title: d-cycloserine adjuvant therapy to conventional neuroleptic treatment in schizophrenia: an open-label study.
abstract: D-cycloserine, a partial agonist at the strychnine-insensitive glycine site of the NMDA receptor complex, was tested as adjuvant treatment to conventional neuroleptics in chronic schizophrenic volunteers. The drug was administered, o.a.d., at the daily dose of 250 mg for six weeks. Mental status outcome measures were completed at the end of each week of treatment. The major finding was a deterioration of the patients' clinical condition, specifically of their psychotic symptoms. These preliminary results are discussed among others in view of d-cycloserine pharmacologic properties and recent findings on the interaction between NMDA agonists and dopamine system. This study, finally, suggests the need for a controlled dose-finding trial to establish the activity and a therapeutic "window" of this drug in schizophrenia.
authors.affiliation: Department of Neuropsychiatric Sciences, H. S. Raffaele, University of Milan, School of Medicine, Italy.
authors.forename: N G
authors.initials: NG
authors.lastname: Cascella
authors.forename: F
authors.initials: F
authors.lastname: Macciardi
authors.forename: C
authors.initials: C
authors.lastname: Cavallini
authors.forename: E
authors.initials: E
authors.lastname: Smeraldi
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000627:therapeutic use; D010054:Brief Psychiatric Rating Scale; D003523:Cycloserine / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use*; D004298:Dopamine / Q000502:physiology; D004347:Drug Interactions; D005260:Female; D006801:Humans; D008297:Male; D010622:Phencyclidine / Q000009:adverse effects / Q000037:antagonists & inhibitors / Q000494:pharmacology; D011605:Psychoses, Substance-Induced / Q000209:etiology / Q000503:physiopathology; D018009:Receptors, Glycine / Q000819:agonists* / Q000502:physiology; D016194:Receptors, N-Methyl-D-Aspartate / Q000819:agonists* / Q000502:physiology; D012559:Schizophrenia / Q000188:drug therapy*; D012565:Schizophrenic Psychology
chemical_list: D014150:Antipsychotic Agents; D018009:Receptors, Glycine; D016194:Receptors, N-Methyl-D-Aspartate; D003523:Cycloserine; D010622:Phencyclidine; D004298:Dopamine