Publication Date

2014

Journal Title

Psychiatry Res

Abstract

Although epidemiological studies provide strong support for demographic and environmental risk factors in psychotic disorders, few data examine how these risk factors relate to the putative aberrant neurodevelopment associated with illness. The present study examined how the accumulation of risk factors including low IQ, low parental socioeconomic status (SES), history of adolescent cannabis use and childhood trauma, and high levels of subclinical psychotic-like experiences (PLEs) contributed to aberrant neurodevelopmental outcomes in 112 otherwise healthy adults recruited from the community. Participants were studied with diffusion tensor imaging (DTI), and voxel-wise statistical analysis of fractional anisotropy (FA) using tractbased spatial statistics (TBSS) was used to examine the relation between cumulative risk (CR) For psychosis and white matter (WM) integrity across the whole brain. Analyses revealed that higher CR was significantly associated with lower FA in a cluster in the left superior longitudinal fasciculus (SLF). These results suggest that risk factors previously associated with psychotic disorders are associated with WM integrity even in otherwise healthy adults and may provide insight into how previously identified risk factors contribute to the structural brain abnormalities associated with psychotic illness. Prospective longitudinal studies examining the effect of risk factors on the developmental trajectory of brain WM are warranted. (C) 2014 Elsevier Ireland Lkl. All rights reserved.

Volume Number

224

Issue Number

3

Pages

296-302

Document Type

Article

Status

Faculty; Northwell Researcher

Facility

School of Medicine; Northwell Health

Primary Department

Psychiatry

Additional Departments

Molecular Medicine

PMID

25277095

DOI

10.1016/j.psyychresns.2014.09.001


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