White matter hyperintensities correlate to cognition and fiber tract integrity in older adults with HIV

Christa Watson, Edgar Busovaca, Jessica M. Foley, I. Elaine Allen, Christopher G. Schwarz, Neda Jahanshad, Talia M. Nir, Pardis Esmaeili-Firidouni, Benedetta Milanini, Howard Rosen, Owen T. Carmichael, Paul M. Thompson, Victor G. Valcour

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Our aim was to examine the clinical relevance of white matter hyperintensities (WMH) in HIV. We used an automated approach to quantify WMH volume in HIV seropositive (HIV+; n = 65) and HIV seronegative (HIV−; n = 29) adults over age 60. We compared WMH volumes between HIV+ and HIV− groups in cross-sectional and multiple time-point analyses. We also assessed correlations between WMH volumes and cardiovascular, HIV severity, cognitive scores, and diffusion tensor imaging variables. Serostatus groups did not differ in WMH volume, but HIV+ participants had less cerebral white matter (mean: 470.95 [43.24] vs. 497.63 [49.42] mL, p = 0.010). The distribution of WMH volume was skewed in HIV+ with a high proportion (23%) falling above the 95th percentile of WMH volume defined by the HIV− group. Serostatus groups had similar amount of WMH volume growth over time. Total WMH volume directly correlated with measures of hypertension and inversely correlated with measures of global cognition, particularly in executive functioning, and psychomotor speed. Greater WMH volume was associated with poorer brain integrity measured from diffusion tensor imaging (DTI) in the corpus callosum and sagittal stratum. In this group of HIV+ individuals over 60, WMH burden was associated with cardiovascular risk and both worse diffusion MRI and cognition. The median total burden did not differ by serostatus; however, a subset of HIV+ individuals had high WMH burden.

Original languageEnglish (US)
Pages (from-to)422-429
Number of pages8
JournalJournal of neurovirology
Volume23
Issue number3
DOIs
StatePublished - Jun 1 2017

Keywords

  • Aging
  • Cerebrovascular
  • Diffusion tensor imaging
  • HIV
  • Leukoaraiosis
  • White matter

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Virology

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    Watson, C., Busovaca, E., Foley, J. M., Allen, I. E., Schwarz, C. G., Jahanshad, N., Nir, T. M., Esmaeili-Firidouni, P., Milanini, B., Rosen, H., Carmichael, O. T., Thompson, P. M., & Valcour, V. G. (2017). White matter hyperintensities correlate to cognition and fiber tract integrity in older adults with HIV. Journal of neurovirology, 23(3), 422-429. https://doi.org/10.1007/s13365-016-0509-5