surgical therapy for the secondary dystonias is generally perceived to be less effective than for primary disease. However, a number of case reports and small open series have recently appeared describing quite favorable outcomes following surgery for some nonprimary dystonias. We discuss surgical treatment options for this group of diverse conditions, including tardive dystonia, dystonic cerebral palsy, and certain heredodegenerative diseases in which deep brain stimulation and ablative lesions of the posteroventral pallidum have been shown to be effective. Other types of secondary dystonia respond less well to pallidal surgery, particularly when anatomical lesions of the basal ganglia are prominent on preoperative imaging. For these conditions, central baclofen delivery and botulinum toxin denervation may be considered. With optimal medical and surgical care, some patients with secondary dystonia have achieved reductions in disability and pain that approach those documented for primary dystonia.
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Affiliation(s)
- Travis S Tierney
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
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