The influence of pallidal deep brain stimulation on striatal dopaminergic metabolism in the rat

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Deep brain stimulation of the globus pallidus internus has been recently shown to alleviate parkinsonian symptoms and levodopa-induced dyskinesias. However, its exact mechanisms of action are unclear. Pallidal neurones are connected via various pathways to the dopaminergic nigrostriatal system. In the present study we investigated the hypothesis that deep brain stimulation of the entopeduncular nucleus (corresponds to the human internal pallidum) affects striatal dopaminergic metabolism in naive and 6-hydroxydopamine (6-OHDA) lesioned rats using microdialysis. Our results show that stimulation of the entopeduncular nucleus does not significantly affect striatal dopamine metabolism (of dopamine, 3, 4-dihdroxyphenylacetic acid and homovanillic acid) in naive and 6-OHDA-lesioned animals. They contrast with our previous observations that deep brain stimulation of the subthalamic nucleus increases striatal dopamine metabolism suggesting differential effects of these nuclei on striatal dopamine metabolism.

Detaljer

Författare
  • Wlodzimierz Meissner
  • G Paul
  • Torsten Reum
  • D. R. Reese
  • Reinhard Sohr
  • R Morgenstern
  • A Kupsch
Externa organisationer
  • Humboldt University of Berlin
Forskningsområden

Nyckelord

Originalspråkengelska
Sidor (från-till)149-52
Antal sidor4
TidskriftNeuroscience Letters
Volym296
Utgåva nummer2-3
StatusPublished - 2000 dec 22
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa