Striatal dopaminergic metabolism is increased by deep brain stimulation of the subthalamic nucleus in 6-hydroxydopamine lesioned rats

Research output: Contribution to journalArticle

Abstract

Deep brain stimulation of the subthalamic nucleus is an established therapeutic strategy for patients with Parkinson's disease. Although the exact mechanisms of action remain unknown, it is noteworthy that dopaminergic medication can be markedly reduced after neurostimulation of the subthalamic nucleus. Previously, we have shown that deep brain stimulation of the subthalamic nucleus is followed by an increase of striatal extracellular dopamine metabolites in naive rats. In the present study we examined the effects of deep brain stimulation on striatal monoamine metabolism in the intrastriatal 6-hydroxydopamine rat model of Parkinson's disease. Deep brain stimulation of the subthalamic nucleus was followed by a delayed increase of extracellular 3,4-dihydroxyphenylacetic and homovanillic whereas dopamine levels were unchanged in stimulated rats and controls. Our results indicate that deep brain stimulation of the subthalamic nucleus affects significantly striatal dopaminergic metabolism in 6-hydroxydopamine lesioned rats.

Details

Authors
  • Wlodzimierz Meissner
  • Torsten Reum
  • G Paul
  • Daniel Harnack
  • Reinhard Sohr
  • R Morgenstern
  • A Kupsch
External organisations
  • Humboldt University of Berlin
Research areas and keywords

Keywords

  • 3,4-Dihydroxyphenylacetic Acid, Animals, Dopamine, Electric Stimulation Therapy, Extracellular Space, Homovanillic Acid, Male, Microdialysis, Neostriatum, Oxidopamine, Parkinsonian Disorders, Rats, Rats, Wistar, Subthalamic Nucleus, Sympatholytics, Journal Article, Research Support, Non-U.S. Gov't
Original languageEnglish
Pages (from-to)165-8
Number of pages4
JournalNeuroscience Letters
Volume303
Issue number3
Publication statusPublished - 2001 May 11
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes