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Muscle-Specific Receptor Tyrosine Kinase Antibody Positive Myasthenia Gravis Masakatsu Motomura 1 , Hiroko Kitanosono 2 , Shunsuke Yoshimura 3 , Hirokazu Shiraishi 4 1Medical Engineering course, Department of Engineering, Faculty of Engineering, Nagasaki Institute of Applied Science 2Department of Neurology, Nagasaki Prefecture Shimabara Hospital 3Department of Neurology and Strokology, Nagasaki University Hospital 4Department of Neurology, NHO Nagasaki National Hospital Keyword: 重症筋無力症 , Agrin-Lrp4-MuSKシグナル伝達経路 , 筋特異的受容体型チロシンキナーゼ抗体 , IgG4サブクラス , Fab-arm交換 , myasthenia gravis , Agrin-Lrp4-MuSK signaling pathway , muscle-specific receptor tyrosine kinase , IgG4 subclass , Fab-arm exchange pp.623-629
Published Date 2024/5/1
DOI https://doi.org/10.11477/mf.1416202652
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Abstract

Reportedly, patients with muscle-specific kinase (MuSK) antibody-positive myasthenia gravis (MG) account for approximately 3.0% of all patients with MG in Japan. Compared with patients who have acetylcholine receptor antibody-positive MG, those with MuSK antibody-positive MG show young-onset disease with female predominance, a low rate of ocular involvement (5.9%), and greater severity of dysphagia. The aforementioned types of MG are indistinguishable based on clinical symptoms and electrophysiological tests, and measurement of MuSK antibodies is essential for diagnosis. Thymectomy and complement inhibitors are not indicated for treatment, and acetylcholinesterase inhibitors, steroids, immunosuppressants, plasma exchange, intravenous immunoglobulin therapy, and neonatal Fc receptor inhibitors are used.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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