High-density lipoprotein subfractions: current views and clinical practice applications

Area of Science:

• Cardiovascular research
• Lipidology
• Biochemistry

Background:

• High-density lipoprotein (HDL) measurement traditionally relies on total cholesterol content, a simplistic approach.
• HDL's complexity necessitates advanced characterization beyond basic lipid levels.

Purpose of the Study:

• To advocate for higher-resolution HDL measurement techniques.
• To highlight the clinical significance of HDL subfractions, particle structure, and function.

Main Methods:

• Review of scientific advances in HDL characterization.
• Discussion of available clinical techniques for measuring HDL subfractions (cholesterol content, particle concentration).

Main Results:

• HDL subfractions are associated with distinct biological functions.
• Smaller, denser HDL3 particles are generally linked to favorable atheroprotective effects and clinical outcomes.

Conclusions:

• Current HDL measurement standards are insufficient for capturing its complexity.
• Future research should focus on subfractionating HDL based on functional properties for improved clinical utility.