SCH 644343 alleviates ischemic stroke-induced neuroinflammation by promoting microglial polarization via the IL-4/SREBP-1 signaling pathway.
European journal of pharmacology(2023)
摘要
Ischemic stroke (IS), a kind of acute cerebrovascular disease, is one of the most common diseases, and it endangers the lives and health of elderly individuals. Inflammation is a key factor leading to stroke, making it a potential therapeutic target. Previous studies have found that neuroinflammation is closely associated with microglial polarization. Due to the various side effects of current drugs used to treat neuroinflammation, it is important to explore alternative drugs with anti-inflammatory activity for neuroinflammation treatment. In the present study, we investigated the effect of SCH 644343 (SCH), a natural compound, on neuroinflammation induced by IS and explored the mechanism. We found that SCH meliorated the phenotypes of IS in vivo, which was correlated with the increased percentage of infiltrated M2 macrophages in brain after stroke. SCH exerted a significant effect against oxygen-glucose deprivation/reoxygenation (OGD/R) in BV2 cells in vitro by inhibiting M1 microglial polarization and promoting M2 microglial polarization. Furthermore, suppression of SREBP-1 expression by pretreatment with the SREBP-1 inhibitor 25-HC attenuated the effect of SCH on IS in vitro. Taken together, SCH exerts anti-IS effect by promoting microglial polarization via the IL-4/SREBP-1 signaling pathway.
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