TY  - JOUR
PY  - 2023//
TI  - Internal capsule microstructure mediates the relationship between childhood maltreatment and PTSD following adulthood trauma exposure
JO  - Molecular psychiatry
A1  - Wong, Samantha A.
A1  - Lebois, Lauren A. M.
A1  - Ely, Timothy D.
A1  - van Rooij, Sanne J. H.
A1  - Bruce, Steven E.
A1  - Murty, Vishnu P.
A1  - Jovanovic, Tanja
A1  - House, Stacey L.
A1  - Beaudoin, Francesca L.
A1  - An, Xinming
A1  - Zeng, Donglin
A1  - Neylan, Thomas C.
A1  - Clifford, Gari D.
A1  - Linnstaedt, Sarah D.
A1  - Germine, Laura T.
A1  - Bollen, Kenneth A.
A1  - Rauch, Scott L.
A1  - Haran, John P.
A1  - Storrow, Alan B.
A1  - Lewandowski, Christopher
A1  - Musey, Paul I. Jr
A1  - Hendry, Phyllis L.
A1  - Sheikh, Sophia
A1  - Jones, Christopher W.
A1  - Punches, Brittany E.
A1  - Kurz, Michael C.
A1  - Swor, Robert A.
A1  - Hudak, Lauren A.
A1  - Pascual, Jose L.
A1  - Seamon, Mark J.
A1  - Pearson, Claire
A1  - Peak, David A.
A1  - Merchant, Roland C.
A1  - Domeier, Robert M.
A1  - Rathlev, Niels K.
A1  - O'Neil, Brian J.
A1  - Sergot, Paulina
A1  - Sanchez, Leon D.
A1  - Miller, Mark W.
A1  - Pietrzak, Robert H.
A1  - Joormann, Jutta
A1  - Barch, Deanna M.
A1  - Pizzagalli, Diego A.
A1  - Harte, Steven E.
A1  - Elliott, James M.
A1  - Kessler, Ronald C.
A1  - Koenen, Karestan C.
A1  - McLean, Samuel A.
A1  - Ressler, Kerry J.
A1  - Stevens, Jennifer S.
A1  - Harnett, Nathaniel G.
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Childhood trauma is a known risk factor for trauma and stress-related disorders in adulthood. However, limited research has investigated the impact of childhood trauma on brain structure linked to later posttraumatic dysfunction. We investigated the effect of childhood trauma on white matter microstructure after recent trauma and its relationship with future posttraumatic dysfunction among trauma-exposed adult participants (n = 202) recruited from emergency departments as part of the AURORA Study. Participants completed self-report scales assessing prior childhood maltreatment within 2-weeks in addition to assessments of PTSD, depression, anxiety, and dissociation symptoms within 6-months of their traumatic event. Fractional anisotropy (FA) obtained from diffusion tensor imaging (DTI) collected at 2-weeks and 6-months was used to index white matter microstructure. Childhood maltreatment load predicted 6-month PTSD symptoms (b = 1.75, SE = 0.78, 95% CI = [0.20, 3.29]) and inversely varied with FA in the bilateral internal capsule (IC) at 2-weeks (p = 0.0294, FDR corrected) and 6-months (p = 0.0238, FDR corrected). We observed a significant indirect effect of childhood maltreatment load on 6-month PTSD symptoms through 2-week IC microstructure (b = 0.37, Boot SE = 0.18, 95% CI = [0.05, 0.76]) that fully mediated the effect of childhood maltreatment load on PCL-5 scores (b = 1.37, SE = 0.79, 95% CI = [-0.18, 2.93]). IC microstructure did not mediate relationships between childhood maltreatment and depressive, anxiety, or dissociative symptomatology. Our findings suggest a unique role for IC microstructure as a stable neural pathway between childhood trauma and future PTSD symptoms following recent trauma. Notably, our work did not support roles of white matter tracts previously found to vary with PTSD symptoms and childhood trauma exposure, including the cingulum bundle, uncinate fasciculus, and corpus callosum. Given the IC contains sensory fibers linked to perception and motor control, childhood maltreatment might impact the neural circuits that relay and process threat-related inputs and responses to trauma.<p />  <p>Language: en</p>
LA  - en
SN  - 1359-4184
UR  - http://dx.doi.org/10.1038/s41380-023-02012-3
ID  - ref1
ER  -