title: White matter correlates of apathy in HIV-positive subjects: a diffusion tensor imaging study.
abstract: Apathy is commonly reported by patients infected with HIV. No previous work has assessed the relationship between white matter and apathy in HIV. The authors aimed to determine whether apathy in HIV reflects a direct effect of the virus on subcortical brain regions or a secondary neuropsychiatric symptom. Thirteen HIV+ participants with apathy, 13 HIV+ participants with no apathy, and 10 healthy comparison subjects were examined using diffusion tensor imaging in the region of the anterior cingulate and corpus callosum. Results of the study confirmed the hypothesis which anticipated changes associated with apathy in white matter tracts that relay through the medial prefrontal cortex.
authors.affiliation: Department of Psychiatry and Mental Health, University of Cape Town, Anzio Road Observatory, 7925, Cape Town, South Africa. hoare.jax@googlemail.com
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Hoare
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Fouche
authors.forename: Bruce
authors.initials: B
authors.lastname: Spottiswoode
authors.forename: John A
authors.initials: JA
authors.lastname: Joska
authors.forename: Renata
authors.initials: R
authors.lastname: Schoeman
authors.forename: Dan J
authors.initials: DJ
authors.lastname: Stein
authors.forename: Paul D
authors.initials: PD
authors.lastname: Carey
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001931:Brain Mapping; D003337:Corpus Callosum / Q000503:physiopathology; D056324:Diffusion Tensor Imaging; D005260:Female; D006179:Gyrus Cinguli / Q000503:physiopathology; D006679:HIV Seropositivity / Q000503:physiopathology* / Q000523:psychology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000503:physiopathology* / Q000523:psychology*; D009413:Nerve Fibers, Myelinated; D011569:Psychiatric Status Rating Scales; D012044:Regression Analysis