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Monoclonal anti-myelin-associated glycoprotein (MAG) antibodies. Shuzo SATO 1 , Masatoyo NISHIZAWA 1 , Masami TANAKA 1 , Takashi INUZUKA 1 , Keiko TANAKA 1 , Hiroko BABA 1 , Nobuyuki MIYATANI 1 , Tadashi MIYATAKE 1 1Department of Neurology, Brain Research Institute, Niigata University pp.281-290
Published Date 1987/4/10
DOI https://doi.org/10.11477/mf.1431905883

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  • Abstract
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 The myelin-associated glycoprotein (MAG) is a quantitatively minor constituent of myelin with an apparent molecular weight of 100,000 Da. Since immunocytochemical studies demonstrated its presence in the periaxonal regions of myelin sheaths in human tissue, it may be involved in glia-axon interactions. Recently the cross antigenicity between MAG and neural cell adhesion molecules has been reported. Therefore, roles of MAG in cell to cell interactions in nervous system are speculated to be important. The immunocytochemical studies have shown that the MAG is decreased in periplaque regions of some multiple sclerosis lesions that appear normal when immunostained for myelin basic protein (BP). These results suggest that loss of immunoreactivity of MAG in the plaque periphery may be early biochemical change associated with demyelination. Interest in the role of MAG in human demyelinating diseases also drives from recent case reports on patients with chronic polyneuropathy and monoclonal anti-MAG antibody as IgM paraprotein.

 Another recent topic on MAG is its cross antigenicity with various tissues such as the immune system especially natural killer cells, neoplasmas such as lung cance tissues and cell adhesion molecules.


Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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