Optogenetic - Treatment of Parkinson Disease and Challenges Ahead

Optogenetic tools with photosensitive opsins and LEDs enable precise spatial and temporal neural control to study neurodegenerative disorders, especially Parkinson’s Disease (PD). Research highlights the role of optogenetics in understanding basal ganglia circuitry, the direct and indirect pathways, and the molecular basis of PD, including -synuclein aggregation and dopaminergic neuron loss. The 6-OHDA model is frequently manipulated via optogenetics to study this loss, and high-frequency optical stimulation shows potential in ameliorating PD motor symptoms like bradykinesia and hypokinesia. Furthermore, researchers are using optogenetic modulation to study conventional PD treatments, such as deep brain stimulation and Levodopa, to better understand underlying circuitry mechanisms of PD.