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Human & Experimental Toxicology
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Farnesol prevents Fe-NTA-mediated renal oxidative stress and early tumour promotion markers in rats

Tamanna Jahangir

Tajdar Husain Khan

Lakshmi Prasad

Section of Chemoprevention and Nutrition Toxicology, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India

Sarwat Sultana

Section of Chemoprevention and Nutrition Toxicology, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India; Department of Medical Elementology and Toxicology, Faculty of Science, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, Indiasarwat786{at}rediffmail.com

Excess iron deposition in tissues leads to organ dysfunction and impairment. In this study, the protective effects of farnesol (FL), an isoprenoid, against Fe-NTA (9 mg iron/kg body weight i.p.)-induced oxidative damage and early tumour promotion markers are evaluated. The pretreatment of iron-intoxicated rats with 1% and 2%/kg body weight oral dose of FL for 7 consecutive days significantly reversed the iron-induced increase in H2O2 content (P <0.001), malondialdehyde formation, xanthine oxidase activity (P <0.001), ornithine decarboxylase activity (P <0.001) and 3[H]thymidine incorporation in renal DNA (P <0.005) with simultaneous significant depletion in serum toxicity markers blood urea nitrogen (BUN) and creatinine (P <0.001). Significant dose-dependent restoration was recorded in renal glutathione content, its dependent enzymes and other phase II metabolizing enzymes viz., catalase, glutathione-S-transferase and quinone reductase (P <0.001) with prophylactic treatment of FL. Present results support that FL markedly lowers the oxidative damage and appearance of tumour markers, which precludes its development as a chemopreventive tool.

Key Words: chemoprevention • farnesol • Fe-NTA • oxidative damage • tumour promotion markers

Human & Experimental Toxicology, Vol. 25, No. 5, 235-242 (2006)
DOI: 10.1191/0960327106ht616oa
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