Dec 10, 2019

Monocytes from men living with HIV exhibit heightened atherogenic potential despite long term viral suppression with ART

AIDS
Thomas A AngelovichAnthony Jaworowski

Abstract

People living with HIV have an increased risk of cardiovascular disease (CVD) despite effective antiretroviral therapy (ART). Monocytes play a key role in the early stages of atherosclerosis-driven CVD by forming lipid-laden foam cells within artery walls. HIV infection potentiates foam cell formation ex vivo, but the mechanisms contributing to this are not known. We investigated the atherosclerosis-promoting potential of monocytes from 39 virologically suppressed men living with HIV (MLHIV) on ART and no evidence of CVD, and 25 HIV-uninfected controls of comparable age, sex, smoking status and CVD risk. Despite absence of clinical atherosclerosis in both MLHIV and uninfected cohorts (evidenced by a carotid intima-media thickness of 0.6 mm for both groups; p = 0.254), monocytes from MLHIV showed increased potential to form atherosclerosis-promoting foam cells compared to controls in an ex vivo assay (36.6% vs 27.6% respectively, p = 0.003). Consistent with observations of persistent inflammation and immune/endothelial activation in ART-treated HIV infection, levels of soluble TNF receptor II, CXCL10 and soluble VCAM-1 were elevated in MLHIV (p≤0.005 for all), but were not significantly associated with foam cell formation. Foam ...Continue Reading

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Mentioned in this Paper

Intima
In Vivo
VCAM1
Light-driven Proton Transport
Tumor Necrosis Factor Receptor
Transendothelial Migration
Human Immunodeficiency Virus Test
Suppression, Genetic
Antiretroviral Therapy
HIV Infections

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