Abstract
An alteration of the dopaminergic nigrostriatal system is believed to be the main pathogenetic factor of Parkinson's disease (PD). We report on our initial results on the determination of the post-synaptic dopamine-D2-receptor binding of 123I-IBZM in patients with PD. Drug-native patients showed a significantly higher IBZM binding in the basal ganglia as compared to patients on specific dopaminergic medication. Age, duration of the disease and the severity of the disease do not seem to influence the IBZM-receptor binding. We conclude that 123I-IBZM-SPECT is an extremely useful tool for the evaluation of the functional state of cerebral dopamine-D2-receptors.
MeSH terms
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Aged
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Benzamides*
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Brain / diagnostic imaging*
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Brain / drug effects
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Brain / metabolism
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Color
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Female
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Humans
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Iodine Radioisotopes*
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Levodopa / therapeutic use
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Male
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Middle Aged
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Parkinson Disease / diagnostic imaging*
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Parkinson Disease / drug therapy
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Parkinson Disease / metabolism
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Protein Binding / drug effects
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Pyrrolidines*
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Receptors, Dopamine D2 / drug effects
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Receptors, Dopamine D2 / metabolism*
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Software
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Tomography, Emission-Computed, Single-Photon / instrumentation
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Tomography, Emission-Computed, Single-Photon / methods*
Substances
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Benzamides
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Iodine Radioisotopes
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Pyrrolidines
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Receptors, Dopamine D2
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Levodopa
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3-iodo-2-hydroxy-6-methoxy-N-((1-ethyl-2-pyrrolidinyl)methyl)benzamide