Ethacridine lactate monohydrate - CAS 6402-23-9
Catalog number: 6402-23-9
Category: Inhibitor
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Molecular Formula:
Molecular Weight:
Ethacridine lactate monohydrate is an aromatic organic compound based on acridine used as an antiseptic agent.
AMN-107; AMN107; AMN107
Canonical SMILES:
1.Kinetic and mechanistic analyses of new classes of inhibitors of two-component signal transduction systems using a coupled assay containing HpkA-DrrA from Thermotoga maritima.
Foster JE;Sheng Q;McClain JR;Bures M;Nicas TI;Henry K;Winkler ME;Gilmour R Microbiology. 2004 Apr;150(Pt 4):885-96.
Two-component signal transduction systems (TCSs) play fundamental roles in bacterial survival and pathogenesis and have been proposed as targets for the development of novel classes of antibiotics. A new coupled assay was developed and applied to analyse the kinetic mechanisms of three new kinds of inhibitors of TCS function. The assay exploits the biochemical properties of the cognate HpkA-DrrA histidine kinase-response regulator pair from Thermotoga maritima and allows multiple turnovers of HpkA, linear formation of phosphorylated DrrA, and Michaelis-Menten analysis of inhibitors. The assay was validated in several ways, including confirmation of competitive inhibition by adenosine 5'-beta,gamma-imidotriphosphate (AMP-PNP). The coupled assay, autophosphorylation and chemical cross-linking were used to determine the mechanisms by which several compounds inhibit TCS function. A cyanoacetoacetamide showed non-competitive inhibition with respect to ATP concentration in the coupled assay. The cyanoacetoacetamide also inhibited autophosphorylation of histidine kinases from other bacteria, indicating that the coupled assay could detect general inhibitors of histidine kinase function. Inhibition of HpkA autophosphorylation by this compound was probably caused by aggregation of HpkA, consistent with a previous model for other hydrophobic compounds.
2.Ethodin: pharmacological evidence of the interaction between smooth muscle and mast cells in the myometrium.
Rudolph MI;de los Angeles García M;Sepulveda M;Brandan E;Reinicke K;Nicovani S;Villan L J Pharmacol Exp Ther. 1997 Jul;282(1):256-61.
Ethodin has been used to induce labor through a mechanism that does not involve the estrogen-preparatory process being postulated as necessary for ensuring the events in a normal labor. The cellular mechanisms involved in that process are unknown. We used an isolated organ bath preparation for mouse uterine horns and a primary culture of mouse myometrial smooth muscle cells to analyze the cellular mechanisms involved in the contractile action of this drug in the myometrium. Ethodin at a concentration of 10 microM and Compound 48/80 (1 microg/ml) evoked contractions of uterine horns in an isolated organ bath preparation. Uterine contractile responses showed a transient increase in contractile tension that lasted 2 to 3 min. Tachyphylaxis was observed after four or five successive stimuli, which consisted in additions and washings of the drug at an interval of 10 min. The primary smooth muscle mouse myometrium cells contained a high proportion of relaxed cells that varied widely in length (5-160 microm). Cell lengths decreased in response to the application of serotonin (10 microM) and oxytocin (0.1 microM) but were not affected after the addition of ethodin (10 microM). However, the cells contracted after a purified fraction of mast cells that had been degranulated by the action of the drug ethodin, which was added to the culture medium.
3.Effects of vesicular acetylcholine uptake blockers on frequency augmentation-potentiation in frog neuromuscular transmission.
Maeno T;Enomoto K Neuroscience. 1994 Mar;59(2):487-93.
Vesamicol inhibits the vesicular loading of acetylcholine molecules. The effects of vesamicol and similarly acting compounds on neuromuscular transmission in frogs were investigated to determine whether these inhibitors-inhibit the frequency augmentation-potentiation of transmitter release. Various vesicular acetylcholine transport blockers suppressed the stimulation frequency-related release parameter, k, in a dose-dependent manner. Artane, cetiedil, chloroquine, ethodin, quinacrine, vesamicol and its benzyl-analogue, 2-(4-benzylpiperidino)cyclohexanol, had strong effects, while those of aminacrine, chlorpromazine, fluphenazine, imipramine, pyrilamine and thioridazine were weak. A significant correlation was observed between the biochemically reported values of IC50 and the electrophysiological inhibitory potencies on k at 20 microM. Contrary to expectations from the biochemical data, however, vesamicol and its benzyl-analogue showed equipotent inhibitory actions on the electrophysiological frequency augmentation-potentiation relation. Low sensitivity and low selectivity of the frequency augmentation-potentiation for vesamicol and its benzyl-analogue lead us to conclude that the vesicular acetylcholine transporter is not the site of the electrophysiological action of vesamicol and similarly acting chemicals.
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CAS 6402-23-9 Ethacridine lactate monohydrate

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