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  • Title: Kobophenol A inhibits sodium nitroprusside-induced cardiac H9c2 cell death through suppressing activation of JNK and preserving mitochondrial anti-apoptotic Bcl-2 and Mcl-1.
    Author: Lee SR, Kwak JH, Noh SJ, Pronto JR, Ko KS, Rhee BD, Xu Z, Kim N, Han J.
    Journal: Chem Pharm Bull (Tokyo); 2014; 62(7):713-8. PubMed ID: 24759620.
    Abstract:
    Sodium nitroprusside (SNP) releases nitric oxide (NO), a powerful vasodilator, and thus widely used in intensive care unit for treating hypertension emergency. However, cardiac toxicity after SNP administration is a clinical problem. For finding a natural compound that suppressing SNP-induced cardiac toxicity, we tested the protective potential of kobophenol A (Kob A), purified from the root of Caragana sinica, against the toxic effects of SNP. The severe cardiac H9c2 cell death was induced by SNP (2 mM) treatment. Kob A ameliorated SNP-induced cardiac H9c2 cell death, and this protective effect of Kob A may be related to the inhibition of c-Jun NH2-terminal kinase (JNK) and p38 mitogen-activated protein (MAP) kinase activation following SNP administration. In addition, the downregulation of cellular Bcl-2 and Mcl-1 levels by SNP exposure was strongly abrogated in the presence of Kob A. These biological properties of Kob A might provide insights into developing new cardioprotectant against SNP-induced cardiac cell death.
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