choline(redirected from L-choline)
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an amine that occurs in phosphatidylcholine and acetylcholine, and is an important methyl donor in intermediary metabolism. Choline is a lipotropic agent, a substance that decreases liver fat content by increasing phospholipid turnover. It was formerly considered to be a B vitamin and is now classified as a pseudovitamin, although it is still sometimes classified as part of the vitamin B complex. Vitamin B12 and folacin are involved in the synthesis of choline.
choline acetylase (choline acetyltransferase) an enzyme that brings about the synthesis of acetylcholine.
choline magnesium trisalicylate see under trisalicylate.
choline salicylate see salicylate.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
agent found in most animal tissues either free or in combination as lecithin (phosphatidylcholine), acetate (acetylcholine), or cytidine diphosphate (cytidine diphosphocholine). It is included in the vitamin B complex. Several salts of choline are used in medicine.
Farlex Partner Medical Dictionary © Farlex 2012
A natural amine, C5H15NO2, often classed in the vitamin B complex, that is a constituent of lecithin and other phospholipids and is a precursor of certain biologically important molecules, such as acetylcholine.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
cholineA chemical present in most tissues, either free or combined with acetate (acetylcholine, which is critical for synaptic transmission), cytidine diphosphate or lecithin (phosphatidylcholine); it is included in the vitamin B complex.
Some providers of alternative healthcare have recommended choline to manage body odour, convulsions and tardive dyskinesia.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
An amine found in most animal tissues. It is included in the vitamin B complex; as acetylcholine, it is essential for synaptic transmission. Several salts of choline are used in medicine.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
cholineOne of the B vitamins necessary for the metabolism of fats and the protection of the liver against fatty deposition. The important NEUROTRANSMITTER acetylcholine is formed from it.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
cholinean organic base which is a constituent of ACETYLCHOLINE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Agent found in most animal tissues either free or in combination as lecithin, acetate, or cytidine diphosphate; included in vitamin B complex.
Medical Dictionary for the Dental Professions © Farlex 2012