Abstract
Pharmacological intervention to reduce CRC mortality entails the use of oral agents that can avert carcinogenesis. Silibinin, a major component of silymarin isolated from Silybum marianum (L.) was found to possess attractive remedial features. An in vivo study was designed to elucidate the effect of silibinin on the formation of 1, 2 dimethylhydrazine (DMH) induced aberrant crypt foci (ACF), tissue lipid peroxidation (LPO) and enzymic antioxidants status during different phases of experimental colon cancer. DMH alone treated rats showed significantly (p < 0.05) increased size and number of ACF, accompanied by decreased LPO and enzymic antioxidant activities. Administration of silibinin to DMH treated rats inhibited mean colonic ACF and multi-crypt AC/foci and also improved the levels of enzymic antioxidants in a time dependent manner. Histologically no obvious sign of neoplasia was observed in silibinin supplemented DMH treated rats during the various stages of carcinogenesis. Our results show that silibinin possesses potent chemopreventive activity against colon carcinogenesis.
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