Terodiline is an M1-selective muscarinic receptor (mAChR) antagonist with Kbs of 15, 160, 280, and 198 nM in rabbit vas deferens (M1), atria (M2), bladder (M3) and ileal muscle (M3), respectively. Terodiline also is a Ca2+ blocker. Terodiline acts as a treatment for urinary frequency and urge incontinence[1].
Bethanechol is a parasympathomimetic choline carbamate that selectively stimulates muscarinic receptors without any effect on nicotinic receptors.Target: muscarinic receptorHyoscine butylbromide concentration dependently reduced muscle contractions, calcium mobilization, and epithelial secretion induced by the muscarinic agonist bethanechol with IC50 values of 429, 121, and 224 nmol L(-1), respectively.[2] Bethanechol presentes significantly improve of salivary parameters. Bethanechol is effective in decreasing the salivary gland damage.[3] Cerebral malakoplakia is a very rare chronic inflammatory disease. Treatment with antibiotic Bethanechol improves symptoms in association with a decrease in the abnormal calcification and enhancement.[4]
Tolterodine(PNU-200583) is a potent muscarinic receptor antagonists that show selectivity for the urinary bladder over salivary glands in vivo. IC50 Value:Target: mAChRin vitro: Carbachol-induced contractions of isolated guinea pig bladder were effectively inhibited by tolterodine (IC50 14 nM) and 5-HM (IC50 5.7 nM). The IC50 values were in the microM range and the antimuscarinic potency of tolterodine was 27, 200 and 370-485 times higher, respectively, than its potency in blocking histamine receptors, alpha-adrenoceptors and calcium channels. The active metabolite, 5-HM, was >900 times less potent at these sites than at bladder muscarinic receptors [1].in vivo: Tolterodine was extensively metabolized in vivo [2]. In the passive-avoidance test, tolterodine at 1 or 3 mg/kg had no effect on memory; the latency to cross and percentage of animals crossing were comparable to controls. In contrast, scopolamine induced a memory deficit; the latency to cross was decreased, and the number of animals crossing was increased [3].
YM-58790 free base is a potent antagonist of mAChR. YM-58790 free base binds M1, M2, M3 with Ki values of 28 nM, 260 nM, and 15 nM. YM-58790 free base exhibits potent inhibitory activity on bladder pressuer in reflexly-evoked rhythmic contraction in rats[1].
Fesoterodine is an orally active, nonsubtype selective, competitive muscarinic receptor (mAChR) antagonist with pKi values of 8.0, 7.7, 7.4, 7.3, 7.5 for M1, M2, M3, M4, M5 receptors, respectively. Fesoterodine is used for the overactive bladder (OAB)[1][2].
Talsaclidine is a muscarinic agonist with preferential neuron-stimulating properties. Talsaclidine is a full agonist at the M1 subtype, and as a partial agonist at the M2 and M3 subtypes[1][2][3][4].
Fesoterodine Fumarate is an antimuscarinic agent and is rapidly de-esterified to its active metabolite 5-hydroxymethyl tolterodine that is a muscarinic receptor antagonist.IC50 value:Target: mAChRFesoterodine has the advantage of allowing more flexible dosage than other muscarinic antagonists. Its tolerability and side effects are similar to other muscarinic antagonists and as a new drug seems unlikely to make great changes in practices of treatment for overactive bladder.
β2AR/M-receptor agonist-2 (compound 15) is a muscarinic antagonist and β2 adrenoceptor agonist (MABA). β2AR/M-receptor agonist-2 shows potency to β2 adrenoceptor with an EC50 value of 3.7 nM. β2AR/M-receptor agonist-2 also has potency to human cloned M3 receptor with a Ki value of 0.73 nM. β2AR/M-receptor agonist-2 is a potent bronchodilator, it can be used for the research of chronic obstructive pulmonary disease (COPD)[1].
Oxotremorine M iodide is a potent and selective muscarinic acetylcholine receptor (mAChR) agonist. Oxotremorine M iodide potentiates NMDA receptors by muscarinic receptor dependent and independent mechanisms[1].
Atropine sulfate monohydrate is a competitive muscarinic acetylcholine receptor antagonist.Target: mAChRAtropine is a naturally occurring tropane alkaloid extracted from deadly nightshade (Atropa belladonna), Jimson weed (Datura stramonium), mandrake (Mandragora officinarum) and other plants of the family Solanaceae. Atropine is a competitive antagonist of the muscarinic acetylcholine receptors (acetylcholine being the main neurotransmitter used by the parasympathetic nervous system). Atropine dilates the pupils, increases heart rate, and reduces salivation and other secretions [1].
Trihexyphenidyl hydrochloride is an antiparkinsonian agent of the antimuscarinic class, binds to the M1 muscarinic receptor.