passages.id: PMID-2041591__text
passages.type: abstract
passages.text: Xenobiotic enzyme profiles and Parkinson's disease. 
  Xenobiotic enzymic systems have been studied in Parkinson's disease. Platelet monoamine oxidase-B activity is increased by the use of phenylethylamine but decreased by the use of dopamine as substrate. Enzymes involved with sulfur oxidation and methylation are underactive.
  