title: Tyrosine hydroxylase cofactor (tetrahydrobiopterin) in parkinsonism.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000818:Animals; D000978:Antiparkinson Agents; D001708:Biopterins / Q000031:analogs & derivatives / Q000032:analysis* / Q000134:cerebrospinal fluid / Q000627:therapeutic use; D001923:Brain Chemistry; D004353:Drug Evaluation, Preclinical; D000882:Haplorhini; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy / Q000378:metabolism*; D011621:Pteridines / Q000032:analysis*; D051381:Rats
chemical_list: D000978:Antiparkinson Agents; D011621:Pteridines; D001708:Biopterins; C003402:sapropterin