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A diffusion tensor imaging and neuropsychological study of prospective memory impairment in South African HIV positive individuals

Content Provider	Springer Nature Link
Author	Jacqueline, Hoare Jenny, Westgarth Taylor Jean Paul, Fouche Bruce, Spottiswoode Robert, Paul Kevin, Thomas Dan, Stein John, Joska
Copyright Year	2012
Abstract	HIV-associated prospective memory (ProM) impairment has emerged, in earlier studies as a significant predictor of medication management and independence in activities of daily living. The relationship between ProM and white matter integrity in HIV has not previously been investigated. Participants, including 128 HIV-infected individuals and 32 healthy controls, were assessed using a comprehensive neuropsychological evaluation and both objective and subjective measures of ProM. Diffusion tensor imaging (DTI) was utilized to investigate the relationship of white matter integrity to ProM in a randomly selected subsample of 40 HIV positive subjects, using a whole brain voxel-based approach to define fractional anisotrophy (FA) and mean diffusion (MD). Total prospective memory was significantly poorer in the HIV positive group when compared with healthy controls (p = 0.023). Time-based ProM was poorer in the HIV group compared to healthy controls both without prompts (p = 0.001) and with prompts (p = 0.001). Poor Total ProM score correlated with performance on neuropsychological tests of executive functioning, information processing speed, learning, and working memory (p < 0.05). Those HIV positive participants with poor ProM had significantly decreased FA in the regions of superior corona radiata (p = 0.0035), the corpus collosum (p = 0.006) and the cingulum (p = 0.0033) when compared to those who were HIV positive with good ProM. This study reinforces the importance of ProM assessment in HIV.
Starting Page	289
Ending Page	297
Page Count	9
File Format	PDF
ISSN	08857490
Journal	Metabolic Brain Disease
Volume Number	27
Issue Number	3
e-ISSN	15737365
Language	English
Publisher	Springer US
Publisher Date	2012-05-10
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	HIV/Aids Learning and memory Neuroimaging (functional) Executive function Dementia Mild cognitive impairment Neurosciences Neurology Metabolic Diseases Biochemistry Oncology
Content Type	Text
Resource Type	Article
Subject	Biochemistry Neurology (clinical) Cellular and Molecular Neuroscience

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A diffusion tensor imaging and neuropsychological study of prospective memory impairment in South African HIV positive individuals

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A diffusion tensor imaging and neuropsychological study of prospective memory impairment in South African HIV positive individuals