chylomicrons


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chylomicrons

Microscopic globules, 80 to 1000 nanometres in diameter, of fat, phospholipids, cholesterol, fat-soluble vitamins and other materials. Chylomicrons are formed by the epithelium of the small intestine and are found in the blood during the ingestion of dietary fats, etc. The size of chylomicrons relates to the proportion of fats in the diet, being greatest after high-fat meals. Chylomicrons, and some of their contents are broken don in the liver and the constituents released.

chylomicrons (kī´lōmī´kronz)

n.pl the tiny lipoproteins of approximately 2% protein that convey dietary fat throughout the body.
References in periodicals archive ?
HDL-C results become more variable (both positive and negative biases) when abnormal amounts of lipoproteins such as VLDL and chylomicrons are present.
The rest comes from remnants of chylomicrons and of VLDL.
Data showed that breakdown of chylomicrons produced after meals was greatly and significantly improved at both 14 and 52 weeks following one-time Glybera administration.
The lipoprotein classification includes chylomicron, very low-density lipoprotein (VLDL), intermediate-density lipoprotein (IDL), low-density lipoprotein (LDL), and high-density lipoprotein (HDL).
The best recognized role of apo E in lipid metabolism is as a ligand for receptor mediated clearance of chylomicron and VLDL remnants.
Postoperative chylothorax was confirmed by the presence of chylomicrons in the pleural effusion and triglyceride levels above 6.
Future studies should be aimed at assessing the metabolic machinery of the Fulani population, particularly their ability to incorporate dietary TFAs into chylomicrons and to clear TFAs from the blood circulation.
Lipolysis of triglycerides (requiring PEPCK) from lipoprotein fractions, such as chylomicrons and VLDLs, is the source of the glycerol for adipocytes.
TAG is then packaged into chylomicrons and passed in the lymph and bloodstream for storage as fat, or eventually to the liver for lipid degradation and/or synthesis.
The VLDL-Cholesterol and, if present, Chylomicrons and [beta]-VLDL-Cholesterol, will accumulate in a floating layer, with the infranant containing primarily LDL-Cholesterol and HDL-Cholesterol plus any IDL-Cholesterol and Lp(a) that may be present.
When absorbed within the intestinal cells, the FAs are re-esterified to triglycerides and integrated into lipid transport particles called chylomicrons, together with cholesterol.