Related Experiment Video
Updated: Jun 17, 2026

Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
Published on: October 12, 2017
Oxidized low-density lipoprotein.
Sampath Parthasarathy1, Achuthan Raghavamenon, Mahdi Omar Garelnabi
1Division of Cardiothoracic Surgery, The Ohio State University Medical Center, Columbus, OH, USA.
Oxidized low-density lipoprotein (Ox-LDL) remains poorly defined despite 25 years of study. This review details Ox-LDL components, biological actions, and preparation methods, highlighting its complex and variable nature.
Area of Science:
- Biochemistry
- Cardiovascular Research
- Lipid Metabolism
Background:
- Oxidized low-density lipoprotein (Ox-LDL) has been investigated for over two decades for its role in atherosclerosis.
- Despite extensive research, Ox-LDL lacks a precise definition and characterization due to its variable composition.
- Its in vivo form and pathophysiological significance are not fully understood.
Purpose of the Study:
- To review the diverse components of Ox-LDL.
- To discuss the known biological actions of these components.
- To outline various methods used for Ox-LDL preparation.
Main Methods:
- Literature review of studies on Ox-LDL composition, biological effects, and preparation techniques.
- Analysis of the variability in Ox-LDL based on source, preparation, storage, and usage.
- Synthesis of information on oxidized fatty acid derivatives, cholesterol oxidation products, and modified proteins within Ox-LDL.
Main Results:
- Ox-LDL is a heterogeneous mixture containing oxidized lipids, cholesterol oxidation products, and modified proteins.
- Component variability is influenced by preparation methods and source materials.
- The exact in vivo structure and formation pathways of Ox-LDL require further elucidation.
Conclusions:
- Ox-LDL is a complex and ill-defined entity with significant implications in cardiovascular disease.
- Understanding its components and preparation is crucial for accurate research.
- Further investigation into its in vivo generation and pathophysiological role is necessary.
Related Concept Videos
Blood Studies for Cardiovascular System III: Serum Lipid Profile
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...
Lipid-derived Compounds in the Human Body
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin, delayed...
Oxidation of Phenols to Quinones
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
Lipids: Dietary Sources and Requirements
Radical Autoxidation
Atherosclerosis I: Introduction