title: Biopterin in Parkinson's disease.
abstract: Tetrahydrobiopterin is an essential co-factor in the natural synthesis of dopamine. Oral tetrahydrobiopterin was given in small doses to four patients with early Parkinson's disease but had no discernible effect.
mesh_terms: D000328:Adult; D001708:Biopterins / Q000031:analogs & derivatives* / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy*; D011897:Random Allocation
chemical_list: D001708:Biopterins; C003402:sapropterin