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Cholesterol: Significance and Regulation01:29

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Related Experiment Video

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High-throughput Nitrobenzoxadiazole-labeled Cholesterol Efflux Assay
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HDL cholesterol and ASCVD risk stratification: A debate.

Philip Barter1, Jacques Genest2

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High-density lipoprotein cholesterol (HDL-C) effectively predicts atherosclerotic cardiovascular disease (ASCVD) risk. However, its direct causal role is debated, prompting a search for better biomarkers of HDL function.

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Area of Science:

  • Cardiology
  • Biochemistry
  • Preventive Medicine

Background:

  • High-density lipoproteins (HDLs) play a role in cardiovascular health.
  • HDL cholesterol (HDL-C) has been a recognized predictor of atherosclerotic cardiovascular disease (ASCVD) events for decades.
  • Recent research questions the direct protective role of HDLs despite HDL-C's predictive power.

Purpose of the Study:

  • To review the clinical utility of HDL-C in predicting ASCVD risk.
  • To evaluate the ongoing debate surrounding HDL-C's role in cardiovascular risk stratification.
  • To discuss the limitations of HDL-C and the need for improved biomarkers.

Main Methods:

  • Review of existing literature and clinical studies on HDL-C and ASCVD.
  • Analysis of epidemiological data and Mendelian randomization studies.
  • Discussion of pharmacological interventions targeting HDL-C.

Main Results:

  • HDL-C concentration remains a robust, independent, inverse predictor of ASCVD events.
  • The direct causal link between HDL-C levels and ASCVD protection is questioned by some studies.
  • HDL's beneficial functions are only weakly correlated with HDL-C levels.
  • Pharmacological attempts to increase HDL-C have not improved outcomes.

Conclusions:

  • HDL-C is a valuable tool for ASCVD risk stratification.
  • The direct causality and functional significance of HDL-C require further investigation.
  • Developing better biomarkers for HDL function is crucial for future cardiovascular risk prediction and clinical decision-making.