Abstract:
:Abnormalities in brain white matter (WM) structure have been reported in youths having a family history of substance use disorders (SUDs). It was hypothesized that these abnormalities constitute features of the liability for SUDs transmitted across generations. The association between severity of intergenerational risk for SUD, measured by the Transmissible Liability Index (TLI), and white matter microstructure was examined. Diffusion tensor imaging (DTI) measured WM microstructure in forty-four drug-naïve 10-14 year-olds (N = 19 with parental SUD). Metrics of WM microstructure (i.e., fractional anisotropy, radial diffusivity, mean diffusivity and axial diffusivity) were quantified across the whole brain and in four tracts of interest: anterior corona radiata, superior and inferior longitudinal fasciculi and superior fronto-occipital fasciculi. The TLI was completed by the youths, their parents and, when available, their teachers. The relationship between WM structure and TLI score across the entire group was evaluated using linear multiple regression and between group comparisons were also examined. Fractional anisotropy and radial diffusivity in multiple tracts across the brain were significantly associated with TLI scores. Confirming and extending prior research, the findings indicate that global atypicality in WM tracts was linearly related to liability for eventual SUD development in drug naïve youths.
journal_name
Brain Imaging Behavjournal_title
Brain imaging and behaviorauthors
Hulvershorn L,Hummer T,Wu YC,Tarter R,Rea P,Anand A,Andrew Chambers R,Finn Pdoi
10.1007/s11682-017-9679-xsubject
Has Abstractpub_date
2018-02-01 00:00:00pages
274-283issue
1eissn
1931-7557issn
1931-7565pii
10.1007/s11682-017-9679-xjournal_volume
12pub_type
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