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- W4384819705 abstract "Abstract Resident microglia are important to maintain homeostasis in the central nervous system, which includes the retina. The retinal microglia become activated in numerous pathological conditions, but the molecular signatures of these changes are poorly understood. Here, using an approach based on FACS and RNA‐seq, we show that microglial gene expression patterns gradually change during RGC degeneration induced by optic nerve injury. Most importantly, we found that the microglial cells strongly expressed Tnf and Il1α , both of which are known to induce neurotoxic reactive astrocytes, and were characterized by Gpr84 high ‐expressing cells in a particular subpopulation. Moreover, ripasudil, a Rho kinase inhibitor, significantly blunted Gpr84 expression and cytokine induction in vitro and in vivo. Finally, GPR84‐deficient mice prevented RGC loss in optic nerve‐injured retina. These results reveal that Rho kinase‐mediated GPR84 alteration strongly contribute to microglial activation and promote neurotoxicity, suggesting that Rho‐ROCK and GPR84 signaling may be potential therapeutic targets to prevent the neurotoxic microglial phenotype induced by optic nerve damage, such as occurs in traumatic optic neuropathy and glaucoma." @default.
- W4384819705 created "2023-07-21" @default.
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- W4384819705 date "2023-07-20" @default.
- W4384819705 modified "2023-10-14" @default.
- W4384819705 title "The <scp>GPR84</scp> molecule is a mediator of a subpopulation of retinal microglia that promote <scp>TNF</scp>/<scp>IL</scp>‐1α expression via the <scp>rho‐ROCK</scp> pathway after optic nerve injury" @default.
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- W4384819705 doi "https://doi.org/10.1002/glia.24442" @default.
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