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Clinical Trial Summary

This study will use a randomized, controlled, double-blind design involving the administration of intranasal oxytocin (INOT) or placebo to adults with anorexia nervosa, restricting subtype and age-matched controls prior to neuroimaging to assess the impact on frontolimbic brain activity in response to socioemotional stimuli as well as eating behavior in a test meal paradigm.


Clinical Trial Description

The primary objective of this investigation is to determine the impact of oxytocin (OT), a peptide hormone that influences social affiliation, on socioemotional neural circuitry and eating disorder behavior in anorexia nervosa (AN). Because socioemotional processing deficits appear to play a key role in AN, OT is implicated as a potential biological mechanism by which eating disorder behavior (e.g., restrictive eating) is maintained. Used as a probe, intranasal oxytocin (INOT) provides an innovative method for examining the short-term impact of OT on socioemotional neural processing disturbances and eating disorder behavior in AN. The proposed study tests a theoretical model of the role of OT in the maintenance of AN by using an INOT probe to determine, and potentially alter, neurobiological responses to socioemotional stimuli. Specifically, this study will use a randomized, controlled, double-blind design involving the administration of INOT or placebo to adults with AN restricting subtype and age-matched controls prior to neuroimaging to assess the impact on frontolimbic brain activity in response to socioemotional stimuli. The potential impact of INOT on restrictive eating will also be assessed in a subsequent test meal. We predict that for participants with AN, INOT, but not placebo, will normalize frontolimbic activation in response to social reward stimuli and prefrontal activation in response to social threat stimuli. In addition, the investigators predict that AN participants will display reduced restrictive eating in a test meal paradigm following INOT (but not placebo) administration. Finally, investigators predict that changes in restrictive eating following INOT administration will be mediated by altered frontolimbic responding to socioemotional cues. This investigation will provide an essential link uniting the data supporting the importance of socioemotional processing deficits in AN with the emerging role of INOT in altering the neural circuits involved in social behavior to test an innovative neurobiological maintenance model of AN. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03414112
Study type Interventional
Source University of Minnesota
Contact
Status Completed
Phase Early Phase 1
Start date September 25, 2018
Completion date April 30, 2021

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