Abstract
Methanolic extract of Phyllanthus amarus was tested for its anti-mutagenic activity in Salmonella typhimurium strains TA1535, TA100, and TA102 (Ames test). P. amarus extract was able to inhibit the activation and mutagenicity of 2-acetaminofluorene (2-AAF) and aflatoxinB(1) at concentrations of 0.25-2 mg/plate. It was also found to inhibit mutagenicity induced by direct acting mutagens sodium azide (NaN(3)), N-methyl-N-nitro-N-nitrosoguanidine (MNNG), and 4-nitro-0-phenylenediamine (NPD), at concentrations of 1 mg to 0.25 mg/plate. Urinary mutagenicity produced in rats by benzo[a] pyrene was found to be significantly inhibited by the oral administration of Phyllanthus extract. These results indicate significant anti-mutagenicity of the extract in vitro as well as in vivo.
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