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The triglycerides are not stable in HDL, but are degraded by hepatic lipase so that, finally, small HDL particles are left, which restart the uptake of cholesterol from cells. [2] The cholesterol delivered to the liver is excreted into the bile and, hence, intestine either directly or indirectly after conversion into bile acids. Delivery of HDL ...
Reverse cholesterol transport is a multi-step process resulting in the net movement of cholesterol from peripheral tissues back to the liver first via entering the lymphatic system, then the bloodstream. [1] HDL is first produced in the liver in a cholesterol-free form. As a result, it appears discoidal in shape.
1071 n/a Ensembl ENSG00000087237 n/a UniProt P11597 n/a RefSeq (mRNA) NM_000078 NM_001286085 n/a RefSeq (protein) NP_000069 NP_001273014 n/a Location (UCSC) Chr 16: 56.96 – 56.98 Mb n/a PubMed search n/a Wikidata View/Edit Human Cholesteryl ester transfer protein (CETP), also called plasma lipid transfer protein, is a plasma protein that facilitates the transport of cholesteryl esters and ...
All cells use and rely on fats and cholesterol as building blocks to create the multiple membranes that cells use both to control internal water content and internal water-soluble elements and to organize their internal structure and protein enzymatic systems. The outer shell of lipoprotein particles have the hydrophilic groups of phospholipids ...
ABCA1 mediates the efflux of cholesterol and phospholipids to lipid-poor apolipoproteins (apoA1 and apoE) (reverse cholesterol transport), which then form nascent high-density lipoproteins (HDL). It also mediates the transport of lipids between Golgi and cell membrane .
HDL cholesterol provides extreme benefits to the body and is vital in sustaining the fluidity of natural membranes. [6] HDL cholesterol must be maintained at a certain level to ensure normal cell growth and reproduction. The HDL capability of absorption of cholesterol and transport to the liver, aids in the removal of cholesterol in the body. [7]
Cholesterol is a cell signaling molecule that is highly regulated in eukaryotic cell membranes. [1] [2] [3] In human health, its effects are most notable in inflammation, metabolic syndrome, and neurodegeneration. [4]
Apolipoprotein A-IV (apoA4) is present in chylomicrons, very-low-density lipoproteins (VLDL), and HDL. It is thought to act primarily in reverse cholesterol transport [4] and intestinal lipid absorption via chylomicron assembly and secretion. ApoA-IV synthesized in hypothalamus is suggested to be a satiating factor which regulate the food ...