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- W4290805576 abstract "Ischemic stroke remains a devastating cerebrovascular disease that accounts for a high proportion of mortality and disability worldwide. MicroRNAs (miRNAs) are a class of small non-coding RNAs that are responsible for regulation of post-transcriptional gene expression, and growing evidence supports a role for miRNAs in stroke injury and recovery. The current study examined the role of miR-182 in experimental stroke using both in vitro and in vivo models of ischemic injury. Brain levels of miR-182 significantly increased after transient middle cerebral artery occlusion (MCAO) in mice and in primary astrocyte cultures subjected to combined oxygen–glucose deprivation/reperfusion (OGD/R) injury. In vivo, stroke volume and neurological score were significantly improved by pre-treatment with miR-182 antagomir. Astrocyte cultures stressed with OGD/R resulted in mitochondrial fragmentation and downregulation of cortactin, an actin-binding protein. Inhibition of miR-182 significantly preserved cortactin expression, reduced mitochondrial fragmentation and improved astrocyte survival after OGD/R. In parallel, lipopolysaccharide (LPS)-induced nitric-oxide release in astrocyte cultures was significantly reduced by miR-182 inhibition, translating to reduced injury in primary neuronal cultures subjected to conditioned medium from LPS-treated astrocytes. These findings identify miR-182 and/or cortactin as potential clinical targets to preserve mitochondrial structure and mitigate neuroinflammation and cell death after ischemic stroke." @default.
- W4290805576 created "2022-08-12" @default.
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- W4290805576 date "2022-08-11" @default.
- W4290805576 modified "2023-09-26" @default.
- W4290805576 title "MiR-182 Inhibition Protects Against Experimental Stroke in vivo and Mitigates Astrocyte Injury and Inflammation in vitro via Modulation of Cortactin Activity" @default.
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- W4290805576 doi "https://doi.org/10.1007/s11064-022-03718-6" @default.
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