Increased cardiovascular disease risk in the HIV-positive population on ART: potential role of HIV-Nef and Tat

Abstract

With effective antiretroviral therapy (ART), many HIV-infected people die of diseases other than acquired immune deficiency syndrome (AIDS). In particular, coronary artery disease has emerged as one of most critical complications of HIV infection and a major cause of morbidity and mortality. Although reportedly antiretroviral combination therapy itself may accelerate atherosclerosis by enhancing dyslipidemia, most recent epidemiological studies support the notion that HIV infection itself contributes to cardiovascular disease. However, it is still a mystery how the virus can contribute to cardiovascular disease development even while suppressed by ARTs. This review discusses the current understanding of interactions between HIV infection and cardiovascular diseases in both clinical and experimental studies with special focus on those viral proteins that are still produced by HIV. This will help infectious disease/vascular biology experts to gain insights into the pathophysiological mechanisms of HIV-associated cardiovascular disease and new trends to treat and prevent cardiovascular disease in the HIV-infected population.

Keywords: ART; Cardiovascular diseases; Endothelial dysfunction; HIV Nef; HIV Tat.

Schematic 1

Discussed mechanism of HIV-induced endothelial activation and dysfunction in untreated viremic (A) HIV patients and those on anti-retroviral treatment (B).

Schematic 1

Discussed mechanism of HIV-induced endothelial activation and dysfunction in untreated viremic (A) HIV patients and those on anti-retroviral treatment (B).