title: Effect of tetrahydrobiopterin and 5-hydroxytryptophan on hereditary progressive dystonia with marked diurnal fluctuation: a suggestion of the serotonergic system involvement.
abstract: A daughter and her mother developed hereditary progressive dystonia with marked diurnal fluctuation (HPD) at the age of 4 and 34, respectively. L-Dopa, tetrahydrobiopterin (BH4) or 5-hydroxytryptophan (5-HTP) was orally administered to them. L-Dopa cured completely their symptoms. 5-HTP as well as BH4 improved their symptoms, especially dystonic movements. Biopterin and 5-hydroxyindoleacetic acid concentrations in CSF increased during BH4 medication. These findings suggest that the serotonergic system of the central nervous system might play some role in the pathogenesis of dystonia in HPD.
authors.affiliation: Department of Pediatrics, Akita University School of Medicine, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Ishida
authors.forename: G
authors.initials: G
authors.lastname: Takada
authors.forename: Y
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: I
authors.initials: I
authors.lastname: Toyoshima
authors.forename: K
authors.initials: K
authors.lastname: Takai
mesh_terms: D006916:5-Hydroxytryptophan / Q000627:therapeutic use*; D000328:Adult; D001708:Biopterins / Q000031:analogs & derivatives* / Q000097:blood / Q000134:cerebrospinal fluid / Q000627:therapeutic use; D002648:Child; D002940:Circadian Rhythm; D004421:Dystonia / Q000188:drug therapy* / Q000235:genetics; D005260:Female; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use
chemical_list: D001708:Biopterins; D007980:Levodopa; D006916:5-Hydroxytryptophan; C003402:sapropterin