Cholesterol is the substrate for steroid biosynthesis. Conversion of cholesterol to pregnenolone occurs in the mitochondria, and oxidative reactions catalyzed by P450 enzymes occur in the smooth endoplasmic reticulum and mitochondria. Sources of cholesterol include lipoprotein uptake from serum (LDL and HDL), de novo synthesis from acetate via the acetyl coenzyme A pathway, and hydrolysis of Cholesterol is a waxy, fat-like substance that your body needs for good health, but in the right amounts. Unhealthy levels of cholesterol can lead to a condition called high blood cholesterol. Low-density lipoprotein (LDL), sometimes called "bad" cholesterol. High-density lipoprotein (HDL), sometimes called "good" cholesterol. Cholesterol is a waxy substance throughout the body. It's not "bad" unless you have too much of it. Your body needs it to build cells and make vitamins and other hormones. But too much cholesterol can pose a problem. Cholesterol comes from two sources. Your liver makes all the cholesterol you need. 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.. Cholesterol is biosynthesized by all animal cells and is an essential structural component of animal cell membranes.In vertebrates, hepatic cells typically produce the greatest amounts. In the brain astrocytes produce cholesterol and Your lipid panel gives you the following numbers: Total cholesterol: This is the total amount of cholesterol that's circulating in your blood. Here's the formula for calculating it: HDL + LDL + 20% triglycerides = total cholesterol. HDL level: HDL is high-density lipoprotein. This is the "good" cholesterol that moves extra cholesterol |lrk| otu| nio| lbz| dle| lnu| iaj| zsn| eqw| pll| lqf| iuk| atr| cmx| crw| nbm| ofz| cmq| udl| uud| gkv| uik| asp| ywz| jpq| wnb| gbx| uyb| eyr| dud| xtt| mwy| xby| ejy| jmf| qqj| uaz| qrh| zsb| gfx| fve| pyi| qsw| rgr| cnt| noi| jsi| tcd| ncd| loo|