Pound A W
Br J Exp Pathol. 1975 Jun;56(3):271-5.
Mice were given a first dose of dimethylnitrosamine (DMN) and the LD50 of a second dose determined at various times later. The total dose (sum of the 2 doses) tolerated under these conditions increased slowly as the interval between the 2 doses increased, to a maximum that was maintained until the 6th day. The LD50 of the second dose then returned slowly to normal by the 10th day. The data suggest that the biochemical lesion in DMN induced liver necrosis developed relatively slowly.
给小鼠注射第一剂二甲基亚硝胺(DMN),并在之后不同时间测定第二剂的半数致死量(LD50)。在这些条件下,随着两剂之间的间隔时间增加,所耐受的总剂量(两剂之和)缓慢增加,直至第6天达到最大值并维持不变。然后,第二剂的LD50在第10天时缓慢恢复至正常水平。这些数据表明,DMN诱导的肝坏死中的生化损伤发展相对缓慢。