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high-density lipoprotein |
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lipoprotein /lipo·pro·tein/ (-prō´tēn) a complex of lipids and apolipoproteins, the form in which lipids are transported in the blood.
α-lipoprotein , alpha lipoprotein one with electrophoretic mobility equivalent to that of the α1-globulins, e.g., high-density lipoprotein. β-lipoprotein , beta lipoprotein one with electrophoretic mobility equivalent to that of the β-globulins, e.g., low-density lipoprotein. floating beta lipoproteins β. high-density lipoprotein (HDL) a class of plasma lipoproteins that promote transport of cholesterol from extrahepatic tissue to the liver for excretion in the bile; serum levels have been negatively correlated with premature coronary heart disease. intermediate-density lipoprotein (IDL) a class of lipoproteins formed in the degradation of very-low-density lipoproteins; some are cleared rapidly into the liver and some are degraded to low-density lipoproteins. low-density lipoprotein (LDL) a class of plasma lipoproteins that transport cholesterol to extrahepatic tissues; high serum levels have been correlated with premature coronary heart disease. Lp(a) lipoprotein a lipoprotein particle containing apolipoprotein B-100 as well as an antigenically unique apolipoprotein; its occurrence at high levels in plasma has been correlated with increased risk of heart disease. pre-β-lipoprotein , pre-beta lipoprotein very-low-density lipoprotein sinking pre-β-lipoprotein Lp(a) l. very-high-density lipoprotein (VHDL) a class of lipoproteins composed predominantly of proteins and also containing a high concentration of free fatty acids. very-low-density lipoprotein (VLDL) a class of lipoproteins that transport triglycerides from the intestine and liver to adipose and muscle tissues; they contain primarily triglycerides with some cholesteryl esters.
High-density lipoprotein (HDL) A type of lipoprotein that protects against coronary artery disease by removing cholesterol deposits from arteries or preventing their formation. Mentioned in: Cholesterol Test
high-density lipoprotein (HDL) Etymology: ME, heigh, high; L, densus, thick; Gk, lipos, fat, proteios, first rank a plasma protein made mainly in the liver and containing about 50% lipoprotein (apoprotein) along with cholesterol, triglycerides, and phospholipid. It is involved in transporting cholesterol and other lipids to the liver to be disposed. Higher levels of high-density lipoprotein are associated with decreased cardiac risk profiles. See also low-density lipoprotein, very low-density lipoprotein. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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