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Related Experiment Videos

Central autonomic disorders

E E Benarroch1, F L Chang

  • 1Department of Neurology, Mayo Clinic, Rochester, MN 55905.

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society
|January 1, 1993
PubMed
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Central autonomic dysfunction, often seen in multiple system atrophy (MSA) and idiopathic Parkinson's disease (IPD), involves neuronal loss. Differentiating these conditions from primary autonomic failure (PAF) and secondary causes is crucial for diagnosis.

Area of Science:

  • Neuroscience
  • Autonomic Nervous System Disorders
  • Neurology

Background:

  • Central autonomic dysfunction stems from primary (degenerative) or secondary causes.
  • Autonomic failure (AF) is a key feature of multiple system atrophy (MSA) and idiopathic Parkinson's disease (IPD), linked to neuronal loss in intermediolateral cell columns.
  • Autonomic disorders can manifest as failure (hypoactivity) or hyperactivity, affecting various bodily functions.

Purpose of the Study:

  • To delineate the characteristics of autonomic failure in MSA and IPD.
  • To differentiate MSA/AF and IPD/AF from primary autonomic failure (PAF) and secondary autonomic disorders.
  • To identify key clinical and biomarker distinctions for accurate diagnosis.

Main Methods:

  • Comparative analysis of clinical presentations and autonomic testing in MSA, IPD, and PAF.

Related Experiment Videos

  • Examination of cerebrospinal fluid (CSF) neurotransmitter markers and hormonal responses (vasopressin, ACTH/beta-endorphin).
  • Review of secondary causes of autonomic dysfunction, including lesions in central nervous system autonomic networks.

    • Main Results:

    • MSA-associated autonomic failure is severe and progressive, with distinct respiratory disturbances (stridor, sleep apnea).
    • MSA/AF differs from PAF by preserved sympathetic activity, reduced CSF markers, and altered hormonal responses.
    • IPD-associated autonomic failure is generally less severe than in MSA; specific markers may distinguish MSA from IPD.
    • Secondary autonomic disorders result from diverse neurological lesions and can cause hypo- or hyperactivity.

    Conclusions:

    • Autonomic failure is a significant manifestation of neurodegenerative diseases like MSA and IPD.
    • Distinguishing between MSA/AF, IPD/AF, PAF, and secondary autonomic disorders relies on a combination of clinical, autonomic, and biomarker assessments.
    • Accurate differentiation is essential for appropriate management and understanding of autonomic nervous system pathology.