Investigation of the ototoxicity of gadoteridol (ProHance) and gadodiamide (Omniscan) in mice.

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 Otolaryngol

journal_title

Acta oto-laryngologica

authors

Nonoyama H,Tanigawa T,Shibata R,Tanaka H,Katahira N,Horibe Y,Takemura K,Murotani K,Ozeki N,Ueda H

doi

10.1080/00016489.2016.1193892

subject

Has Abstract

pub_date

2016-11-01 00:00:00

pages

1091-1096

issue

11

eissn

0001-6489

issn

1651-2251

journal_volume

136

pub_type

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