title: Basal and haloperidol-stimulated prolactin in neuroleptic-free men with schizophrenia defined by 11 diagnostic systems.
abstract: Forty-four male, neuroleptic-free, acutely psychotic patients with at least one diagnosis of schizophrenia among 11 diagnostic systems, and 28 healthy controls, underwent measurement of prolactin (PRL) concentrations before and after intravenous administration of haloperidol (0.5 mg). Basal PRL concentrations were lower in the patients with Research Diagnostic Criteria (RDC) DSM-III, Cloninger, and Taylor and Abrams schizophrenias than in controls. Compared with the controls, the PRL response to haloperidol was lower in the patients with schizophrenia defined by all diagnostic systems except those of Schneider and M. Bleuler. Neither basal nor stimulated PRL concentrations were correlated with positive symptoms, but basal PRL was correlated with the Brief Psychiatric Rating Scale (BPRS) depression-related subscore. This study lends further support for the presence of dopaminergic dysfunction in schizophrenia, and demonstrates the advantages and problems in the use of multidiagnostic psychopathological evaluation to categorize a disorder where there is major disagreement among diagnostic systems.
authors.affiliation: National Health and Medical Research Council Schizophrenia Research Unit, Mental Health Research Institute of Victoria, Australia.
authors.forename: N A
authors.initials: NA
authors.lastname: Keks
authors.forename: D L
authors.initials: DL
authors.lastname: Copolov
authors.forename: J
authors.initials: J
authors.lastname: Kulkarni
authors.forename: B
authors.initials: B
authors.lastname: Mackie
authors.forename: B S
authors.initials: BS
authors.lastname: Singh
authors.forename: P
authors.initials: P
authors.lastname: McGorry
authors.forename: R T
authors.initials: RT
authors.lastname: Rubin
authors.forename: A
authors.initials: A
authors.lastname: Hassett
authors.forename: M
authors.initials: M
authors.lastname: McLaughlin
authors.forename: R
authors.initials: R
authors.lastname: van Riel
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D001921:Brain / Q000187:drug effects; D006220:Haloperidol; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D019965:Neurocognitive Disorders / Q000175:diagnosis*; D011388:Prolactin / Q000097:blood*; D011569:Psychiatric Status Rating Scales; D011954:Receptors, Dopamine / Q000187:drug effects; D012559:Schizophrenia / Q000097:blood / Q000175:diagnosis*; D012565:Schizophrenic Psychology
chemical_list: D011954:Receptors, Dopamine; D011388:Prolactin; D006220:Haloperidol