Neurology · 2005
Influence of alcohol on gait in patients with essential tremor.
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Klebe S, Stolze H, Grensing K, Volkmann J, Wenzelburger R, Deuschl G
Аннотация
OBJECTIVE: To study the effect of ethanol on gait in patients with essential tremor (ET).
METHODS: Using a three-dimensional opto-electronic gait analysis system, the authors analyzed gait at free-speed walking, at a given velocity, and during tandem gait. Patients with ET with advanced disease were examined before and after a small oral dose of ethanol. The results of the patients with ET were compared with those from age-matched healthy controls (HCs). The primary outcome criteria were the number of missteps and the ataxia score during tandem gait.
RESULTS: Before alcohol, patients with ET had more missteps and an abnormal ataxia score compared with HCs. The ingestion of alcohol with a mean blood level of 0.45% led to a significant improvement of the ataxia score and the number of missteps. HCs showed a worsening of the ataxia score and an increase of the number of missteps after alcohol, which failed to reach significance.
CONCLUSIONS: Orally administered ethanol improved gait ataxia in patients with essential tremor (ET). This may reflect a reversible effect of ethanol on receptors being involved in the pathology of ET. Ethanol may act via an influence of the inferior olive or directly on alcohol-sensitive gamma-aminobutyric acid receptors within the cerebellum.
METHODS: Using a three-dimensional opto-electronic gait analysis system, the authors analyzed gait at free-speed walking, at a given velocity, and during tandem gait. Patients with ET with advanced disease were examined before and after a small oral dose of ethanol. The results of the patients with ET were compared with those from age-matched healthy controls (HCs). The primary outcome criteria were the number of missteps and the ataxia score during tandem gait.
RESULTS: Before alcohol, patients with ET had more missteps and an abnormal ataxia score compared with HCs. The ingestion of alcohol with a mean blood level of 0.45% led to a significant improvement of the ataxia score and the number of missteps. HCs showed a worsening of the ataxia score and an increase of the number of missteps after alcohol, which failed to reach significance.
CONCLUSIONS: Orally administered ethanol improved gait ataxia in patients with essential tremor (ET). This may reflect a reversible effect of ethanol on receptors being involved in the pathology of ET. Ethanol may act via an influence of the inferior olive or directly on alcohol-sensitive gamma-aminobutyric acid receptors within the cerebellum.