alexa Canonical Nlrp3 inflammasome links systemic low-grade inflammation to functional decline in aging.
Medicine

Medicine

Journal of Gerontology & Geriatric Research

Author(s): Youm YH, Grant RW, McCabe LR, Albarado DC, Nguyen KY,

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Abstract Despite a wealth of clinical data showing an association between inflammation and degenerative disorders in the elderly, the immune sensors that causally link systemic inflammation to aging remain unclear. Here we detail a mechanism by which the Nlrp3 inflammasome controls systemic low-grade age-related "sterile" inflammation in both periphery and brain independently of the noncanonical caspase-11 inflammasome. Ablation of Nlrp3 inflammasome protected mice from age-related increases in the innate immune activation, alterations in CNS transcriptome, and astrogliosis. Consistent with the hypothesis that systemic low-grade inflammation promotes age-related degenerative changes, the deficient Nlrp3 inflammasome-mediated caspase-1 activity improved glycemic control and attenuated bone loss and thymic demise. Notably, IL-1 mediated only Nlrp3 inflammasome-dependent improvement in cognitive function and motor performance in aged mice. These studies reveal Nlrp3 inflammasome as an upstream target that controls age-related inflammation and offer an innovative therapeutic strategy to lower Nlrp3 activity to delay multiple age-related chronic diseases. Copyright © 2013 Elsevier Inc. All rights reserved.
This article was published in Cell Metab and referenced in Journal of Gerontology & Geriatric Research

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