OIP5 and Parkinson disease: The level of miR-137-3p and the molecular processes it modulates can be affected by dysregulated ceRNAs, such as the imprinted long non-coding RNA (lncRNA) Opa-interacting protein 5 antisense RNA 1 (OIP5-AS1) that was downregulated in a 1-methyl-4-phenylpyridinium (MPP+)-induced SH-SY5Y cell model of PD [52] and is also implicated in a plethora of other disease conditions [71].