BDNF and ischemic stroke: Serum samples from 78 diabetic and non-diabetic patients with ischemic stroke (acute ischemic stroke or transient ischemic attack) revealed a high level of miRNA-195-5p and miRNA-451a at 0, 24, and 72 hours after the stroke event, with low levels of BDNF and VEGF-A at the same time-points (Giordano et al., 2020).