Rieder A, Adamek M, Wrba H
Oncology. 1983;40(2):120-3. doi: 10.1159/000225708.
Carcinogenesis and death caused by diethylnitrosamine(DENA)-induced hepatomas in Sprague Dawley rats can be significantly delayed by feeding only carrots for several days a week. As this result is not obtained by supplementing food with even higher concentrations of synthetic beta-carotene, there must be several other factors which--together with the carotenoid--contribute to the positive effect. Several other possibilities such as effects of fasting, direct interactions with the carcinogen, resorption, vitamin A storage in the liver, etc., are proposed and discussed.
每周仅喂几天胡萝卜，可显著延缓二乙基亚硝胺（DENA）诱导的斯普拉格-道利大鼠肝癌的致癌过程和死亡。由于即使在食物中添加更高浓度的合成β-胡萝卜素也无法获得这一结果，所以必定还有其他几种因素——与类胡萝卜素一起——促成了这种积极效果。文中提出并讨论了其他几种可能性，如禁食的影响、与致癌物的直接相互作用、吸收、肝脏中维生素A的储存等。
