Cardiorespiratory Fitness Is Associated With Better White Matter Integrity in Persons Living With HIV.

Autor:	Kilgore CB; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Strain JF; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Nelson B; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Cooley SA; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Rosenow A; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Glans M; Department of Neurology, Washington University in St. Louis, St. Louis, MO., Cade WT; Doctor of Physical Therapy Division, Duke University, Durham, NC., Reeds DN; Department of Medicine, Washington University in St. Louis, St. Louis, MO., Paul RH; Department of Psychology, University of Missouri-St. Louis, St. Louis, MO., Ances BM; Department of Neurology, Washington University in St. Louis, St. Louis, MO.; Department of Radiology, Washington University in St. Louis, St. Louis, MO; and.; Hope Center for Neurological Disorders, Washington University in St. Louis, St. Louis, MO.
Jazyk:	angličtina
Zdroj:	Journal of acquired immune deficiency syndromes (1999) [J Acquir Immune Defic Syndr] 2022 Apr 15; Vol. 89 (5), pp. 558-565.
DOI:	10.1097/QAI.0000000000002907
Abstrakt:	Background: Despite improved survival rates, neurocognitive impairment persists in persons living with HIV (PLWH). An active lifestyle is linked to improved cognition among PLWH, yet the neural substrates remain unclear. Diffusion tensor imaging and diffusion basis spectrum imaging measure HIV-related changes in brain white matter integrity. We used these measures of structural brain integrity to assess white matter changes, physical fitness, and cognition in a cross-sectional study of PLWH. Methods: Forty-four virologically well-controlled PLWH were recruited (average age of 56 years, a median recent CD4+ count of 682 cells/mm3). Diffusion tensor imaging -derived fractional anisotropy (FA) and diffusion basis spectrum imaging-derived axonal density were calculated. Cardiorespiratory fitness [maximal volume of oxygen consumption (VO2 max)] was measured by performing indirect calorimetry during exercise to volitional exhaustion. Cardiovascular risk was assessed by the Framingham risk score. Neuropsychological performance (NP) testing evaluated learning, memory, psychomotor/processing speed, and executive function. Partial correlations assessed the relationships among cardiorespiratory fitness, neuroimaging, NP, and HIV clinical metrics (CD4+ count and time since diagnosis). Results: Higher VO2 max was associated with higher FA and higher axonal density in multiple white matter tracts, including the corticospinal tract and superior longitudinal fasciculus. Better NP in the motor/psychomotor domain was positively associated with FA and axonal density in diverse tracts including those associated with motor and visuospatial processing. However, higher VO2 max was not associated with NP or HIV clinical metrics. Conclusions: An active lifestyle promoting cardiorespiratory fitness may lead to better white matter integrity and decreased susceptibility to cognitive decline in virologically well-controlled PLWH. Competing Interests: The authors have no conflicts of interest to disclose. (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)
Databáze:	MEDLINE
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