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Published on: May 6, 2014
HIV-related mechanisms in atherosclerosis and cardiovascular diseases
Davide Gibellini1, Marco Borderi, Alberto Clò
1aMicrobiology Section, Department of Haematology and Oncological Sciences bInfectious Diseases Section, Department of Internal Medicine, Aging and Nephrology, University of Bologna, Bologna cDepartment of Life Sciences, University of Trieste, Trieste dInteruniversity Consortium, National Institute Biostructure and Biosystems, Rome, Italy.
Insights
HIV infection increases cardiovascular disease risk through direct effects on blood vessels and lipid metabolism, impacting both treated and untreated patients. This review explores these key HIV-related mechanisms promoting atherosclerosis.
Area of Science:
- Cardiovascular Medicine
- Infectious Diseases
- Pathophysiology
Background:
- HIV infection significantly elevates the risk of cardiovascular events.
- Cardiovascular complications like atherosclerosis and myocardial infarction occur in both treated and untreated HIV-positive individuals.
Purpose of the Study:
- To review the primary HIV-related mechanisms contributing to atherosclerosis and cardiovascular disease in HIV-positive patients.
- To explore the direct and indirect effects of HIV on vascular structures and cellular targets.
Main Methods:
- Literature review of recent studies on HIV and cardiovascular disease.
- Analysis of HIV's impact on cellular targets (macrophages, endothelial cells).
- Examination of HIV's effects on lipid metabolism and inflammatory pathways.
Main Results:
- HIV directly and indirectly affects vessel structures, independent of traditional risk factors.
- HIV disrupts macrophage and endothelial cell biology.
- HIV profoundly alters lipid metabolism and inflammatory cytokine networks, promoting atherogenesis.
Conclusions:
- HIV infection drives atherosclerosis and cardiovascular disease through specific molecular and cellular mechanisms.
- Understanding these pathways is crucial for managing cardiovascular risk in HIV-positive patients.
Abstract:
HIV-infected patients have a significantly higher risk of developing cardiovascular events during the progression of HIV disease. Atherosclerosis, myocardial infarction, cerebrovascular injury, pulmonary hypertension and thrombosis are consistently described in both combined antiretroviral therapy (cART)-treated and naive HIV-positive patients as major clinical complications. Recent studies indicate that the pathogenesis of cardiovascular lesions in HIV-positive patients is related to direct and indirect effects of HIV infection on vessel structures, independently of traditional risk factors. HIV infection strongly interferes with the biology of several cellular targets such as macrophage and endothelial cells. Moreover, HIV induces a profound derangement of lipid metabolism and inflammatory cytokine networks that are directly involved in atherogenesis and progressive impairment of the cardiovascular system.In this review, we discuss these major HIV-related mechanisms able to promote atherosclerosis and cardiovascular diseases in HIV-positive patients.
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