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Research Article
Effect of vigabatrin on striatal dopamine receptors: evidence in humans for interactions of GABA and dopamine systems.
  1. H A Ring,
  2. M R Trimble,
  3. D C Costa,
  4. M S George,
  5. P Verhoeff,
  6. P J Ell
  1. Raymond Way Neuropsychiatry Research Group, Institute of Neurology, London, UK.

    Abstract

    Vigabatrin is a specific gamma-aminobutyric acid transaminase inhibitor. The clinical use of this drug in the treatment of epilepsy has been sporadically linked to the development of psychosis. Using 123I-IBZM, a specific dopamine D2 receptor ligand and single photon emission tomography (SPET), one month of treatment with vigabatrin was associated with a decrease in specific binding of 123I-IBZM to D2 receptors in the left hemisphere basal ganglia. This change may provide one explanation for the development of psychosis in vulnerable patients.

    https://doi.org/10.1136/jnnp.55.9.758

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