Abstract
We report the first case of a Japanese patient with anti-155/140 antibody-positive juvenile dermatomyositis (JDM). Her clinical features included severe cutaneous involvement. Serum B cell-activating factor levels were significantly increased. Mature class-switched memory B cells accumulated in inflamed muscle tissue but decreased in peripheral blood. These findings indicate that loss of B cell tolerance and accumulation of mature B cells in inflamed muscle tissue play an important role in the pathogenesis of JDM.
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Yokoyama, T., Shimizu, M., Ishikawa, S. et al. Accumulation of mature B cells in the inflamed muscle tissue of a patient with anti-155/140 antibody-positive juvenile dermatomyositis. Mod Rheumatol 23, 167–171 (2013). https://doi.org/10.1007/s10165-012-0627-8
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DOI: https://doi.org/10.1007/s10165-012-0627-8