Search results
Results from the WOW.Com Content Network
A muscarinic acetylcholine receptor antagonist, also simply known as a muscarinic antagonist or as an antimuscarinic agent, is a type of anticholinergic drug that blocks the activity of the muscarinic acetylcholine receptors (mAChRs). The muscarinic receptors are proteins involved in the transmission of signals through certain parts of the ...
According to their site of actions, cholinergic blocking drugs can be classified into two general types — antimuscarinic and antinicotinic agents. [1] Antimuscarinic agents (also known as muscarinic antagonists), including atropine and hyoscine, block acetylcholine at the muscarinic acetylcholine receptors.
Preclinical data supports the hypothesis that xanomeline's central mechanism of action is mediated primarily through stimulation of brain muscarinic M 4 and M 1 receptors. [4] M 4 muscarinic receptors are most highly expressed in the midbrain, which controls motor and action planning, decision-making, motivation, reinforcement, and reward ...
Antimuscarinic agents operate on the muscarinic acetylcholine receptors. The majority of anticholinergic drugs are antimuscarinics. Antinicotinic agents operate on the nicotinic acetylcholine receptors. The majority of these are non-depolarising skeletal muscle relaxants for surgical use that are structurally related to curare. Several are ...
Ipratropium exhibits broncholytic action by reducing cholinergic influence on the bronchial musculature. It blocks muscarinic acetylcholine receptors, without specificity for subtypes, and therefore promotes the degradation of cyclic guanosine monophosphate (cGMP), resulting in a decreased intracellular concentration of cGMP. [27]
This mechanism appears to be seldom clinically relevant. [10] Solifenacin is not to be used in people with gastric retention (reduced emptying of the stomach), uncontrolled narrow angle glaucoma (fluid buildup in the eye which raises eye pressure) or hypersensitivity (allergic reaction) to solifenacin or any of its components. [2]
Trospium chloride is a muscarinic antagonist used to treat overactive bladder. [3] It has side effects typical of this class of drugs, namely dry mouth, stomach upset, and constipation; these side effects cause problems with people taking their medicine as directed.
No trials have been published to date regarding use in combination with other antipsychotics, use in treatment resistant patients, or head-to-head comparisons with other medications. This is the first anti-psychotic drug approved that uses a muscarinic mechanism of action, and many others are in development. [36]