Oxytocin, Trauma Disclosure and Intrusions
Effects of a Prolonged Oxytocin Treatment on Intrusions and Amygdala Reactivity in an Analogue Trauma Model
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 1
Kontakter og lokationer
Studiesteder
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Bonn, Tyskland, 53105
- Department of Psychiatry, University of Bonn
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Healthy female volunteers
- Right-handed
Exclusion Criteria:
- Current or past psychiatric disease
- Current or past physical illness
- Psychoactive medication
- Hormonal contraception
- MRI contraindication (e.g. metal in body, claustrophobia)
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Aktiv komparator: Oxytocin (6 days)
Intranasal administration, 24 international units (IU) oxytocin for three days after the first trauma movie exposure and three days after the second trauma movie exposure (24 IU per day)
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Intranasal administration, 24 international units (IU) oxytocin.
Andre navne:
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Aktiv komparator: Oxytocin (3 days)
Intranasal administration, 24 international units (IU) oxytocin for three days after the first trauma movie exposure (24 IU per day) and placebo nasal spray for three days after the second trauma movie exposure
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Intranasal administration, 24 international units (IU) oxytocin.
Andre navne:
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Placebo komparator: Placebo
Placebo nasal spray for six days
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Placebo-næsesprayene indeholder identiske ingredienser bortset fra selve peptidet.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Total number of intrusions following the first trauma movie exposure.
Tidsramme: Three days following the first trauma movie exposure.
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The participants will be asked to complete intrusion diaries at home in the evening of the days 1 to 3. Intrusions will be defined as involuntary recollections relating to film events that appear, apparently spontaneously, in consciousness.
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Three days following the first trauma movie exposure.
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Total number of intrusions following the second trauma movie exposure.
Tidsramme: Three days following the second trauma movie exposure.
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The participants will be asked to complete intrusion diaries at home in the evening of the days 4 to 6. Intrusions will be defined as involuntary recollections relating to film events that appear, apparently spontaneously, in consciousness.
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Three days following the second trauma movie exposure.
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Neural responses to emotional faces in the amygdala.
Tidsramme: Neural activations will be measured with fMRI in an emotional face matching task that lasts 20 min.
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Functional magnetic resonance imaging (fMRI) will be performed to measure blood-oxygen-level dependent signal in response to emotional face stimuli.
The investigators specifically plan to investigate amygdala responses to emotional faces, because pilot data indicate that neural responses to emotional faces in these regions are associated with the total number of intrusions.
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Neural activations will be measured with fMRI in an emotional face matching task that lasts 20 min.
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Neural responses to emotional faces in the prefrontal cortex.
Tidsramme: Neural activations will be measured with fMRI in an emotional face matching task that lasts 20 min.
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Functional magnetic resonance imaging (fMRI) will be performed to measure blood-oxygen-level dependent signal in response to emotional face stimuli.
The investigators specifically plan to investigate prefrontal cortex responses to emotional faces, because pilot data indicate that neural responses to emotional faces in these regions are associated with the total number of intrusions.
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Neural activations will be measured with fMRI in an emotional face matching task that lasts 20 min.
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fMRI resting state data
Tidsramme: Functional data will be acquired for 6 min.
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Participants will be instructed to lie still with open eyes during the resting state measurement and not think of anything in particular.
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Functional data will be acquired for 6 min.
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Trauma disclosure (time spend discussing the movie)
Tidsramme: Six days following the first trauma movie exposure.
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The intrusion diaries will contain a question for how long participants discussed the trauma movie.
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Six days following the first trauma movie exposure.
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Changes in pupil diameter in response to the trauma movie
Tidsramme: 2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Changes in pupil diameter will be measured.
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2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Changes in skin conductance level in response to the trauma movie
Tidsramme: 2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Changes in skin conductance level will be measured.
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2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Changes in respiration rate in response to the trauma movie
Tidsramme: 2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Changes in respiration rate will be measured.
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2 min baseline before the trauma movie and during 15 min of the trauma movie.
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Salivary oxytocin concentrations
Tidsramme: Immediately before the trauma movie, immediately after the trauma movie and 40 min after the trauma movie.
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Saliva samples will be collected before and after the trauma movie to assess changes in oxytocin concentrations.
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Immediately before the trauma movie, immediately after the trauma movie and 40 min after the trauma movie.
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Salivary cortisol concentrations
Tidsramme: Immediately before the trauma movie, immediately after the trauma movie and 40 min after the trauma movie.
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Saliva samples will be collected before and after the trauma movie to assess changes in cortisol concentrations.
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Immediately before the trauma movie, immediately after the trauma movie and 40 min after the trauma movie.
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Questionnaire measurement of mood (PANAS)
Tidsramme: 10 min before and 10 min after the trauma movie.
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Positive and negative affect will be assessed via self-rating questionnaire 'The Positive and Negative Affect Schedule' using a categorical 5 point scale.
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10 min before and 10 min after the trauma movie.
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: René Hurlemann, MD, PhD, University of Bonn
Publikationer og nyttige links
Hjælpsomme links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- PROXY
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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