Abstract
Amantadine suppressed severe levodopa-induced choreic dyskinesia, which developed at initiation of levodopa therapy, in two siblings manifesting dystonia with motor delay phenotype of GTP cyclohydrolase I deficiency caused by compound heterozygous GCH1 mutations. Our finding suggests a beneficial effect of amantadine on this type of dyskinesia frequently observed in relatively severe dopamine-deficient metabolic disorders.
(c) 2004 Movement Disorder Society.
Publication types
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Case Reports
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Research Support, Non-U.S. Gov't
MeSH terms
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Amantadine / therapeutic use*
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Antiparkinson Agents / adverse effects*
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Antiparkinson Agents / therapeutic use*
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Child
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Chorea / complications
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Chorea / drug therapy
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Dopamine Agents / therapeutic use*
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Dyskinesia, Drug-Induced / drug therapy*
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Dyskinesia, Drug-Induced / etiology*
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GTP Cyclohydrolase / genetics*
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Heterozygote
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Humans
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Levodopa / adverse effects*
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Male
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Parkinson Disease / drug therapy*
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Parkinson Disease / genetics*
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Pedigree
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Phenotype
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Point Mutation / genetics*
Substances
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Antiparkinson Agents
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Dopamine Agents
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Levodopa
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Amantadine
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GTP Cyclohydrolase