An Investigation of the Sleep Architecture and Consequent Cognitive Changes in Olanzapine-Treated Depressed Patients
OBJECTIVES:
Primary Objective:
To assess the objective (polysomnographic) changes in sleep quality before and after introduction of olanzapine in treatment of patients with depression.
Secondary Objectives:
To assess the subjective changes in sleep quality parameters before and at different stages after introduction of olanzapine in treatment, longitudinally, and to correlate these changes with measures of illness severity and changes in cognition.
STUDY DESIGN:
Prospective, double blind, randomized polysomnographic (PSG) study of patients before and after treatment with olanzapine.
PSG recordings will be done three times throughout the study: before starting olanzapine augmentation (baseline), at day 3 to 5 (acute) and day 28 to 31 (chronic). PSG will be completed at patients' homes with a portable PSG. Psychiatric scales, subjective sleep quality scales, and cognition measurements will be completed at each visit.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Phase 4
Kontakte und Standorte
Studienorte
-
-
Ontario
-
Kingston, Ontario, Kanada, K7L 4X3
- Queen's University, Providence Care-Mental Health Services
-
-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- A diagnosis of major depressive disorder or bipolar disorder type 1, 2 or NOS by Diagnostic and Statistical Manual of Mental Disorders- Fourth Edition (DSM-IV)
- Current depressive episode with a HAMD-17 of > 15
- Males or females over age18 years (yrs)
- Inpatients or outpatients
- Female patients of childbearing potential must be using a reliable method of contraception and have a negative urine human chorionic gonadotropin (HCG) test at enrollment
- Able to understand and comply with the requirements of the study
- Provision of written informed consent
Exclusion Criteria:
- Current manic, hypomanic or mixed episode, with YMRS > 12
- Current or past diagnosis of schizophrenia and dementia
- Pregnant women, or women in childbearing age, not willing to use appropriate contraception or women currently nursing
- Patient on any other antipsychotic medication
- Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others
- Known intolerance or lack of response to olanzapine, as judged by the investigator
- Benzodiazepines and all other sleep-aids must be discontinued prior to participation in the study if they have not been at a stable dosage for the 4 weeks previous to entry into the study
- No change to the current medication regime (excluding discontinuation of sleep aids and antipsychotic medications) is allowed 4 weeks prior to the first PSG reading
- Administration of a depot antipsychotic injection within two dosing interval (for the depot) before randomization
- Substance or alcohol dependence at enrolment or in the last three months (except for caffeine or nicotine dependence), as defined by DSM-IV criteria
- Serious, unstable or inadequately treated medical illness as judged by the investigator
- History of epilepsy or uncontrolled seizures
- Involvement in the planning and conduct of the study
- Previous enrolment in the present study
- Participation in another drug trial within 4 weeks prior enrolment into this study or longer in accordance with local requirements
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Verdreifachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
|
Experimental: 1
|
Olanzapine will be taken once daily at 6pm for 1 month.
Dosing will be titrated up to 5mg and then changed as clinically indicated.
|
|
Placebo-Komparator: 2
|
An inactive form of the treatment will be taken once daily at 6pm for 1 month.
|
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
|
Sleep quality as measured by overnight PSG, defined as the change in time spent in slow wave sleep.
Zeitfenster: 3 days after baseline and 1 month after baseline
|
3 days after baseline and 1 month after baseline
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
|
Sleep measures: time in bed, total sleep time, sleep period time, percentage of sleep stages (stage 1, stage 2, slow wave sleep, REM sleep) of sleep period time, sleep latency to stage 1 and 2, REM latency, number of awakenings.
Zeitfenster: measure taken at baseline, 3 days after baseline, and 1 month after baseline
|
measure taken at baseline, 3 days after baseline, and 1 month after baseline
|
|
Respiratory events (during PSG): obstructive sleep apneas, mixed apneas, central apneas, total apneas, obstructive hypopneas, mixed hypopneas, central hypopneas, total hypopneas, and apneas + hypopneas (AHI), oxygen saturation, and heart rate.
Zeitfenster: Baseline, 3 days and 1 month after baseline
|
Baseline, 3 days and 1 month after baseline
|
|
Subjective sleep experience: visual analogue scale, sleep diary, Epworth Sleep Scale and Pittsburgh Sleep Quality Index.
Zeitfenster: Baseline, 3 days and 1 month after baseline
|
Baseline, 3 days and 1 month after baseline
|
|
Changes in weight and blood glucose will be monitored.
Zeitfenster: At baseline and 1 month
|
At baseline and 1 month
|
|
Cognition: CANTAB scores
Zeitfenster: Baseline, 3 days and 1 month after baseline
|
Baseline, 3 days and 1 month after baseline
|
|
Illness severity: HDRS-17, MADRS, CGI and HamA
Zeitfenster: Baseline, 3 days and 1 month after baseline
|
Baseline, 3 days and 1 month after baseline
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Ermittler
Ermittler
- Hauptermittler: Roumen Milev, M.D., Queen's University, Department of Psychiatry
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Verhaltenssymptome
- Psychische Störungen
- Pathologische Prozesse
- Stimmungsschwankungen
- Bipolare und verwandte Störungen
- Depression
- Depression
- Erkrankung
- Bipolare Störung
- Physiologische Wirkungen von Arzneimitteln
- Neurotransmitter-Agenten
- Molekulare Mechanismen der pharmakologischen Wirkung
- Depressiva des zentralen Nervensystems
- Autonome Agenten
- Agenten des peripheren Nervensystems
- Antiemetika
- Magen-Darm-Mittel
- Antipsychotische Mittel
- Beruhigende Agenten
- Psychopharmaka
- Serotonin-Aufnahmehemmer
- Hemmer der Aufnahme von Neurotransmittern
- Membrantransportmodulatoren
- Serotonin-Agenten
- Olanzapin
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- PSIY-263-07
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