Autoimmune disorders of the neuromuscular junction.

The neuromuscular junction (NMJ) is a specialized synapse with a complex structural and functional organization. It is a target for a variety of immunological disorders and these diseases usually respond well to immunotherapies. The understanding of the immunological basis of myasthenia gravis, the...

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Main Author: Vincent, A
Format: Journal article
Language:English
Published: 2008
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author Vincent, A
author_facet Vincent, A
author_sort Vincent, A
collection OXFORD
description The neuromuscular junction (NMJ) is a specialized synapse with a complex structural and functional organization. It is a target for a variety of immunological disorders and these diseases usually respond well to immunotherapies. The understanding of the immunological basis of myasthenia gravis, the most common neuromuscular junction disorder, has improved in the recent years. Most patients have antibodies to the acetylcholine receptor (AChR), but around 10% have AChR antibodies that are only identified by novel methods, and up to 5% have muscle-specific kinase antibodies which define a different subgroup of myasthenia. The spectrum of antibodies and their pathophysiological aspects are being elucidated. Even though less common, Lambert Eaton myasthenic syndrome (LEMS) is important to recognize. The abnormality in LEMS is a presynaptic failure to release enough packets of ACh, caused by antibodies to the presynaptic voltage-gated calcium channels. More than half these patients have a small cell carcinoma of lung. Acquired neuromyotonia (NMT) is a condition associated with muscle hyperactivity. Clinical features include muscle stiffness, cramps, myokymia, pseudomyotonia and weakness. The immune mechanisms of acquired NMT relate to loss of voltage-gated potassium channel function. This review will focus on the important recent developments in the immune-mediated disorders of the NMJ.
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spelling oxford-uuid:74600d76-5d69-4a0c-aa7e-252cc95e3dcb2022-03-26T20:02:18ZAutoimmune disorders of the neuromuscular junction.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:74600d76-5d69-4a0c-aa7e-252cc95e3dcbEnglishSymplectic Elements at Oxford2008Vincent, AThe neuromuscular junction (NMJ) is a specialized synapse with a complex structural and functional organization. It is a target for a variety of immunological disorders and these diseases usually respond well to immunotherapies. The understanding of the immunological basis of myasthenia gravis, the most common neuromuscular junction disorder, has improved in the recent years. Most patients have antibodies to the acetylcholine receptor (AChR), but around 10% have AChR antibodies that are only identified by novel methods, and up to 5% have muscle-specific kinase antibodies which define a different subgroup of myasthenia. The spectrum of antibodies and their pathophysiological aspects are being elucidated. Even though less common, Lambert Eaton myasthenic syndrome (LEMS) is important to recognize. The abnormality in LEMS is a presynaptic failure to release enough packets of ACh, caused by antibodies to the presynaptic voltage-gated calcium channels. More than half these patients have a small cell carcinoma of lung. Acquired neuromyotonia (NMT) is a condition associated with muscle hyperactivity. Clinical features include muscle stiffness, cramps, myokymia, pseudomyotonia and weakness. The immune mechanisms of acquired NMT relate to loss of voltage-gated potassium channel function. This review will focus on the important recent developments in the immune-mediated disorders of the NMJ.
spellingShingle Vincent, A
Autoimmune disorders of the neuromuscular junction.
title Autoimmune disorders of the neuromuscular junction.
title_full Autoimmune disorders of the neuromuscular junction.
title_fullStr Autoimmune disorders of the neuromuscular junction.
title_full_unstemmed Autoimmune disorders of the neuromuscular junction.
title_short Autoimmune disorders of the neuromuscular junction.
title_sort autoimmune disorders of the neuromuscular junction
work_keys_str_mv AT vincenta autoimmunedisordersoftheneuromuscularjunction