Abstract
Recently, therapeutic attempts to control motor choreatic hyperkinesia of Huntington's disease (HD) by means of pallidal deep brain stimulation (Gp-DBS) were successful. With respect to the clinical effects of Gp-DBS in juvenile hypokinetic-rigid HD (jHD; Westphal variant), only one single-case has been reported up to date. Oscillatory patterns of the Gp in jHD are not known. This work aimed to analyse pallidal local field potential oscillations (LFP) in two patients with jHD treated with Gp-DBS. Safety data and clinical scores up to 12months after DBS-electrode implantation were collected in the framework of a prospective trial (ClinicalTrials.gov; NCT00902889). Intraoperative LFP revealed local alpha and beta oscillations similar to those found in other movement disorders with akinetic rigid and dystonic presentation. Significant motor improvement was not found. There were no treatment-related complications or unresolved long-term adverse events. In spite of similar intraoperative LFP patterns of jHD with those of movement disorders benefitting from DBS, clinical results were not convincing in our patients, so that Gp-DBS in jHD cannot be generally recommended.
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