Plastic effects of L-DOPA treatment in the basal ganglia and their relevance to the development of dyskinesia.
The development of L-DOPA-induced dyskinesia (LID) is attributed to plastic responses triggered by dopamine (DA) receptor stimulation in the parkinsonian brain. This article reviews studies that have uncovered different levels of maladaptive plasticity in animal models of LID. Rats developing dyskinesia on chronic L-DOPA treatment show abnormal patterns of signaling pathway activation and synaptic