choline-phosphate cytidylyltransferase |
<enzyme> An enzyme that catalyses the transfer of cytidylate (CMP) to choline phosphate to form CDPcholine. It is the rate-limiting enzyme in the choline pathway for the biosynthesis of phosphatidylcholine. Its activity is increased by glucocorticoids. Registry number: EC 2.7.7.15 (12 Dec 1998) |
|---|---|
cholinephosphotransferase |
<enzyme> An enzyme catalyzing the reaction between CDP-choline and 1,2-diacylglycerol to form a phosphatidylcholine and CMP. The last step in lecithin biosynthesis. (05 Mar 2000) |
cholinergic |
<pharmacology> Resembling acetylcholine in pharmacological action, stimulated by or releasing acetylcholine or a related compound. (15 Jan 1998) |
cholinergic agent |
An agent that mimics the action of the parasympathetic nervous system (e.g., methacholine). (05 Mar 2000) |
cholinergic agents |
Any drug used for its actions on cholinergic systems. Included here are agonists and antagonists, drugs that affect the life cycle of acetylcholine, and drugs that affect the survival of cholinergic neurons. The term cholinergic agents is sometimes still used in the narrower sense of muscarinic agonist, although most modern texts discourage that usage. (12 Dec 1998) |
cholinergic agonists |
Drugs that bind to and activate cholinergic receptors. (12 Dec 1998) |
cholinergic antagonists |
Drugs that bind to but do not activate cholinergic receptors, thereby blocking the actions of acetylcholine or cholinergic agonists. (12 Dec 1998) |
cholinergic blockade |
Inhibition by a drug of nerve impulse transmission at autonomic ganglionic synapses (ganglionic blockade), at postganglionic parasympathetic effector cells (e.g., by atropine), and at myoneural junctions (myoneural blockade), the inhibition of a cholinergic agent. (05 Mar 2000) |
cholinergic fibres |
Nerve fibres liberating acetylcholine at the synapse after an impulse. (12 Dec 1998) |
cholinergic medication |
<pharmacology> Medications which stimulate cholinergic receptors (for example bethanechol). (15 Jan 1998) |
cholinergic neuron |
<physiology> Neurons in which actylcholine is the neurotransmitter. (15 Jan 1998) |
cholinergic parasympathomimetic agent |
<pharmacology> A chemical substance that causes the release of choline (acetylcholine) from parasympathetic nerve endings. (15 Jan 1998) |
cholinergic receptors |
Chemical sites in effector cells or at synapses through which acetylcholine exerts its action. (05 Mar 2000) |
cholinergic system |
<physiology> The system of nerve cells that uses acetylcholine as its neurotransmitter, nerve cells in the cholinergic system are damaged in the brains of Alzheimer patients. (15 Jan 1998) |
cholinergic urticaria |
A form of physical or non-allergic urticaria initiated by heat (e.g., hot baths, physical exercise, pyrexia, exposure to sun or to a warm room) or by excitement; the rather distinctive lesions consist of pruritic areas 1 to 2 mm in diameter surrounded by bright red macules. Synonym: heat urticaria. (05 Mar 2000) |