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lüll Silymarin and epithelial cancer chemoprevention: how close we are to bedside?Kaur M; Agarwal RToxicol Appl Pharmacol 2007[Nov]; 224 (3): 350-9Failure and high systemic toxicity of conventional cancer therapies have accelerated the focus on the search for newer agents, which could prevent and/or slow-down cancer growth and have more human acceptability by being less or non-toxic. Silymarin is one such agent, which has been extensively used since ages for the treatment of liver conditions, and thus has possibly the greatest patient acceptability. In recent years, increasing body of evidence has underscored the cancer preventive efficacy of silymarin in both in vitro and in vivo animal models of various epithelial cancers. Apart from chemopreventive effects, other noteworthy aspects of silymarin and its active constituent silibinin in cancer treatment include their capability to potentiate the efficacy of known chemotherapeutic drugs, as an inhibitor of multidrug resistance-associated proteins and as an adjunct to the cancer therapeutic drugs due to their organ-protective efficacy specifically liver, and immunostimulatory effects. Widespread use of silymarin for liver health in humans and commercial availability of its formulations with increased bioavailability, further underscore the necessity of carrying out controlled clinical trials with these agents in cancer patients. In this review, we will briefly discuss the outcomes of clinical trials being conducted by us and others in cancer patients to provide insight into the clinical relevance of the observed chemopreventive effects of these agents in various epithelial cancer models.|Animals[MESH]|Antioxidants/chemistry/pharmacology/therapeutic use[MESH]|Chemoprevention/*methods[MESH]|Clinical Trials as Topic[MESH]|Epithelial Cells/*drug effects/pathology[MESH]|Humans[MESH]|Molecular Structure[MESH]|Neoplasms/*drug therapy/pathology[MESH]|Silymarin/chemistry/pharmacology/*therapeutic use[MESH]|Treatment Outcome[MESH] |