A bioinformatics study in brown rats (Rattus norvegicus) identified 68 time-course differentially expressed microRNAs after spinal cord injury, with the mir-129-1 noted in the literature as being suppressed to induce overexpression of CDK6 and promote cell proliferation [Liu et al. DOI:10.1097/BRS.0000000000001323]. In methamphetamine research, the mir-129-1 was found to be upregulated in SH-SY5Y cells treated with METH and is a target of circ_0015891, implicating it in dopaminergic apoptosis [Xu et al. DOI:10.1007/S10571-023-01323-X].