Fig. 2.
Intracellular α-synuclein homeostasis is maintained via the ubiquitin–proteasome and lysosomal autophagy systems. Impairment of these degradation systems by OS, mitochondrial dysfunction, or neuroinflammation could contribute to α-synuclein accumulation. Furthermore, mutations of genes like LRRK2, DJ-1, Parkin, and Pink1 cause mitochondrial dysfunction and increase cell death. Finally, OS and neuroinflammation appear to be connected