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Samara P, Athanasopoulos M, Markatos N, Athanasopoulos I. From sound waves to molecular and cellular mechanisms: Understanding noise‑induced hearing loss and pioneering preventive approaches (Review). MEDICINE INTERNATIONAL 2024; 4:60. [PMID: 39114262 PMCID: PMC11304036 DOI: 10.3892/mi.2024.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 07/22/2024] [Indexed: 08/10/2024]
Abstract
Noise-induced hearing loss (NIHL) is a significant and urgent global public health concern, arising from prolonged exposure to elevated levels of noise. This auditory impairment harms delicate inner ear structures, particularly the essential hair cells transmitting auditory signals to the brain. Recognized by the World Health Organization as a major contributor to worldwide hearing loss, NIHL requires a comprehensive examination of its molecular and cellular mechanisms. Animal models emerge as indispensable tools for unraveling these intricacies, allowing researchers to simulate and study the impact of noise exposure on auditory structures, shedding light on the interplay of oxidative stress, inflammation and immune responses-crucial factors in NIHL progression. The present review focuses on elucidating the molecular mechanisms of NIHL, with a specific emphasis on findings derived from animal models, alongside the exploration of thorough preventive strategies, including protective measures and probing potential interventions. Understanding the molecular underpinnings not only provides insight into targeted treatment approaches, but also unlocks pathways for exploring and implementing preventive actions. This approach not only deepens the current comprehension of NIHL, but also has the potential to influence the shaping of public health policies, offering a nuanced perspective on this prevalent auditory disorder.
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Affiliation(s)
- Pinelopi Samara
- Children's Oncology Unit ‘Marianna V. Vardinoyannis-ELPIDA’, Aghia Sophia Children's Hospital, 11527 Athens, Greece
| | | | - Nikolaos Markatos
- Otolaryngology-Head and Neck Surgery, Athens Pediatric Center, 15125 Athens, Greece
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Min X, Kong X, Wang W. L-Shaped Associations Between Composite Dietary Antioxidant Index and Hearing Loss: A Cross-Sectional Study From the National Health and Nutrition Examination Survey. Biol Res Nurs 2024:10998004241261400. [PMID: 38869482 DOI: 10.1177/10998004241261400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
BACKGROUND Oxidative stress has been implicated in the pathogenesis of hearing loss (HL). Dietary intake is a modifiable factor that could influence the oxidant and antioxidant capacity. We hypothesized that a higher composite dietary antioxidant index (CDAI) is associated with a reduced odds for HL. METHODS Adult participants from the 2001-2012 & 2015-2018 National Health and Nutrition Examination Study were included in this cross-sectional study. The CDAI was calculated from vitamins A, C, E, selenium, zinc, and caretenoid through 24-h dietary recall. Outcomes were HL, speech frequency HL (SFHL), and high frequency HL (HFHL). The associations between CDAI and HL, SFHL, and HFHL were evaluated by weighted multivariable logistic regression. RESULTS CDAI was associated with lower odds of HL (OR = 0.98, 95%CI 0.95-1.00, p = .043) and SFHL (OR = 0.97, 95%CI 0.95-1.00, p = .041), but not HFHL (OR = 0.98, 95%CI 0.96-1.00, p = .118) after adjustment for confounders. The multivariable-adjusted model showed a significant trend toward decreased risk of HL, SFHL, and HFHL with increasing CDAI quartile (all p for trend < 0.05). Restricted cubic spline analysis suggested that the associations between CDAI and HL, SFHL, and HFHL were L-shaped, with inflection points of CDAI at -0.61, 2.33, and 4.32, respectively. Subgroup analysis showed that participants with exposure to loud noise benefited from a higher CDAI for SFHL (p for interaction = 0.039). CONCLUSION Higher CDAI is associated with reduced odds of HL and SFHL in the U.S. adult population and serves as a promising intervention target to be further explored in prospective longitudinal studies in the future.
