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Updated: Mar 3, 2026
07:29
Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
Published on: October 12, 2017
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Cholesterol and related sterols autoxidation
Chiara Zerbinati1, Luigi Iuliano1
1Vascular Biology and Mass Spectrometry Laboratory, Department of Medical Sciences and Biotechnology, Sapienza University of Roma, Latina, Italy.
Free Radical Biology & Medicine
|April 22, 2017
Summary
Oxysterols, derived from cholesterol oxidation, are generated via free radical or reactive oxygen species pathways. Their study is crucial for understanding oxidative stress and potential biomarker applications.
Area of Science:
- Biochemistry
- Lipid Metabolism
- Oxidative Stress Research
Background:
- Cholesterol is a vital lipid essential for cell membranes, hormone synthesis, and vitamin D production.
- Cholesterol metabolism involves enzymatic modification of its core structure and side chain.
- Oxysterols, oxygenated cholesterol derivatives, are increasingly recognized for their biological significance.
Purpose of the Study:
- To explore the mechanisms of oxysterol formation.
- To investigate the biological activities and roles of oxysterols.
- To assess the utility of oxysterols as biomarkers for oxidative stress.
Main Methods:
- Enzymatic synthesis of oxysterols.
- Autoxidation studies (Type I and Type II mechanisms).
- Analysis of reactive oxygen species involved in cholesterol oxidation.
Main Results:
- Cholesterol can be oxidized via free radical-initiated (Type I) or non-radical reactive oxygen species (Type II) pathways.
- Oxysterols are formed through both enzymatic and autoxidation processes.
- The reactivity of cholesterol towards reactive species highlights the importance of oxysterol research.
Conclusions:
- Oxysterol formation is a complex process involving various oxidative mechanisms.
- Oxysterols hold potential for understanding oxidative stress and disease.
- Oxysterols may serve as valuable non-invasive biomarkers in clinical settings.
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