“…Although some neurodegenerative diseases can be managed with treatments, and the progression of the disease may be slow, many remain incurable [ 3 ]. Common underlying processes contribute to the degeneration of neurons, but the molecular mechanisms of neurodegenerative diseases are complex and varied, and they can differ depending on the specific conditions [ 4 ]. Neurodegenerative processes and neuronal disorders also occur in the spinal cord [ 5 ], retina [ 6 ], and enteric nervous system [ 7 ], eventually reflecting and/or affecting what occurs in the brain.…”