Neurology · 2005
"Off" gait freezing and temporal discrimination threshold in patients with Parkinson disease.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Lee Myung-Sik, Kim Hyun-Sook, Lyoo Chul-Hyoung
Аннотация
OBJECTIVE: To investigate the relationship between temporal discrimination threshold (TDT) and "off" period gait freezing (OGF) in patients with fluctuating Parkinson disease (PD).
METHODS: TDT values were measured at the dorsum of the toes in 11 control subjects and 22 patients with PD with a wearing-off phenomenon (16 patients with OGF and 6 patients without OGF).
RESULTS: During the l-dopa "off" period, TDT values increased abnormally in both patient groups but were significantly higher in patients with OGF than in those without OGF. A positive correlation was found between the severity of OGF and TDT values measured by different point stimulation. In patients with OGF, a single dose of l-dopa treatment normalized TDT values and ameliorated OGF.
CONCLUSIONS: Dopa-responsive abnormal discriminative sensory processing may be a possible cause of "off" period gait freezing observed in patients with fluctuating Parkinson disease.
METHODS: TDT values were measured at the dorsum of the toes in 11 control subjects and 22 patients with PD with a wearing-off phenomenon (16 patients with OGF and 6 patients without OGF).
RESULTS: During the l-dopa "off" period, TDT values increased abnormally in both patient groups but were significantly higher in patients with OGF than in those without OGF. A positive correlation was found between the severity of OGF and TDT values measured by different point stimulation. In patients with OGF, a single dose of l-dopa treatment normalized TDT values and ameliorated OGF.
CONCLUSIONS: Dopa-responsive abnormal discriminative sensory processing may be a possible cause of "off" period gait freezing observed in patients with fluctuating Parkinson disease.