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[Autoimmune autonomic ganglionopathy].

Shunya Nakane1

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Rinsho Shinkeigaku = Clinical Neurology
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Autoimmune autonomic ganglionopathy (AAG) involves widespread autonomic failure, often linked to antibodies against nicotinic acetylcholine receptors (AChR). This review explores recent clinical advances for AAG and related disorders.

Keywords:
acetylcholine receptor (AChR)anti-ganglionic acetylcholine receptor (gAChR) antibodyautoimmune autonomic ganglionopathy (AAG)autoimmune gastrointestinal dysmotility (AGID)autonomic dysfunction

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Area of Science:

  • Neurology
  • Immunology
  • Gastroenterology

Background:

  • Autoimmune autonomic ganglionopathy (AAG) is an acquired immune-mediated disorder causing widespread autonomic failure.
  • Autoantibodies against neuronal nicotinic acetylcholine receptors (AChR) are found in about half of AAG patients, potentially disrupting synaptic transmission in autonomic ganglia.
  • AAG can present with diverse autonomic symptoms and extra-autonomic manifestations, including neurological, endocrine, and oncological conditions.

Purpose of the Study:

  • To review recent progress in the clinical approaches for Autoimmune Autonomic Ganglionopathy (AAG).
  • To highlight the role of autoantibodies in AAG and related disorders.
  • To discuss current clinical practices and emerging therapeutic strategies for AAG.

Main Methods:

  • Literature review focusing on recent clinical studies and case reports related to AAG.
  • Analysis of the role of autoantibodies, particularly anti-neuronal nicotinic acetylcholine receptor (AChR) antibodies.
  • Examination of clinical manifestations, diagnostic approaches, and therapeutic outcomes in AAG.

Main Results:

  • Autoantibodies against ganglionic AChR are key mediators of autonomic dysfunction in a significant subset of AAG patients.
  • Extra-autonomic manifestations are common, indicating a systemic autoimmune process.
  • Combined immunomodulatory therapy shows benefit in most AAG patients, though responses can vary.

Conclusions:

  • AAG is a complex autoimmune disorder with significant clinical heterogeneity.
  • Understanding the role of autoantibodies is crucial for diagnosis and management of AAG.
  • Further research into targeted therapies may improve outcomes for AAG patients with limited treatment response.