The hallmark of Parkinson’s disease (PD) is the accumulation of alpha-synuclein (AS) aggregates. Prior to the central nervous system involvement, PD establishes itself in the gut as a result of the complex interplay between microbiota, the host’s immune/neural systems and increased intestinal permeability. Inflammatory Bowel Disease (IBD) patients present a higher number of AS aggregates in the intestinal wall ...