Biomarkers of neurological status in HIV infection: A 3-year study

Ann B. Ragin, Ying Wu, Renee Ochs, Rachel Scheidegger, Bruce A. Cohen, Robert R. Edelman, Leon G. Epstein, Justin McArthur

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To evaluate circulating cytokines and chemokines as correlates of the degree of brain injury in individuals with advanced human immunodeficiency virus (HIV) infection. Experimental design: Study participants included ten well-characterized subjects in advanced stage HIV infection. High-throughput multiplexed analysis was used to quantify markers of interest at baseline and 3 years later in the clinical course. Objective measurements of the brain were derived in vivo with quantitative magnetic resonance segmentation algorithms and with diffusion tensor imaging. Results: Of the markers examined, monocyte chemoattractant protein-1 (MCP-1 or CCL-2) was the most prominent correlate of brain injury. Elevated MCP-1 levels correlated with brain white matter alterations at the initial assessment. The relationship to injury was more extensive 3 years later; elevated MCP-1 was significantly correlated with measures of brain microstructural alterations and of abject atrophy. Conclusions and clinical relevance: The findings build on our prior observations that elevated MCP-1 levels may be a useful predictive marker for HIV-associated neurocognitive disorder. As a potent chemoattractant, MCP-1 may mediate injury through participation in self-reinforcing cycles of chronic immune activation and cytokine/chemokine-mediated neurotoxicity.

Original languageEnglish (US)
Pages (from-to)295-303
Number of pages9
JournalProteomics - Clinical Applications
Volume4
Issue number3
DOIs
StatePublished - Mar 2010

Keywords

  • Brain volumetry
  • Diffusion tensor imaging
  • Human immunodeficiency virusneurological disease
  • Monocyte chemoattractant protein-1

ASJC Scopus subject areas

  • Clinical Biochemistry

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