Genistein and the reduced the risk of breast cancer incidence

  Posted by Chantel M. research contributed by US National Library of Medicine National Institutes of Health 


In the study to investigate  the effects of dietary genistein on the development of breast cancer using ethyl methanesulphonate (EMS) chemically induced rat model of hormone-dependent mammary carcinoma. Female Wistar King A rats were orally given EMS for 12 wk and fed isoflavone-free NIH-07PLD diets with or without genistein, beginning immediately after weaning period, indicated that The addition of either low or high genistein, which produced the plasma concentrations comparable with those observed in humans consuming high soy diets, did not show any preventive activity. Soy-containing pellet food, exhibiting substantial plasma concentrations of isoflavones such as genistein, daidzein, equol, and glycitein, significantly increased the latency periods, compared to either NIH-07PLD diet with low (P = 0.027) or high (P = 0.034) genistein. Body weights, total EMS uptakes, and urinary estradiol concentrations were not significantly different among groups. These data indicate that genistein does not exert clear preventive effects and that isoflavone components other than genistein might be preventive against hormone-dependent mammary carcinogenesis, posted in PubMed.

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