What are the classes of lipoproteins in the blood, Biology

Q. What are the classes of lipoproteins in the blood?

Blood lipids (cholesterol, triglycerides and phospholipids) being insoluble in blood need a ship to travel in our body; it therefore usually gets bound to proteins and form complex particles called lipoproteins which vary in size, composition and density. There are five classes of lipoproteins in the blood. These include:

1. Chylomicrons: These are formed in the intestines when a Fatty meal is taken. These pass into the blood through the lymphatics. It contains nearly 90% of triglycerides and 5% cholesterol.

2. Very Low Density Lipoproteins (I%DL): These are produced by the liver and are the main transporters of triglycerides. VLDL generates most of the LDL in the plasma. It contains about 60% of triglycerides and 10% cholesterol.

3. Intermediary Density Lipoprotein (IDL): This is rich in cholesterol and triglyceride. It contains about 40% of triglycerides and 10% cholesterol.

4. Low Density Lipoproteins (LDL): This type of lipoprotein is most artherogenic of all the lipoproteins and is responsible for the atherosclerosis in the vessels. It has 10% of triglycerides and 45% of cholesterol.

5. High Density Lipoprotein (HDL): The high HDL content is associated with decrease in the risk of atherosclerosis. It contains about 3% triglycerides and 20% cholesterol.

Posted Date: 7/4/2013 1:14:34 AM | Location : United States

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