Atosiban acetate (RW22164 acetate;RWJ22164 acetate) 是一种九肽，竞争性的加压素/催产素受体 (vasopressin/oxytocin receptor) 拮抗剂，也是一种脱氨基催产素类似物。Atosiban acetate 是一种主要的宫缩抑制剂，可用于自发早产的研究。

Atosiban acetate (RW22164 acetate;RWJ22164 acetate) is a nonapeptide competitive vasopressin/oxytocin receptor antagonist, and is a desamino-oxytocin analogue. Atosiban is the main tocolytic agent and has the potential for spontaneous preterm labor research.

Solid

Atosiban inhibits the oxytocin-mediated release of IP3 from the myometrial cell membrane. There is reduced release of intracellular, stored calcium from the sacroplasmic reticulum of myometrial cells, and reduced influx of Ca from the extracellular space through voltage gated channels. In addition, Atosiban suppresses oxytocin-mediated release of PGE and PGF from the decidua. has not independently confirmed the accuracy of these methods. They are for reference only.

The posterior pituitary hormones, oxytocin and arginine vasopressin, differ in structure by only two amino acids, and Atosiban influences physiological effects of arginine vasopressin on the feto-maternal cardiovascular and renal systems. In late-gestation sheep, the administration of Atosiban for 1 hour fails to induce fetomaternal cardiovascular changes.
Atosiban blocks the activation of oxytocin-receptor-expressing neurons in the parabrachial nucleus of mice. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisturePowder -80°C 2 years；-20°C 1 year

[1]. Sanu O, et al. Critical appraisal and clinical utility of atosiban in the management of preterm labor. Ther Clin Risk Manag. 2010 Apr 26;6:191-9.
[2]. Philip J Ryan, et al. Oxytocin-receptor-expressing Neurons in the Parabrachial Nucleus Regulate Fluid Intake. Nat Neurosci. 2017 Dec;20(12):1722-1733.

In Vitro: DMSO : 100 mg/mL (94.86 mM; Need ultrasonic)H₂O : 50 mg/mL (47.43 mM; Need ultrasonic)配制储备液