Estrogen Abolishes Protective Effect of Erythropoietin against Cisplatin-Induced Nephrotoxicity in Ovariectomized Rats

Author:

Pezeshki Zahra1,Nematbakhsh Mehdi123,Mazaheri Safoora1,Eshraghi-Jazi Fatemeh1,Talebi Ardeshir14,Nasri Hamid13,Safari Tahereh12,Mansouri Azam1,Ashrafi Farzaneh15

Affiliation:

1. Water and Electrolytes Research Center, Isfahan University of Medical Sciences, Isfahan 81745, Iran

2. Department of Physiology, Isfahan University of Medical Sciences, Isfahan 81745, Iran

3. Kidney Diseases Research Center, Isfahan University of Medical Sciences, Isfahan 81745, Iran

4. Department of Clinical Pathology, Isfahan University of Medical Sciences, Isfahan 81745, Iran

5. Department of Internal Medicine, Isfahan University of Medical Sciences, Isfahan 81745, Iran

Abstract

Introduction. Nephrotoxicity is one the side effect of cisplatin therapy and erythropoietin has been candidate as a nephroprotectant agent. However, its nephroprotective effect when it is accompained with estrogen has not been studied in female. Methods. 27 ovariectomized female Wistar rats divided into five groups. Groups 1 & 2 received estradiol valerate (0.5 mg/kg/week) for four weeks, and single dose of cisplatin (7 mg/kg, ip) was administrated at the end of week 3. Then the group 1 was treated with erythropoietin (100 U/kg/day), and the group 2 received vehicle during week 4. Groups 3 and 4 were treated similar to group 1 and 2, except for placebo instead estradiol valerate. Group5 (negative control) received placebo during the study. Animals were killed at the end of week 4. Results. In non-erythropoietin treated rats, cisplatin significantly increased the serum levels of blood urea nitrogen and creatinine (P<0.05). However, these biomarkers significantly decreased by erythropoietin (P<0.05). The weight loss, kidney weight, and kidney tissue damage score in rats treated with cisplatin but without estradiol were significantly less than the values in similar group when estradiol was present (P<0.05). Conclusion. It seems that erythropoietin could protect the kidney against cisplatin-induced nephrotoxicity. This protective effect was not observed when estrogen was present.

Funder

Isfahan University of Medical Sciences

Publisher

Hindawi Limited

Subject

Pulmonary and Respiratory Medicine,Pediatrics, Perinatology, and Child Health

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