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Resting-State Functional Connectivity Predicts STN DBS Clinical Response.

John R Younce1, Meghan C Campbell1,2, Tamara Hershey2,3

  • 1Department of Neurology, Washington University in St. Louis, St. Louis, Missouri, USA.

Movement Disorders : Official Journal of the Movement Disorder Society
|November 19, 2020
PubMed
Summary
This summary is machine-generated.

Preoperative functional connectivity in the brain predicts how well deep brain stimulation (DBS) works for Parkinson's disease. Stronger connectivity between the pallidum and subthalamic nucleus means better motor improvement from DBS.

Keywords:
DBSParkinson's diseasefunctional connectivity

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Area of Science:

  • Neuroscience
  • Medical Imaging
  • Neurosurgery

Background:

  • Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is a key treatment for Parkinson's disease motor symptoms.
  • However, predicting patient response to STN DBS remains challenging.
  • New methods are needed to improve surgical outcomes and understand disease mechanisms.

Purpose of the Study:

  • To investigate if preoperative resting-state functional connectivity MRI can predict motor response to STN DBS.
  • To identify specific brain network features that correlate with treatment efficacy.

Main Methods:

  • Collected resting-state functional MRI data from 70 participants undergoing STN DBS.
  • Analyzed STN functional connectivity using seeds derived from PET imaging in a subset of participants.
  • Correlated connectivity strength with postoperative motor outcomes using linear regression.

Main Results:

  • Preoperative functional connectivity between the left STN and ipsilateral internal globus pallidus significantly correlated with motor outcomes (r = -0.39, P = 0.0007).
  • Stronger connectivity predicted greater motor improvement after surgery.
  • Left pallidal-STN connectivity was a significant predictor of DBS motor response.

Conclusions:

  • Preoperative pallidal-STN resting-state functional connectivity is a potential predictor of motor benefit from STN DBS.
  • The integrity of pallidal-STN circuits may be crucial for the therapeutic effects of DBS.
  • Prospective validation is recommended before clinical implementation.