title: The oxidation hypothesis of atherogenesis: the role of oxidized phospholipids and HDL.
abstract: For more than two decades, there has been continuing evidence of lipid oxidation playing a central role in atherogenesis. The oxidation hypothesis of atherogenesis has evolved to focus on specific proinflammatory oxidized phospholipids that result from the oxidation of LDL phospholipids containing arachidonic acid and that are recognized by the innate immune system in animals and humans. These oxidized phospholipids are largely generated by potent oxidants produced by the lipoxygenase and myeloperoxidase pathways. The failure of antioxidant vitamins to influence clinical outcomes may have many explanations, including the inability of vitamin E to prevent the formation of these oxidized phospholipids and other lipid oxidation products of the myeloperoxidase pathway. Preliminary data suggest that the oxidation hypothesis of atherogenesis and the reverse cholesterol transport hypothesis of atherogenesis may have a common biological basis. The levels of specific oxidized lipids in plasma and lipoproteins, the levels of antibodies to these lipids, and the inflammatory/anti-inflammatory properties of HDL may be useful markers of susceptibility to atherogenesis. Apolipoprotein A-I (apoA-I) and apoA-I mimetic peptides may both promote a reduction in oxidized lipids and enhance reverse cholesterol transport and therefore may have therapeutic potential.
authors.affiliation: Division of Cardiology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. mnavab@mednet.ucla.edu
authors.forename: Mohamad
authors.initials: M
authors.lastname: Navab
authors.forename: G M
authors.initials: GM
authors.lastname: Ananthramaiah
authors.forename: Srinivasa T
authors.initials: ST
authors.lastname: Reddy
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Van Lenten
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Ansell
authors.forename: Gregg C
authors.initials: GC
authors.lastname: Fonarow
authors.forename: Kambiz
authors.initials: K
authors.lastname: Vahabzadeh
authors.forename: Susan
authors.initials: S
authors.lastname: Hama
authors.forename: Greg
authors.initials: G
authors.lastname: Hough
authors.forename: Naeimeh
authors.initials: N
authors.lastname: Kamranpour
authors.forename: Judith A
authors.initials: JA
authors.lastname: Berliner
authors.forename: Aldons J
authors.initials: AJ
authors.lastname: Lusis
authors.forename: Alan M
authors.initials: AM
authors.lastname: Fogelman
mesh_terms: D000818:Animals; D001161:Arteriosclerosis / Q000378:metabolism* / Q000473:pathology*; D006801:Humans; D007249:Inflammation / Q000276:immunology / Q000473:pathology; D008075:Lipoproteins, HDL / Q000378:metabolism*; D008077:Lipoproteins, LDL / Q000378:metabolism; D010084:Oxidation-Reduction; D010743:Phospholipids / Q000378:metabolism*
chemical_list: D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D010743:Phospholipids