Page last updated: 2024-10-06

Aflatoxin B1 metabolism

Proteins (0)

Compounds (6)

CompoundDescription
aflatoxin b1-2,3-oxide
aflatoxin q1
8,9-dihydro-8-(S-glutathionyl)-9-hydroxyaflatoxin B1structure given in first source
aflatoxin m1A 4-hydroxylated metabolite of AFLATOXIN B1, one of the MYCOTOXINS from ASPERGILLUS tainted food. It is associated with LIVER damage and cancer resulting from its P450 activation to the epoxide which alkylates DNA. Toxicity depends on the balance of liver enzymes that activate it (CYTOCHROME P-450) and others that detoxify it (GLUTATHIONE S TRANSFERASE) (Pharmac Ther 50.443 1991). Primates & rat are sensitive while mouse and hamster are tolerant (Canc Res 29.236 1969).
aflatoxin b1A potent hepatotoxic and hepatocarcinogenic mycotoxin produced by the Aspergillus flavus group of fungi. It is also mutagenic, teratogenic, and causes immunosuppression in animals. It is found as a contaminant in peanuts, cottonseed meal, corn, and other grains. The mycotoxin requires epoxidation to aflatoxin B1 2,3-oxide for activation. Microsomal monooxygenases biotransform the toxin to the less toxic metabolites aflatoxin M1 and Q1.
2,3-dihydro-2,3-dihydroxyaflatoxin B(1), 14C-labeled