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  • Title: [Olive oil dietary supplementation decreases susceptibility of LDL to oxidation and its uptake by macrophages].
    Author: Aviram M, Kassem E.
    Journal: Harefuah; 1993 Jan 01; 124(1):1-4, 64. PubMed ID: 8436301.
    Abstract:
    In atherogenesis, both peroxidation of low density lipoprotein (LDL) and accumulation of cholesterol in macrophages are involved. An oleic acid-rich diet was recently shown to reduce the susceptibility of rabbit and human LDL to in vitro oxidation. We therefore supplemented the diet of 10 normal men for 2 weeks with 50 g/d of olive oil, which is rich in oleic acid. This resulted in enrichment of their LDL with oleic acid (C18:1) and with sitosterol. After only 1 week LDL susceptibility to in vitro oxidation was significantly reduced, by 30% (p < 0.01). Macrophage uptake of LDL by the J-774A.1 macrophage-like cell line was reduced by 61%. We conclude that an olive oil-enriched diet possesses antiatherogenic properties, since it reduces the susceptibility of LDL to in vitro oxidation and inhibits uptake of LDL by macrophages.
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