| Bioactivity | Prinoxodan (RGW2938) is a phosphodiesterase inhibitor. | ||||||||||||
| Target | Phosphodiesterase | ||||||||||||
| Invitro | Prinoxodan (RG W-2938) is an orally effective positive inotropic/vasodilator agent. Prinoxodan is a new nonglycoside, noncatecholamine cardiotonic/vasodilator agent is examined in vitro in isolated guinea pig hearts; in the latter, Prinoxodan 5 nmol-5 μmol increases contractility in a dose-related fashion[2]. | ||||||||||||
| In Vivo | Prinoxodan (RG W-2938) is a new nonglycoside, noncatecholamine cardiotonic/vasodilator agent is examined in vivo in anesthetized and conscious dogs. Prinoxodan 30-300 μg/kg administered intravenously (i.v.) to anesthetized dogs increases contractile force while decreasing arterial pressure and total peripheral resistance (TPR) in a dose-related manner. Heart rate (HR) is only slightly increased, and aortic flow is not appreciably altered. A single oral dose of Prinoxodan 0.3 mg/kg administered to conscious chronically instrumented dogs produces a marked and sustained increase in contractility 15-240 min after treatment while only slightly increasing HR. The effects of Prinoxodan 30-300 μg/kg, i.v. are studied in a mecamylamine-propranolol-induced model of heart failure. Prinoxodan effectively reverses the drug-induced heart failure by increasing myocardial contractility and decreasing arterial pressure while only slightly affecting HR[2]. | ||||||||||||
| Name | Prinoxodan | ||||||||||||
| CAS | 111786-07-3 | ||||||||||||
| Formula | C13H13N4O2 | ||||||||||||
| Molar Mass | 257.27 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Artigou JY, et al. [Evaluation of a new cardiotonic agent on human isolated atrium]. Ann Cardiol Angeiol (Paris). 1993 Feb;42(2):79-82. [2]. Barrett JA, et al. Pharmacology of RG W-2938: a cardiotonic agent with vasodilator activity. J Cardiovasc Pharmacol. 1990 Oct;16(4):537-45. |