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- W2181566246 abstract "The cytokine interleukin-1 (IL-1) has been strongly implicated in the pathogenesis of ischemic brain damage. Evidence to date suggests that the major form of IL-1 contributing to ischemic injury is IL-1β rather than IL-1α, but this has not been tested directly. The objective of the present study was to compare the effects of transient cerebral ischemia [30 min middle cerebral artery occlusion (MCAO)] on neuronal injury in wild-type (WT) mice and in IL-1α, IL-1β, or both IL-1α and IL-1β knock-out (KO) mice. Mice lacking both forms of IL-1 exhibited dramatically reduced ischemic infarct volumes compared with wild type (total volume, 70%; cortex, 87% reduction). Ischemic damage compared with WT mice was not significantly altered in mice lacking either IL-1α or IL-1β alone. IL-1β mRNA, but not IL-1α or the IL-1 type 1 receptor, was strongly induced by MCAO in WT and IL-1α KO mice. Administration (intracerebroventricularly) of recombinant IL-1 receptor antagonist significantly reduced infarct volume in WT (-32%) and IL-1α KO (-48%) mice, but had no effect on injury in IL-1β or IL-1α/β KO mice. These data confirm that IL-1 plays a major role in ischemic brain injury. They also show that chronic deletion of IL-1α or IL-1β fails to influence brain damage, probably because of compensatory changes in the IL-1 system in IL-1α KO mice and changes in IL-1-independent mediators of neuronal death in IL-1β KO mice." @default.
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- W2181566246 date "2001-08-01" @default.
- W2181566246 modified "2023-10-13" @default.
- W2181566246 title "Role of IL-1α and IL-1β in Ischemic Brain Damage" @default.
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- W2181566246 doi "https://doi.org/10.1523/jneurosci.21-15-05528.2001" @default.
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