Macrophage Scavenger Receptors and Atherosclerosis
نویسندگان
چکیده
منابع مشابه
Macrophage scavenger receptors and foam cell formation.
Scavenger receptors bind and internalize modified low-density lipoprotein (LDL) and high-density lipoprotein (HDL). Because the expression of scavenger receptors is not down-regulated by cholesterol, macrophages (Mphi) expressing scavenger receptors can internalize substantial quantities of cholesteryl ester from oxidized LDL and HDL, leading to foam cell formation. Mphi express several differe...
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Atherosclerotic vascular disease arises as a consequence of the deposition and retention of serum lipoproteins in the artery wall. Macrophages in lesions have been shown to express > or = 6 structurally different scavenger receptors for uptake of modified forms of low-density lipoproteins (LDLs) that promote the cellular accumulation of cholesterol. Because cholesterol-laden macrophage foam cel...
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In atherogenesis, elevated plasma levels of low density lipoprotein (LDL) lead to the chronic presence of LDL in the arterial wall. There, LDL is modified (eg, oxidized), and these modified lipoproteins activate endothelial cells, which attract circulating monocytes. These monocytes enter the vessel wall, differentiate into macrophages, and subject the modified lipoproteins to endocytosis throu...
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The existence of a cell surface receptor, now known as the macrophage scavenger receptor A I/II (MSR-A), was inferred from early studies based on ligand binding analyses. Description of this binding activity, with acetylated low density lipoprotein (LDL) used as a ligand, was important because it provided a mechanism for the formation of foam cells in vivo and because the activity of this recep...
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Recent studies have identified the liver X receptors (LXR alpha and LXR beta) as important regulators of cholesterol metabolism and transport. LXRs control transcription of genes critical to a range of biological functions including regulation of high density lipoprotein cholesterol metabolism, hepatic cholesterol catabolism, and intestinal sterol absorption. Although LXR activity has been prop...
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ژورنال
عنوان ژورنال: The journal of the Japanese Society of Lymphoreticular Tissue research
سال: 1998
ISSN: 1883-681X,1342-9248
DOI: 10.3960/jslrt1997.38.261