1. Neural Responses to Fluoxetine in Youths with Disruptive Behavior and Trauma Exposure: A Pilot Study
- Author
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Eun Ji Kim, Ji Woo Suk, Yongmin Chang, Ellen Leibenluft, Harma Meffert, Soonjo Hwang, James R. Blair, Christopher J. Kratochvil, and Un-Sun Chung
- Subjects
Male ,Adolescent ,Ventromedial prefrontal cortex ,Prefrontal Cortex ,Pilot Projects ,Serotonergic ,ventromedial prefrontal cortex ,insula ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Pharmacology (medical) ,Exposure to Violence ,Problem Behavior ,Fluoxetine ,business.industry ,Disruptive behavior ,fluoxetine ,Original Articles ,Amygdala ,Magnetic Resonance Imaging ,030227 psychiatry ,Psychiatry and Mental health ,medicine.anatomical_structure ,trauma ,Attention Deficit and Disruptive Behavior Disorders ,Pediatrics, Perinatology and Child Health ,Female ,business ,Neuroscience ,Insula ,030217 neurology & neurosurgery ,disruptive behavior disorder ,medicine.drug - Abstract
Objective: A preliminary investigation of the impact of a serotonergic agent (fluoxetine) on symptom profile and neural response in youths with disruptive behavior disorders (DBDs) and a history of trauma exposure. Methods: There were three participant groups: (i) Youths with DBDs and trauma exposure who received fluoxetine treatment for 8 weeks (n = 11); (ii) A matched group of youths with DBDs and trauma exposure who received routine regular follow-up in an outpatient clinic (n = 10); and (iii) Typically developing youths (n = 18). All participants conducted an expression processing functional magnetic resonance imaging task twice, 8 weeks apart: (pretreatment and post-treatment for youths with DBDs). Results: Youths with DBDs and trauma exposure who received fluoxetine treatment compared to the other two groups showed: (i) significant improvement in externalizing, oppositional defiant disorder, irritability, anxiety-depression, and trauma-related symptoms; (ii) as a function of fearful expression intensity, significantly decreased amygdala response and increased recruitment of regions implicated in top-down attention control (insula cortex, inferior parietal lobule, and postcentral gyrus) and emotional regulation (ventromedial prefrontal cortex [vmPFC]); and (iii) correlation between DBD/irritability symptom improvement and increased activation of top-down attention control areas (inferior parietal lobule, insula cortex, and postcentral gyrus) and an emotion regulation area (vmPFC). Conclusions: This study provides preliminary evidence that a serotonergic agent (fluoxetine) can reduce disruptive behavior and mood symptoms in youths with DBDs and trauma exposure and that this may be mediated by enhanced activation of top-down attention control and emotion regulation areas (inferior parietal lobule, insula cortex, and vmPFC).
- Published
- 2021