Low CD4 nadir linked to widespread cortical thinning in adults living with HIV.

Abstract:

BACKGROUND:The history of immune suppression, especially CD4 nadir, has been shown to be a strong predictor of HIV-associated neurocognitive disorders (HAND). However, the potential mechanism of this association is not well understood. METHODS:High resolution structural MRI images and neuropsychological data were obtained from fifty-nine HIV+ adults (mean age, 56.5 ± 5.8) to investigate the correlation between CD4 nadir and cortical thickness. RESULTS:Low CD4 nadir was associated with widespread cortical thinning, especially in the frontal and temporal regions, and global mean cortical thickness correlated with CD4 nadir. In addition, worse global neurocognitive function was associated with bilateral frontal cortical thinning, and the association largely persisted (especially in the left frontal cortex) in the subset of participants who did not meet HAND criteria. CONCLUSIONS:These results suggest that low CD4 nadir may be associated with widespread neural injury in the brain, especially in the frontal and temporal regions. The diffuse neural injury might contribute to the prevalence and the phenotypes of HAND, as well as the difficulty treating HAND due to a broad network of brain regions affected. Low CD4 nadir related neural injury to the frontal cortex might contribute to subtle neurocognitive impairment/decline, even in the absence of HAND diagnosis.

journal_name

Neuroimage Clin

journal_title

NeuroImage. Clinical

authors

Hassanzadeh-Behbahani S,Shattuck KF,Bronshteyn M,Dawson M,Diaz M,Kumar P,Moore DJ,Ellis RJ,Jiang X

doi

10.1016/j.nicl.2019.102155

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

102155

issn

2213-1582

pii

S2213-1582(19)30501-7

journal_volume

25

pub_type

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