Intranasal Oxytocin's Impact on Functional Brain Network Topology in Healthy Males Under Investigation

Trait anxiety is characterized by persistent anxiety proneness, even without immediate threats, often linked to intrinsic hyper-connectivity within the brain's defensive systems. This heightened neural activity can contribute to impaired emotional regulation and social interactions. Current interventions often target symptoms rather than underlying neural network dysregulation. Oxytocin, a neuropeptide known for its roles in social bonding and emotional processing, has shown promise in modulating these neural circuits. Understanding how intranasal oxytocin specifically alters functional brain network topology could offer novel insights into therapeutic strategies for anxiety-related conditions by targeting these core neural mechanisms.

Researchers designed a study to investigate the effects of intranasal oxytocin 8IU on functional brain networks in healthy males. Participants received 8IU intranasal oxytocin and underwent fMRI scans during both resting-state and various tasks. The primary endpoint was to assess changes in neural activity during affective touch, analyzed using a within-subject General Linear Model approach. Secondary outcomes included comparing the effects of intranasal versus oral oxytocin administration on neural functional connectivity during emotional scene processing, with assessments conducted 45-90 minutes post-treatment.