Atherosclerosis Pathophysiology Definition: Atherosclerosis pathophysiology refers to the complex and multifaceted mechanisms through which plaque build...
Atherosclerosis Pathophysiology
Definition:
Atherosclerosis pathophysiology refers to the complex and multifaceted mechanisms through which plaque buildup in arteries leads to atherosclerosis, a condition characterized by plaque plaque formation, inflammation, and restenosis (narrowing or hardening of blood vessel walls).
Key Pathophysiological Mechanisms:
Plaque Deposition: Plaque is comprised of cholesterol, fatty substances, calcium, and other substances that can accumulate in artery walls. Plaque can develop due to abnormal cholesterol levels, high blood pressure, high cholesterol, diabetes, obesity, and genetics.
Oxidation and Inflammation: When plaque is oxidized (broken down) and inflamed, it releases inflammatory molecules that can contribute to plaque rupture and further plaque deposition.
Oxidative Stress: Atherosclerosis is linked to chronic oxidative stress, which can damage blood vessel walls and contribute to plaque rupture.
Inflammation: Chronic inflammation in the arteries can promote plaque buildup and further atherosclerosis.
Cell Adhesion: Cells in the arterial wall can adhere to plaque and grow into it, forming a plaque.
Fibrosis: Excessive scarring and tissue deposition occur in the arteries affected by atherosclerosis, further narrowing the blood passages.
Examples:
High levels of LDL (bad) cholesterol and triglycerides in the blood can contribute to plaque buildup and increase the risk of atherosclerosis.
Smoking, high blood pressure, and obesity can significantly increase the risk of atherosclerosis.
High levels of inflammation markers, such as C-reactive protein (CRP), can indicate plaque inflammation and contribute to atherosclerosis progression.
Genetic factors can also play a role in atherosclerosis development