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Affiliation(s)
- Xinting Min
- Department of Otolaryngology, Jing'an District Central Hospital of Shanghai, Fudan University, Shanghai, China
| | - Xiufang Kong
- Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Wang
- Department of Nephrology, Shanghai Tenth People's Hospital, Shanghai, China
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Feng B, Dong T, Song X, Zheng X, Jin C, Cheng Z, Liu Y, Zhang W, Wang X, Tao Y, Wu H. Personalized Porous Gelatin Methacryloyl Sustained-Release Nicotinamide Protects Against Noise-Induced Hearing Loss. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305682. [PMID: 38225752 DOI: 10.1002/advs.202305682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/11/2023] [Indexed: 01/17/2024]
Abstract
There are no Food and Drug Administration-approved drugs for treating noise-induced hearing loss (NIHL), reflecting the absence of clear specific therapeutic targets and effective delivery strategies. Noise trauma is demonstrated results in nicotinamide adenine dinucleotide (NAD+) downregulation and mitochondrial dysfunction in cochlear hair cells (HCs) and spiral ganglion neurons (SGNs) in mice, and NAD+ boosted by nicotinamide (NAM) supplementation maintains cochlear mitochondrial homeostasis and prevents neuroexcitatory toxic injury in vitro and ex vivo, also significantly ameliorated NIHL in vivo. To tackle the limited drug delivery efficiency due to sophisticated anatomical barriers and unique clearance pathway in ear, personalized NAM-encapsulated porous gelatin methacryloyl (PGMA@NAM) are developed based on anatomy topography of murine temporal bone by micro-computed tomography and reconstruction of round window (RW) niche, realizing hydrogel in situ implantation completely, NAM sustained-release and long-term auditory preservation in mice. This study strongly supports personalized PGMA@NAM as NIHL protection drug with effective inner ear delivery, providing new inspiration for drug-based treatment of NIHL.
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Affiliation(s)
- Baoyi Feng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Tingting Dong
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Biobank of Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Xinyu Song
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China
| | - Xiaofei Zheng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Chenxi Jin
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Zhenzhe Cheng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Yiqing Liu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Wenjie Zhang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China
| | - Xueling Wang
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Biobank of Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Yong Tao
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
| | - Hao Wu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200011, P. R. China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, No.115, Jinzun Road, Shanghai, 200125, P. R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, No.115, Jinzun Road, Shanghai, 200125, P. R. China
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Balk SJ, Bochner RE, Ramdhanie MA, Reilly BK. Preventing Excessive Noise Exposure in Infants, Children, and Adolescents. Pediatrics 2023; 152:e2023063753. [PMID: 37864408 DOI: 10.1542/peds.2023-063753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 10/22/2023] Open
Abstract
Noise exposure is a major cause of hearing loss in adults. Yet, noise affects people of all ages, and noise-induced hearing loss is also a problem for young people. Sensorineural hearing loss caused by noise and other toxic exposures is usually irreversible. Environmental noise, such as traffic noise, can affect learning, physiologic parameters, and quality of life. Children and adolescents have unique vulnerabilities to noise. Children may be exposed beginning in NICUs and well-baby nurseries, at home, at school, in their neighborhoods, and in recreational settings. Personal listening devices are increasingly used, even by small children. Infants and young children cannot remove themselves from noisy situations and must rely on adults to do so, children may not recognize hazardous noise exposures, and teenagers generally do not understand the consequences of high exposure to music from personal listening devices or attending concerts and dances. Environmental noise exposure has disproportionate effects on underserved communities. In this report and the accompanying policy statement, common sources of noise and effects on hearing at different life stages are reviewed. Noise-abatement interventions in various settings are discussed. Because noise exposure often starts in infancy and its effects result mainly from cumulative exposure to loud noise over long periods of time, more attention is needed to its presence in everyday activities starting early in life. Listening to music and attending dances, concerts, and celebratory and other events are sources of joy, pleasure, and relaxation for many people. These situations, however, often result in potentially harmful noise exposures. Pediatricians can potentially lessen exposures, including promotion of safer listening, by raising awareness in parents, children, and teenagers. Noise exposure is underrecognized as a serious public health issue in the United States, with exposure limits enforceable only in workplaces and not for the general public, including children and adolescents. Greater awareness of noise hazards is needed at a societal level.
