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acetylcholine

Overview page. Subjects: Medicine and Health — Science and Mathematics.

(ass-i-tyl-koh-leen)

the acetic acid ester of the organic base choline: the neurotransmitter released at the synapses of parasympathetic nerves and at neuromuscular junctions. See...

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acetylcholinesterase

Overview page. Subjects: Medicine and Health — Science and Mathematics.

An enzyme that hydrolyses acetylcholine to acetic acid and choline. By destroying acetylcholine after its release from the terminal boutons of presynaptic neurons and from postsynaptic...

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biogenic amine

Overview page. Subjects: Medicine and Health — Science and Mathematics.

Any amine that is produced by living organisms, especially the physiologically active amines that serve as neurotransmitters in animals. These include adrenaline (epinephrine),...

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lecithin

Overview page. Subjects: Medicine and Health.

A mixture of phospholipids that may include phosphatidylcholine, phosphatidylethanolamine, and phosphatidylinositol, although sometimes used to refer to pure phosphatidylcholine. Usually...

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lipotropes

Overview page. Subjects: Medicine and Health.

Compounds such as choline, betaine, and methionine that act as methyl donors; deficiency may result in fatty infiltration of the liver.

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muscarine

Overview page. Subjects: Psychology.

A toxic alkaloid drug, chemically related to choline, that was originally derived from the fly agaric mushroom Amanita muscaria, and that mimics acetylcholine at certain receptor sites in...

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phosphatidylcholine

Overview page. Subjects: Medicine and Health — Chemistry.

abbr.: PC; any glycerophospholipid in which a phosphatidyl group is esterified to the hydroxyl group of choline. Phosphatidylcholines are important constituents of cell...

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phospholipid

Overview page. Subjects: Medicine and Health.

The major structural lipid of most cellular membranes, forming a phospholipid bilayer in which membrane proteins are embedded. See phosphatidic acid, phosphatidylcholine,...

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sarcosine

Overview page. Subjects: Medicine and Health.

A natural amino acid (N-methylglycine) found in muscle, most tissues, and blood at around 1.6 mmol/L. It inhibits the type 1 glycine transporter.

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sphingomyelin

Overview page. Subjects: Chemistry — Medicine and Health.

A sphingolipid in which phosphorylcholine or phosphoroethanolamine is ether-linked to ceramide. The concentrations of sphingomyelin and phosphatidyl choline in the plasma membrane often...

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