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자료유형
학술저널
저자정보
Owen Woods (Sainte-Justine University Hospital Center) Issam Saliba (Sainte-Justine University Hospital Center)
저널정보
대한청각학회 Journal of Audiology & Otology Journal of Audiology & Otology Vol.22 No.2
발행연도
2018.1
수록면
75 - 79 (5page)

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Locacorten Vioform (Novartis UK) is frequently prescribed forotomycosis. Its component, Clioquinol, also has anti-bacterial properties. Up to this point, itsototoxic potential has not been evaluated. Our objective aims to evaluate Locacorten Vioform’spotential ototoxicity when applied directly to the middle ear cavity. Materials andMethods: We performed an experimental prospective animal study in our animal researchcenter with 20 Hartley guinea pigs divided into 2 groups. The first group (experimental) wastreated with Locacorten Vioform in one ear and with a physiologic saline solution in the other. The second group (positive control) was treated with concentrated gentamycin in one earand physiologic saline in the other. Auditory brainstem response measurements were obtainedbefore and after three sets of injections. Statistics were analyzed using a varianceanalysis with repeated measures. The histological state of cochlear outer hair cells was comparedbetween the two groups using scanning electron microscopy. Results: Average hearingloss in ears treated with Locacorten Vioform was 32.1 dB, compared with a 2.5 dB averageloss in the saline-treated ears. Ears treated with gentamycin lost an average of 33.0 dB. There were clinically and statistically significant differences between the two ears of the guineapigs in both groups (p<0.001). Scanning electron microscopy revealed severe pericochlearand cochlear inflammation and ossification in the Locacorten Vioform-treated ears. Gentamycin caused significant destruction of outer hair cell architecture. Conclusions: LocacortenVioform induces a hearing loss similar to that caused by gentamycin when applieddirectly to the middle ear of a guinea pig model. Electron microscopy indicates a pericochlearand cochlear inflammatory reaction with ossification.

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