The importance of inflammatory mechanisms in alzheimer disease
Identifieur interne : 001400 ( Istex/Curation ); précédent : 001399; suivant : 001401The importance of inflammatory mechanisms in alzheimer disease
Auteurs : Edith G. Mcgeer [Canada] ; Patrick L. Mcgeer [Canada]Source :
- Experimental Gerontology [ 0531-5565 ] ; 1998.
English descriptors
Abstract
Lesions in such chronic neurodegenerative disorders as Alzheimer disease (AD), Parkinson disease, the parkinsonism dementia complex of Guam, and amyotrophic lateral sclerosis have associated with them a variety of proteins known to be involved in inflammatory processes. This is particularly true of AD, where inflammatory reactions are thought to be important contributors to the neuronal loss. Proteins present include complement proteins, complement inhibitors, acute phase reactants, inflammatory cytokines, proteases, and protease inhibitors. Studies of cultured human astrocytes and microglia, obtained from postmortem brain, have established that nearly all of these proteins are produced by one or another of these cell types. Human neurons also produce many inflammatory proteins and their inhibitors, creating complex interactions. Accumulations of amyloid and extracellular tangles apparently act as irritants, causing the activation of complement, the initiation of reactive changes in microglia, and the release of potentially neurotoxic products. Such products include the membrane attack complex, oxygen free radicals, and excess glutamate. Twenty epidemiological studies that have been published to date indicate that populations taking antiinflammatory drugs have a significantly reduced prevalence of AD or a slower mental decline. One small clinical trial with indomethacin showed arrest of the disease over a six-month period. Therapeutic intervention in key inflammatory processes holds great promise for the amelioration of AD and possibly other neurodegenerative disorders.
Url:
DOI: 10.1016/S0531-5565(98)00013-8
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Mcgeer</name><affiliation wicri:level="1"><mods:affiliation>E-mail: mcgeerpl@unixg.ubc.ca</mods:affiliation><country wicri:rule="url">Canada</country></affiliation><affiliation wicri:level="1"><mods:affiliation>Kinsmen Laboratory of Neurological Research, University of British Columbia, 2255 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Kinsmen Laboratory of Neurological Research, University of British Columbia, 2255 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3</wicri:regionArea></affiliation></author><author><name sortKey="Mcgeer, Patrick L" sort="Mcgeer, Patrick L" uniqKey="Mcgeer P" first="Patrick L." last="Mcgeer">Patrick L. 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Mcgeer</name><affiliation wicri:level="1"><mods:affiliation>E-mail: mcgeerpl@unixg.ubc.ca</mods:affiliation><country wicri:rule="url">Canada</country></affiliation><affiliation wicri:level="1"><mods:affiliation>Kinsmen Laboratory of Neurological Research, University of British Columbia, 2255 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Kinsmen Laboratory of Neurological Research, University of British Columbia, 2255 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3</wicri:regionArea></affiliation></author><author><name sortKey="Mcgeer, Patrick L" sort="Mcgeer, Patrick L" uniqKey="Mcgeer P" first="Patrick L." last="Mcgeer">Patrick L. 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This is particularly true of AD, where inflammatory reactions are thought to be important contributors to the neuronal loss. Proteins present include complement proteins, complement inhibitors, acute phase reactants, inflammatory cytokines, proteases, and protease inhibitors. Studies of cultured human astrocytes and microglia, obtained from postmortem brain, have established that nearly all of these proteins are produced by one or another of these cell types. Human neurons also produce many inflammatory proteins and their inhibitors, creating complex interactions. Accumulations of amyloid and extracellular tangles apparently act as irritants, causing the activation of complement, the initiation of reactive changes in microglia, and the release of potentially neurotoxic products. Such products include the membrane attack complex, oxygen free radicals, and excess glutamate. Twenty epidemiological studies that have been published to date indicate that populations taking antiinflammatory drugs have a significantly reduced prevalence of AD or a slower mental decline. One small clinical trial with indomethacin showed arrest of the disease over a six-month period. Therapeutic intervention in key inflammatory processes holds great promise for the amelioration of AD and possibly other neurodegenerative disorders.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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