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Wu Q, Liu M, Ma T, Hu Q, Yuan C, Zhang X, Zhang T. Research trends and hotspot analysis of age-related hearing loss: A bibliometric analysis from 2019 to 2023. Exp Gerontol 2024; 194:112489. [PMID: 38936439 DOI: 10.1016/j.exger.2024.112489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/29/2024]
Abstract
BACKGROUND Age-related hearing loss (ARHL) - also termed presbycusis - is prevalent among older adults, leading to a range of issues. Although considerable progress in the understanding of ARHL over the decades, available reports lack data from recent years and do not comprehensively reflect the latest advancements and trends. Therefore, our study sought to assess research hotspots and trends in ARHL over the past 5 years to provide the basis for future research. MATERIALS AND METHODS The Web of Science Core Collection database was searched and screened from January 1, 2019 to October 21, 2023, according to the inclusion criteria. CiteSpace (5.8.R3), VOSviewer (1.6.19), and Microsoft Excel 2019 were employed for bibliometric analysis and visualization. RESULTS 3084 articles from 92 countries led by the United States and China were included. There has been a steady upward trend in the number of publications from 2019 to 2023. The most productive institutions, authors, and journals are Johns Hopkins University (n = 113), Lin FR (n = 66), and Ear and Hearing (n = 135), respectively. Trend topic analyses revealed that "cochlear synaptopathy" and "dementia" were the predominant foci. Keywords, including "individuals" and "national health", began to appear. CONCLUSION Over the past 5 years, the annual number of publications has increased significantly and will continue to do so. Research on the mechanism of ARHL, represented by "oxidative stress", is a continuing focus. Emerging topics such as "individual differences" and "national health" may be potential future hotspots in this field.
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Affiliation(s)
- Qilong Wu
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Mengting Liu
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Tianyu Ma
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Qi Hu
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Chenyang Yuan
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Xiaopeng Zhang
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Tianhong Zhang
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China.
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Fuentes-Santamaría V, Benítez-Maicán Z, Alvarado JC, Fernández Del Campo IS, Gabaldón-Ull MC, Merchán MA, Juiz JM. Surface electrical stimulation of the auditory cortex preserves efferent medial olivocochlear neurons and reduces cochlear traits of age-related hearing loss. Hear Res 2024; 447:109008. [PMID: 38636186 DOI: 10.1016/j.heares.2024.109008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/19/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
The auditory cortex is the source of descending connections providing contextual feedback for auditory signal processing at almost all levels of the lemniscal auditory pathway. Such feedback is essential for cognitive processing. It is likely that corticofugal pathways are degraded with aging, becoming important players in age-related hearing loss and, by extension, in cognitive decline. We are testing the hypothesis that surface, epidural stimulation of the auditory cortex during aging may regulate the activity of corticofugal pathways, resulting in modulation of central and peripheral traits of auditory aging. Increased auditory thresholds during ongoing age-related hearing loss in the rat are attenuated after two weeks of epidural stimulation with direct current applied to the surface of the auditory cortex for two weeks in alternate days (Fernández del Campo et al., 2024). Here we report that the same cortical electrical stimulation protocol induces structural and cytochemical changes in the aging cochlea and auditory brainstem, which may underlie recovery of age-degraded auditory sensitivity. Specifically, we found that in 18 month-old rats after two weeks of cortical electrical stimulation there is, relative to age-matched non-stimulated rats: a) a larger number of choline acetyltransferase immunoreactive neuronal cell body profiles in the ventral nucleus of the trapezoid body, originating the medial olivocochlear system.; b) a reduction of age-related dystrophic changes in the stria vascularis; c) diminished immunoreactivity for the pro-inflammatory cytokine TNFα in the stria vascularis and spiral ligament. d) diminished immunoreactivity for Iba1 and changes in the morphology of Iba1 immunoreactive cells in the lateral wall, suggesting reduced activation of macrophage/microglia; d) Increased immunoreactivity levels for calretinin in spiral ganglion neurons, suggesting excitability modulation by corticofugal stimulation. Altogether, these findings support that non-invasive neuromodulation of the auditory cortex during aging preserves the cochlear efferent system and ameliorates cochlear aging traits, including stria vascularis dystrophy, dysregulated inflammation and altered excitability in primary auditory neurons.
