Abstract
Background: Dyskinesias that occur during a period without medication after embryonic cell transplantation have been commonly reported in double-blind trials; however, to date, they have not been reported in the few patients who participated in open-label pilot studies. Design: Single case observation with preoperative and postoperative data, and intraoperative single-cell physiology. Patient: A patient who underwent embryonic cell transplantation in 1993 as part of the University of South Florida open-label study was referred for evaluation of intractable dyskinesia of the right arm. The dyskinesia was present during evaluation of the patient after a 12-hour period without medication and was clinically disabling. It was manifested as a severe groping movement of the hand. Intraoperative physiologic evaluation revealed decreased firing rates in the internal segment of the globus pallidus. Results: Deep brain stimulation of the internal segment of the globus pallidus resulted in resolution of the dyskinesia. Conclusion: This case highlights the delayed development of runaway dyskinesia after a period without medication as an important potential long-term adverse effect of embryonic cell transplantation in patients with Parkinson disease.
Original language | English (US) |
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Pages (from-to) | 1181-1184 |
Number of pages | 4 |
Journal | Archives of neurology |
Volume | 63 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2006 |
ASJC Scopus subject areas
- Arts and Humanities (miscellaneous)
- Clinical Neurology