cholesterol

Definition of cholesterol in English English dictionary: A sterol lipid synthesized by the liver and transported in the bloodstream to the membranes of all animal cells; it plays a central role in many biochemical processes and, as a lipoprotein that coats the walls of blood vessels, is associated with cardiovascular disease; a waxy substance, produced naturally by the liver and also found in foods, that circulates in the blood and helps maintain tissues and cell membranes Excess cholesterol in the body can contribute to atherosclerosis and high blood pressure (Read about "Cholesterol"); A soft, waxy substance found among the fats in the bloodstream and in all the body's cells Cholesterol can undergo various pathways that result in the synthesis of various steroids It is also an important determinant of membrane fluidity, and an improper amount in the body can lead to membrane instability, which leads to cell death; – an important component of body cells, cholesterol is involved in the formation of hormones and bile salts, as will as the transport of fats in the bloodstream; a waxy, fat-like substance present in every cell in the body and in many foods Some cholesterol in the blood is necessary - but a high level can lead to heart disease; Cholesterol is not a fat, but rather a fat-like substance classified as a lipid Cholesterol is vital to life and is found in all cell membranes It is necessary for the production of bile acids and steroid hormones Dietary cholesterol is found only in animal foods Abundant in organ meats and egg yolks, cholesterol is also contained in meats and poultry Vegetable oils and shortenings are cholesterol-free; an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues; a type of fat present in the blood that is the prime cause of atherosclerosis See background information on cholesterol; a substance normally made by the body, but also found in foods from animal sources, like beef, eggs, and butter Too much cholesterol in the body can lead to narrowing and blockage of the arteries, especially those that feed the heart and keep it healthy High cholesterol can also cause the formation of gallstones Ideally, blood cholesterol levels should be less than 200mg/dL; A fatty substance made by the body and found in some foods Cholesterol is deposited in the arteries in coronary artery disease; A fat-like substance needed for the development body cells Cholesterol is both produced by the body and found in animal foods Although it is a necessary substance, if levels of cholesterol are too high it can be deposited on the artery wall, narrowing or blocking blood flow and leading to coronary heart disease; A substance found especially in foods high in animal fats Cholesterol can build up on the walls of arteries, leading to narrowing or "hardening" of the arteries, a condition known as atherosclerosis; A fatty substance circulating in the blood and present in the tissues that is produced by the body and also comes from the diet In excess amounts it may be deposited in arterial walls as athreosclerotic plaques It circulates in two forms, HDL and LDL cholesterol; Cholesterol is a substance that exists in the fat, tissues, and blood of all animals. Too much cholesterol in a person's blood can cause heart disease. a dangerously high cholesterol level. a chemical substance found in your blood. Too much cholesterol in your body may cause heart disease. (chole ( CHOLER) + stereos + -ol ). Waxy organic compound found in blood and all animal tissues. It is a steroid, with molecular formula C27H46O, containing four rings in its structure. Cholesterol is essential to life; it is a primary component of cell membranes and a starting or intermediate material from which the body makes bile acids, other steroid hormones, and vitamin D. It is made in the liver and some other organs, in greater or lesser amounts depending on the amount recently consumed in the diet. It circulates in the blood in compounds called lipoproteins, since it is not water-soluble alone. Excess cholesterol in the blood forms deposits in arteries (see arteriosclerosis), which can lead to coronary heart disease. Michael Brown born 1941 and Joseph Goldstein born 1940 won a Nobel Prize in 1985 for their work in discovering this process. Since the body makes cholesterol from fats, blood cholesterol cannot be reduced by limiting only the amount of cholesterol in the diet; the amount of fat, especially saturated fat (see saturation, fatty acid) must also be reduced. See also triglyceride; Important lipid found only in animals Cholesterol is important as cell membrane component, but also serves as a biosynthetic precursor for steroid hormones (e g sex hormones) and the active gall bladder ingredients bile acids (= detergents) The human liver can synthesize all the necessary levels of cholesterol and will reduce its own synthesis if cholesterol is taken in during a meal (only from animal sources) 'Bad' and 'Good' cholesterol refers to special transport particles of lipids in our blood serum called lipoprotein particles The low density form or LDL is high in cholesterol and chronically high concentration of LDL in blood results in insoluble deposits that can clog arteries and restrict blood flow contributing to heart problems; a waxy substance that is produced in the human body, in animal fats, and in dairy products and is transported in the blood; An essential component of animal cell membranes and the precursor for the formation of the steroid hormones Not essential in the diet because it is synthesized by the body Not found in higher plants or most bacteria; A fat-like sterol used by the body for production of hormones (including testosterone), vitamin D and cell membranes; high levels in the blood stream are a marker for heart disease; What it's good for: Makes cell membranes, hormones Low-density