Oxidative Stress in Hearing Loss

A special issue of Antioxidants (ISSN 2076-3921).

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1868

Special Issue Editors


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Guest Editor
School of Medicine, Yale University, New Haven, CT, USA
Interests: ear; outer hair cell; inner ear

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Guest Editor
School of Medicine, Yale University, New Haven, CT, USA
Interests: hair cells; auditory; ear; inner; neurosciences; otolaryngology; physiology

Special Issue Information

Dear Colleagues,

The topics of this Special Issue are oxidative stress and hearing loss. As we all know, increased oxidative stress in the inner ear is one of the most dominant etiologies of genetical or environmental hearing loss. In the last two decades or so, hearing loss caused by oxidative stress has continued to be a prominent topic in hearing research, involving both basic research and clinical applications. As most of the research articles are spread out in various journals, this Special Issue will collate the efforts of our colleagues. We hope this Special Issue will lead to strong research on this topic. 

Our objective is to invite authors from multidiscipline research fields to submit relevant research papers and reviews.

Dr. Lei Song
Prof. Dr. Joseph Santos-Sacchi
Guest Editors

Manuscript Submission Information

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Keywords

  • ear
  • outer hair cell
  • inner ear

Published Papers (2 papers)

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Research

23 pages, 24222 KiB  
Article
Nuciferine Protects Cochlear Hair Cells from Ferroptosis through Inhibiting NCOA4-Mediated Ferritinophagy
by Xian Gao, Huanyu Mao, Liping Zhao, Xiang Li, Yaqi Liao, Wenyan Li, Huawei Li and Yan Chen
Antioxidants 2024, 13(6), 714; https://0-doi-org.brum.beds.ac.uk/10.3390/antiox13060714 - 12 Jun 2024
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Abstract
Cisplatin is a widely used antineoplastic drug for treating various types of cancers. However, it can cause severe side effects, such as bilateral and irreversible hearing loss, which significantly impacts quality of life. Ferroptosis, an iron-dependent form of programmed cell death, has been [...] Read more.
Cisplatin is a widely used antineoplastic drug for treating various types of cancers. However, it can cause severe side effects, such as bilateral and irreversible hearing loss, which significantly impacts quality of life. Ferroptosis, an iron-dependent form of programmed cell death, has been implicated in the pathogenesis of cisplatin-induced ototoxicity. Here, we investigated the effects of nuciferine, a natural active ingredient isolated from lotus species, on the ferroptosis of cochlear hair cells. Firstly, our results demonstrated that nuciferine can protect hair cells against RSL3-induced and cisplatin-induced damage. Secondly, nuciferine treatment reduced ferrous iron (Fe2+) overload in cochlear hair cells via inhibiting NCOA4-mediated ferritinophagy. Inhibition of ferritinophagy by knocking down Ncoa4 alleviated cisplatin-induced ototoxicity. Importantly, nuciferine treatment mitigated cochlear hair cell loss and damage to ribbon synapse, and improved mouse hearing function in an acute cisplatin-induced hearing loss model. Our findings highlight the role of NCOA4-mediated ferritinophagy in the pathogenesis of cisplatin-induced ototoxicity and provide evidence for nuciferine as a promising protective agent for treating cisplatin-induced hearing loss. Full article
(This article belongs to the Special Issue Oxidative Stress in Hearing Loss)
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14 pages, 3993 KiB  
Article
Lercanidipine’s Antioxidative Effect Prevents Noise-Induced Hearing Loss
by Zhaoqi Guo, E Tian, Sen Chen, Jun Wang, Jingyu Chen, Weijia Kong, Debbie C. Crans, Yisheng Lu and Sulin Zhang
Antioxidants 2024, 13(3), 327; https://0-doi-org.brum.beds.ac.uk/10.3390/antiox13030327 - 7 Mar 2024
Viewed by 1067
Abstract
Noise-induced hearing loss (NIHL) is a prevalent form of adult hearing impairment, characterized by oxidative damage to auditory sensory hair cells. Although certain dihydropyridines, the L-type calcium channel blockers, exhibit protective properties against such damage, the ability of third-generation dihydropryidines like lercanidipine to [...] Read more.
Noise-induced hearing loss (NIHL) is a prevalent form of adult hearing impairment, characterized by oxidative damage to auditory sensory hair cells. Although certain dihydropyridines, the L-type calcium channel blockers, exhibit protective properties against such damage, the ability of third-generation dihydropryidines like lercanidipine to mitigate NIHL remains unclear.We utilized glucose oxidase (GO)-treated OC1 cell lines and cochlear explants to evaluate the protective influence of lercanidipine on hair cells. To further investigate its effectiveness, we exposed noise-stimulated mice in vivo and analyzed their hearing thresholds. Additionally, we assessed the antioxidative capabilities of lercanidipine by examining oxidation-related enzyme expression and levels of oxidative stress markers, including 3-nitrotyrosine (3NT) and 4-hydroxynonenal (4HNE). Our findings demonstrate that lercanidipine significantly reduces the adverse impacts of GO on both OC-1 cell viability (0.3 to 2.5 µM) and outer hair cell (OHC) survival in basal turn cochlear explants (7 µM). These results are associated with increased mRNA expression of antioxidant enzyme genes (HO-1, SOD1/2, and Txnrd1), along with decreased expression of oxidase genes (COX-2, iNOS). Crucially, lercanidipine administration prior to, and following, noise exposure effectively ameliorates NIHL, as evidenced by lowered hearing thresholds and preserved OHC populations in the basal turn, 14 days post-noise stimulation at 110 dB SPL. Moreover, our observations indicate that lercanidipine’s antioxidative action persists even three days after simultaneous drug and noise treatments, based on 3-nitrotyrosine and 4-hydroxynonenal immunostaining in the basal turn. Based on these findings, we propose that lercanidipine has the capacity to alleviate NIHL and safeguard OHC survival in the basal turn, potentially via its antioxidative mechanism. These results suggest that lercanidipine holds promise as a clinically viable option for preventing NIHL in affected individuals. Full article
(This article belongs to the Special Issue Oxidative Stress in Hearing Loss)
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