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Related Experiment Videos

Autonomic dysfunction in Machado-Joseph disease.

Tu-Hsueh Yeh1, Chin-Song Lu, Yah-Huei Wu Chou

  • 1First Department of Neurology and Human Molecular Genetic Laboratory, Chang Gung Memorial Hospital, Taipei, Taiwan.

Archives of Neurology
|April 13, 2005
PubMed
Summary
This summary is machine-generated.

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Autonomic dysfunction is common in Machado-Joseph disease patients, affecting functions like voiding and temperature regulation. These issues correlate with disease progression, highlighting the need for further study.

Area of Science:

  • Neurology
  • Autonomic Nervous System Research

Background:

  • Machado-Joseph disease (MJD), an autosomal dominant spinocerebellar ataxia, is linked to trinucleotide repeat expansions.
  • While postmortem studies suggest autonomic nervous system degeneration, detailed clinical and electrophysiological investigations of autonomic dysfunction in MJD patients are lacking.

Purpose of the Study:

  • To investigate the prevalence and characteristics of autonomic dysfunction in Machado-Joseph disease patients.
  • To assess the correlation between autonomic dysfunction and disease progression in MJD.

Main Methods:

  • A study involving 15 genetically confirmed Machado-Joseph disease patients and 34 healthy controls.
  • Utilized detailed questionnaires, R-R interval variation tests (deep breathing, Valsalva maneuver), and sympathetic skin response (SSR) via electrical or magnetic stimulation.

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Main Results:

  • 67% of MJD patients reported multiple autonomic symptoms, primarily voiding problems and thermoregulatory disturbances.
  • Abnormal R-R interval variation was found in 71% of patients, and abnormal SSR in 73% (electrical) and 53% (magnetic) of patients.
  • Autonomic test results correlated with functional disease stage, with electrical stimulation showing the highest diagnostic accuracy.

Conclusions:

  • Autonomic dysfunction is prevalent in Machado-Joseph disease patients.
  • The observed autonomic dysfunction appears linked to the clinical progression of the disease.