Demethylbellidifolin preserves endothelial function by reduction of the endogenous nitric oxide synthase inhibitor level

Journal of Ethnopharmacology
De-Jian JiangYuan-Jian Li

Abstract

The present study examined the anti-oxidation and protective effects of demethylbellidifolin (DMB), a xanthone compound extracted from swertia davidi Franch, on endothelium. The relationship between the protective effects of DMB on endothelium and the level of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase, was also determined in the present study. DMB significantly inhibited Cu(2+)-induced low-density lipoprotein (LDL) oxidation and scavenged DPPH radicals. DMB significantly attenuated the inhibition of endothelium-dependent vasodilator responses, induced by lysophosphatidycholine (LPC) in vitro and LDL in vivo, and increased release of lactate dehydrogenase induced by LDL in cultured endothelial cells. DMB significantly attenuated the increased concentration of malondialdehyde and ADMA, and the decreased level of nitric oxide induced by LDL in vivo and in cultured endothelial cells. DMB also significantly reduced the decreased activity of dimethylarginine dimethylaminohydrolase (DDAH) induced by LDL in cultured endothelial cells. In summary, the present results suggest that DMB protects endothelial damage induced by LPC in vitro and LDL in vivo or in endothelial cells, and the protective ...Continue Reading

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Citations

Aug 12, 2006·Canadian Journal of Physiology and Pharmacology·Wei-Jun TangYuan-Jian Li
Dec 18, 2008·Canadian Journal of Physiology and Pharmacology·Hong-Bo XiaoYa-Ping Hu
Apr 1, 2009·Expert Opinion on Drug Metabolism & Toxicology·Carol Wadham, Arduino A Mangoni
Feb 22, 2012·European Journal of Pharmaceutical Sciences : Official Journal of the European Federation for Pharmaceutical Sciences·Hong-Bo XiaoNan Zhou
May 12, 2017·The American Journal of Chinese Medicine·Jie LiYuan-Zhong Wang
Apr 19, 2007·Molecular Nutrition & Food Research·Valeria SorrentiFabio Galvano
Jun 17, 2011·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·Jun Fu LiYou Yi Zou
Jun 5, 2004·Cardiovascular Drug Reviews·De-Jian JiangYuan-Jian Li

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