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.

Related Concept Videos

Atherosclerosis I: Introduction01:30

Atherosclerosis I: Introduction

Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
Atherosclerosis III: Management01:26

Atherosclerosis III: Management

Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...