Monday January 22nd 2018

Neuromyelitis optica IgG stimulates an immunological response in rat astrocyte cultures

Neuromyelitis optica (NMO) is a primary astrocyte disease associated with central nervous system inflammation, demyelination, and tissue injury. Brain lesions are frequently observed in regions enriched in expression of the aquaporin‐4 (AQP4) water channel, an antigenic target of the NMO IgG serologic marker. Based on observations of disease reversibility and careful characterization of NMO lesion development, we propose that the NMO IgG may induce a dynamic immunological response in astrocytes. Using primary rat astrocyte‐enriched cultures and treatment with NMO patient‐derived serum or purified IgG, we observed a robust pattern of gene expression changes consistent with the induction of a reactive and inflammatory phenotype in astrocytes. The reactive astrocyte factor lipocalin‐2…

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Neuromyelitis optica IgG stimulates an immunological response in rat astrocyte cultures

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