lipoproteins(redirected from high-density lipoproteins)
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Related to high-density lipoproteins: LDL
lipoproteinsAny complex of fats with protein. A conjugated protein consisting of a simple protein combined with a fat (lipid) group. The blood lipoproteins, which are the cholesterol carriers of the body, are classified by density, in accordance with the proportions of protein, as very low density (VLDL), low density (LDL) and high density (HDL). LDLs contain relatively large amounts of cholesterol. HDLs contain 50% of protein and only 20% of cholesterol. LDLs transport lipids to muscles and to fat stores and are associated with the arterial disease ATHEROSCLEROSIS and thus heart disease and STROKE. HDLs are protective against these diseases because their main role is to transport cholesterol from the periphery back to the liver. They also carry paraoxanase enzymes that limit oxidative modification of LDLs necessary before cholesterol can be laid down in arterial walls. Blood concentration of HDL cholesterol shows a strong inverse correlation with the risk of coronary heart disease.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
The packages in which cholesterol and triglycerides travel throughout the body.
Mentioned in: Lipoproteins Test
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
Patient discussion about lipoproteins
Q. what are the sources for high density lipoprotein? I have heard that high density lipoprotein is good for heart. What differences does it make in heart’s health and what are the sources for high density lipoprotein?
A. Hi Liam, it is very important that we have high density lipoprotein (HDL) in our body. The fact is that the HDL is formed inside the body. They are known as good cholesterol as they are famous for their protection for heart against the heart diseases. It has been found that Vitamin B3 or Niacin consumption increases the count of HDL. It’s good to cut on the diet having more of saturated fats and oils, which increases the chances of heart attack.More discussions about lipoproteins
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