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Defining a Model of Classical Activation in Microglia

Microglia, the resident immune cells of the central nervous system, can become activated following injury, disease, or infection. In vitro, they can be activated by stimuli, which determine the inflammatory phenotype they will develop. In this thesis, stimulating microglia with tumor necrosis factor- and interferon- resulted in classical activation, characterized by proliferation, increased transcription of complement receptor 3 and major histocompatibility class II molecules, and elevated production and transcription of interleukin-1 and nitric oxide. Stimulation with TNF and IFN also changed the intensity of phosphorylated (activated) cyclic adenosine monophosphate response element binding protein immunoreactivity in microglia. Specifically, cells differentiated into populations with high or low pCREB intensity. This was the first example of such a response in microglia and was representative of what occurred in vivo, after ICH. Thus, the characterization of this model will be useful for future studies of this and other intracellular pathways of classically activated microglia.

Identiferoai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OTU.1807/17186
Date24 February 2009
CreatorsKena-Cohen, Veronique
ContributorsSchlichter, Lyanne C.
Source SetsLibrary and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada
Languageen_ca
Detected LanguageEnglish
TypeThesis
Format1138060 bytes, application/pdf

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