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Anti-Ganglionic Acetylcholine Receptor Antibodies, Autoimmune Autonomic Ganglionopathy, and Related Disorders Shunya Nakane 1,2 , Mari Watari 1 , Yukio Ando 1 1Department of Neurology, Graduate School of Medical Sciences, Kumamoto University 2Asian Neurological Intractable Diseases Research and Clinic (AIDReC), Graduate School of Medical Sciences, Kumamoto University Keyword: 抗自律神経節アセチルコリン受容体抗体 , 自己免疫性自律神経節障害 , 自律神経外症状 , 自己免疫性消化管運動障害 , anti-ganglionic acetylcholine receptor antibody , autoimmune autonomic ganglionopathy , extra-autonomic manifestations , autoimmune gastrointestinal dysmotility pp.383-393
Published Date 2018/4/1
DOI https://doi.org/10.11477/mf.1416201011
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Abstract

The clinical associations of the anti-ganglionic acetylcholine receptor (gAChR) have not yet been described fully. It is not known whether central nervous system (CNS) involvement and endocrine disorders are the extra-autonomic features of autoimmune autonomic ganglionopathy (AAG), or whether it is related to circulating anti-gAChR antibodies (Abs). The present study prospectively identified 123 Abs-positive AAG patients in Japan and collated their clinical features, investigations, and immunotherapy responses. Luciferase immunoprecipitation systems were used to detect anti-α3 and -β4 gAChR Abs. A gradual mode of onset was more common among the 123 seropositive AAG patients examined. Patients with AAG demonstrated widespread autonomic dysfunction. In particular, orthostatic hypotension and lower gastrointestinal tract dysfunction were frequently observed. Approximately 80% of patients with seropositive AAG exhibited extra-autonomic manifestations, including CNS involvement, endocrine disorders, other autoimmune disease, and tumors. Additionally, the majority exhibited a marked improvement in clinical status and the levels of anti-gAChR Abs with immunotherapy. CNS involvement and endocrine disorders were frequent among the seropositive patients with AAG, indicating that seropositivity for AAG may be associated with underlying conditions such as autoimmune diseases or tumors.


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

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