Abstract:
CONCLUSION:In the mouse, when a tympanic perforation is present, gadoteridol does not seem to cause ototoxicity. Gadodiamide may cause mild ototoxicity other than toxicity to the outer hair cells of the cochlea. OBJECTIVES:Endolymphatic hydrops have been visualized through intra-tympanic injection of gadolinium-based contrast agents (GBCAs) and three-dimensional fluid-attenuated inversion recovery (3-D FLAIR) magnetic resonance imaging. However, reports on the safety of GBCAs are limited. This study aimed to assess ototoxicity of gadoteridol and gadodiamide. METHOD:In a prospective, randomized, controlled trial, myringotomies in the left ear were performed in 20 male C57 BL/6 mice. After testing the baseline auditory brainstem response (ABR) (range = 8-32 kHz), the test solution (gadoteridol, gadodiamide, saline, or cisplatin) was injected into the left ear. ABR testing was repeated 14 days after test solution application. In morphological experiments, images of post-mortem surface preparations were assessed for cochlear hair cell status. RESULTS:At 14 days following gadoteridol application, there was no significant change in ABR thresholds at 8, 16, or 32 kHz. Gadodiamide application caused a significant change in the ABR threshold at 8 kHz. Apparent cochlear hair cell loss was not observed in the surface preparation after gadoteridol or gadodiamide application.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Nonoyama H,Tanigawa T,Shibata R,Tanaka H,Katahira N,Horibe Y,Takemura K,Murotani K,Ozeki N,Ueda Hdoi
10.1080/00016489.2016.1193892subject
Has Abstractpub_date
2016-11-01 00:00:00pages
1091-1096issue
11eissn
0001-6489issn
1651-2251journal_volume
136pub_type
杂志文章abstract:OBJECTIVE:The aim of this study was to analyze the safety and effectiveness of a new cochlear implant (CI) system developed in China, the Nurotron Venus device. MATERIAL AND METHODS:Fifteen post-lingually deafened patients received Nurotron Venus CIs in our hospital. The safety and effectiveness of the devices were ev...
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doi:10.1080/00016489850154793
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