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流行病学研究表明黄豆制品可减少妇女乳腺癌发生率,动物实验也证明了黄豆食品可降低大鼠因辐射或 N-甲基-N-亚硝基脲等致癌剂诱发的乳腺癌变率。已知黄豆中所含的2种异黄酮黄豆甙元(daidzein 1)和染料木黄酮(genistein 2)在降低乳腺癌发生率方面起重要作用,体内、外实验均已证实2可抑制 H_2O_2的形成,并作为酪氨酸激酶抑制剂而抑制 DNA 的合成。上述2种黄豆异黄酮在消化道内进行代谢,通过检测摄食黄豆者的尿液得知这2种异黄酮的主要代谢物是它
Epidemiological studies have shown that soy products can reduce the incidence of breast cancer in women, and animal experiments have also demonstrated that soy foods can reduce the rat breast cancer variability induced by radiation or N-methyl-N-nitrosourea and other carcinogens. It is known that the two kinds of isoflavones daidzein 1 and genistein 2 in soybeans play an important role in reducing the incidence of breast cancer. Both in vitro and in vivo experiments have confirmed that 2 can inhibit the formation of H 2 O 2 , and as a tyrosine kinase inhibitor inhibits DNA synthesis. The above two kinds of soybean isoflavones are metabolized in the digestive tract. It is detected that the main metabolites of the two isoflavones are