title: Toxicity of aflatoxin B1 in rat and mouse hepatocytes in vivo and in vitro.
abstract: The reported LD50 for the adult, male Fisher rat is 1.2 mg aflatoxin B1/kg body weight (i.p.); we have found that male C57BL/6 mice survive single doses of aflatoxin B1 as high as 60 mg/kg (i.p.). We have demonstrated a 1000-fold greater LC50 of aflatoxin B1 for primary mouse liver cell cultures from C57BL/6 male mice (3 X 10(-5) M) than for primary liver cells from F344 male rats (3 X 10(-8) M). In 4 h of exposure to a non-toxic dose (1 X 10(-9) M) of [3H]aflatoxin B1, cultured rat liver cells accumulated up to 5-fold higher concentrations of 3H label than did mouse liver cells. The difference in cell-associated counts was due largely to higher levels of aflatoxin B1 metabolites bound to macromolecules in the rat cells.
mesh_terms: D016604:Aflatoxin B1; D000348:Aflatoxins / Q000378:metabolism / Q000633:toxicity*; D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002478:Cells, Cultured; D007928:Lethal Dose 50; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D051381:Rats; D011916:Rats, Inbred F344; D013045:Species Specificity; D014316:Tritium
chemical_list: D000348:Aflatoxins; D014316:Tritium; D016604:Aflatoxin B1