Browsing by Author "Merchant, Roland"

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    Brain dynamics reflecting an intra-network brain state is associated with increased posttraumatic stress symptoms in the early aftermath of trauma
    (Research Square, 2024-03-08) Sendi, Mohammad; Fu, Zening; Harnett, Nathaniel; van Rooij, Sanne; Vergara, Victor; Pizzagalli, Diego; Daskalakis, Nikolaos; House, Stacey; Beaudoin, Francesca; An, Xinming; Neylan, Thomas; Clifford, Gari; Jovanovic, Tanja; Linnstaedt, Sarah; Germine, Laura; Bollen, Kenneth; Rauch, Scott; Haran, John; Storrow, Alan; Lewandowski, Christopher; Musey, Paul, Jr.; Hendry, Phyllis; Sheikh, Sophia; Jones, Christopher; Punches, Brittany; Swor, Robert; Gentile, Nina; Murty, Vishnu; Hudak, Lauren; Pascual, Jose; Seamon, Mark; Harris, Erica; Chang, Anna; Pearson, Claire; Peak, David; Merchant, Roland; Domeier, Robert; Rathlev, Niels; O'Neil, Brian; Sergot, Paulina; Sanchez, Leon; Bruce, Steven; Sheridan, John; Harte, Steven; Kessler, Ronald; Koenen, Karestan; McLean, Samuel; Stevens, Jennifer; Calhoun, Vince; Ressler, Kerry; Emergency Medicine, School of Medicine
    This study examines the association between brain dynamic functional network connectivity (dFNC) and current/future posttraumatic stress (PTS) symptom severity, and the impact of sex on this relationship. By analyzing 275 participants' dFNC data obtained ~2 weeks after trauma exposure, we noted that brain dynamics of an inter-network brain state link negatively with current (r=-0.179, pcorrected= 0.021) and future (r=-0.166, pcorrected= 0.029) PTS symptom severity. Also, dynamics of an intra-network brain state correlated with future symptom intensity (r = 0.192, pcorrected = 0.021). We additionally observed that the association between the network dynamics of the inter-network brain state with symptom severity is more pronounced in females (r=-0.244, pcorrected = 0.014). Our findings highlight a potential link between brain network dynamics in the aftermath of trauma with current and future PTSD outcomes, with a stronger protective effect of inter-network brain states against symptom severity in females, underscoring the importance of sex differences.
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    Socio-demographic and trauma-related predictors of depression within eight weeks of motor vehicle collision in the AURORA study
    (Cambridge University Press, 2022) Joormann, Jutta; McLean, Samuel A.; Beaudoin, Francesca L.; An, Xinming; Stevens, Jennifer S.; Zeng, Donglin; Neylan, Thomas C.; Clifford, Gari; Linnstaedt, Sarah D.; Germine, Laura T.; Rauch, Scott L.; Musey, Paul I.; Hendry, Phyllis L.; Sheikh, Sophia; Jones, Christopher W.; Punches, Brittany E.; Fermann, Gregory; Hudak, Lauren A.; Mohiuddin, Kamran; Murty, Vishnu; McGrath, Meghan E.; Haran, John P.; Pascual, Jose; Seamon, Mark; Peak, David A.; Pearson, Claire; Domeier, Robert M.; Sergot, Paulina; Merchant, Roland; Sanchez, Leon D.; Rathlev, Niels K.; Peacock, William F.; Bruce, Steven E.; Barch, Deanna; Pizzagalli, Diego A.; Luna, Beatriz; Harte, Steven E.; Hwang, Irving; Lee, Sue; Sampson, Nancy; Koenen, Karestan C.; Ressler, Kerry J.; Kessler, Ronald C.; Emergency Medicine, School of Medicine
    Background: This is the first report on the association between trauma exposure and depression from the Advancing Understanding of RecOvery afteR traumA(AURORA) multisite longitudinal study of adverse post-traumatic neuropsychiatric sequelae (APNS) among participants seeking emergency department (ED) treatment in the aftermath of a traumatic life experience. Methods: We focus on participants presenting at EDs after a motor vehicle collision (MVC), which characterizes most AURORA participants, and examine associations of participant socio-demographics and MVC characteristics with 8-week depression as mediated through peritraumatic symptoms and 2-week depression. Results: Eight-week depression prevalence was relatively high (27.8%) and associated with several MVC characteristics (being passenger v. driver; injuries to other people). Peritraumatic distress was associated with 2-week but not 8-week depression. Most of these associations held when controlling for peritraumatic symptoms and, to a lesser degree, depressive symptoms at 2-weeks post-trauma. Conclusions: These observations, coupled with substantial variation in the relative strength of the mediating pathways across predictors, raises the possibility of diverse and potentially complex underlying biological and psychological processes that remain to be elucidated in more in-depth analyses of the rich and evolving AURORA database to find new targets for intervention and new tools for risk-based stratification following trauma exposure.