Ding, C and Ganesvaran, G and Alty, JE and Clissold, BG and McColl, CD and Reardon, KA and Schiff, M and Srikanth, V and Kempster, PA, Study of Levodopa Response in Parkinson's disease: Observations on rates of motor progression, Movement Disorders, 31, (4) pp. 589-592. ISSN 0885-3185 (2016) [Refereed Article]
© 2016 International Parkinson and Movement Disorder Society
METHODS: The methods for this study comprised prospective defined off state measurements of the levodopa response at 3-year intervals over a mean 13.3-year period in 34 patients enrolled before treatment initiation.
RESULTS: Despite worsening of on and off scores, the magnitude of the l-dopa short-duration response is maintained as the disease progresses. A linear mixed-effects regression analysis of off phase motor scores showed a yearly deterioration of 2.3% of the maximum disability score. Greater motor disability at the commencement of treatment was an independent predictor of faster progression. Demented patients had worse motor function than those without dementia (P = 0.02), and motor deficit appeared to accelerate toward the end of the disease course in patients who had died.
CONCLUSIONS: These observations should inform clinical trial design for drugs with possible neuroprotective properties. © 2016 International Parkinson and Movement Disorder Society.
|Item Type:||Refereed Article|
|Keywords:||Parkinson's disease, dementia, levodopa, natural history|
|Research Division:||Medical and Health Sciences|
|Research Field:||Neurology and Neuromuscular Diseases|
|Objective Group:||Clinical Health (Organs, Diseases and Abnormal Conditions)|
|Objective Field:||Nervous System and Disorders|
|Author:||Srikanth, V (Dr Velandai Srikanth)|
|Web of Science® Times Cited:||4|
|Deposited By:||Menzies Institute for Medical Research|
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