Refining the Deep Brain Stimulation Target within the Limbic Globus Pallidus Internus for Tourette Syndrome

被引:32
作者
Akbarian-Tefaghi, Ladan [1 ]
Akram, Harith [1 ]
Johansson, Johannes [2 ]
Zrinzo, Ludvic [1 ]
Kefalopoulou, Zinovia [1 ]
Limousin, Patricia [1 ]
Joyce, Eileen [1 ]
Hariz, Marwan [1 ]
Wardell, Karin [2 ]
Foltynie, Tom [1 ]
机构
[1] UCL Inst Neurol, Sobell Dept Motor Neurosci, Unit Funct Neurosurg, London, England
[2] Linkoping Univ, Dept Biomed Engn, Linkoping, Sweden
基金
瑞典研究理事会;
关键词
Deep brain stimulation; Tourette syndrome; Globus pallidus internus; Simulation; Modelling; ROBUST; SCALE; OPTIMIZATION; REGISTRATION; INTERFACE; IMPEDANCE; ELEMENT;
D O I
10.1159/000478273
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Background: Deep brain stimulation (DBS) in patients with severe, refractory Tourette syndrome (TS) has demonstrated promising but variable results thus far. The thalamus and anteromedial globus pallidus internus (amGPi) have been the most commonly stimulated sites within the cortico-striato thalamic circuit, but an optimal target is yet to be elucidated. Objectives: This study of 15 patients with long-term amGPi DBS for severe TS investigated whether a specific anatomical site within the amGPi correlated with optimal clinical outcome for the measures of tics, obsessive compulsive behaviour (OCB), and mood. Methods: Validated clinical assessments were used to measure tics, OCB, quality of life, anxiety, and depression before DBS and at the latest follow-up (1782 months). Electric field simulations were created for each patient using information on electrode location and individual stimulation parameters. A subsequent regression analysis correlated these patient-specific simulations to percentage changes in outcome measures in order to identify any significant voxels related to clinical improvement. Results: A region within the ventral limbic GPi, specifically on the me-dial medullary lamina in the pallidum at the level of the ACPC, was significantly associated with improved tics but not mood or OCB outcome. Conclusions: This study adds further support to the application of DBS in a tic-related network, though factors such as patient sample size and clinical heterogeneity remain as limitations and replication is required. (C) 2017 S. Karger AG, Basel
引用
收藏
页码:251 / 258
页数:8
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