title: CSF levels of diazepam-binding inhibitor correlate with REM latency in schizophrenia, a pilot study.
abstract: CSF diazepam-binding inhibitor-like immunoreactivity (DBI-LI) and polysomnography were studied in 28 drug-free male schizophrenic (DSM-III-R) patients. They underwent a three-night polysomnography evaluation and a lumbar puncture. CSF DBI-LI correlated positively with REM latency, the REM latency/2d nonREM period ratio and stage-4% sleep, and negatively with stage-1% sleep. CSF DBI-LI did not correlate significantly with duration of sleep or sleep latency. CSF DBI-LI during haloperidol treatment did not correlate significantly with sleep EEG measures. The results of this first study of the relationship between endogenous DBI and sleep in humans suggest that physiological effects of DBI other than interactions with the BZD/GABAA receptor complex may explain its positive effects on sleep. However, the absence of similar sleep data in normal subjects precludes us from establishing a specific relationship between DBI and sleep in schizophrenia.
authors.affiliation: Western Psychiatric Institute and Clinic, University of Pittsburgh, School of Medicine, PA.
authors.forename: D P
authors.initials: DP
authors.lastname: van Kammen
authors.forename: A
authors.initials: A
authors.lastname: Guidotti
authors.forename: T
authors.initials: T
authors.lastname: Neylan
authors.forename: P
authors.initials: P
authors.lastname: Guarneri
authors.forename: M E
authors.initials: ME
authors.lastname: Kelley
authors.forename: J
authors.initials: J
authors.lastname: Gurklis
authors.forename: M W
authors.initials: MW
authors.lastname: Gilbertson
authors.forename: J L
authors.initials: JL
authors.lastname: Peters
authors.forename: E
authors.initials: E
authors.lastname: Costa
mesh_terms: D000328:Adult; D002352:Carrier Proteins / Q000134:cerebrospinal fluid* / Q000187:drug effects; D026261:Diazepam Binding Inhibitor; D006220:Haloperidol / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D017286:Polysomnography; D011569:Psychiatric Status Rating Scales; D011930:Reaction Time / Q000187:drug effects / Q000502:physiology*; D011963:Receptors, GABA-A / Q000187:drug effects / Q000502:physiology; D012559:Schizophrenia / Q000188:drug therapy / Q000503:physiopathology*; D012565:Schizophrenic Psychology; D012894:Sleep Stages / Q000187:drug effects / Q000502:physiology; D012895:Sleep, REM / Q000187:drug effects / Q000502:physiology*
chemical_list: D002352:Carrier Proteins; D026261:Diazepam Binding Inhibitor; D011963:Receptors, GABA-A; D006220:Haloperidol