Related Experiment Video
Updated: Jun 26, 2026

07:54
Cholesterol Efflux Assay
Published on: March 6, 2012
Reverse cholesterol transport in type 2 diabetes mellitus
1Department of Medicine, University of Hong Kong, Hong Kong. kcbtan@hkucc.hku.hk
Diabetes, Obesity & Metabolism
|January 30, 2009
Summary
High-density lipoprotein (HDL) protects against atherosclerosis by facilitating cholesterol removal. This review examines reverse cholesterol transport (RCT) abnormalities in type 2 diabetes and potential HDL-targeted therapies.
Area of Science:
- Cardiovascular Science
- Metabolic Disorders
- Lipid Metabolism
Background:
- High-density lipoprotein (HDL) confers protection against atherosclerosis via multiple mechanisms.
- Key anti-atherogenic properties include promoting cellular cholesterol efflux and reverse cholesterol transport (RCT).
- RCT is a vital pathway for cholesterol homeostasis, moving it from peripheral tissues to the liver for excretion.
Purpose of the Study:
- To review the current understanding of RCT in the context of type 2 diabetes mellitus.
- To identify and discuss abnormalities in RCT associated with type 2 diabetes.
- To explore therapeutic strategies targeting HDL and RCT for managing cardiovascular risk in diabetes.
Main Methods:
- Literature review of studies on HDL, RCT, and type 2 diabetes.
- Analysis of the molecular and cellular mechanisms of RCT.
- Examination of existing and potential therapeutic interventions.
Main Results:
- HDL's protective functions against atherosclerosis are multifaceted, involving cholesterol efflux, antioxidant, anti-inflammatory, and anticoagulant effects.
- The efficiency of RCT is contingent upon cellular lipid mobilization and HDL metabolism dynamics.
- Limited knowledge currently exists regarding RCT in individuals with type 2 diabetes, a population with elevated cardiovascular risk.
Conclusions:
- Abnormalities in RCT may contribute to the heightened cardiovascular risk observed in type 2 diabetes.
- Therapeutic strategies aimed at enhancing HDL function and RCT hold promise for mitigating atherosclerosis in diabetic patients.
- Further research is warranted to fully elucidate RCT's role in diabetes and to develop effective treatments.
Related Concept Videos
Type II Diabetes II: Pathophysiology
PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
Type II Diabetes I: Introduction
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
Carbohydrate Metabolism
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in the...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in the...
Type I Diabetes II: Pathophysiology
Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
Diabetes Mellitus: Type 2 and Gestational
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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...
Considering cholesterol and...
