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Related Experiment Video

Updated: Mar 23, 2026

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Tissue Response to Deep Brain Stimulation and Microlesion: A Comparative Study.

Vinata Vedam-Mai1,2, Massoud Baradaran-Shoraka1, Brent A Reynolds1

  • 1Department of Neurosurgery, McKnight Brain Institute, University of FL, Gainesville, FL, USA.

Neuromodulation : Journal of the International Neuromodulation Society
|March 29, 2016
PubMed
Summary

Deep brain stimulation (DBS) reduces activated microglia and promotes neural progenitor cell proliferation in rats. This suggests DBS may influence cellular plasticity and neuroinflammation in movement disorders like Parkinson's disease.

Keywords:
Deep brain stimulationParkinson's diseasemicroglianeural precursor cellplasticity

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Area of Science:

  • Neuroscience
  • Cellular Biology
  • Neuroinflammation

Background:

  • Deep brain stimulation (DBS) is a therapeutic modality for movement disorders.
  • Previous observations suggested DBS influences cellular plasticity beyond the stimulation site.
  • The interplay between DBS, neural progenitor cells, and microglia remains to be fully elucidated.

Purpose of the Study:

  • To investigate the relationship between DBS, neural progenitor cells, and microglia.
  • To determine if DBS affects cellular plasticity and neuroinflammatory markers.
  • To support previous findings on DBS-induced progenitor cell proliferation.

Main Methods:

  • Naïve rats underwent DBS electrode implantation and stimulation.
  • Immunohistochemistry was used to label microglial and progenitor cells.
  • Fluorescence microscopy enabled cell quantification.

Main Results:

  • Acute high-frequency stimulation demonstrated a reciprocal relationship between microglia and neural precursor cells.
  • Stimulated animals showed significantly lower numbers of activated microglia compared to controls (p=0.026).
  • The subthalamic region near the DBS electrode exhibited a significant increase in neural precursor cells expressing cell cycle and plasticity markers (Ki67, MCM2).

Conclusions:

  • Acute DBS in this model promotes modest local progenitor cell proliferation.
  • DBS influenced the total number of activated microglia.
  • Findings suggest potential clinical significance for Parkinson's disease, which involves neuroinflammation.