论文部分内容阅读
已往资料证明,喂动物缺乏蛋白质或必需氨基酸的饲料,可抑制恶性肿瘤的发生和生长。在这些研究中,虽然曾看到适当限制苯丙氨酸的临界水平,可轻度抑制肿瘤的生长,而不影响动物的体重,但大多数试验饲料却抑制了动物的生长。某些研究,其“对照”饲料酪蛋白含量变动范围在12%到18%,20%和28%。另一些研究的“对照”饲料为小鼠或大鼠的标准常备饲料,其蛋白质的含量通常超过20%,因此,上述诸报道仅涉及膳食氨基酸的限制对肿瘤生长的影响,比较了氨基酸缺乏饲料与一个
Past data prove that feeding animal lack of protein or essential amino acids feed, can inhibit the occurrence and growth of malignant tumors. In these studies, although the critical level of phenylalanine was moderately limited and tumor growth was mildly inhibited without affecting the body weight of animals, most of the experimental diets inhibited the growth of animals. In some studies, the “control” dietary casein content ranged from 12% to 18%, 20%, and 28%. In other studies, the “control” feed is a standard standing feed for mice or rats and typically has a protein content of more than 20%. Therefore, these reports only dealt with the effect of dietary amino acid restriction on tumor growth and compared amino acid deficient feeds With one