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Affiliation(s)
- V Fuentes-Santamaría
- School of Medicine, Universidad de Castilla-La Mancha (UCLM), Campus in Albacete, 02008, Albacete, Spain
| | - Z Benítez-Maicán
- School of Medicine, Universidad de Castilla-La Mancha (UCLM), Campus in Albacete, 02008, Albacete, Spain
| | - J C Alvarado
- School of Medicine, Universidad de Castilla-La Mancha (UCLM), Campus in Albacete, 02008, Albacete, Spain
| | - I S Fernández Del Campo
- Lab. of Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León (INCYL), University of Salamanca, Salamanca, Spain
| | - M C Gabaldón-Ull
- School of Medicine, Universidad de Castilla-La Mancha (UCLM), Campus in Albacete, 02008, Albacete, Spain
| | - M A Merchán
- Lab. of Auditory Neuroplasticity, Institute for Neuroscience of Castilla y León (INCYL), University of Salamanca, Salamanca, Spain
| | - J M Juiz
- School of Medicine, Universidad de Castilla-La Mancha (UCLM), Campus in Albacete, 02008, Albacete, Spain; Hannover Medical School, Dept. of Otolaryngology and Cluster of Excellence "H4all" of the German Research Foundation, DFG, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
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Esperança VJR, Moreira PIO, Chávez DWH, Freitas-Silva O. Evaluation of the safety and quality of Brazil nuts ( Bertholletia excelsa) using the tools of dna sequencing technology and aflatoxin profile. Front Nutr 2024; 11:1357778. [PMID: 38665301 PMCID: PMC11044678 DOI: 10.3389/fnut.2024.1357778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
Introduction Brazil nuts (BNs) result from sustainable extraction and are widely exploited in the Amazon region. Due to the production characteristics in the forest and the nutritional characteristics of these nuts, the occurrence of fungal contamination and the presence of aflatoxins are extensively discussed in the literature as a great aspect of interest and concern. This study aims to evaluate the microbial profile through DNA sequencing and amplification of 16S and ITS genes for bacterial and fungal analysis, respectively, and the presence of mycotoxins using high-performance liquid chromatography with fluorescence detection (HPLC-FD) from different fractions of the nuts processed. Methods The BN samples, harvest A (HA) and harvest B (HB), from two different harvests were collected in an extractive cooperative in the Amazon region for microbiological analysis (from DNA extraction and amplification of 16S genes, bacteria analysis, and ITS for fungi) and mycotoxins (aflatoxins AFB1, AFB2, AFG1, and AFG2) using HPLC-FD/KobraCell®. Results and discussion The samples showed a very different microbiome and aflatoxin profile. Genera such as Rothia (HA) and Cronobacter (HB) were abundant during the analysis of bacteria; as for fungi, the genera Aspergillus, Fusarium, Penicillium, and Alternaria were also considered prevalent in these samples. Soil microorganisms, including those pathogenic and related to inadequate hygienic-sanitary production practices, as well as aflatoxins, were found in the samples. However, they were within the established limits permitted by Brazilian legislation. Nuts have a diverse microbiota and are not restricted to fungi of the genus Aspergillus. The microbiological and toxicological profile can vary significantly within the same nut in the same extraction region and can be exacerbated by global climate changes. Therefore, it is necessary to advance sanitary educational actions by applying good production practices and inspection programs to ensure the sustainability and quality of the BN production chain.
