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Related Experiment Videos

Modified HDL: biological and physiopathological consequences.

Giuseppe Danilo Norata1, Angela Pirillo, Alberico Luigi Catapano

  • 1Department of Pharmacological Sciences, University of Milan, Italy.

Nutrition, Metabolism, and Cardiovascular Diseases : NMCD
|July 11, 2006
PubMed
Summary

High-density lipoprotein cholesterol (HDL-C) protects against coronary heart disease (CHD). HDL modification, through various pathways, can impair its function, potentially promoting atherosclerosis.

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Area of Science:

  • Biochemistry
  • Cardiovascular Science
  • Lipid Metabolism

Background:

  • Epidemiological and clinical studies show an inverse relationship between HDL cholesterol (HDL-C) levels and coronary heart disease (CHD) risk.
  • HDL's cardioprotective effect is attributed to its role in reverse cholesterol transport.
  • Dysfunctional HDL, resulting from structural modifications, can promote atherosclerosis.

Purpose of the Study:

  • To review the mechanisms of HDL modification.
  • To highlight the functional consequences of HDL modification.
  • To identify potential therapeutic targets for reducing HDL modification.

Main Methods:

  • Review of existing epidemiological, clinical, and in vitro studies.
  • Analysis of different pathways leading to HDL modification: non-enzymatic, enzymatic, acute-phase protein association, and metabolic modifications (e.g., glycation).

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Main Results:

  • HDL can be modified through various mechanisms, including non-enzymatic processes, cell-associated enzymes, acute-phase proteins, and glycation.
  • HDL modification can lead to loss of its anti-atherogenic properties and potentially promote atherogenesis.
  • Most available data are from in vitro studies, with limited in vivo evidence.

Conclusions:

  • HDL modification is a significant factor in cardiovascular disease pathogenesis.
  • Understanding the in vivo mechanisms of HDL modification is crucial.
  • Targeting HDL modification pathways may offer novel therapeutic strategies for reducing CHD risk.