Related Experiment Videos
[Variance in effects of subthalamic nucleus stimulation]
Ryoichi Okiyama1, Fusako Yokochi, Makoto Taniguchi
1Department of Neurology, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, Fuchu-shi, Tokyo 183-0042, Japan.
No to Shinkei = Brain and Nerve
|December 13, 2002
Summary
Subthalamic nucleus (STN) stimulation improves Parkinson's symptoms and levodopa-induced dyskinesia. The timing and location of STN stimulation impact the latency and effectiveness of dyskinesia improvement, showing variable patient responses.
Area of Science:
- Neurology
- Neurosurgery
- Movement Disorders
Context:
- Subthalamic nucleus (STN) deep brain stimulation (DBS) is a recognized treatment for advanced Parkinson's disease (PD).
- STN DBS is primarily used to manage motor fluctuations and levodopa-induced dyskinesia (LID).
- The precise mechanisms and timing of LID improvement following STN DBS remain incompletely understood.
Purpose:
- To assess the variance in latency for LID improvement after STN DBS.
- To investigate the relationship between STN stimulation parameters and the improvement of parkinsonian symptoms and motor complications.
- To clarify whether STN DBS directly ameliorates LID or indirectly through medication reduction.
Summary:
- Seven patients with advanced PD, motor fluctuations, and LID underwent STN DBS. Motor fluctuations and dyskinesia improved in all patients at six months post-surgery.
- LID improvement onset varied: immediate in three patients, delayed in others, with some initially worsening.
- Longer latency for LID improvement correlated with better overall parkinsonian symptom control and potentially more central stimulation sites.
Impact:
- STN DBS offers significant benefits for motor symptoms and LID in advanced PD.
- The timing of LID response to STN DBS is variable and influenced by stimulation parameters.
- Findings suggest that the stimulation location within the STN may influence the therapeutic effect on dyskinesia and parkinsonian symptoms.