Association between HIV infection and mitochondrial DNA copy number in peripheral blood: A population-based, prospective cohort study

Jing Sun, Ryan J. Longchamps, Damani A. Piggott, Christina A. Castellani, Jason A. Sumpter, Todd T. Brown, Shruti H. Mehta, Dan E. Arking, Gregory D. Kirk

Research output: Contribution to journalArticlepeer-review

Abstract

Background. Low mitochondrial DNA (mtDNA) copy number (CN) is a predictor of adverse aging outcomes, and its status may be altered in human immunodefciency virus (HIV)-infected persons. Tis study evaluated the cross-sectional and longitudinal change of mtDNA CN by HIV markers. Methods. mtDNA CN was measured in the ALIVE (AIDS Linked to the Intravenous Experience) cohort of persons with a history of injecting drugs. Multivariable linear regression models controlling for demographic characteristics, behavior, and hepatitis C virus (HCV) seropositivity assessed the relationship of mtDNA CN to HIV markers (CD4+ T-cell counts, viral load, antiretroviral therapy [ART] use). Linear mixed models tested the association between HIV markers and age-related mtDNA CN trajectories. Results. Among 741 individuals at baseline, 436 (59%) were infected with HIV. HIV-infected individuals who had lower CD4+ T-cell counts (P =.01), had higher viral loads (P <.01), and were not receiving ART (P <.01) had signifcantly lower mtDNA CNs than uninfected persons; there was no difference between participants who were uninfected and HIV-infected individuals who had well-controlled HIV levels. In longitudinal follow-up of 507 participants, from age 50 years onward, mtDNA CN declined signifcantly faster among HIV-infected individuals than among HIV-uninfected persons (-0.03 units of change/year vs 0.006 units of change/year; P =.04), even among infected individuals with well-controlled HIV. Conclusion. Before 50 years of age, mtDNA CN is similar between HIV-infected individuals with well-controlled HIV and uninfected persons, but from age 50 onward, mtDNA CN declines signifcantly faster among all infected individuals than among HIV-uninfected persons.

Original languageEnglish (US)
Pages (from-to)1285-1293
Number of pages9
JournalJournal of Infectious Diseases
Volume219
Issue number8
DOIs
StatePublished - Apr 8 2019

Keywords

  • Aging
  • Biomarker
  • HIV
  • Mitochondrial DNA copy number

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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