The effect of diet on aflatoxin B1 binding to hepatic macromolecules in rats.

Autor: Nyathi CB; Department of Preclinical Veterinary Studies, University of Zimbabwe, Mount Pleasant, Harare., Dube N, Hasler JA, Obwolo MJ, Fuhrmann H, Sallmann HP
Jazyk: angličtina
Zdroj: Research communications in chemical pathology and pharmacology [Res Commun Chem Pathol Pharmacol] 1993 Nov; Vol. 82 (2), pp. 199-207.
Abstrakt: Fischer 344 rats were fed a low-fat high carbohydrate diet (HC), an isocaloric fat-containing diet (IC), a hypercaloric fat-containing diet (HF) or rat chow. Covalent binding of AFB1 to liver DNA, RNA and total proteins was investigated in a 24 hour period following administration of a single intraperitoneal dose of AFB1 (1 mg/kg body weight). AFB1 binding to nucleic acids was greatest in the HC and was generally significantly lower (p < 0.05) in the HF, IC and rats fed chow. The results suggest that fat decreases hepatic macromolecular adduct formation by inhibiting activation of AFB1 to the epoxide or by enhancing the activity of detoxification pathways.
Databáze: MEDLINE