MicroRNA-9-5p alleviates blood-brain barrier damage and neuroinflammation after traumatic brain injury.

ABSTRACT: The level of microRNA-9-5p (miRNA-9-5p) in brain tissues is significantly changed after traumatic brain injury (TBI). However, the effect of miRNA-9-5p for brain function in TBI has not been elucidated. In this study, a controlled cortical impact model was used to induce TBI in Sprague-Dawley rats, and an oxygen glucose deprivation model was used to mimic the pathological state in vitro. Brain microvascular endothelial cells (BMECs) and astrocytes were extracted from immature Sprague-Dawley rats and cocultured to reconstruct blood-brain barrier (BBB) in vitro. The results show that the level of miRNA-9-5p was significantly increased in brain tissues after TBI, and up-regulation of miRNA9-5p contributed to the recovery of neurological function. Up-regulation of miRNA-9-5p with miRNA agomir

SUBMITTER: Wu J 

PROVIDER: S-EPMC7317896 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature