Scientific publications

Continuous dopamine-receptor stimulation in advanced Parkinson's disease

Nutt JG, Obeso JA, Stocchi F.
Dept of Neurology, Oregon Health Sciences University, Portland 97201, USA.

Magazine: Trends in Neurosciences

Date: Oct 1, 2000

Neurology [SP]

Intermittent or pulsatile dopamine-receptor stimulation is postulated to induce plastic changes in motor systems that are responsible for the development of the motor fluctuations and dyskinesia that complicate long-term L-dopa therapy of Parkinson's disease. As a corollary to this hypothesis, continuous dopamine-receptor stimulation can avoid or reverse these complications.

Such continuous stimulation is unlikely to mimic completely the normal function of the dopaminergic system, but should avoid the supra-physiological swings in extracellular dopamine that accompany intermittent L-dopa dosing. The concern is that this continuous stimulation might induce tolerance rather than sensitization to some effects of L-dopa.

Open clinical trials support the value of continuous dopaminergic stimulation in Parkinson's disease with established motor complications, but rigorous studies, although experimentally difficult, are needed.

CITATION  Trends Neurosci. 2000 Oct;23(10 Suppl):S109-15

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