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Potent oxytocin receptor (OTR) antagonist. Inhibits oxytocin-induced increase in Ca2+ concentration in myometrial cells in vitro (IC50 = 5 nM) Activates NF-κB and MAPK pathways in human amnion via Gαi signaling, resulting in pro-inflammatory effects. Inhibits oxytocin-induced uterine contractions in vivo and in vitro. Effective in a rat preterm labor model.
(Modifications: X-1 = Mpr, X-8 = Orn, Tyr-2 = D-Tyr(OEt), Gly-9 = C-terminal amide, Cyclized = X-1 - Cys-6)
|Storage||Store at -20°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
|Solubility||Soluble to 100 mg/ml in water|
References are publications that support the biological activity of the product.
Kim et al (2016) The oxyt. receptor antagonist, Atosiban, activates pro-inflammatory pathways in human amnion via Gαi signalling. Mol.Cell.Endocrinol. 420 11 PMID: 26586210
Kim et al (2017) Differential effects of oxyt. receptor antagonists, Atosiban and Nolasiban, on oxyt. receptor-mediated signaling in human amnion and myometrium. Mol.Pharmacol. 91 403 PMID: 28188254
Hahn et al (1987) Evaluation of 1-deamino-[D-Tyr(Oethyl)2, Thr4, Orn8] vasotocin, an oxyt. antagonist, in animal models of uterine contractility and preterm labor: a new tocolytic agent. Am.J.Obstet.Gynecol. 157 977 PMID: 3674173
Maggi et al (1994) Antagonists for the human oxyt. receptor: an in vitro study. J.Reprod.Fertil. 101 345 PMID: 7932368
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Keywords: Atosiban, Atosiban supplier, oxytoxin, receptor, antagonists, antagonism, tocolytics, preterm, labor, labour, OTR, Oxytocin, Receptors, 6332, Tocris Bioscience
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