Analysis of lipoproteins.. HDL - High Density Lipoproteins. LDL-Low Density Lipoproteins. Chylomicrons. LDL-Low Density Lipoproteins. HDL - High Density Lipoproteins



Lipoproteins is the transfer function of proteins and fat from the blood to different organs of the body different for both oxidized for energy or stored in some cells as cells fatty There are four main types of lipoproteins in plasma containing different ratios of triglycerides and cholesterol Brocna at and ester cholesterol and fat Phosphate, and each type of these proteins has a function different from the others is that they are substantially similar in composition Were divided according to the density as follows:
- Kilo microns (Chylomicrons)
- Lipoproteins very low density (VLDL)
- Low-density lipoproteins (LDL-Low Density Lipoproteins)
- High-density lipoproteins (HDL - High Density Lipoproteins)
The most important assays do them in the laboratory for fattyproteins are:
(A) high-density lipoproteins (HDL - High Density Lipoproteins)
The derivatives of HDL lipoproteins and is also called lipoprotein-type alpha (ά - lipoprotein) and contains 25% - 45% of thecholesterol in addition to phospholipids
HDL carries cholesterol from the blood to the liver where it is a metabolite and extraction of bile and this means that increasing the proportion of HDL in the blood leads to decreasing the level of cholesterol in the blood, which prevents the occurrence of atherosclerosis and that is what is sometimes called good cholesterol or HDL.
The level of HDL in females more than in males because estrogen increases the configuration of your protein to carrycholesterol to the HDL and that females are less prone toatherosclerosis, but with age less than the level of HDL, leading to exposure more to atherosclerosis.
Increase the level of HDL in athletes, while at least obese and smokers.
Normal level of HDL over 40 mg / 100 ml blood (0.83 to 2.5 mmol/ L)
(B) low-density lipoproteins (LDL-Low Density Lipoproteins)
Is one of the lipoproteins, also called lipoprotein-type beta (β - Lipoproteins) is responsible for carrying cholesterol in the blood,which contains 50-75% of it, so the increased level of LDL leads to increased incidence of disease, hardening of the arteries, so-called some bad cholesterol or the bad, and there is an inverse relationship between the level of LDL and the HDL in the blood.
The natural level of LDL in the blood less than 180 mg / 100 ml(0.5 - 3.88 mmol / L)
Are measured by the level of LDL in the blood using the following equation:
LDL Cholesterol (mg / dl) = Total Cholesterol - HDL Cholesterol - Triglyceride
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This equation is valid when the concentration of Triglyceride in the blood of more than 400 mg / dl, so must be mentioned herethat the direct way to measure LDL more accurate account of the process:
LDL Cholesterol (mmol / L) = Total Cholesterol - HDL Cholesterol - Triglyceride
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Where:
Triglyceride is the triglycerides
LDL Cholesterol is a low-density lipoproteins
HDL Cholesterol is a high-density lipoproteins
Total Cholesterol is a total cholesterol