SSRI Treatment Response Prediction in Depression Based on Brain Activation by Emotional Stimuli

Introduction: The prediction of antidepressant treatment response may improve outcome. Functional magnetic resonance imaging (fMRI) of emotion processing in major depressive disorder (MDD) may reveal regional brain function serving as predictors of response to treatment with selective serotonin reuptake inhibitor (SSRI). Methods: We examined the association between pre-treatment neural activity by means of fMRI during the perception of emotional stimuli in 22 patients with MDD and the treatment outcome after 6 weeks' medication with an SSRI. A whole brain correlation analysis with Beck Depression Inventory (BDI) change between pre- to post-treatment was conducted to identify neural regions associated with treatment response. Results: During the perception of positive stimuli, responders were characterized by more activation in posterior cingulate cortex (PCC), medial prefrontal cortex, and thalamus as well as middle temporal gyrus. During perception of negative stimuli, PCC, and pregenual anterior cingulate cortex showed the highest correlation with treatment response. Furthermore, responders exhibited higher activation to emotional stimuli than to neutral stimuli in all the above-mentioned regions, while non-responders demonstrated an attenuated neural response to emotional compared to neutral stimuli. Conclusion: Our data suggest that the activity of distinct brain regions is correlated with SSRI treatment outcome and may serve as treatment response predictor. While some regions, in which activity was correlated with treatment response, can be assigned to networks that have been implied in the pathophysiology of depression, most of our regions of interest could also be matched to the default mode network (DMN). Higher DMN activity has been associated with increased rumination as well as negative self-referential processing in previous studies. This may suggest our responders to SSRI to be characterized by such dysregulations and that SSRIs might modify the function associated with this network

Preventing Revictimization Through a Web-Based Intervention for Primary Caregivers of Youth in Care (EMPOWERYOU): Protocol for a Randomized Factorial Trial

BackgroundChildren in foster care are at a higher risk for relationship problems than their counterparts raised by their biological family because of higher exposure to or prevalence of neglect or maltreatment early in life. Consequently, these children may also show more challenging behavior in their foster families, which in turn increases the parental stress experience of foster caregivers. Furthermore, the children may engage in a vicious cycle of risky relationship behaviors and expectations that put them at a greater risk for revictimization. ObjectiveTo support foster caregivers in reducing the risk for revictimization, several intervention modules delivered via the internet were developed using a consumer-based approach (phase 1 of the multiphase optimization strategy). This project (phase 2 of the multiphase optimization strategy) aimed to develop a sustainable intervention by selecting promising intervention components based on their contribution to the outcome. MethodsIn a 24 factorial trial, a total of 317 foster caregivers with children aged 8 to 13 years are randomly assigned to 1 of 16 conditions. The primary outcome is the rate of revictimization from baseline to 3 months after intervention. Secondary outcomes include risk-taking and functional behaviors in relationships. All caregivers will receive access to all the intervention components after the follow-up assessment. The participants assigned to the condition with all component levels on are expected to show the best improvement in the primary and secondary outcomes. ResultsRecruitment and data collection for the factorial trial started in March 2022 and is ongoing. As of October 2022, we recruited 181 families. Although it is difficult to predict the exact study timeline owing to COVID-19 pandemic–related delays, results are expected in February 2024. ConclusionsThere is a need for easily accessible information related to raising children in foster care who have experienced early life adversities to interrupt the cycle of violence and enhance the developmental pathway of health and emotional stability. It might be useful, in addition to generally useful parenting information (eg, parental self-care or emotion regulation management), to specifically focus on the needs of these caregivers (eg, how to support the child to reduce dysfunctional relationship behaviors that may have developed because of early adverse experiences). Trial RegistrationClinicalTrials.gov NCT05235659; https://clinicaltrials.gov/ct2/show/NCT05235659 International Registered Report Identifier (IRRID)DERR1-10.2196/3818