Related Experiment Video

Updated: Jun 13, 2026

Cholesterol Efflux Assay
07:54

Cholesterol Efflux Assay

Published on: March 6, 2012

Future therapeutic directions in reverse cholesterol transport

Amit V Khera1, Daniel J Rader

  • 1Institute for Translational Medicine and Therapeutics and Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA.

Current Atherosclerosis Reports
|April 29, 2010
PubMed

Insights

Measuring high-density lipoprotein (HDL) functionality, not just levels, is key for developing new therapies. Understanding reverse cholesterol transport (RCT) flux is crucial for treating atherosclerotic cardiovascular disease.

Area of Science:

  • Biochemistry
  • Cardiovascular Medicine
  • Molecular Biology

Background:

  • High-density lipoprotein (HDL) cholesterol levels inversely correlate with atherosclerotic cardiovascular disease (ASCVD).
  • Pharmacologic enhancement of HDL metabolism for ASCVD therapy has faced challenges.
  • Static HDL levels may not accurately reflect HDL functionality in reverse cholesterol transport (RCT).

Purpose of the Study:

  • To review the importance of quantifying RCT flux.
  • To discuss current strategies for measuring RCT.
  • To highlight therapeutic approaches for augmenting macrophage RCT.

Main Methods:

  • Review of current literature on RCT mechanisms and quantification.
  • Analysis of molecular underpinnings of cholesterol efflux and transport.
  • Discussion of therapeutic strategies targeting macrophage RCT.

Main Results:

  • RCT is the process of returning excess cellular cholesterol to the liver for excretion.
  • Quantifying RCT flux is critical for assessing therapeutic efficacy.
  • Multiple strategies exist to enhance macrophage RCT.

Conclusions:

  • Assessing HDL functionality via RCT flux is vital for effective ASCVD therapies.
  • Therapeutic strategies focus on improving cholesterol efflux, HDL acceptor function, and hepatic excretion.
  • Further research into RCT mechanisms can guide novel treatment development.

More Related Videos

High-throughput Nitrobenzoxadiazole-labeled Cholesterol Efflux Assay08:18

High-throughput Nitrobenzoxadiazole-labeled Cholesterol Efflux Assay

Published on: January 7, 2019

Related Concept Videos

Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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.
Considering cholesterol and...
Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

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...
Lipid Absorption01:24

Lipid Absorption

Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
Atherosclerosis III: Management01:26

Atherosclerosis III: Management

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...
Carrier-Mediated Transport01:06

Carrier-Mediated Transport

Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...