Oxytocin and CBSST for People With Schizophrenia
Drug: CBSST + Oxytocin
Drug: CBSST + Placebo
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
|Official Title:||Combined Oxytocin and CBSST for Social Function in People With Schizophrenia|
- Determine if CBSST + oxytocin compared to CBSST + placebo is associated with improved social function. [ Time Frame: 3 years ]Efficacy
- Determine if CBSST + oxytocin compared to CBSST + placebo is associated with increased incidence of side effects. [ Time Frame: 3 years ]
- Determine if CBSST + oxytocin compared to CBSST + placebo is associated with reduced social aversion, including social disinterest and defeatist performance beliefs; increased ability to trust others; and/or improved performance on facial recognition and [ Time Frame: 3 years ]Change Mechanism
|Study Start Date:||January 2014|
|Study Completion Date:||August 2016|
|Primary Completion Date:||August 2016 (Final data collection date for primary outcome measure)|
Experimental: CBSST + oxytocin
Cognitive Behavioral Social Skills Training with adjunct oxytocin nasal spray treatment. Participants will receive 80 IU/day of oxytocin administered intranasally in two doses (40 IU morning and evening).
Drug: CBSST + Oxytocin
The oxytocin dose of 80 IU/day, will be administered in two divided doses: 40 IU in the morning and 40 IU in the evening. Oxytocin will be administered intranasally (10 puffs of the spray, 5 in each nostril at each administration). CBSST groups will occur for an hour twice/week. Nasal spray will be administered an hour prior to the CBSST group.
Placebo Comparator: CBSST + placebo
Cognitive Behavioral Social Skills Training with placebo nasal spray. The placebo nasal spray bottles will be matched in appearance to the oxytocin nasal spray bottles and similarly administered intranasally in two doses (morning and evening).
Drug: CBSST + Placebo
Matching placebo spray will be administered intranasally (10 puffs of the spray, 5 in each nostril at each administration). CBSST groups will occur for an hour twice/week. Nasal spray will be administered an hour prior to the CBSST group.
Other Name: sugar pill
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A NIMH mission priority is the development of new and better interventions, whose focus extends beyond symptom amelioration to the development of interventions that allow people who suffer from severe mental illnesses "to live full and productive lives" (NIMH Strategic Plan, 2008). In particular, the NIMH Strategic Plan notes the importance of translating "research on the biological causes of disorder to inform and develop psychosocial and biomedical interventions that target core features of disease, assess outcomes appropriate to the course of illness under study, and develop study designs that have impact on these features." The current proposal is built upon the observations that: 1) people with schizophrenia are characterized by marked impairments in their social function; 2) current pharmacological treatments do not address these impairments; 3) CBSST has been shown to have modest effects on social function in people with schizophrenia. This limited efficacy may be related to the lack of interest or drive people with schizophrenia have for social interactions; 4) oxytocin plays a critical role in normal social affiliative behavior through a) the reduction of anxiety or social risk aversion, b) the enhancement of motivation for prosocial approach or affiliative behavior, and/or c) increased modulation of the salience and processing of social cues; and 5) decreased oxytocin is associated with social function impairments in people with schizophrenia.
The proposed study is based on the proposition that the use of a pharmacological agent, whose behavioral effects compliment the psychological mechanisms of action of a psychosocial intervention, is an important adaptation of an intervention previously shown to have moderate effects on social function. The addition of oxytocin to CBSST is hypothesized to: 1) enhance the reduction of defeatist performance beliefs by reducing social risk aversiveness and avoidance, which would increase exposure to reinforcement and corrective feedback; 2) enhance social skill acquisition through improvement of proximal social behaviors, e.g. making eye contact and attending to the facial expressions of social partners; and 3) facilitate the translation of learned social skills into community practice through its effects on prosocial attachment behaviors, reduction in social disinterest, and effects on distal behaviors, e.g. initiating conversations and responding to social invitations. Increased social risk taking within and between sessions would expose participants to a greater frequency of positive feedback and success experiences, which would provide evidence to dispute their defeatist beliefs and social disinterest attitudes. In addition, increased social risk taking could improve homework adherence (e.g., practicing talking to people in the community) and engagement in new community activities. These interactive effects would subsequently lead to a substantial improvement in CBSST efficacy for social function. Ultimately, the importance of improved social function is the effect that such improvement would have on overall levels of health and functioning, including vocational outcome.
The proposed study will enable us to collect preliminary data on the acceptability, efficacy, feasibility, and safety of the proposed intervention. In particular, this would be the first study to examine the safety of long-term oxytocin in this population. The study will also provide critical data on the feasibility of recruiting and retaining participants with schizophrenia in a long-term intervention, which combines two different therapeutic modalities: CBSST and oxytocin. If found to be efficacious, feasible, and well-tolerated, we will plan to conduct a larger study, which would include the use of cognitive and imaging biomarkers, to more fully elucidate the mechanism of action of the observed treatment effects. The investigators will address the following specific aims:
Aim #1 (Efficacy): To determine if CBSST + oxytocin compared to CBSST + placebo-oxytocin is associated with improved social function.
Aim #2 (Safety): To determine if CBSST + oxytocin compared to CBSST + placebo-oxytocin is associated with increased incidence of side effects.
Aim #3 (Change Mechanism): To determine if CBSST + oxytocin compared to CBSST + placebo-oxytocin is associated with reduced social aversion, including social disinterest and defeatist performance beliefs; increased ability to trust others; and/or improved performance on facial recognition and memory measures.
Aim #4 (Other Outcomes): To determine if CBSST + oxytocin compared to CBSST + placebo-oxytocin is associated with improved neuropsychological test performance, and/or decreased positive, negative, and/or anxiety/depression symptoms, and clinical global improvement.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01752712
|United States, California|
|University of California, San Diego|
|San Diego, California, United States, 92093|
|United States, Maryland|
|Maryland Psychiatric Research Center|
|Baltimore, Maryland, United States, 21228|
|Principal Investigator:||Robert Buchanan, MD||University of Maryland|