For the study on the effect of aflatoxin B_1 and vitamnin A on the developing fetal rat liver, aflatoxin B_1(1mg/kg, Sigma Chemicals) was administered intraperitoneally on the 8th day of pregnancy and vitamin A (50,000IU/day, Sigma Chemicals) was admi...
For the study on the effect of aflatoxin B_1 and vitamnin A on the developing fetal rat liver, aflatoxin B_1(1mg/kg, Sigma Chemicals) was administered intraperitoneally on the 8th day of pregnancy and vitamin A (50,000IU/day, Sigma Chemicals) was administered orally from the 8th day of pregnancy to a day before sacrifice daily. Under ether anesthesia, removed uterus, opened the pregnant sac, and fetuses were fixed in the 10% neutral buffered formalin solution. The 5㎛ thick liver specimens were stained with H-E and the mitotic figures were counted under high power field(x400) of light microscope.
The results were as followings:
1. Aflatoxin B_1 inhibited the liver cell mitosis.
2. On the 14th day of development, vitamin A inhibited the antimitotic effect of aflatoxin B_1.