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Human & Experimental Toxicology, Vol. 26, No. 6, 509-518 (2007)
DOI: 10.1177/0960327107072392

Nephrotoxicity and its prevention by taurine in tamoxifen induced oxidative stress in mice

Heena Tabassum

Immunotoxicology Laboratory, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, India, Department of Biochemistry, U.C.M.S. & G.T.B. Hospital, Delhi, India

Suhel Parvez

Department of Neurology, University of Magdeburg, Magdeburg, Germany, drsuhelparvez{at}yahoo.com

Hasibur Rehman

Immunotoxicology Laboratory, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, India

Basu Dev Banerjee

Department of Biochemistry, U.C.M.S. & G.T.B. Hospital, Delhi, India

Detlef Siemen

Department of Neurology, University of Magdeburg, Magdeburg, Germany

Sheikh Raisuddin

Immunotoxicology Laboratory, Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, India

Tamoxifen (TAM) is an anti-neoplastic drug used for the treatment of breast cancer. It decreases the hexose monophosphate shunt and thereby increasing the incidence of oxidative stress in cells leading to tissue injury. The present study was undertaken to investigate modulatory effects of taurine on the nephrotoxicity of TAM with special reference to protection against disruption of nonenzymatic and enzymatic antioxidants. Oxidative stress was measured by renal lipid peroxidation (LPO) level, protein carbonyl (PC) content, reduced glutathione (GSH), activities of phase I and II drug metabolizing and antioxidant enzymes. TAM treatment resulted in a significant (P < 0.001) increase in LPO in kidney tissues as compared to control, while taurine pretreatment showed a significant decrease (P < 0.01) in the LPO in kidneys when compared with the TAM-treated group. Taurine + TAM group animals showed restoration in the level of cytochrome P450 content, activities of glutathione metabolizing enzymes viz., glutathione-S-transferase, glutathione peroxidase, glutathione reductase, glucose-6-phosphate dehydrogenase. Pretreatment of animals with taurine markedly attenuated, PC content, restored the depleted nonenzymatic and enzymatic antioxidants. These results clearly demonstrate the role of oxidative stress, and suggest a protective effect of taurine on TAM-induced nephrotoxicity in mice. Human & Experimental Toxicology (2007) 26: 509—518

Key Words: antioxidant enzymes • nephrotoxicity • oxidative stress • tamoxifen: taurine


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