Experiments on guinea pigs with the use of electrophysiological methods (short-latency auditory evoked potentials, SLAEPs, and distortion product otoacoustic emission, DPOAE) have demonstrated damage of outer hair cells following application of therapeutic doses of cisplatin. It is concluded that finding of the logarithmic amplitude-time dependence for the first SLAEPs peak permits to diagnose an injury to outer hair cells.
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J Otol
July 2024
Department of Biochemistry and Molecular Biology, and Key Laboratory for Genetic Hearing Disorders in Shandong, Binzhou Medical University, 346 Guanhai Road, Yantai, 264003, Shandong, PR China.
Objectives: Deletion of gene in mice has been linked to progressive hearing loss and degeneration of cochlear cells. Cisplatin, an antitumor drug, can cause various side effects, including ototoxicity. The aim of this study was to investigate the effects of on cisplatin-induced hearing impairment in mice and to explore the possible mechanism.
View Article and Find Full Text PDFCommun Biol
December 2024
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610213, China.
Mammals suffer permanent hearing impairment from the loss of auditory hair cells due to their inability to regenerate. In contrast, lower vertebrates exhibit extraordinary capacity for hair cell regeneration and hearing restoration, but the mechanisms remain unclear. Here we characterize the single-cell atlas of Xenopus laevis inner ear and perform a comprehensive comparison with mouse model.
View Article and Find Full Text PDFExp Anim
December 2024
Deafness Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science.
An unconventional myosin, myosin VI gene (MYO6), contributes to recessive and dominant hearing loss in humans and mice. The Kumamoto shaker/waltzer (ksv) mouse is a model of deafness resulting from a splice-site mutation in Myo6. While ksv/ksv homozygous mice are deaf due to cochlear hair cell stereocilia fusion at the neonatal stage, the hearing phenotypes of ksv/+ heterozygous mice have been less clear.
View Article and Find Full Text PDFNeurobiol Dis
December 2024
Senior Department of Otorhinolaryngology Head and Neck Surgery, The 6th Medical Center, Chinese PLA General Hospital, Medical School of Chinese PLA, State Key Laboratory of Hearing and Balance Science, National Clinical Research Center for Otorhinolaryngologic Diseases, Beijing 100048, China. Electronic address:
Repeated low-intensity noise exposure is prevalent in industrialized societies. It has long been considered risk-free until recent evidence suggests that the temporary threshold shift (TTS) induced by such exposure might be a high-risk factor for hearing loss. This study was conducted to further investigate the manner in which repeated low-intensity noise exposure contributed to hearing damage.
View Article and Find Full Text PDFActa Otolaryngol
December 2024
Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China.
Backgrounds: Due to the therapeutic needs of inner ear diseases, a simple method of inner ear drug delivery has been under exploration. Postauricular administration, which involves injecting the drug through the middle of the retroauricular groove, is a potential novel approach, but its mechanisms remain unclear.
Objectives: To investigate threshold shifts in the auditory brainstem response (ABR), as well as the morphology and quantity of hair cells on the bilateral inner ear of guinea pigs after postauricular neomycin administration.
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