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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
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Atherosclerosis I: Introduction01:30

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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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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.
Considering cholesterol and...
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Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
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Atherosclerosis III: Management01:26

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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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Related Experiment Video

Updated: May 1, 2026

Using Human Induced Pluripotent Stem Cell-derived Hepatocyte-like Cells for Drug Discovery
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Calculation of LDL apoB.

Allan D Sniderman1, André J Tremblay2, Jacqueline De Graaf3

  • 1Mike Rosenbloom Laboratory for Cardiovascular Research, McGill University Health Centre, Room H7.22, Royal Victoria Hospital, 687 Pine Avenue West, Montreal, Quebec H3A 1A1, Canada.

Atherosclerosis
|April 22, 2014
PubMed
Summary
This summary is machine-generated.

The Hattori formula accurately calculates LDL apoB in patients with triglycerides <3.0 mmol/L. However, the formula requires correction for patients with higher triglyceride levels to improve LDL apoB calculation accuracy.

Keywords:
Calculated LDL apoBTotal apoBVLDL apoB

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Area of Science:

  • Clinical Chemistry
  • Cardiovascular Medicine
  • Lipidology

Background:

  • Low-density lipoprotein (LDL) apolipoprotein B (apoB) is a key marker for cardiovascular risk.
  • Accurate measurement of LDL apoB is crucial for risk stratification and treatment decisions.
  • Existing formulas for calculating LDL apoB require validation in diverse patient populations.

Purpose of the Study:

  • To evaluate the accuracy of the Hattori formula for calculating LDL apoB.
  • To compare calculated LDL apoB with measured LDL apoB in a large patient cohort.
  • To identify conditions under which the Hattori formula may require adjustment.

Main Methods:

  • A cohort of 2178 patients from a tertiary care lipid clinic was studied.
  • Calculated LDL apoB using the Hattori formula was compared to LDL apoB measured by ultracentrifugation.
  • Statistical analysis was performed to assess the agreement and derive regression models.

Main Results:

  • Significant discordance was observed between calculated and measured LDL apoB in patients with plasma triglycerides ≥ 3.0 mmol/L.
  • In patients with triglycerides <3.0 mmol/L, a strong correlation (r > 0.91) was found between calculated and measured LDL apoB.
  • A specific regression equation was derived for accurate LDL apoB calculation in patients with triglycerides <3.0 mmol/L.

Conclusions:

  • The Hattori formula provides reasonably accurate LDL apoB calculations when plasma triglycerides are below 3.0 mmol/L.
  • The formula necessitates correction based on derived regression models for improved accuracy in patients with lower triglyceride levels.
  • These findings support the use of a modified calculation for LDL apoB in specific patient subgroups.