PRKN and Parkinson disease: Analysis of expression of miRNAs in PD-associated C. elegans models showed underexpression of the family of miR-64 and miR-65 in human A53T α-synuclein overexpression and mutated vesicular catecholamine transporter (cat-1) model animals, as well as underexpression of let-7 family members in the α-synuclein overexpression and parkin (pdr-1) mutated strains.