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自然界的氧为需氧生物的存活提供了必要的条件。然而,吸入机体的氧通过代谢生成的多种含氧代谢物对机体具有毒性作用,成为某些疾病、肿瘤发生和机体衰老的原因。最近,D.Harman指出:依赖于氧而存活的所有生命被迫走上一条纤细的绳索。五十年代以来,许多学者为了阐明氧对机体的毒性作用已做了大量工作。近年来对机体的解毒功能进行了深入研究,提出了维生素C、E和尿酸的抗氧化作用;有人已利用氧的毒性作为治疗肿瘤的一种手段。这些研究为如何防治疾病、控制肿瘤和延年益寿开辟了一条新的研究途径。
Oxygen in nature provides the necessary conditions for the survival of aerobic organisms. However, the oxygen inhalation of the body through the metabolism of a variety of oxygen metabolites have a toxic effect on the body, as some diseases, tumorigenesis and body aging reasons. Recently, D.Harman pointed out: All life that depends on oxygen is forced to go down a slender rope. Since the 1950s, many scholars have done a lot of work in order to elucidate the toxic effects of oxygen on the body. In recent years, the detoxification function of the body has been studied in depth, and the antioxidative effects of vitamin C, E and uric acid have been proposed. Some people have used the toxicity of oxygen as a means of treating tumors. These studies have opened up a new research approach on how to prevent and treat diseases, control tumors and prolong life.