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HDLs, immunity, and atherosclerosis

Giuseppe D Norata1, Angela Pirillo, Alberico L Catapano

  • 1Department of Pharmacological Sciences, Università degli Studi di Milano, Centro SISA per lo Studio dell'Aterosclerosi, Ospedale Bassini, Cinisello Balsamo, Milan, Italy.

Current Opinion in Lipidology
|September 2, 2011
PubMed

Insights

High-density lipoproteins (HDLs) promote cholesterol efflux from tissues, influencing immune cells and potentially explaining their antiatherosclerotic effects. Understanding these interactions is key to developing new atherogenesis therapies.

Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Lipid Metabolism

Background:

  • High-density lipoproteins (HDLs) exhibit physiological activities contributing to their antiatherosclerotic properties.
  • A primary function of HDLs is facilitating cholesterol efflux from peripheral tissues to the liver for excretion.

Purpose of the Study:

  • To review the physiological activities of HDLs, focusing on their role in cholesterol efflux and immune cell modulation.
  • To explore the impact of HDL composition variations on immune responses during inflammation and atherogenesis.

Main Methods:

  • Literature review of studies investigating HDL function in cholesterol metabolism and immune cell interactions.
  • Analysis of research on HDL's role as a reservoir for biologically active substances.

Main Results:

  • HDL-mediated cholesterol efflux modulates immune cell responses, including those of monocyte-macrophages, B lymphocytes, and T lymphocytes, which are implicated in atherosclerosis.
  • HDL serves as a reservoir for bioactive substances that influence the immune system, with its composition dynamically changing during inflammatory processes.

Conclusions:

  • Further understanding of HDL-mediated interactions and the targeted delivery of its associated bioactive substances is crucial for elucidating HDL's role in atherogenesis.
  • Investigating these mechanisms may offer novel therapeutic strategies for preventing or treating atherosclerosis.
Abstract

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