Atherosclerosis: role of chemokines and macrophages

A D Lucas1, D R Greaves

  • 1Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK. andrew.lucas@path.ox.ac.uk

Insights

This review explores atherosclerosis, a major artery disease causing heart attacks and stroke. It highlights macrophage biology and chemokines

Area of Science:

  • Cardiovascular pathology
  • Immunology
  • Cell biology

Background:

  • Atherosclerosis is a major arterial disease underlying heart attacks, stroke, and peripheral artery disease.
  • Early lesions (fatty streaks) involve macrophage foam cells from monocytes.
  • Advanced lesions (fibro-fatty plaques) result from monocyte recruitment and smooth muscle cell proliferation.

Purpose of the Study:

  • To review key features of macrophage biology in atherosclerosis.
  • To discuss factors influencing atherosclerotic lesion development (atherogenesis).
  • To explore the role of chemokines in monocyte recruitment and macrophage differentiation.

Main Methods:

  • Literature review of atherosclerosis pathogenesis.
  • Analysis of macrophage biology and function.
  • Examination of chemokine involvement in monocyte recruitment.

Main Results:

  • Macrophage foam cells are central to early atherosclerotic lesions.
  • Smooth muscle cell migration and proliferation contribute to advanced plaques.
  • T helper cell cytokines modulate macrophage gene expression.

Conclusions:

  • Understanding macrophage biology is crucial for addressing atherosclerosis.
  • Chemokines play a significant role in mediating monocyte recruitment and macrophage differentiation.
  • Further research into chemokines may offer therapeutic targets for atherosclerosis.

Related Concept Videos

Inflammation01:38

Inflammation

Overview
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 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...
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...
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...