Mechanisms of cell death in Alzheimer disease--immunopathology.
Identifieur interne : 003855 ( Main/Exploration ); précédent : 003854; suivant : 003856Mechanisms of cell death in Alzheimer disease--immunopathology.
Auteurs : P L Mcgeer [Canada] ; E G McgeerSource :
- Journal of neural transmission. Supplementum [ 0303-6995 ] ; 1998.
English descriptors
- KwdEn :
- MESH :
- immunology : Alzheimer Disease, Brain, Parkinson Disease.
- pathology : Alzheimer Disease, Astrocytes, Brain, Microglia, Neurons, Parkinson Disease.
- Humans, Inflammation, Models, Immunological, Models, Neurological.
Abstract
Lesions in such chronic neurodegenerative disorders as Alzheimer disease, 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 Alzheimer disease where inflammatory reactions are thought to be important contributors to the neuronal loss. They 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 data indicate that populations taking antiinflammatory drugs have a significantly reduced prevalence of Alzheimer disease or a slower mental decline. One small clinical trial with indomethacin showed arrest of the disease over a 6 month period. Therapeutic intervention in key inflammatory processes holds great promise for the amelioration of Alzheimer disease and possibly other neurodegenerative disorders.
PubMed: 9850924
Affiliations:
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Le document en format XML
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Supplementum</title><idno type="ISSN">0303-6995</idno><imprint><date when="1998" type="published">1998</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alzheimer Disease (immunology)</term><term>Alzheimer Disease (pathology)</term><term>Astrocytes (pathology)</term><term>Brain (immunology)</term><term>Brain (pathology)</term><term>Humans</term><term>Inflammation</term><term>Microglia (pathology)</term><term>Models, Immunological</term><term>Models, Neurological</term><term>Neurons (pathology)</term><term>Parkinson Disease (immunology)</term><term>Parkinson Disease (pathology)</term></keywords><keywords scheme="MESH" qualifier="immunology" xml:lang="en"><term>Alzheimer Disease</term><term>Brain</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Alzheimer Disease</term><term>Astrocytes</term><term>Brain</term><term>Microglia</term><term>Neurons</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Humans</term><term>Inflammation</term><term>Models, Immunological</term><term>Models, Neurological</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Lesions in such chronic neurodegenerative disorders as Alzheimer disease, 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 Alzheimer disease where inflammatory reactions are thought to be important contributors to the neuronal loss. They 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 data indicate that populations taking antiinflammatory drugs have a significantly reduced prevalence of Alzheimer disease or a slower mental decline. One small clinical trial with indomethacin showed arrest of the disease over a 6 month period. Therapeutic intervention in key inflammatory processes holds great promise for the amelioration of Alzheimer disease and possibly other neurodegenerative disorders.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Mcgeer, E G" sort="Mcgeer, E G" uniqKey="Mcgeer E" first="E G" last="Mcgeer">E G Mcgeer</name></noCountry><country name="Canada"><noRegion><name sortKey="Mcgeer, P L" sort="Mcgeer, P L" uniqKey="Mcgeer P" first="P L" last="Mcgeer">P L Mcgeer</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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