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Ahn Y, Choi JS, Kim DH, Batsaikhan T, Seo YJ. A validation study of auditory function in an aminoglycoside-furosemide ototoxicity mouse model: Auditory brainstem response and distortion product otoacoustic emissions. TOXICOLOGY RESEARCH AND APPLICATION 2021. [DOI: 10.1177/23978473211016816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Sensorineural hearing loss due to ototoxic drugs remains as a conflict as the treatment option with aminoglycosides. Ototoxic mouse model was produced with the administration of ototoxic drugs aminoglycoside kanamycin and loop-diuretic furosemide, thus validation of auditory function of the mouse model is needed to determine the efficacy of the drugs. Kanamycin sulfate 550 mg/kg (VWR life sciences, PA, USA) and furosemide 130 mg/kg (Lasix, Handok, Korea) were administered through subcutaneous and intraperitoneal injection respectively. Auditory brainstem response and distortion otoacoustic emission tests were performed on days 3,5,7,10,14 post administration of the ototoxic drug. Thresholds in response to the stimulus given in the auditory brainstem recordings and distortion otoacoustic emission tests were obtained. The hearing threshold shift to high stimulus intensity was observed post administration of the ototoxic drug. Latency of the ABR peak waves were recorded and analyzed, latency delay was observed as hearing threshold increases. These findings will further support in the application of this animal model in various studies regarding ototoxic hearing loss.
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Affiliation(s)
- Yeji Ahn
- Research Institute of Hearing Enhancement, Wonju College of Medicine, Yonsei University, Wonju, South Korea
- Department of Otorhinolaryngology, Wonju College of Medicine, Yonsei University, Wonju, South Korea
| | - Jin Sil Choi
- Research Institute of Hearing Enhancement, Wonju College of Medicine, Yonsei University, Wonju, South Korea
- Department of Otorhinolaryngology, Wonju College of Medicine, Yonsei University, Wonju, South Korea
| | - Dae Hyun Kim
- Department of Medicine, Wonju College of Medicine, Yonsei University, Wonju, South Korea
| | - Temuulen Batsaikhan
- Research Institute of Hearing Enhancement, Wonju College of Medicine, Yonsei University, Wonju, South Korea
- Department of Otorhinolaryngology, Wonju College of Medicine, Yonsei University, Wonju, South Korea
| | - Young Joon Seo
- Research Institute of Hearing Enhancement, Wonju College of Medicine, Yonsei University, Wonju, South Korea
- Department of Otorhinolaryngology, Wonju College of Medicine, Yonsei University, Wonju, South Korea
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Effect of early postnatal air-conduction auditory deprivation on the development and function of the rat spiral ganglion. The Journal of Laryngology & Otology 2011; 125:917-23. [PMID: 21729433 DOI: 10.1017/s0022215111001356] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To evaluate the effect of early postnatal air-conduction auditory deprivation on the development and function of the rat spiral ganglion. STUDY DESIGN Randomised animal study. METHODS Sixty neonatal Sprague-Dawley rats were randomly divided into two groups: controls (n = 30) given regular chow and water ad libitum; and study animals (n = 30) fed within a soundproof chamber. Auditory brainstem response testing was conducted in both groups on postnatal day 42. RESULTS Auditory deprivation between postnatal days 12 and 42 resulted in an increased hearing threshold and reduced auditory brainstem response amplitudes, together with degeneration of type I spiral ganglion neurons and the presence of apoptotic cells. CONCLUSION Non-invasive auditory deprivation during a critical developmental period resulted in numerous changes in rat cochlear function and morphology.
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