Journal
TRENDS IN NEUROSCIENCES
Volume 28, Issue 9, Pages 487-493Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tins.2005.06.008
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Interleukin (IL)-18 is a potent inflammatory cytokine of the IL-1 family. It is synthesized as an inactive precursor (pro-IL-18), which is cleaved into its functionally active form by caspase-1. Resident cells of the CNS express IL-18 and caspase-1 constitutively, thus providing a local IL-18-dependent immune response. Recent studies have highlighted a crucial role for IL-18 in mediating neuroinflammation and neurodegeneration in the CNS under pathological conditions, such as bacterial and viral infection, autoimmune demyelinating disease, and hypoxic-ischemic, hyperoxic and traumatic brain injuries. This review provides a synopsis of the current knowledge of IL-18-dependent mechanisms of action during acute neurodegeneration in immature and adult brains.
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