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Abstract
The present study is an effort to identify a potent chemopreventive agent against cancer, in which oxidative stress plays an important causative role. The modulatory effect of mangiferin on mitochondrial lipid peroxidation (LPO), tricarboxylic acid (TCA) cycle key enzymes and electron transport chain complexes was investigated against lung carcinogenesis induced by benzo(a)pyrene (50 mg kg−1 b/w orally) in Swiss albino mice. Decreased activities of electron transport chain complexes and TCA cycle key enzymes such as isocitrate dehydrogenase (ICDH), succinate dehydrogenase (SDH), malate dehydrogenase (MDH) and alpha-ketoglutarate dehydrogenase (α-KGDH), in lung cancer bearing animals were observed. Pre- and post-treatment with mangiferin (100 mg kg−1 b/w orally) for 18 weeks, prevented the above biochemical changes, which were inclined towards normal control animal values. This study further confirms the chemopreventive and chemotherapeutic effect of mangiferin and these results are consistent with our hypothesis that mangiferin is a promising chemopreventive agent.