phosphatidylcholine

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lec·i·thin

(les'i-thin),
Traditional term for 1,2-diacyl-sn-glycero-3-phosphocholines or 3-sn-phosphatidylcholines, phospholipids that on hydrolysis yield two fatty acid molecules and a molecule each of glycerophosphoric acid and choline. In some varieties of lecithin, both fatty acids are saturated, others contain only unsaturated acids (for example, oleic, linoleic, or arachidonic acid); in others again, one fatty acid is saturated, the other unsaturated. Lecithins are yellowish or brown waxy substances, readily miscible in water, in which they appear under the microscope as irregular elongated particles known as "myelin forms," and are found in nervous tissue, especially in the myelin sheaths, in egg yolk, and as essential constituents of animal and vegetable cells.
[G. lekithos, egg yolk]

phosphatidylcholine

/phos·pha·ti·dyl·cho·line/ (-ti″dil-ko´lēn) a phospholipid comprising choline linked to phosphatidic acid; it is a major component of cell membranes and is localized preferentially in the outer surface of the plasma membrane.

phosphatidylcholine

(fŏs′fə-tīd′l-kō′lēn′)
n.
Any of a class of phospholipids that contain a choline group and are a major component of cell membranes. Also called lecithin.

phosphatidylcholine,

n See lecithin.

phosphatidylcholine

one of the lipids concerned in the structure of cell membranes.
References in periodicals archive ?
Metabolomic analysis revealed that phosphatidylcholine acyl-alkyl C34:3 and phosphatidylcholine acyl-alkyl C36:3 are present in OA and in diabetes patients.
Metabolomic analysis of human synovial fluid and plasma reveals that phosphatidylcholine metabolism is associated with both osteoarthritis and diabetes mellitus.
Stent implantation in experimental animals caused more severe injury than coronary artery balloon angioplasty and led to increased expression of C-reactive protein and oxidized phosphatidylcholine in the neointima [33].
Phosphatidylcholine was identified as major circulating phospholipid and stimulator of PON activity [42].
Exhaled breath contains phospholipids such as phosphatidylcholines (3), suggesting it may also be a useful matrix for PEth measurement and hence for noninvasive screening of moderate to heavy drinking.
PEth 16:0/18:1 was chosen because it is the major form in blood (2), and PEth 16:0/16:0 because the corresponding phosphatidylcholine is the major airway surfactant phospholipid (3).
Analysis revealed a number of amino acids and phospholipids that were significantly different between the two groups, and a further targeted analysis showed that the converter group had significantly lower plasma levels of serotonin, phenylalanine, proline, lysine, phosphatidylcholine, taurine, and acylcarnitine.
Elucidation of Phosphatidylcholine Composition in Krill Oil Extracted from Euphausia superba," Lipids 46(1), 25-36 (2010).
Binary mixtures of asymmetric phosphatidylcholines with one acyl chain twice as long as the other.
Analysis of plant phosphatidylcholines by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.
2-Ricinoleoyl phosphatidylcholine (2-ricinoleoyl-PC), used as an internal calibrator, was synthesized according to the method published by Isaacson et al.
Modulation of the positional specificity of lecithin-cholesterol acyltransferase by the acyl group composition of its phosphatidylcholine substrate: role of the sn-1-acyl group.

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