SLC18A2 and type 1 diabetes mellitus: Jiang et al. (2020) found a decreased VMAT2 expression in the striatum due to the β-cell impairment in a type 1 DM (T1DM) rat model. Furthermore, VMAT2 expression in the striatum was also increased with the recovery of BCM and glucose levels in DM rats after streptozotocin injection treatment (Jiang et al., 2020).