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Vitamin E induces ramification and downregulation of adhesion molecules in cultured microglial cells by Frank L. Heppner; Karl Roth; Robert Nitsch; Nils P. Hailer is a Neuroscience article available to read on EtoBox.

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Microglial cells in the healthy adult CNS possess a characteristic ramified morphology and show little or no expression of major histocompatibility complex (MHC) or adhesion molecules. In contrast, microglial cells isolated from newborn rat brains inevitably show a nonramified amoeboid morphology and express immunoeffector molecules, such as MHC class I and II, and various adhesion molecules thought to be markers of microglial activation. Furthermore, they produce large amounts of oxygen radicals. Treatment of cultured microglial cells with the antioxidants vitamin E (alpha-tocopherol) and vitamin C (ascorbic acid) induced a ramified microglial morphology after 48 h in vitro, otherwise only seen in healthy adult CNS tissue or in co-culture with astrocytes. Morphological transformation of microglial cells was quantified by morphometric analysis and was found to be statistically significant. Ramification of microglia induced by vitamin E was accompanied by downregulated expression of adhesion molecules leukocyte function antigen-1, very late antigen-4, and intercellular adhesion molecule-1, as assessed by FACS analysis and immunocytochemistry. Moreover, cell numbers of microglia trea

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Author

Frank L. Heppner; Karl Roth; Robert Nitsch; Nils P. Hailer

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0894-1491)

Published

1998

Language

EN

Field

Neuroscience (Life Sciences)