Deprenyl improves visuo-motor control in early Parkinsonism

Hocherman S, Levin G, Giladi N, Youdim MB

Department of Physiology, 
Faculty of Medicine,
 Technion, Haifa, Israel.
J Neural Transm Suppl 1998;52:63-9


Deprenyl is a potent MAO-B inhibitor which is commonly prescribed for treatment of parkinsonism.  Despite prevalent use its effects on the symptoms and course of Parkinson's disease (PD) are still debated. The present study was therefore undertaken in order to measure quantitatively changes in visuo-motor control (VMC), consequent to deprenyl monotherapy in early PD.  Previous work from our laboratory has shown typical VMC deterioration in PD patients, that correlates with disease severity. Thus, measurements of such changes provides a sensitive tool with which the symptomatic effects of drug treatment can be assessed quantitatively.  Fourteen newly diagnosed, PD patients with light symptoms were studied. The VMC of all patients was tested after the first neurological examination, before drug treatment commenced.  A second test was done after 30 days of treatment with deprenyl at a dose of 2.5 mg/day.  Following this test, dosage was increased to 10 mg/day and a third VMC test was given after 30 more days of treatment. Our results show significant improvement in VMC functions following 30 days of 2.5 mg/day treatment and a continuing improvement after the next 30 days of 10 mg/day treatment. This improvement pertains mainly to directional control of self initiated movements and is smaller for movements that are guided externally. We conclude that deprenyl monotherapy has a clear symptomatic beneficial effect for patients with early PD.

Parkinson's research / abstracts

 1.    Deprenyl  effect on cognitive functions in early Parkinson's 
Deprenyl  stimulates biosynthesis of cytokines interleukin-1 & 6
 4.    Deprenyl  effect of MAO-B inhibitors on MPP+ toxicity
 5.    Deprenyl  modulates the decline of the dopamineric system
 6.    Deprenyl 
possible mechanisms of action in Parkinson's 
7.    Deprenyl  pharmacological basis of the beneficial effects
Deprenyl  improves visuo-motor control in early Parkinsonism
Deprenyl  delays disability in Parkinsonian patients
Deprenyl  management of early Parkinson's disease
Deprenyl  delays the onset of disability in Parkinsonian patients
Deprenyl  and tocopherol antioxidative therapy of Parkinsonism

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