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Related Concept Videos

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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
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The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
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Autoimmune Autonomic Neuropathy: From Pathogenesis to Diagnosis.

Shunya Nakane1, Haruki Koike2, Tomohiro Hayashi1

  • 1Department of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.

International Journal of Molecular Sciences
|February 24, 2024
PubMed
Summary

Autoimmune autonomic ganglionopathy (AAG) involves autonomic failure due to autoantibodies. Accurate diagnosis requires differentiating AAG from other neuropathies and conditions with similar symptoms.

Keywords:
autoantibodiesautoimmune autonomic ganglionopathyextra-autonomic manifestationsganglionic acetylcholine receptorimmunotherapy

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Area of Science:

  • Neurology
  • Immunology
  • Autonomic Nervous System Disorders

Background:

  • Autoimmune autonomic ganglionopathy (AAG) is characterized by autonomic failure linked to ganglionic acetylcholine receptor (gAChR) autoantibodies.
  • Distinguishing AAG from other neuropathies with autonomic dysfunction is crucial for diagnosis, necessitating consideration of various clinical and laboratory factors.

Purpose of the Study:

  • To provide a comprehensive review of AAG's clinical features.
  • To highlight key differences between AAG and other neuropathies presenting with autonomic symptoms.
  • To emphasize the importance of differential diagnosis for accurate patient management.

Main Methods:

  • Review of clinical features, including onset (acute vs. chronic) and disease progression.
  • Analysis of autonomic and extra-autonomic symptoms.
  • Comparison of clinical and laboratory findings with other immune-mediated neuropathies and non-neuropathic conditions.

Main Results:

  • AAG diagnosis relies on identifying gAChR autoantibodies and careful clinical evaluation.
  • Differentiating AAG from conditions like acute autonomic sensory neuropathy requires understanding subtle clinical and laboratory distinctions.
  • Similarities in symptoms with postural orthostatic tachycardia syndrome, chronic fatigue syndrome, and long COVID necessitate thorough differential diagnosis.

Conclusions:

  • Accurate diagnosis of AAG involves detailed history taking, symptom analysis, and differentiating it from various neuropathic and non-neuropathic disorders.
  • Understanding the distinct clinical course, presentation, and laboratory findings is essential for differentiating AAG.
  • Despite diagnostic challenges, efforts to differentiate AAG from other conditions are critical for appropriate treatment and patient outcomes.