Tropisetron attenuates cisplatin-induced nephrotoxicity in mice.

Abstract

Nephrotoxicity is one of the most important complications of cisplatin, a potent chemotherapeutic agent used in the treatment of various malignancies. 5-HT3 antagonists are widely used to counteract chemotherapy-induced emesis and new studies reveal that they poses notable anti-inflammatory properties. In current study, we investigated the effects of 5-HT3 antagonists on cisplatin induced nephrotoxicity in mice. To identify the underlying mechanism of renal protection by tropisetron, we investigated the probable involvement of alpha7 nicotinic acetylcholine receptor (α7nAChR). A single injection of cisplatin (20mg/kg; i.p) induced nephrotoxicity, 5-HT3 antagonists (tropisetron, granisetron and ondansetron,) were given twice daily for 3 day (3mg/kg; i.p). Finally animals were euthanized and blood sample was collected to measure urea and creatinin level. Also kidneys were removed for histopathological examination and biochemical measurements including glutathione (GSH), malondialdehyde (MDA), superoxide dismutase (SOD) activity, inducible nitric oxide synthase (iNOS) expression and inflammatory cytokines. Tropisetron decreased the expression of inflammatory molecules including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and iNOS and improved histopathological damage and renal dysfunction. However other 5-HT3 antagonists, granisetron or ondansetron do not have any elicit effects on biochemical markers and histological damages. Since methyllycaconitine, antagonist of α7nAChR, was unable to reverse the beneficial effect of tropisetron, we concluded that this effect of tropisetron is not mediated by α7nAChR.Our results showed that tropisetron treatment markedly ameliorated the experimental cisplatin induced-nephrotoxicity and this effect might be 5-HT3 receptor and α7nAChR independent.

• Authors: Mohammad Reza Zirak, Reza Rahimian, Mahmoud Ghazi-Khansari, Ata Abbasi, Ali Razmi, Shahram Ejtemaei Mehr, Kazem Mousavizadeh, Ahmad Reza Dehpour
• Journal: European journal of pharmacology (Eur J Pharmacol) Vol. 738 Pg. 222-9 (Sep 05 2014) ISSN: 1879-0712 [Electronic] Netherlands
• PMID: 24905858 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2014 Elsevier B.V. All rights reserved.

Chemical References

• Cytokines
• Indoles
• Serotonin 5-HT3 Receptor Antagonists
• alpha7 Nicotinic Acetylcholine Receptor
• Tropisetron
• Nitric Oxide Synthase Type II
• Cisplatin

Topics

• Animals
• Body Weight (drug effects)
• Cisplatin (adverse effects)
• Cytokines (metabolism)
• Gene Expression Regulation, Enzymologic (drug effects)
• Indoles (pharmacology)
• Kidney (drug effects, metabolism)
• Male
• Mice
• Nitric Oxide Synthase Type II (metabolism)
• Oxidative Stress (drug effects)
• Serotonin 5-HT3 Receptor Antagonists (pharmacology)
• Tropisetron
• alpha7 Nicotinic Acetylcholine Receptor (metabolism)