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Comparison of the protective effects of intratympanic dexamethasone and methylprednisolone against cisplatin-induced ototoxicity

Published online by Cambridge University Press:  02 February 2016

H E Özel*
Affiliation:
Department of Otolaryngology, Kocaeli Derince Research and Training Hospital, Kocaeli, Turkey
F Özdoğan
Affiliation:
Department of Otolaryngology, Kocaeli Derince Research and Training Hospital, Kocaeli, Turkey
S G Gürgen
Affiliation:
Department of Histology and Embryology, Celal Bayar University School of Vocational Health Service, Manisa, Turkey
E Esen
Affiliation:
Department of Otolaryngology, Kocaeli Derince Research and Training Hospital, Kocaeli, Turkey
S Genç
Affiliation:
Department of Otolaryngology, Kocaeli Derince Research and Training Hospital, Kocaeli, Turkey
A Selçuk
Affiliation:
Department of Otolaryngology, Kocaeli Derince Research and Training Hospital, Kocaeli, Turkey
*
Address for correspondence: Dr H E Özel, Kulak Burun Boğaz Kliniği, Kocaeli Derince Eğitim ve Araştırma Hastanesi, 41900 Kocaeli, Turkey Fax: +90 262 2335536 E-mail: drsgenc@yahoo.com

Abstract

Objective:

This study aimed to compare the efficacies of intratympanic dexamethasone and methylprednisolone in preventing in cisplatin-induced ototoxicity in rats.

Methods:

Experimental groups of rats (n = 8 each) received intratympanic isotonic saline, intraperitoneal cisplatin and intratympanic isotonic saline, intraperitoneal cisplatin and intratympanic dexamethasone, or intraperitoneal cisplatin and intratympanic methylprednisolone. Distortion product otoacoustic emission thresholds were compared on days 0 and 10 in all rats, and correlations between drug effects and changes in cochlear histology were evaluated.

Results:

Distortion product otoacoustic emission thresholds were comparable in groups III and IV (p > 0.05). Significant protection against cisplatin-induced ototoxicity was seen in groups III and IV compared with group II (p < 0.05). Dexamethasone and, to a lesser extent, methylprednisolone protected against cellular apoptosis in cisplatin-induced ototoxicity.

Conclusion:

Dexamethasone (and possibly methylprednisolone) may be clinically useful as an intratympanic chemopreventive agent to treat cisplatin ototoxicity. Future clinical studies should investigate the use of dexamethasone for this purpose in adult patients.

Information

Type
Main Articles
Copyright
Copyright © JLO (1984) Limited 2016 

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