论文部分内容阅读
微量元素硒是机体正常生长的必需营养素,它能作为谷胱甘肽过氧化物酶组成部分,参与破坏机体代谢过程中产生的过氧化物,保障细胞膜或蛋白质中特定基团免受损害。随研究深入,发现体内硒水平与肿瘤发生率有密切关系。从实验动物获得的绝大多数资料支持硒是肿瘤细胞抑制剂的论点,特别是对上皮细胞。流行病学调查也提示硒缺乏与某些疾病产生有关。近年来报道用硒治疗消化道肿瘤,有一定成效。但从细胞水平研究硒对消化系
Trace element selenium is an essential nutrient for the body’s normal growth. It can act as a component of glutathione peroxidase, participates in the destruction of peroxides produced in the body’s metabolic processes, and protects specific groups in cell membranes or proteins from damage. With further research, it was found that the level of selenium in the body is closely related to the incidence of tumors. The vast majority of data obtained from experimental animals support the argument that selenium is a cytostatic agent, especially for epithelial cells. Epidemiological investigations also suggest that selenium deficiency is associated with certain diseases. In recent years, it has been reported that selenium has been used to treat digestive tract tumors with certain results. But from the cellular level, we study selenium on the digestive system.