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Issue title: Chronic Inflammation and Amyloidogenesis in Alzheimer's Disease: The Emerging Role of Infection
Guest editors: Judith Miklossyx and Ralph N. Martinsy
Article type: Research Article
Authors: Schwab, Claudia | McGeer, Patrick L.; *
Affiliations: Kinsmen Laboratory of Neurological Research, University of British Columbia, Vancouver, BC, Canada | [x] The University of British Columbia, Kinsmen Laboratory of Neurological Research, Vancouver, BC, Canada | [y] Sir James McCusker Alzheimer's Disease Research Unit, University of Western Australia, Hollywood Private Hospital, 115 Monash Avenue, Nedlands, Perth, WA 6009, Australia
Correspondence: [*] Corresponding author: Dr. Patrick L. McGeer, Kinsmen Laboratory of Neurological Research, University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC V6T1Z3, Canada. Tel.: +1 604 822 7377; Fax: +1 604 822 7086; E-mail: mcgeerpl@interchange.ubc.ca
Abstract: Alzheimer and a number of other neurodegenerative diseases are characterized by the presence of reactive microglia and reactive astrocytes in association with the lesions. The classic view that microglia exist primarily in either a resting or activated state needs to be broadened in view of recent results. Resting microglia are in constant activity sampling their surround. Activated microglia may be pro-inflammatory, releasing inflammatory cytokines and other inflammatory mediators, or anti-inflammatory, promoting the healing process. There is evidence that microglial phagocytosis is more powerful in the anti-inflammatory state. Activated astrocytes also have pro-inflammatory and anti-inflammatory properties. In the pro-inflammatory state they release inflammatory cytokines. In the anti-inflammatory state they release various growth factors. In AD and other neurodegenerative diseases, both microglia and astrocytes are in a pro-inflammatory state. From a therapeutic point of view it is desirable to find methods of tipping the balance towards an anti-inflammatory state for both types of glia.
Keywords: Amyloid-β protein, amyotrophic lateral sclerosis, astrocytes, microglia, neurotoxicity, Parkinson disease, synuclein
DOI: 10.3233/JAD-2008-13402
Journal: Journal of Alzheimer's Disease, vol. 13, no. 4, pp. 359-369, 2008
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