| 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) |
| cholinester | An ester of choline; e.g., acetylcholine. (05 Mar 2000) |
| cholinesterase | <enzyme> An enzyme that breaks down acetylcholine tostop its action. (22 May 1997) |
| cholinesterase inhibitor | <pharmacology> These are substances which which act to inhibit acetylcholinesterase, the enzyme which breaks down acetylcholine and thus enhance and subsequently prevent transmission of nerve impulses from one nerve cell to another or to a muscle. Examples include pyridostigmine, ambenonium and neostigmine. (15 Jan 1998) |
| cholinesterase reactivator | A drug that reacts directly with the alkylphosphorylated enzyme to free the active unit; the drugs used therapeutically to reactivate phosphorylated forms of acetylcholinesterase are oximes, e.g., diacetylmonoxime, monoisonitrosoacetone, 2-pralidoxime. (05 Mar 2000) |
| cholinesterase reactivators | Drugs used to reverse the inactivation of cholinesterase caused by organophosphates or sulfonates. They are an important component of therapy in agricultural, industrial, and military poisonings by organophosphates and sulfonates. (12 Dec 1998) |