choline (redirected from choline esters)

choline /cho·line/ (ko´len) a quaternary amine, often classified as a member of the B vitamin complex; it occurs in phosphatidylcholine and acetylcholine, is an important methyl donor in intermediary metabolism, and prevents the deposition of fat in the liver.

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choline magnesium trisalicylate  see under trisalicylate.

choline salicylate  see salicylate.

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cho·line (kln)

n.

A natural amine often classed in the vitamin B complex and a constituent of many other biologically important molecules, such as acetylcholine and lecithin.

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choline,

n a compound that is used by the body to synthesize acetylcholine (a neurotransmitter), lecithin (phosphatidylcholine), and platelet-activating factor (a blood clotting agent). Choline can be obtained from dietary sources as a supplement and is also synthesized by the body. Has been used for nerve conditions, kidney conditions, liver conditions, headaches, dizziness, and fatigue. Taking regular doses of more than 3.5 g per day can produce a fishy odor, low blood pressure, diarrhea, dizziness, and changes in the ECG. See also lecithin.

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choline,

n a nutrient essential for cardiovascular and brain function and for cellular membrane composition and repair. Classified as an essential nutrient by the Food and Nutrition Board of the Institute of Medicine (USA). Adequate intakes (AI) have been established.

choline salicylate,

n brand name: Arthropan;
drug class: salicylate analgesic;
action: inhibits prostaglandin synthesis by interfering with cyclooxygenase need for biosynthesis;
uses: relief of mild to moderate pain from fever, arthritis, juvenile rheumatoid arthritis.

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choline

a quaternary amine which occurs in the phospholipid phosphatidylcholine and the neurotransmitter acetylcholine, and is an important methyl donor in intermediary metabolism. It was formerly considered to be a B-vitamin and was used to treat fatty degeneration of the liver.

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choline acetylase, choline acetyltransferase

an enzyme that brings about the synthesis of acetylcholine.

choline esters

choline has some of the activity of a cholineric drug but the effect is multiplied many times over by combining it with an acid, e.g. acetic acid, to form an ester, e.g. acetylcholine. Other choline esters with important pharmacological activity are carbachol, bethanechol, methacholine.

choline nutritional deficiency

requirements for choline are largely dependent on the amount of methionine in the diet. In dogs and cats, under normal circumstances, deficiency is unlikely, but choline is a dietary essential for pigs and young calves. Incoordination, weakness, dyspnea and hock swelling occur in experimental deficiency, but there is little evidence of naturally occurring disease. Poultry fed diets deficient in choline develop perosis.

choline salicylate

the choline salt of salicylic acid, which has analgesic, antipyretic and anti-inflammatory properties.

choline theophyllinate

a theophylline derivative used as a bronchodilator. Called also oxtriphylline.