The action of L(-)-dopa on baroreflexes in Parkinsonism.

DOPA RESPONSIVE DYSTONIA: A CASE REPORT

Dopa responsive dystonia (DRD) is a dystonic syndrome of childhood, usually affecting gait and subsequently developing into parkinsonism with a dramatic therapeutic response to levodopa. At the best of our recollection this is the first case in Iranian medical literature of a 13 year old boy, affected by this interesting, rare and treatable disease which can be easily diagnosed if clinicia...

Reversal of the glabellar reflex in Parkinsonism by L-dopa.

Dopamine Reuptake Inhibitors in Parkinson's Disease: A Review of Nonhuman Primate Studies and Clinical Trials.

Striatal dopamine deficiency is the core feature of the pathology of Parkinson's disease (PD), and dopamine replacement with l-3,4-dihydroxyphenylalanine (l-DOPA) is the mainstay of PD treatment. Unfortunately, chronic l-DOPA administration is marred by the emergence of dyskinesia and wearing-off. Alternatives to l-DOPA for alleviation of parkinsonism are of interest, although none can match th...

Effect of the D3 dopamine receptor partial agonist BP897 [N-[4-(4-(2-methoxyphenyl)piperazinyl)butyl]-2-naphthamide] on L-3,4-dihydroxyphenylalanine-induced dyskinesias and parkinsonism in squirrel monkeys.

Although l-3,4-dihydroxyphenylalanine (L-dopa) is one of the most effective therapies for Parkinson's disease, continued treatment may result in excessive involuntary movements known as L-dopa-induced dyskinesias (LIDs). Because LIDs can become dose-limiting, there is great interest in finding ways to ameliorate or prevent this troubling side effect of L-dopa therapy. It was recently reported t...

Plasma concentrations of L-dopa and 3-methoxydopa and improvement in clinical ratings and motor performance in patients with Parkinsonism treated with L-dopa alone or in combination with amantadine.

Six patients with idiopathic Parkinsonism were treated with a combination of amantadine and L-dopa and after 12 to 24 weeks amantadine was replaced by placebo for a six week period in a double-blind trial. Although there was a tendency for clinical disability ratings and scores on objective ratings of motor skills to deteriorate initially after amantadine removal, there was no significant deter...