title: Therapeutic efficacy of tetrahydrobiopterin in Parkinson's disease.
mesh_terms: D000368:Aged; D000928:Antidepressive Agents; D000978:Antiparkinson Agents; D001708:Biopterins / Q000031:analogs & derivatives / Q000627:therapeutic use*; D001921:Brain / Q000201:enzymology; D003866:Depressive Disorder / Q000188:drug therapy; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy* / Q000201:enzymology; D010651:Phenylalanine Hydroxylase / Q000378:metabolism; D010661:Phenylketonurias / Q000188:drug therapy; D011621:Pteridines / Q000627:therapeutic use*
chemical_list: D000928:Antidepressive Agents; D000978:Antiparkinson Agents; D011621:Pteridines; D001708:Biopterins; D010651:Phenylalanine Hydroxylase; C003402:sapropterin