lipoprotein (LDL) is often called "bad" cholesterol because too much in your blood can cause heart disease High-density lipoprotein (HDL) is often called "good" cholesterol because it helps remove LDL Where you get it: Meat, poultry, fish, dairy products, and eggs DRI or RDA: None; (ko-LES-te-rol) A fat-like substance that is made by the body and is found naturally in animal foods such as meat, fish, poultry, eggs, and dairy products Foods high in cholesterol include liver and organ meats, egg yolks, and dairy fats Cholesterol is carried in the blood When cholesterol levels are too high, some of the cholesterol is deposited on the walls of the blood vessels Over time, the deposits can build up causing the blood vessels to narrow and blood flow to decrease The cholesterol in food, like saturated fat, tends to raise blood cholesterol, which increases the risk for heart disease Total blood cholesterol levels above 240 mg/dl are considered high Levels between 200-239 mg/dl are considered borderline high Levels under 200 mg/dl are considered desirable; a waxy substance that is produced in the human body, animal fats, and in dairy products and is transported in the blood; A fatty substance manufactured naturally in the liver and found in the blood and body tissues Excess cholesterol in the blood (usually due to over consumption of saturated fats) can clog arteries and increase susceptibility to heart disease; a substance in animal tissue that is an essential component of cell membranes and nerve fiber insulation Cholesterol is important for the metabolism and transport of fatty acids and in the production of hormones and Vitamin D Cholesterol is manufactured by the liver, and is also present in certain foods (e g , eggs, shellfish) There are 2 types of cholesterol in the blood, high-density (HDL) and low-density (LDL) lipoproteins Very low cholesterol levels may indicate malnutrition; A waxy, fat-like substance made by the liver that helps your cells function Your body makes all the cholesterol it needs; A fatty substance that occurs naturally in the blood, cell walls, and most body tissues Cholesterol is made by the liver, and also enters the body via foods rich in saturated fat Excess cholesterol collects in fatty deposits called plaques along artery walls, a major feature of coronary artery disease; Cholesterol is a major fat in the body and is required for many processes including hormone metabolism and in integral to the formation of the cell wall matrix Elevated levels in feces may indicate the lack of absorption of the molecule into the bloodstream or the release of cholesterol from the cell wall of colonocytes during periods of increased cellular turnover; A fatty substance that comes, in part, from certain foods you eat When too much cholesterol builds up in the body, it can lead to atherosclerosis; {i} fatty substance present in the blood and in certain foods (excess amount can cause a hardening of the arteries); A fat-like substance found in blood, muscle, liver, brain, and other tissues in people and animals The body makes and needs some cholesterol Too much cholesterol, however, may cause fat to build up in the walls of the larger arteries and cause a disease called atherosclerosis Butter and egg yolks are examples of foods that have a lot of cholesterol Cholesterol is composed of several components: HDL-Cholesterol (high-density lipoprotein cholesterol): This component of cholesterol seems to have protective effects, and higher levels are considered to be good to have LDL-Cholesterol (low-density lipoprotein cholesterol) VLDL-Cholesterol (very low-density lipoprotein cholesterol) Cholesterol is a lipid
cholesterol test: medical examination which tests the level of cholesterol in the blood
cholesterol-free: lacking cholesterol (crystalline alcohol found especially in animal fats)
cholesterol-rich: containing a large amount of cholesterol
Lecithin-cholesterol acyltransferase: Lecithin-cholesterol acyltransferase (LCAT, also called phosphatidylcholine-sterol O-acyltransferase) is an enzyme that converts free cholesterol into cholesteryl ester (a more hydrophobic form of cholesterol), which is then sequestered into the core of a lipoprotein particle, eventually making the newly synthesized HDL spherical and forcing the reaction to become unidirectional since the particles are removed from the surface. The enzyme is bound to high-density lipoproteins (HDLs) and low-density lipoproteins in the blood plasma
blood cholesterol test: medical test which determines the level of cholesterol in the blood
elevated cholesterol: high level of cholesterol in the body
good cholesterol: type of cholesterol beneficial to one's health
hdl cholesterol: the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
high cholesterol: finding of cholesterol in the bloodstream, finding of a fatty substance in body tissue
ldl cholesterol: the cholesterol in low-density lipoproteins; the `bad' cholesterol; a high level in the blood is thought to be related to various pathogenic conditions
oxidized ldl cholesterol: LDL cholesterol that has been bombarded by free radicals; it is thought to cause atherosclerosis
without cholesterol: lacking a fatty component

Turkish - English

Definition of cholesterol in Turkish English dictionary: (Tıp) Vücuttaki yağ benzeri maddeler (Kolesterol). Vücut bir miktar Kolesterole ihtiyaç duyar ve bunu kendisi yapar veya Yağ ve yumurta sarısı gibi besinlerden alır

cholesterol

Hyphenation

cho·les·ter·ol

Turkish pronunciation

kılestırıl

Pronunciation

/kəˈlestərəl/ /kəˈlɛstɜrəl/

Etymology

[ k&-'les-t&-"rOl, -"rol ] (noun.) 1894. International Scientific Vocabulary, from chol- + Greek stereos solid.

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cholesterol

Definition of cholesterol in English Turkish dictionary

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