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Anticholinergics (anticholinergic agents) are substances that block the action of the acetylcholine (ACh) neurotransmitter at synapses in the central and peripheral nervous system. [1][2] These agents inhibit the parasympathetic nervous system by selectively blocking the binding of ACh to its receptor in nerve cells.
Organophosphate poisoning is poisoning due to organophosphates (OPs). [4] Organophosphates are used as insecticides, medications, and nerve agents. [4] Symptoms include increased saliva and tear production, diarrhea, vomiting, small pupils, sweating, muscle tremors, and confusion. [2] While onset of symptoms is often within minutes to hours ...
Standard treatment for nerve agent poisoning is a combination of an anticholinergic to manage the symptoms, and an oxime as an antidote. [12] Anticholinergics treat the symptoms by reducing the effects of acetylcholine, while oximes displaces phosphate molecules from the active site of the cholinesterase enzymes, allowing the breakdown of ...
The antidote for belladonna poisoning is an anticholinesterase (such as physostigmine) or a cholinomimetic (such as pilocarpine), the same as for atropine. [44] Atropa belladonna is also toxic to many domestic animals, causing narcosis and paralysis. [45] However, cattle and rabbits eat the plant seemingly without suffering harmful effects. [42]
The antidote for curare poisoning is an acetylcholinesterase (AChE) inhibitor (anti-cholinesterase), such as physostigmine or neostigmine. By blocking ACh degradation, AChE inhibitors raise the amount of ACh in the neuromuscular junction; the accumulated ACh will then correct for the effect of the curare by activating the receptors not blocked ...
Physostigmine, an acetylcholinesterase inhibitor, can be used to treat glaucoma and delayed gastric emptying.Because it enhances the transmission of acetylcholine signals in the brain and can cross the blood–brain barrier, physostigmine salicylate is used to treat anticholinergic poisoning (that is, poisoning by substances that interfere with the transmission of acetylcholine signaling, such ...
An antidote is a substance that can counteract a form of poisoning. [ 1 ] The term ultimately derives from the Greek term φάρμακον ἀντίδοτον (pharmakon antidoton), " (medicine) given as a remedy". Antidotes for anticoagulants are sometimes referred to as reversal agents. [ 2 ]
People experiencing bronchospasm due to the β 2 receptor-blocking effects of nonselective beta blockers may be treated with anticholinergic drugs, such as ipratropium, which are safer than beta agonists in patients with cardiovascular disease. Other antidotes for beta blocker poisoning are salbutamol and isoprenaline.