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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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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...
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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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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 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)...
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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...
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Computationally Modelling Cholesterol Metabolism and Atherosclerosis.

Callum Davies1, Amy E Morgan2, Mark T Mc Auley1

  • 1Department of Physical, Mathematical and Engineering Sciences, University of Chester, Chester CH1 4BJ, UK.

Biology
|August 26, 2023
PubMed
Summary
This summary is machine-generated.

This study integrates cholesterol metabolism and atherosclerosis models to understand cardiovascular disease. The new model identifies interventions to lower low-density lipoprotein cholesterol and prevent plaque formation.

Keywords:
atherosclerosiscardiovascular disease (CVD)cholesterollow density lipoprotein cholesterol (LDL-C)mathematical modelplaque

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Area of Science:

  • Physiology
  • Computational Biology
  • Pathology

Background:

  • Cardiovascular disease (CVD) is the leading global cause of mortality, driven by atherosclerosis.
  • Elevated low-density lipoprotein cholesterol (LDL-C) is the primary risk factor for atherosclerosis.
  • Existing mathematical models explore cholesterol metabolism and atherosclerosis dynamics separately due to scale differences.

Purpose of the Study:

  • To develop a novel integrated mathematical model of whole-body cholesterol metabolism and atherosclerotic plaque formation.
  • To bridge the gap between macroscale physiological processes and microscale pathological mechanisms.
  • To utilize the integrated model for identifying therapeutic interventions.

Main Methods:

  • Combined a mathematical model of cholesterol metabolism with a model of atherosclerotic plaque formation.
  • Validated the integrated model's ability to reproduce outputs from parent models.
  • Employed the new model to simulate and identify interventions.

Main Results:

  • The integrated model successfully reproduces the behavior of its constituent models.
  • Demonstrated the model's capability to simulate the interplay between cholesterol metabolism and atherosclerosis.
  • Identified potential interventions targeting LDL-C reduction and plaque inhibition.

Conclusions:

  • The integrated model provides a unified framework for studying cholesterol metabolism and atherosclerosis.
  • This approach facilitates the discovery of novel therapeutic strategies for CVD.
  • The model serves as a valuable tool for understanding and mitigating atherosclerosis progression.