Loss of CCR2 expressing non-classical monocytes are associated with cognitive impairment in antiretroviral therapy-naïve HIV-infected Thais

Lishomwa C. Ndhlovu, Michelle L. D'Antoni, Jintanat Ananworanich, Mary Margaret Byron, Thep Chalermchai, Pasiri Sithinamsuwan, Somporn Tipsuk, Erika Ho, Bonnie M. Slike, Alexandra Schuetz, Guangxiang Zhang, Melissa Agsalda-Garcia, Bruce Shiramizu, Cecilia M. Shikuma, Victor Valcour

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

HIV DNA in monocytes has been linked to HIV-associated neurocognitive disorders (HAND), however, characterization of monocyte subsets associated with HAND remains unclear. We completed a prospective study of antiretroviral therapy-naïve, HIV-infected Thais, with varying degrees of cognitive impairment, compared to HIV-uninfected controls. Monocyte subsets' CCR2, CCR5 and CD163 expression were profiled and inflammatory markers in plasma and cerebrospinal fluid (CSF), measured. Lower numbers of CCR2+non-classical monocytes were associated with worse neuropsychological test performance (r=0.43, p=0.024). CCR2+non-classical monocyte count inversely correlated with CSF neopterin (r=-0.43, p=0.035) and plasma TNF-α levels (r=-0.40, p=0.041). These data benchmark CCR2+non-classical monocytes as an independent index of cognitive impairment.

Original languageEnglish (US)
Pages (from-to)25-33
Number of pages9
JournalJournal of Neuroimmunology
Volume288
DOIs
StatePublished - Nov 15 2015
Externally publishedYes

Keywords

  • C-C chemokine receptor (CCR) CCR2
  • CD163
  • HIV-associated neurocognitive disorders (HAND)
  • Monocytes
  • Neopterin

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Neurology
  • Clinical Neurology

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