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Opinion: On the Way towards the New Paradigm of Atherosclerosis
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Opinion: On the Way towards the New Paradigm of Atherosclerosis
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Journal Article
Opinion: On the Way towards the New Paradigm of Atherosclerosis
2022
Overview
Atherosclerosis is a multicausal disease characterized by the formation of cholesterol-containing plaque in the pronounced intima nearest to the heart’s elastic-type arteries that have high levels of blood circulation. Plaques are formed due to arterial pressure-induced damage to the endothelium in areas of turbulent blood flow. It is found in the majority of the Western population, including young people. This denies the monogenic mechanism of atherogenesis. In 1988, Orekhov et al. and Kawai et al. discovered that the presence of atherogenic (modified, including oxidized ones) LDLs is necessary for atherogenesis. On the basis of our discovery, suggesting that the overloading of enterocytes with lipids could lead to the formation of modified LDLs, we proposed a new hypothesis explaining the main factors of atherogenesis. Indeed, when endothelial cells are damaged and then pass through the G2 phase of their cell cycle they secrete proteins into their basement membrane. This leads to thickening of the basement membrane and increases its affinity to LDL especially for modified ones. When the enterocyte transcytosis pathway is overloaded with fat, very large chylomicrons are formed, which have few sialic acids, circulate in the blood for a long time, undergo oxidation, and can induce the production of autoantibodies. It is the sialic acids that shield the short forks of the polysaccharide chains to which autoantibodies are produced. Here, these data are evaluated from the point of view of our new model.
Publisher
MDPI AG,MDPI
Subject
/ Atherosclerosis - metabolism
/ Diet
/ Endothelial Cells - metabolism
/ Endothelial Cells - pathology
/ Heart
/ Humans
/ Lipids
/ Lipoproteins, LDL - metabolism
/ Low density lipoprotein receptors
/ Plaque, Atherosclerotic - metabolism
/ Plaque, Atherosclerotic - pathology
/ Proteins
/ Rabbits
/ Review
/ Women
