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Biosci Biotechnol Biochem. 1996 Dec;60(12):2086-8.

Antimutagenic effects of ajoene, an organosulfur compound derived from garlic.

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Bio Development Division, Nagoya Seiraku Co., Ltd., Japan.


The antimutagenic effects of ajoene, which is an organosulfur compound derived from garlic, were investigated by the Ames test. Ajoene inhibited mutagenesis induced by both benzo[a]pyrene (B[a]P) and 4-nitro-1,2-phenylenediamine (NPD) in a dose-dependent manner. In particular, NPD-induced mutagenesis was more effectively suppressed by ajoene than the B[a]P-induced type. Furthermore, the inhibition of mutagenesis by ajoene was more effective for transition-type mutations than for the frame shift type. HPLC analysis of B[a]P metabolism in the presence of the rat liver microsomal fraction (S-9) showed that ajoene dose-dependently inhibited the metabolic activation of B[a]P. This suggests that ajoene affected the metabolic enzymes in the S-9 fraction.

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