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Curr Pharm Des. 2010;16(38):4213-24.

Interleukin-18, from neuroinflammation to Alzheimer's disease.

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  • 1IRCCS Fondazione Santa Lucia, Department of Clinical and Behavioral Neurology, Experimental Neuro-psychobiology Lab Via Ardeatina, 306, I-00179 Roma, Italy. p.bossu@hsantalucia.it

Abstract

A large body of evidence on brain development and ageing has revealed that inflammatory processes profoundly affect brain functions during life span of mammalians, including humans. Activation of innate immune mechanisms leading to pro-inflammatory cytokine up-regulation is involved in devastating and disabling human brain illnesses, as Alzheimer's disease (AD), a progressive neurodegenerative disease that causes dementia in the elderly. Emerging data indicates that the cytokine Interleukin (IL)-18, one of the key mediator of inflammation and immune response, has relevance in the physiopathological processes of the brain, by ultimately influencing the integrity of neurons and putatively contributing to AD. In this review, the relationship between specific IL-18-mediated processes and AD neurodegeneration is summarized and clinical studies pointing to a role of the cytokine in the pathology are discussed. Altogether, the presented data indicate that a more complete knowledge of the molecular mechanisms underlying IL-18 implication in neuroinflammatory and neurodegenerative pathways could contribute toward the development of new therapeutic strategies for AD.

PMID:
21184660
[PubMed - indexed for MEDLINE]
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