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L-tryptophan-carbidopa trial in patients with long-standing progressive myoclonus epilepsy.

Abstract
Eleven patients with long-standing progressive myoclonus epilepsy, PME, and age- and sex-matched epileptic controls received L-tryptophan (L-Trp) 100 mg/kg body weight combined with carbidopa in addition to their usual anticonvulsant regimen. During six weeks of the trial an improvement in activities of daily living and a decrease of action myoclonus was noted in the PME patients. The frequency of seizures compared with the past year decreased significantly in the PME patients, but not in the epileptic controls. Changes in the EEGs of the PME patients were scant, but a slight decrease was noted in myoclonic spikes. Both plasma Trp and platelet 5-HT increased significantly and at least as much as in epileptic controls. 5-HIAA and HVA concentrations in the CSF of the PME patients increased significantly during the trial. The results support previous findings concerning Trp treatment in PME, and longer trials with Trp + carbidopa could be of value in this disease.
AuthorsE Leino, E MacDonald, M M Airaksinen, P J Riekkinen, H Salo
JournalActa neurologica Scandinavica (Acta Neurol Scand) Vol. 64 Issue 2 Pg. 132-41 (Aug 1981) ISSN: 0001-6314 [Print] Denmark
PMID6172951 (Publication Type: Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Serotonin
  • Hydroxyindoleacetic Acid
  • Tryptophan
  • Carbidopa
  • Homovanillic Acid
Topics
  • Blood Platelets (analysis)
  • Carbidopa (administration & dosage)
  • Clinical Trials as Topic
  • Drug Therapy, Combination
  • Epilepsies, Myoclonic (drug therapy, metabolism)
  • Female
  • Homovanillic Acid (cerebrospinal fluid)
  • Humans
  • Hydroxyindoleacetic Acid (cerebrospinal fluid)
  • Male
  • Serotonin (blood)
  • Tryptophan (administration & dosage, blood)

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