Biomarkers of immune dysfunction in HIV

Daniel E. Nixon, Alan L. Landay

Research output: Contribution to journalReview articlepeer-review


Purpose of Review: HIV infection is characterized by chronic immune system activation and inflammatory cytokine production. This review will highlight recent developments using plasma and cellular biomarkers of immune system activation and dysfunction to predict mortality and opportunistic disease in HIV-infected individuals. Recent Findings: HIV infection results in features characteristic of early aging of the immune system or 'immune senescence', driven by chronic antigen exposure and immune system activation. Microbial translocation of gut bacterial components is associated with chronic immune activation and possibly systemic inflammation. Antiretroviral therapy may not fully normalize this condition. Baseline elevations of certain biomarkers of inflammation or coagulopathy, notably interleukin-6 (IL-6), C-reactive protein (CRP), and D-dimer, have been associated with mortality or opportunistic disease, after adjustment for appropriate variables, in several large randomized clinical trials. It is not known if elevated IL-6 or CRP causes this morbidity and mortality or if they are simply surrogate markers of a global inflammatory state. Summary: Several inflammatory biomarkers appear to add to our ability to predict mortality or opportunistic disease in HIV-infected individuals. Before biomarkers will be useful, it will be necessary to identify interventions that moderate biomarker levels, and then determine if this moderation attenuates disease outcomes.

Original languageEnglish (US)
Pages (from-to)498-503
Number of pages6
JournalCurrent Opinion in HIV and AIDS
Issue number6
StatePublished - Nov 2010
Externally publishedYes


  • Biomarker
  • C-reactive protein
  • D-dimer
  • HIV
  • immune activation
  • immune senescence
  • interleukin-6

ASJC Scopus subject areas

  • Immunology
  • Hematology
  • Oncology
  • Oncology(nursing)
  • Infectious Diseases
  • Virology


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