文献类型： 外文期刊

作者： Chen, Wei ¹ ; Lin, Ying Cai ¹ ; Ma, Xian Yong ¹ ; Jiang, Zong Yong ¹ ; Lan, Si Ping ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Anim Sci, Guangzhou 410640, Guangdong, Peoples R China; Minist Agr, Key Lab Anim Nutr & Feed Sci South China, Guangzhou 410640, Guangdong, Peoples R China; State Key Lab Livestock & Poultry Breeding, Guangzhou 410640, Guangdong, Peoples R China; Guangdong Publ Lab Anim Breeding & Nutr, Guangzhou 410640, Guangdong, Peoples R China; Guangdong Key Lab Anim Breeding & Nutr, Guangzhou 410640, Guangdong, Peoples R China

关键词： Genistein;Primary muscle cells;Reactive oxygen species;5-Lipoxygenase;Pro-oxidant

期刊名称：FOOD AND CHEMICAL TOXICOLOGY （ 影响因子：6.023； 五年影响因子：5.844 ）

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收录情况： SCI

摘要： Genistein, a typical soy isoflavone, is an important antioxidant for improving human health and animal production but the compound possesses some pro-oxidant potential. In order to explore the latter, the dose-response relationship of various concentrations of genistein on both cellular proliferation and the redox system were examined. The proliferation of primary muscle cells was promoted by a low concentration of genistein but was inhibited by high concentrations, which also enhanced lipid oxidation and suppressed membrane fluidity. By selecting a high concentration (200 muM) as a pro-oxidant treatment, the mechanism underlying the pro-oxidant function of genistein was then explored. The generation of intracellular reactive oxygen species (ROS) was stimulated by 200 muM genistein, with inhibited expression of NADPH oxidase 4 and cyclooxygenase 1 and 2 as well as increased activity of the glutathione redox system. The cellular expression of 5-lipoxygenase, however, was up-regulated by 200 uM genistein and the addition of 5-lipoxygenase inhibitor (Zileuton) decreased genistein-induced intracellular ROS level, close to that from the addition of the ROS scavenger, N-acetylcysteine. It is concluded that higher concentrations of genistein exert pro-oxidant potential in the primary muscle cells through enhancing ROS production in a 5-lipoxygenase-dependent manner.