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Affiliation(s)
- Sophie J Balk
- Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
| | - Risa E Bochner
- Department of Pediatrics, New York City Health and Hospitals Harlem, Columbia University Vagelos College of Physicians and Surgeons, New York, New York
| | | | - Brian K Reilly
- Otolaryngology and Pediatrics, George Washington University Medical School, Children's National Hospital, Washington, District of Columbia
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Tan WJT, Song L. Role of mitochondrial dysfunction and oxidative stress in sensorineural hearing loss. Hear Res 2023; 434:108783. [PMID: 37167889 DOI: 10.1016/j.heares.2023.108783] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 04/19/2023] [Accepted: 04/28/2023] [Indexed: 05/13/2023]
Abstract
Sensorineural hearing loss (SNHL) can either be genetically inherited or acquired as a result of aging, noise exposure, or ototoxic drugs. Although the precise pathophysiological mechanisms underlying SNHL remain unclear, an overwhelming body of evidence implicates mitochondrial dysfunction and oxidative stress playing a central etiological role. With its high metabolic demands, the cochlea, particularly the sensory hair cells, stria vascularis, and spiral ganglion neurons, is vulnerable to the damaging effects of mitochondrial reactive oxygen species (ROS). Mitochondrial dysfunction and consequent oxidative stress in cochlear cells can be caused by inherited mitochondrial DNA (mtDNA) mutations (hereditary hearing loss and aminoglycoside-induced ototoxicity), accumulation of acquired mtDNA mutations with age (age-related hearing loss), mitochondrial overdrive and calcium dysregulation (noise-induced hearing loss and cisplatin-induced ototoxicity), or accumulation of ototoxic drugs within hair cell mitochondria (drug-induced hearing loss). In this review, we provide an overview of our current knowledge on the role of mitochondrial dysfunction and oxidative stress in the development of SNHL caused by genetic mutations, aging, exposure to excessive noise, and ototoxic drugs. We also explore the advancements in antioxidant therapies for the different forms of acquired SNHL that are being evaluated in preclinical and clinical studies.
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Affiliation(s)
- Winston J T Tan
- Department of Surgery (Otolaryngology), Yale University School of Medicine, New Haven, CT, 06510, USA; Department of Physiology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, 1023, New Zealand.
| | - Lei Song
- Department of Surgery (Otolaryngology), Yale University School of Medicine, New Haven, CT, 06510, USA; Department of Otolaryngology - Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China.
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Long M, Zhu X, Wei X, Zhao D, Jiang L, Li C, Jin D, Miao C, Du Y. Magnesium in renal fibrosis. Int Urol Nephrol 2022; 54:1881-1889. [PMID: 35060008 DOI: 10.1007/s11255-022-03118-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/11/2022] [Indexed: 12/12/2022]
Abstract
PURPOSE Renal fibrosis (RF) is the main pathological feature of chronic kidney disease (CKD). The main focus of research on treatment for CKD is to develop strategies that delay or prevent RF from progressing to end-stage renal disease (ESRD). Inflammation and oxidative stress occur during all stages of CKD. The magnesium cation (Mg2+) can reduce inflammation and oxidative stress, regulate apoptosis, and improve RF, and magnesium-based therapies are promising new treatments that can prevent RF. We reviewed the current evidence on the effects of magnesium in RF and examined the possible mechanism of magnesium in delaying RF. METHODS We searched PubMed, Web of Science, and EMBASE for articles on magnesium and fibrosis, with a focus on magnesium and RF. RESULTS Inflammation, oxidative stress, and apoptosis are related to the occurrence of CKD. Previous research showed that Mg2+ inhibits the differentiation of inflammatory cells, down-regulates the production of inflammatory cytokines, reduces inflammation, and reduces the production of reactive oxygen species (ROS) and oxidative stress. In addition, Mg2+ also regulates apoptosis and protects renal tubular function. Magnesium may also regulate TRPM6/7, promote the secretion of klotho protein and improve renal fibrosis. Therefore, Mg2+ can protect the kidney from damage and slow down the progression of RF through many molecular and cellular effects. Some of the anti-fibrotic effects of Mg2+ may be related to its antagonism of intracellular Ca2+. CONCLUSION Magnesium may prevent the progression of renal fibrosis and delay CKD by reducing renal inflammation and oxidative stress, and by regulating fibrosis-related signaling pathways and cytokines.
