Abstract

CARVAJAL CARVAJAL, Carlos. LDL oxidada y la aterosclerosis. Med. leg. Costa Rica [online]. 2015, vol.32, n.1, pp.161-169. ISSN 2215-5287.

The term “oxidized LDL” is used to describe a wide variety of LDL preparations that have oxidatively modified ex vivo under defined conditions, or isolated from biological sources. The oxidation of LDL is a complex process during which the protein and the lipids undergo oxidative changes and form complex products. Ox-LDL is believed to play a key role in the initiation and progression of atherogenesis characterized by chronic inflammation, accumulation of lipids and vascular cell modifications in the arterial wall. Unlike native LDLs, ox-LDLs are not recognized by the LDL receptors, but are taken up in a non-regulated manner by the scavenger receptors in vascular cells. This process leads to the accumulation of cholesterol in the vascular cells, forming foam cells, the hallmark of the atherosclerosis lesión. Increased levels of oxidized LDL have been demostrated in patients with coronary artery disease and it suggests that the plasma level of oxidized LDL may be a marker of coronary artery disease (CAD).

Keywords : Atherosclerosis; cholesterol; oxidized low density lipoprotein.

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