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Erschienen in: Journal of NeuroVirology 2/2016

01.04.2016

Age exacerbates HIV-associated white matter abnormalities

verfasst von: Talia R. Seider, Assawin Gongvatana, Adam J. Woods, Huaihou Chen, Eric C. Porges, Tiffany Cummings, Stephen Correia, Karen Tashima, Ronald A. Cohen

Erschienen in: Journal of NeuroVirology | Ausgabe 2/2016

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Abstract

Both HIV disease and advanced age have been associated with alterations to cerebral white matter, as measured with white matter hyperintensities (WMH) on fluid-attenuated inversion recovery (FLAIR) magnetic resonance imaging (MRI), and more recently with diffusion tensor imaging (DTI). This study investigates the combined effects of age and HIV serostatus on WMH and DTI measures, as well as the relationships between these white matter measures, in 88 HIV seropositive (HIV+) and 49 seronegative (HIV−) individuals aged 23–79 years. A whole-brain volumetric measure of WMH was quantified from FLAIR images using a semi-automated process, while fractional anisotropy (FA) was calculated for 15 regions of a whole-brain white matter skeleton generated using tract-based spatial statistics (TBSS). An age by HIV interaction was found indicating a significant association between WMH and older age in HIV+ participants only. Similarly, significant age by HIV interactions were found indicating stronger associations between older age and decreased FA in the posterior limbs of the internal capsules, cerebral peduncles, and anterior corona radiata in HIV+ vs. HIV− participants. The interactive effects of HIV and age were stronger with respect to whole-brain WMH than for any of the FA measures. Among HIV+ participants, greater WMH and lower anterior corona radiata FA were associated with active hepatitis C virus infection, a history of AIDS, and higher current CD4 cell count. Results indicate that age exacerbates HIV-associated abnormalities of whole-brain WMH and fronto-subcortical white matter integrity.
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Metadaten
Titel
Age exacerbates HIV-associated white matter abnormalities
verfasst von
Talia R. Seider
Assawin Gongvatana
Adam J. Woods
Huaihou Chen
Eric C. Porges
Tiffany Cummings
Stephen Correia
Karen Tashima
Ronald A. Cohen
Publikationsdatum
01.04.2016
Verlag
Springer US
Erschienen in
Journal of NeuroVirology / Ausgabe 2/2016
Print ISSN: 1355-0284
Elektronische ISSN: 1538-2443
DOI
https://doi.org/10.1007/s13365-015-0386-3

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