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Updated: Feb 13, 2026
05:51
Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease
Published on: October 14, 2021
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Synaptic plasticity and levodopa-induced dyskinesia: electrophysiological and structural abnormalities
Barbara Picconi1, Elvira De Leonibus2,3, Paolo Calabresi4,5
1Laboratory of Neurophysiology, IRCCS Fondazione Santa Lucia c/o CERC, via del Fosso di Fiorano 64, 00143, Rome, Italy. b.picconi@hsantalucia.it.
Journal of Neural Transmission (Vienna, Austria : 1996)
|March 2, 2018
Summary
Levodopa treatment for Parkinson's disease (PD) can cause dyskinesia. Studies show this is linked to aberrant synaptic plasticity and a loss of homeostatic mechanisms in the brain.
Area of Science:
- Neuroscience
- Neurology
- Pharmacology
Background:
- Parkinson's disease (PD) involves the degeneration of dopamine neurons.
- Levodopa (L-DOPA) is the primary treatment, but causes dyskinesia.
- Dyskinesia is linked to dopamine signaling and structural changes.
Purpose of the Study:
- To investigate the synaptic and morphological basis of levodopa-induced dyskinesia (LIDs).
- To explore aberrant synaptic plasticity in parkinsonian patients experiencing LIDs.
Main Methods:
- Electrophysiological approaches in both animal models and human patients.
- Morphological analysis of synaptic structures.
- In vivo and in vitro studies.
Main Results:
- Aberrant activation of the dopamine D1/ERK pathway and spine abnormalities contribute to LIDs.
- Electrophysiological and morphological evidence shows altered synaptic plasticity in basal ganglia and cortical areas during LIDs.
- Studies reveal a loss of homeostatic synaptic mechanisms in LIDs.
Conclusions:
- LIDs are associated with complex synaptic changes in the brain.
- A loss of homeostatic synaptic mechanisms is a key feature of LIDs.
- Understanding these mechanisms may lead to improved PD therapies.
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