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Related Experiment Videos

Qualitative H-reflex testing in huntington's disease.

G Oepen, W Hillesheimer

    Archiv Fur Psychiatrie Und Nervenkrankheiten
    |January 1, 1981
    PubMed
    Summary

    Huntington's disease patients often show abnormal H-reflexes in leg and arm muscles. This reflex abnormality may appear in asymptomatic offspring, suggesting early central nervous system changes.

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    Area of Science:

    • Neuroscience
    • Neurology
    • Clinical Electrophysiology

    Background:

    • Huntington's disease (HD) is a progressive neurodegenerative disorder.
    • The H-reflex, a measure of spinal cord reflex activity, can be affected in neurological conditions.
    • Investigating H-reflex patterns may reveal early signs of central nervous system dysfunction.

    Purpose of the Study:

    • To investigate the occurrence and characteristics of H-reflexes in patients with Huntington's disease.
    • To assess H-reflex presence in clinically asymptomatic offspring of HD patients.
    • To compare H-reflex findings with healthy controls to identify potential early biomarkers.

    Main Methods:

    • Electrophysiological assessment of H-reflexes in the anterior tibial and thenar muscles.
    • Stimulation of the peroneal and median nerves in 15 HD patients, 8 asymptomatic offspring, and 30 healthy controls.

    Main Results:

    • A significant majority of HD patients (12/15) exhibited H-reflexes in the anterior tibial muscle.
    • H-reflexes were present in 12/13 HD patients after median nerve stimulation.
    • Abnormal H-reflexes were observed in 5/8 clinically inconspicuous offspring, compared to minimal H-reflexes in controls.

    Conclusions:

    • Abnormal H-reflex occurrence is frequent in Huntington's disease patients.
    • The presence of abnormal H-reflexes in asymptomatic offspring suggests a potential early indicator of central reflex disinhibition.
    • H-reflex assessment may serve as a valuable tool for early detection of subclinical neurological changes in individuals at risk for Huntington's disease.

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