Σφακιανάκης Αλέξανδρος
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Πέμπτη 9 Νοεμβρίου 2017

The protective effects of whortleberry extract against cisplatin-induced ototoxicity in rats

Publication date: Available online 10 November 2017
Source:Brazilian Journal of Otorhinolaryngology
Author(s): Doğukan Özdemir, Abdulkadir Özgür, Yıldıray Kalkan, Suat Terzi, Levent Tümkaya, Adnan Yılmaz, Metin Çeliker, Engin Dursun
IntroductionCisplatin is one of the main chemotherapeutic agents used for the treatment of many types of cancer. However, ototoxicity, one of the most serious side effects of cisplatin, restricts its usage.ObjectiveWe aimed to investigate the protective effects of whortleberry extract against cisplatin-induced ototoxicity by evaluating hearing and histopathological cochlear damage and by measuring the biochemical parameters affected byoxidative stress.MethodsForty-eight male rats were included in the study after performing Distortion Product Otoacoustic Emission test to confirm that their hearing levels were normal. The rats were randomly divided into six groups: the control group, the sham group, and, which received only whortleberry extract, only cisplatin, cisplatin+100mg whortleberry extract, cisplatin+200mg whortleberry extract, respectively. Audiologic investigation was performed by performing the Distortion Product Otoacoustic Emission test at the beginning and at the eighth day of the study. Cardiac blood samples were collected for biochemical analysis, and the rats were sacrificed to obtain cochlear histopathological specimens on the eighth day.ResultsThe results revealed that whortleberry protects hearing against cisplatin-induced ototoxicity independent of the dose. However, high doses of whortleberry extract are needed to prevent histopathological degeneration and oxidative stress.ConclusionThe results obtained in this study show that whortleberry extract has a protective effect against cisplatin-induced ototoxicity.



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