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Related Concept Videos

Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
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Coronary Artery Disease II: Pathophysiology01:26

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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...
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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...
Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

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Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
Peripheral Artery Disease I: Introduction01:30

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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...
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Updated: Jun 26, 2026

A Familial Hypercholesterolemia Human Liver Chimeric Mouse Model Using Induced Pluripotent Stem Cell-derived Hepatocytes
10:56

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Published on: September 15, 2018

Hypercholesterolemia-associated endothelial progenitor cell dysfunction.

Matteo Pirro1, Francesco Bagaglia, Lucio Paoletti

  • 1Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Perugia, Italy. mpirro@unipg.it

Therapeutic Advances in Cardiovascular Disease
|January 7, 2009
PubMed
Summary
This summary is machine-generated.

High cholesterol (hypercholesterolemia) damages blood vessels and impairs repair by affecting endothelial progenitor cells. This review explores these mechanisms and their impact on cardiovascular health.

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Area of Science:

  • Cardiovascular Science
  • Endothelial Biology
  • Lipid Metabolism

Background:

  • Hypercholesterolemia is a major risk factor for cardiovascular disease.
  • Elevated cholesterol levels cause mechanical endothelial injury and dysfunction.
  • Impaired vascular repair is linked to reduced endothelial progenitor cell function.

Purpose of the Study:

  • To review mechanisms of lipoprotein-mediated endothelial injury.
  • To examine endothelial progenitor cell-assisted vascular repair.
  • To address hypercholesterolemia's impact on endothelial progenitor cell function.

Main Methods:

  • Literature review of existing studies.
  • Analysis of mechanisms of endothelial injury and repair.
  • Synthesis of data on hypercholesterolemia and endothelial progenitor cells.

Main Results:

  • Lipoprotein accumulation contributes to endothelial damage.
  • Hypercholesterolemia impairs endothelial progenitor cell availability and function.
  • This dysfunction hinders the vascular repair process.

Conclusions:

  • Hypercholesterolemia exacerbates cardiovascular risk through endothelial injury and impaired repair.
  • Targeting endothelial progenitor cell dysfunction may offer therapeutic strategies.
  • Understanding these mechanisms is crucial for managing cardiovascular disease.