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Quantitation of Endothelial Cell Adhesiveness In Vitro
10:24

Quantitation of Endothelial Cell Adhesiveness In Vitro

Published on: June 18, 2015

Effect of high-density lipoproteins on the expression of adhesion molecules in endothelial cells

Philip J Barter1, Paul W Baker, Kerry-Anne Rye

  • 1Lipid Research Laboratory, Hanson Institute for Medical Research, Adelaide, Australia. philip.barter@adelaide.edu.au

Current Opinion in Lipidology
|June 5, 2002
PubMed

Insights

High-density lipoproteins (HDLs) may protect against atherosclerosis by removing cholesterol from macrophages and inhibiting vascular cell adhesion molecule expression in endothelial cells. Further research is needed to clarify the exact mechanisms and in vivo contributions of these effects.

Area of Science:

  • Cardiovascular Science
  • Lipid Metabolism
  • Atherosclerosis Research

Background:

  • High-density lipoproteins (HDLs) are known for their role in reverse cholesterol transport.
  • HDLs are increasingly recognized for potential anti-atherogenic properties beyond cholesterol efflux.
  • Early events in atherosclerosis involve endothelial cell activation and adhesion molecule expression.

Purpose of the Study:

  • To explore the mechanisms by which HDLs protect against atherosclerosis.
  • To investigate the role of HDLs in inhibiting vascular cell adhesion molecule expression.
  • To understand the influence of HDL composition on its inhibitory activity.

Main Methods:

  • In vitro studies using native and reconstituted HDLs.
  • In vivo studies in animal models (mice and pigs).
  • Analysis of phospholipid composition's effect on HDL activity.

Main Results:

  • HDLs promote cholesterol efflux from macrophages.
  • HDLs inhibit vascular cell adhesion molecule expression in activated endothelial cells in vitro.
  • Inhibition of adhesion molecule expression by HDLs was observed in some in vivo studies but not consistently.

Conclusions:

  • HDLs possess multiple potential mechanisms for protecting against atherosclerosis.
  • The inhibition of endothelial adhesion molecule expression is a potential anti-atherogenic effect of HDLs.
  • The precise mechanism and in vivo significance of HDL's effect on adhesion molecules require further investigation.

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