What is the pathogenesis of atherosclerosis?

Atherosclerosis is a disease of large and medium-sized arteries, characterized by endothelial dysfunction, vascular inflammation and the accumulation of modified lipid, inflammatory cells and cell debris in ‘plaques’ within the vascular wall.

What is the first step in the pathogenesis of atherosclerosis?

Lipid retention is the first step in the pathogenesis of atherosclerosis which is followed by chronic inflammation at susceptible sites in the walls of the major arteries lead to fatty streaks, which then progress to fibroatheromas which are fibrous in nature (Table 1) [5,6].

What is the process of atherosclerosis?

Atherosclerosis thickening or hardening of the arteries. It is caused by a buildup of plaque in the inner lining of an artery. Plaque is made up of deposits of fatty substances, cholesterol, cellular waste products, calcium, and fibrin. As it builds up in the arteries, the artery walls become thickened and stiff.

What is the pathogenesis of coronary artery disease?

Coronary artery disease is caused by plaque buildup in the wall of the arteries that supply blood to the heart (called coronary arteries). Plaque is made up of cholesterol deposits. Plaque buildup causes the inside of the arteries to narrow over time. This process is called atherosclerosis.

What are the three main forms of arteriosclerosis?

The three main types of arteriosclerosis include:

• Atherosclerosis: In this type, the large arteries are hardened and narrowed.
• Moenckeberg medial calcific sclerosis: The hardening of small to medium-sized arteries.
• Arteriolosclerosis: The calcification of small arteries.

How many stages of atherosclerosis are there?

How does atherosclerosis happen? Although the exact process is not completely understood, scientists have described three different stages of atherosclerosis that lead to clogged arteries. These stages do not necessarily occur in order, nor is there always a progression from one stage to the next.

Is pathophysiology and pathogenesis same?

In short, understanding pathogenesis is studying how a disease infects an individual after exposure; whereas, pathophysiology studies the resulting effects and symptoms due to the disease.

What is the pathogenesis of myocardial infarction?

Myocardial Infarction (MI) The pathogenesis can include: Occlusive intracoronary thrombus – a thrombus overlying an atheromatous plaque is estimated to cause 75% of myocardial infarctions, with superficial plaque erosion present in the remaining 25%.

What are the two types of atherosclerosis?

What are the different types of arteriosclerosis?

Are there different types of atherosclerosis?

There are three recognized types of arteriosclerosis: atherosclerosis, arteriolosclerosis, and Monckeberg medial calcific sclerosis.

What are the stages of pathogenesis?

To cause disease, a pathogen must successfully achieve four steps or stages of pathogenesis: exposure (contact), adhesion (colonization), invasion, and infection.

How does pathogenesis occur?

Pathogenesis is the process by which an infection leads to disease. Pathogenic mechanisms of viral disease include (1) implantation of virus at the portal of entry, (2) local replication, (3) spread to target organs (disease sites), and (4) spread to sites of shedding of virus into the environment.

What are the 3 stages of myocardial infarction?

Acute myocardial infarction with rupture, gross. Acute myocardial infarction with rupture and tamponade, gross. Intermediate (healing) myocardial infarction (1 – 2 weeks), microscopic.