Neurol India Home 

Year : 2008  |  Volume : 56  |  Issue : 3  |  Page : 305--313

Autoimmune disorders of the neuromuscular junction

Angela Vincent 
 Department of Clinical Neurology, Neurosciences Group, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford OX3 9DS, United Kingdom

Correspondence Address:
Angela Vincent
Neurosciences Group, Department of Clinical Neurology, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford OX3 9DS
United Kingdom

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.

How to cite this article:
Vincent A. Autoimmune disorders of the neuromuscular junction.Neurol India 2008;56:305-313

How to cite this URL:
Vincent A. Autoimmune disorders of the neuromuscular junction. Neurol India [serial online] 2008 [cited 2023 Mar 23 ];56:305-313
Available from:;year=2008;volume=56;issue=3;spage=305;epage=313;aulast=Vincent;type=0