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Affiliation(s)
- Mengtuan Long
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Xiaoyu Zhu
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Xuejiao Wei
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Dan Zhao
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Lili Jiang
- Physical Examination Center, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Chenhao Li
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Die Jin
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Changxiu Miao
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China
| | - Yujun Du
- Department of Nephrology, The First Hospital of Jilin University, 1 Xinmin Street, Chaoyang District, Changchun, 130021, Jilin, People's Republic of China.
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Fuentes-Santamaría V, Alvarado JC, Mellado S, Melgar-Rojas P, Gabaldón-Ull MC, Cabanes-Sanchis JJ, Juiz JM. Age-Related Inflammation and Oxidative Stress in the Cochlea Are Exacerbated by Long-Term, Short-Duration Noise Stimulation. Front Aging Neurosci 2022; 14:853320. [PMID: 35450058 PMCID: PMC9016828 DOI: 10.3389/fnagi.2022.853320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/14/2022] [Indexed: 12/29/2022] Open
Abstract
We have previously reported that young adult rats exposed to daily, short-duration noise for extended time periods, develop accelerated presbycusis starting at 6 months of age. Auditory aging is associated with progressive hearing loss, cell deterioration, dysregulation of the antioxidant defense system, and chronic inflammation, among others. To further characterize cellular and molecular mechanisms at the crossroads between noise and age-related hearing loss (ARHL), 3-month-old rats were exposed to a noise-accelerated presbycusis (NAP) protocol and tested at 6 and 16 months of age, using auditory brainstem responses, Real-Time Reverse Transcription-Quantitative PCR (RT-qPCR) and immunocytochemistry. Chronic noise-exposure leading to permanent auditory threshold shifts in 6-month-old rats, resulted in impaired sodium/potassium activity, degenerative changes in the lateral wall and spiral ganglion, increased lipid peroxidation, and sustained cochlear inflammation with advancing age. Additionally, at 6 months, noise-exposed rats showed significant increases in the gene expression of antioxidant enzymes (superoxide dismutase 1/2, glutathione peroxidase 1, and catalase) and inflammation-associated molecules [ionized calcium binding adaptor molecule 1, interleukin-1 beta (IL-1β), and tumor necrosis factor-alpha]. The levels of IL-1β were upregulated in the spiral ganglion and spiral ligament, particularly in type IV fibrocytes; these cells showed decreased levels of connective tissue growth factor and increased levels of 4-hydroxynonenal. These data provide functional, structural and molecular evidence that age-noise interaction contributes to exacerbating presbycusis in young rats by leading to progressive dysfunction and early degeneration of cochlear cells and structures. These findings contribute to a better understanding of NAP etiopathogenesis, which is essential as it affects the life quality of young adults worldwide.
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Affiliation(s)
- Verónica Fuentes-Santamaría
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Juan Carlos Alvarado
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Susana Mellado
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Pedro Melgar-Rojas
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - María Cruz Gabaldón-Ull
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - José J. Cabanes-Sanchis
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - José M. Juiz
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Albacete, Spain
- Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
- Department of Otolaryngology, Hannover Medical School, NIFE-VIANNA, Cluster of Excellence Hearing4all-German Research Foundation, Hanover, Germany
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