南美蟾毒精 TN1912

Product Introduction
Bioactivity


英文名: Marinobufogenin

描述: Marinobufagenin, a cardiotonic steroid, its increased concentrations are important in the cardiac disease and oxidant stress state seen with renal failure.

体外活性: In vivo studies were performed using the 5/6th nephrectomy model of experimental renal failure (PNx), MBG infusion (MBG), PNx after immunization against MBG, and concomitant PNx and adrenalectomy. Physiological measurements with a Millar catheter and immunohistochemistry were performed. In vitro studies were then pursued with cultured isolated cardiac fibroblasts. We observed that PNx and MBG increased MBG levels, blood pressure, heart size, impaired diastolic function, and caused cardiac fibrosis. PNx after immunization against MBG and concomitant PNx and adrenalectomy had similar blood pressure as PNx but less cardiac hypertrophy, diastolic dysfunction, and cardiac fibrosis. MBG induced increases in procollagen-1 expression by cultured cardiac fibroblasts at 1 nM concentration. These increases in procollagen expression were accompanied by increases in collagen translation and increases in procollagen-1 mRNA without any demonstrable increase in procollagen-1 protein stability. The stimulation of fibroblasts with MBG could be prevented by administration of inhibitors of tyrosine phosphorylation, Src activation, epidermal growth factor receptor transactivation, and N-acetyl cysteine.

存储条件: Powder: -20°C for 3 years | In solvent: -80°C for 1 year

关键字: Marinobufogenin

相关产品: Strophanthidin | Lasiodiplodin | Chebulinic acid | Oleandrin | Suloctidil | FR-167356 | Matairesinol | Licoflavone B | Retusin | (-)-Denudatin B

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