Ferric nitrilotriacetate (Fe-NTA) is a well-established renal carcinogen. Here, we have shown that Pluchea lanceolata (PL) belonging to the family Asteraceae. PL attenuates Fe-NTA induced renal oxidative stress, hyperproliferative response and renal carcinogenesis in rats. It promoted DEN (N-diethyl nitrosamine) initiated renal carcinogenesis by increasing the percentage incidence of tumors and induces early tumor markers viz. ornithine decarboxylase (ODC) and renal DNA synthesis. Fe-NTA (9 mg Fe/kg body weight, intraperitoneally) also enhances renal lipid peroxidation (LPO), xanthine oxidase (XO) and hydrogen peroxide (H(2)O(2)) generation with reduction in renal glutathione content (GSH), antioxidant enzymes, viz., glutathione peroxidase (GPx), glutathione reductase (GR), catalase (CAT), glucose-6-phosphate dehydrogenase and phase-II metabolizing enzymes such as glutathione-S-transferase and quinone reductase (QR). It also enhances blood urea nitrogen (BUN) and serum creatinine. Oral treatment of rats with PL extract (100 and 200 mg/kg body weight) resulted in significant decrease in lipid peroxidation (LPO), xanthine oxidase (XO), H(2)O(2) generation, blood urea nitrogen (BUN), serum creatinine, renal ODC activity, DNA synthesis (p < 0.001) and incidence of tumors. Renal glutathione content (p < 0.01), its metabolizing enzymes (p < 0.001) and antioxidant enzymes were also recovered to significant level (p < 0.001). Thus, present study supports PL as a potent chemopreventive agent and suppresses Fe-NTA-induced renal carcinogenesis and oxidative damage response in Wistar rat.
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