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Atherosclerosis I: Introduction

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 II: Pathophysiology

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...

Coronary Artery Disease I: Introduction

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...

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

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: Management

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...

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Related Experiment Video

Updated: Jul 9, 2026

Using En Face Immunofluorescence Staining to Observe Vascular Endothelial Cells Directly

Using En Face Immunofluorescence Staining to Observe Vascular Endothelial Cells Directly

Published on: August 20, 2019

Atherosclerosis and oxidative stress.

F Bonomini¹, S Tengattini, A Fabiano

¹Division of Human Anatomy, Department of Biomedical Sciences and Biotechnology, University of Brescia, Brescia, Italy.

Histology and Histopathology

|December 12, 2007

Summary

This summary is machine-generated.

Oxidative stress, driven by reactive oxygen species (ROS), is central to atherosclerosis development and progression. Understanding oxidant sources and antioxidant mechanisms is key for novel therapeutic strategies against cardiovascular diseases.

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Area of Science:

Cardiovascular Research
Oxidative Stress Biology
Pathophysiology

Background:

Atherosclerosis is characterized by oxidative stress within the vascular wall, involving lipid and protein modifications.
Reactive oxygen species (ROS) are critical signaling mediators in vascular inflammation during atherogenesis, from initial fatty streaks to plaque rupture.

Purpose of the Study:

To review the morphological features of atherosclerosis and the role of oxidative stress in its initiation and progression.
To explore the mechanisms of ROS production and the involvement of antioxidants in atherogenesis.

Main Methods:

Literature review focusing on the involvement of oxidative stress in atherosclerosis.
Analysis of ROS-generating enzymes (NADPH oxidase, MPO, XO, LO, NOS) and mitochondrial dysfunction.
Examination of antioxidant systems (SOD, CAT, GPx, etc.) and their protective roles.

Main Results:

Heightened oxidative stress is a hallmark of atherosclerosis, contributing to vascular inflammation and plaque instability.
Specific ROS sources, including NADPH oxidase and mitochondrial dysfunction, play a causal role in vascular diseases.
Antioxidant systems are crucial for maintaining vascular health, and their imbalance favors arteriosclerosis.

Conclusions:

Oxidative stress is a key driver of atherosclerosis, impacting all stages from initiation to plaque rupture and thrombosis.
Targeting ROS-producing enzymes and enhancing antioxidant defenses represent promising therapeutic avenues for atherosclerosis and related vascular diseases.