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Cholesterol is the principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. [3] [4] Cholesterol is biosynthesized by all animal cells [citation needed] and is an essential structural and signaling component of animal cell membranes.
Cholesterol total synthesis in chemistry describes the total synthesis of the complex biomolecule cholesterol and is considered a great scientific achievement. [1] The research group of Robert Robinson with John Cornforth ( Oxford University ) published their synthesis in 1951 [ 2 ] and that of Robert Burns Woodward with Franz Sondheimer ...
Blood lipids (or blood fats) are lipids in the blood, either free or bound to other molecules.They are mostly transported in a phospholipid capsule, and the type of protein embedded in this outer shell determines the fate of the particle and its influence on metabolism.
where H is HDL cholesterol, L is LDL cholesterol, C is total cholesterol, T are triglycerides, and k is 0.20 if the quantities are measured in mg/dL and 0.45 if in mmol/L. There are limitations to this method, most notably that samples must be obtained after a 12 to 14 h fast and that LDL-C cannot be calculated if plasma triglyceride is >4.52 ...
Salkowski test can also be used to test the presence of indoles (crystalline alkaloids that are a degradation products of proteins, containing tryptophan [10]). In such cases a sample is treated with nitric acid and 2% solution of potassium nitrite , with positive reaction being shown by presence of red colour.
Remnant cholesterol is the cholesterol content of triglyceride-rich lipoproteins, which consist of very low-density lipoproteins and intermediate-density lipoproteins with chylomicron remnants. [ 2 ] [ 5 ] Remnant cholesterol is primarily chylomicron and VLDL, and each remnant particle contains about 40 times more cholesterol than LDL.
سبع دول، محيط، وأكثر من ألف ميل بينهم وبين أحلامهم لمستقبل أفضل.
The consumption of saturated fat is generally considered a risk factor for dyslipidemia—abnormal blood lipid levels, including high total cholesterol, high levels of triglycerides, high levels of low-density lipoprotein (LDL, "bad" cholesterol) or low levels of high-density lipoprotein (HDL, "good" cholesterol). These parameters in turn are ...