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Long Term Response to Levodopa in Parkinson's Disease
Harsh V Gupta1, Kelly E Lyons1, Nathaniel Wachter1
1Department of Neurology, Kansas University Medical Center, Kansas City, KS, USA.
Journal of Parkinson'S Disease
|June 18, 2019
Summary
Levodopa remains effective for Parkinson's disease motor symptoms even after many years of treatment. This study found significant improvements in motor and daily living scores regardless of disease duration.
Area of Science:
- Neurology
- Neuroscience
- Pharmacology
Background:
- Levodopa is the primary treatment for Parkinson's disease (PD) motor symptoms.
- A debate exists regarding levodopa's long-term efficacy.
Purpose of the Study:
- To evaluate the sustained effectiveness of levodopa in Parkinson's disease patients over extended periods.
Main Methods:
- Assessed levodopa response in 361 PD patients undergoing Deep Brain Stimulation (DBS) surgery evaluation.
- Categorized patients into four groups based on disease duration (0-5, 6-10, 11-15, ≥16 years).
- Measured changes in Unified Parkinson's Disease Rating Scale (UPDRS) motor and Activities of Daily Living (ADL) scores.
Main Results:
- All patient groups showed significant improvement in UPDRS motor and ADL scores post-levodopa challenge.
- This improvement was observed across all disease duration categories.
Conclusions:
- Levodopa's effectiveness in improving motor and ADL scores is maintained in Parkinson's disease patients.
- The positive response to levodopa does not diminish with longer disease duration in this cohort.