NORAD and Parkinson disease: Mechanistic studies revealed that NORAD protects cells against MPP+-induced destruction, oxidative stress, and inflammatory responses by acting as a miR-204-5p sponge and thus indirectly regulating the level of its target SLC5A3 (solute carrier family 5 member 3) (Table S1), which is downregulated in the putamen in PD [86].