Abstract
The aims of this study were to investigate the frequency of HIV-1 RNA level discordance between the cerebrospinal fluid (CSF) and plasma and of CSF viral escape (CVE) in patients with HIV-1 subtype C on antiretroviral therapy, and evaluate the CSF white blood cell (WBC) performance characteristics in predicting CSF discordance in HIV+ group and the frequency of cognitive impairment in individuals with CSF HIV discordance or escape. HIV-1 RNA levels were assessed in plasma and CSF samples from 68 HIV+ participants without opportunistic infection. CSF discordance was found in 7.4% and CVE in 10%, with comparable frequencies between HIV-1B and C. Twenty samples (29%) showed increased CSF WBC counts. This group had higher CSF and plasma HIV-1 RNA levels than the group with normal WBC counts (p < 0.0001 and 0.006, respectively). The odds of CSF discordance were 18 times higher for a person with CSF WBC count of > 5 cells/mm3 than the group with normal CSF WBC count. CSF WBC counts (cut-off of 15 cells/mm3) showed high-performance characteristics as a predictive biomarker of CSF discordance (AUC the ROC curve 0.98). The frequency of cognitive impairment for CSF escape or discordance was 83% and 80%. The odds of cognitive impairment in these groups were 19 and 15 times higher than those for an HIV(−) person. Viral discordance or escape in the CNS occurs at a comparable frequency for HIV-1C and HIV-1B. The CSF WBC count was effective as a predictive biomarker of CSF and plasma discordance.
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This research was supported by NIH R21 MH76651 (principal investigators: R. Ellis, S. de Almeida) and HIV Neurobehavioral Research Center (HNRC; P30 MH062512).
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de Almeida, S.M., Rotta, I., de Pereira, A.P. et al. Cerebrospinal fluid pleocytosis as a predictive factor for CSF and plasma HIV RNA discordance and escape. J. Neurovirol. 26, 241–251 (2020). https://doi.org/10.1007/s13365-020-00828-1
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DOI: https://doi.org/10.1007/s13365-020-00828-1