动物实验 z-bio 2021-06-09 366

　　Antioxidants are believed to prevent cancer, but animal experiments conducted by the Faculty of Medicine of the University of Hong Kong have shown that antioxidants can stimulate the growth of liver cancer cells, such as vitamins A and C or E.

　　The relevant research results of the School of Medicine of the University of Hong Kong have been published in the Proceedings of the National Academy of Sciences. Related research in the past has shown that the active oxides (also known as free radicals) produced by the human body can attack cells, causing genetic mutations, making them more likely to develop into cancer cells. In general, cells produce antioxidants that inhibit free radicals.

　　However, this study speculates from animal studies that when there are a large number of free radicals in the body of liver cancer patients, transketolase (TKT) in the body will produce more antioxidants to increase resistance. Experiments show that it will produce and promote the growth of liver cancer cells. Based on this phenomenon, the intake of additional antioxidants can stimulate the growth of cancer cells. Wu Lv Ailian, the chief professor and director of pathology at the University of Hong Kong, who led the study, questioned the traditional view that antioxidants can prevent cancer. Patients suffering from liver cancer should avoid high-dose supplements.

　　She emphasized that studies have shown that high doses of antioxidants can stimulate the growth of cancer cells, but they have not been proven to cause cancer. TKT is the colon. Because it is also present in many cancers, including rectal cancer and lung cancer cells, studies have concluded that antioxidants also stimulate the development of other types of cancer cells. She said that research has not yet confirmed whether antioxidants increase the risk of cancer in healthy people.

　　Huang Zeli, assistant professor of medicine at the University of Hong Kong, many fruits, vegetables and dairy products contain antioxidant vitamins A, C or E. The nutrients they contain are also low in antioxidants.