title: The effects of olanzapine and fluphenazine on plasma cortisol, prolactin and muscle rigidity in schizophrenic patients: a double blind study.
abstract: Pharmacotherapy of schizophrenia is associated with the stressful side effects. Muscle rigidity causes distress, discomfort and poor compliance. The aim of the study was to determine the relationship between plasma hormones (cortisol and prolactin/PRL) and muscle rigidity in female schizophrenic patients treated with olanzapine or fluphenazine. In a randomized, double-blind 22-weeks study, 12 patients were treated with olanzapine (5-20 mg/day) and 10 patients received fluphenazine (6-21 mg/day). Treatment with olanzapine moderately decreased, while treatment with fluphenazine significantly increased plasma cortisol levels and muscle rigidity. The marked and moderate increase in plasma PRL levels were found in patients treated with fluphenazine and olanzapine, respectively. The results suggested that olanzapine induced moderate neuroendocrine effects and a reduction in rigidity as compared to fluphenazine treatment.
authors.affiliation: Department of Psychiatry, Clinical Hospital Center Zagreb, Zagreb, Croatia.
authors.forename: M
authors.initials: M
authors.lastname: Jakovljevic
authors.forename: N
authors.initials: N
authors.lastname: Pivac
authors.forename: A
authors.initials: A
authors.lastname: Mihaljevic-Peles
authors.forename: M
authors.initials: M
authors.lastname: Mustapic
authors.forename: M
authors.initials: M
authors.lastname: Relja
authors.forename: D
authors.initials: D
authors.lastname: Ljubicic
authors.forename: D
authors.initials: D
authors.lastname: Marcinko
authors.forename: D
authors.initials: D
authors.lastname: Muck-Seler
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D014150:Antipsychotic Agents / Q000627:therapeutic use*; D001569:Benzodiazepines / Q000627:therapeutic use; D004311:Double-Blind Method; D005260:Female; D005476:Fluphenazine / Q000627:therapeutic use*; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D009127:Muscle Rigidity / Q000139:chemically induced*; D000077152:Olanzapine; D011388:Prolactin / Q000097:blood*; D012559:Schizophrenia / Q000097:blood / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D014150:Antipsychotic Agents; D001569:Benzodiazepines; D011388:Prolactin; D000077152:Olanzapine; D005476:Fluphenazine; D006854:Hydrocortisone