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Analysis of Gene Expression Changes in the Rat Hippocampus After Deep Brain Stimulation of the Anterior Thalamic Nucleus
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Published on: March 8, 2015

Deep brain stimulation for dystonia: a meta-analysis.

Kathryn L Holloway1, Mark S Baron, Rashelle Brown

  • 1The South-eastern Parkinson's Disease Research, Education and Clinical Care (PADRECC) Center of Excellence at McGuire VAMC, and the Departments of Neurosurgery, Neurology, Psychology, Physical Medicine and Rehabilitation, and Biostatistics at the Medical College of Virginia Hospital of Virginia Commonwealth University, Richmond, VA, USA.

Neuromodulation : Journal of the International Neuromodulation Society
|December 14, 2011
PubMed
Summary

Deep brain stimulation (DBS) of the globus pallidus internus (GPi) significantly improves dystonia outcomes. Factors like etiology and symptom duration also influence results, with GPi stimulation showing superior efficacy.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Movement Disorders

Background:

  • Dystonia is a complex movement disorder impacting quality of life.
  • Deep brain stimulation (DBS) is a therapeutic option for refractory dystonia.
  • Identifying factors influencing DBS outcomes is crucial for patient selection and management.

Purpose of the Study:

  • To conduct a meta-analysis of reported deep brain stimulation (DBS) cases for dystonia.
  • To determine factors significantly influencing treatment outcomes.
  • To use the Burke-Fahn-Marsden (BFM) movement scale as the primary outcome measure.

Main Methods:

  • MEDLINE search identifying 137 patients from 24 studies with individual BFM scores.
  • Statistical analysis of individual patient data including demographics, dystonia characteristics, surgical details, and stimulation parameters.
  • Regression modeling to identify significant predictors of outcome.

Main Results:

  • Mean BFM improvement was 51.8%.
  • Globus pallidus internus (GPi) stimulation yielded significantly better outcomes than thalamic (VLp) stimulation (p=0.0001).
  • Dystonia etiology and longer symptom duration negatively impacted outcomes, while specific genetic factors (DYT1, PKAN) did not show significant outcome differences.

Conclusions:

  • Deep brain stimulation (DBS) of the globus pallidus internus (GPi) is effective for various dystonic conditions.
  • Stimulation site, dystonia etiology, and symptom duration are key predictors of DBS success.
  • Further research may refine patient selection and optimize DBS strategies for dystonia.