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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한한방내과학회 대한한방내과학회지 대한한방내과학회지 제26권 제3호
발행연도
2005.1
수록면
615 - 625 (11page)

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Objectives : Reactive oxygen species (ROS), which include hydrogen peroxide and other chemical forms known as free radicals such as hydroxyl radical (OH), superoxide (O2-), and peroxyl radicals (ROO), are produced as part of normal and essential biological processes. Peroxynitrite (ONOO-) is a reactive oxidant formed from superoxide (·O2-) and nitric oxide (NO), that can oxidize several cellular components, including essential protein, non-protein thiols, DNA, low-density lipoproteins (LDL) and membrane phospholipids. ROS and ONOO- have contributed to the pathogenesis of diseases such as stroke, heart disease, Alzheimer's disease and atherosclerosis. Because of the lack of endogenous enzymes to thwart ROS and ONOO- activation, developing a specific scavenger is remarkably important. Rubi Fructus is the one of medical herbs and strengthens the kidneys to preserves the vital energy. Methods : In this study, the ability of Rubi Fructus (1, 10, 50 g/ml) to scavenge ROS and to protect cells against ROS and cell death of endothelial cell. The level of ROS was detected by staining with DCFH-DA. The level of intracellular calcium (Ca2+) was detected with the fluorescent method. Cell death analyses were performed using propidium iodide (PI) staining. Results : Rubi Fructus blocked lipopolysaccharide (LPS)-induced ROS, and decreased ROS induced 3-Morpholinosydnonine (SIN-1) and tert-butylhydroperoxide (t-BHP). Rubi Fructus markedly scavenged authentic ONOO-, also inhibited ONOO- induced by ․O2- and NO which are derived from SIN-1. Rubi Fructus inhibited intracellular Ca2+ levels, and inhibited t-BHP-induced ROS in YPEN cells. Rubi Fructus also manifested cytoprotection from cell death induced by t-BHP. Conclusions : The present study suggests that Rubi Fructus is a powerful antioxidant and promotes cellular defense activity in the protection against ROS and ONOO-.

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