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anticholinergicenUK
an·ti·cho·li·ner·gic A0335900 (ăn′tē-kō′lə-nûr′jĭk, ăn′tī-)adj. Inhibiting or blocking the physiological action of acetylcholine at a receptor site: anticholinergic drugs.
an′ti·cho′li·ner′gic n.anticholinergic (ˌæntɪˌkɒlɪˈnɜːdʒɪk) adj (Physiology) physiol blocking nerve impulses through the parasympathetic nervesn (Pharmacology) med a drug or agent that blocks these nerve impulses, used to control intestinal spasm, increase the heart rate, dilate the pupils for examination of the eyes, dry secretions in anaesthesia, and in some forms to treat Alzheimer's diseasean•ti•cho•lin•er•gic (ˌæn tɪˌkoʊ ləˈnɜr dʒɪk, -ˌkɒl ə-)
adj. 1. of or pertaining to a substance that opposes the effects of acetylcholine; interfering with the passage of parasympathetic nerve impulses. n. 2. an anticholinergic substance, as a drug. [1940–45] Thesaurus| Noun | 1. |  anticholinergic - a substance that opposes or blocks the action of acetylcholineanticholinergic drugmedicament, medication, medicinal drug, medicine - (medicine) something that treats or prevents or alleviates the symptoms of diseaseDaricon, oxyphencyclimine - an anticholinergic drug (trade name Daricon) used in treating peptic ulcers | | Adj. | 1. |  anticholinergic - inhibiting or blocking the action of acetylcholine at a receptor site; "anticholinergic drugs"cholinergic - releasing or activated by acetylcholine or a related compound |
TranslationsEncyclopediaSeeacetylcholineanticholinergicenUK
anticholinergic [an″te-, an″ti-ko″lin-er´jik] 1. blocking the passage of impulses through the parasympathetic nerves.2. an agent that has this effect; called also parasympatholytic.an·ti·cho·lin·er·gic (an'tē-kol-i-ner'jik), Antagonistic to the action of parasympathetic or other cholinergic nerve fibers (for example, atropine).anticholinergic (ăn′tē-kō′lə-nûr′jĭk, ăn′tī-)adj. Inhibiting or blocking the physiological action of acetylcholine at a receptor site: anticholinergic drugs.
an′ti·cho′li·ner′gic n.anticholinergic adjective Referring to an agent or effect that suppresses or inhibits acetylcholine activity.
noun Any agent that inhibits parasympathetic activity by blocking the neurotransmitter acetylcholine; anticholinergics are used for asthma, COPD, diarrhoea, nausea, vomiting, Parkinson’s disease and to decrease smooth muscle spasms (e.g., in the urinary bladder); anticholinergics may be antimuscarinic, ganglionic blockers and neuromuscular blockers.anticholinergic Parasympatholytic adjective Referring to an agent or effect that suppresses or inhibits acetylcholine activity noun Any agent that inhibits parasympathetic activity by blocking the neurotransmitter, acetylcholine; anticholinergics are used for asthma, COPD, diarrhea, N&V, Parkinson's disease, and to ↓ smooth muscle spasms–eg, in the urinary bladder; anticholinergics may be antimuscarinic, ganglionic blockers, and neuromuscular blockersan·ti·cho·lin·er·gic (an'tē-kō'li-nĕr'jik) 1. Antagonistic to the action of parasympathetic or other cholinergic nerve fibers (e.g., atropine). 2. Any of a class of compounds exerting anticholinergic effects. Some of these compounds (e.g., atropine) are used medicinally. anticholinergic Antagonistic to the action of acetyl choline or to the parasympathetic or other CHOLINERGIC nerve supply. Acetyl choline stimulates muscle contraction in the intestines and elsewhere and slows the heart. Anticholinergic substances, such as ATROPINE, relieve muscle spasm, dilate the pupils and speed up the heart.AnticholinergicBlocking the action of the neurohormone acetylcholine. The most obvious effects include dry mouth and dry eyes.Mentioned in: Antipsychotic Drugs, Hypotonic Duodenography, Neurogenic Bladderacetylcholine (ACh) A neurotransmitter substance with special excitatory properties of all preganglionic autonomic neurons, all parasympathetic postganglionic neurons and a few postganglionic sympathetic neurons. Acetylcholine is synthesized and liberated by the action of the enzyme choline acetyltranferase from the compounds choline and acetyl coenzyme A (acetyl CoA) which occurs in all cholinergic neurons. ACh exists only momentarily after its formation, being hydrolysed by the enzyme acetylcholinesterase which is present in the neurons of cholinergic nerves throughout their entire lengths and at neuromuscular junctions: this process is essential for proper muscle function as otherwise the accumulation of ACh would result in continuous stimulation of the muscles, glands and central nervous system. Alternatively a shortage of ACh has devastating effect (e.g. myasthenia gravis). ACh binds to acetylcholine receptors on skeletal muscle fibres. Sodium enters the muscle fibre membrane, which leads to a depolarization of the membrane and muscle contraction. There are two main types of acetylcholine receptors (cholinergic receptors): muscarinic receptors, which are stimulated by muscarine and ACh, belong to a family of G proteins coupled receptors and are situated in parasympathetically innervated structures (e.g. the iris and ciliary body); and nicotine receptors, which are stimulated by nicotine and ACh, are ligand-gated receptors and are situated in striated muscles (e.g. the extraocular muscles). Cholinergic receptors are found in the sympathetic and parasympathetic nervous systems, in the brain and spinal cord. The action of ACh can be either blocked or stimulated by drugs: Anticholinesterase drugs (e.g. neostigmine) inhibit acetylcholinesterase and prolong the action of acetylcholine whereas antimuscarinic drugs (also referred to as anticholinergics or parasympatholytics) such as atropine, cyclopentolate, homatropine, hyoscine and tropicamide inhibit the action of acetylcholine at muscarinic receptors. Other drugs mimic the action of ACh, they are known as parasympathomimetics (e.g. pilocarpine). See cholinergic; cycloplegia; miotics; mydriatic; neurotransmitter; nicotine; synapse; autonomic nervous system.an·ti·cho·lin·er·gic (an'tē-kō'li-nĕr'jik) Antagonistic to the action of parasympathetic or other cholinergic nerve fibers (e.g., atropine). anticholinergicenUK
Related to anticholinergic: acetylcholine, anticholinergic toxidromeSynonyms for anticholinergicnoun a substance that opposes or blocks the action of acetylcholineSynonymsRelated Words- medicament
- medication
- medicinal drug
- medicine
- Daricon
- oxyphencyclimine
adj inhibiting or blocking the action of acetylcholine at a receptor siteAntonyms |