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Published on: May 31, 2016
Hypomobility after DOI administration can be reversed by subthalamic nucleus deep brain stimulation
Rob Hameleers1, Arjan Blokland, Harry W M Steinbusch
1Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
Behavioural Brain Research
|August 31, 2007
Summary
Deep brain stimulation of the subthalamic nucleus (STN DBS) reversed drug-induced hypomobility in rats. This suggests serotonin pathways may mediate the therapeutic effects of STN DBS.
Area of Science:
- Neuroscience
- Pharmacology
- Movement Disorders
Background:
- Serotonergic neurotransmission significantly impacts motor control.
- The subthalamic nucleus (STN) is crucial for regulating locomotor activity.
- 5-HT(2A/C) receptor agonists, like DOI, can alter mobility.
Purpose of the Study:
- To investigate if STN deep brain stimulation (DBS) can counteract DOI-induced hypomobility.
- To explore the role of serotonergic mechanisms in STN DBS efficacy.
Main Methods:
- Rats underwent STN electrode implantation for DBS.
- Locomotor activity was assessed in an open field task.
- Animals were treated with DOI (i.p.) and/or STN high-frequency stimulation (HFS).
Main Results:
- DOI administration significantly reduced rat behavioral activity.
- STN HFS effectively reversed the hypomobility induced by DOI.
- This indicates a modulation of DOI effects by STN stimulation.
Conclusions:
- STN DBS can reverse 5-HT-mediated hypomobility.
- The findings suggest a novel 5-HT-dependent mechanism underlying STN DBS therapeutic effects.
- This opens new avenues for understanding movement disorders and their treatment.