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Affiliation(s)
- Victor J. R. Esperança
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/UNIRIO), Rio de Janeiro, Brazil
| | - Paula I. O. Moreira
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/UNIRIO), Rio de Janeiro, Brazil
| | - Davy W. H. Chávez
- Post Graduate Program in Food Science and Technology, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | - Otniel Freitas-Silva
- Embrapa Food Technology, Office of Research and Development (Sector: Operational Units – Plan V), Rio de Janeiro, Brazil
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Jorbonyan A, Abolfathi Momtaz Y, Foroughan M, Mehrkian S. Determinants of Continuance Intention to Use Hearing Aids among Older Adults in Tehran (Iran). Healthcare (Basel) 2024; 12:487. [PMID: 38391862 PMCID: PMC10888125 DOI: 10.3390/healthcare12040487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/02/2023] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
The present study seeks to evaluate the factors determining the continuance intention to use hearing aids in older adults. This cross-sectional study was carried out in 2021. The technology post-acceptance model (PAM) framework was used to develop a model for the continuance intention to use hearing aids. In total, 300 hearing aid users aged ≥60 years, who were selected via a randomized stratified sampling method, completed the self-evaluation tools used in this study. With a mean age of 71.38 years (SD = 8), the participants comprised 50.7% and 49.3% females and males, respectively. The path analysis results showed that the continuance intention to use hearing aids was positively and significantly influenced by the actual use of hearing aids, the perceived benefits, satisfaction, confirmation, self-efficacy in using hearing aids, an extraverted personality trait, self-perceived hearing handicap, and perceived social support. The main results of the present study can help hearing care providers develop a better understanding of older users to design effective rehabilitation strategies and ensure their continuance intention to use hearing aids.
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Affiliation(s)
- Abdolhakim Jorbonyan
- Department of Geriatric Health, School of Health, Mazandaran University of Medical Sciences, Sari 48157-33971, Iran
| | - Yadollah Abolfathi Momtaz
- Iranian Research Center on Aging, The University of Social Welfare and Rehabilitation Sciences, Tehran 19857-13871, Iran
- Malaysian Research Institute on Ageing, University Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Mahshid Foroughan
- Iranian Research Center on Aging, The University of Social Welfare and Rehabilitation Sciences, Tehran 19857-13871, Iran
| | - Saeideh Mehrkian
- Department of Audiology, The University of Social Welfare and Rehabilitation Sciences, Tehran 19857-13871, Iran
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Choi Y, Go J, Chung JW. Association Between Hearing Level and Mental Health and Quality of Life in Adults Aged >40 Years. J Audiol Otol 2024; 28:52-58. [PMID: 37953515 PMCID: PMC10808385 DOI: 10.7874/jao.2023.00213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND AND OBJECTIVES In this study, we investigated the effects of hearing loss on mental health and quality of life (QoL) using survey data in adults aged >40 years. Subjects and. METHODS We obtained data from 10,921 individuals who responded to the fifth Korean National Health and Nutrition Examination Survey. Primary outcomes were measured using questionnaires that recorded stress perception, depressive mood, and suicidal ideation to evaluate mental health and motor ability, self-management, activities of daily living, pain or discomfort, and anxiety or depression to evaluate QoL. RESULTS On multivariate analysis, suicidal ideation was more prevalent among older adults with hearing loss than in older adults without hearing loss. Motor ability was lower in individuals with hearing loss of >20 dB than in older adults with normal hearing. Categorization of the EuroQol-5 Dimension (EQ-5D) health state into upper and lower groups showed that the EQ-5D values were lower in the moderate-tosevere hearing loss group than in the mild hearing loss group. CONCLUSIONS Among adults aged >40 years, those with hearing loss experienced more suicidal ideation, had lower motor ability, and lower overall QoL compared with these variables in older adults with normal hearing. Additionally, QoL scores were low in individuals with poor hearing.
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Affiliation(s)
- Yeonjoo Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Junyong Go
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jong Woo Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Wang Y, Cui L, Zhao H, He H, Chen L, Song X, Liu D, Qiu J, Sun Y. Exploring the Connectivity of Neurodegenerative Diseases: Microglia as the Center. J Inflamm Res 2023; 16:6107-6121. [PMID: 38107384 PMCID: PMC10725686 DOI: 10.2147/jir.s440377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023] Open
Abstract
Degenerative diseases affect people's life and health and cause a severe social burden. Relevant mechanisms of microglia have been studied, aiming to control and reduce degenerative disease occurrence effectively. This review discussed the specific mechanisms underlying microglia in neurodegenerative diseases, age-related hearing loss, Alzheimer's disease, Parkinson's disease, and peripheral nervous system (PNS) degenerative diseases. It also reviewed the studies of microglia inhibitors (PLX3397/PLX5622) and activators (lipopolysaccharide), and suggested that reducing microglia can effectively curb the genesis and progression of degenerative diseases. Finally, microglial cells' anti-inflammatory and pro-inflammatory dual role was considered the critical communication point in central and peripheral degenerative diseases. Although it is difficult to describe the complex morphological structure of microglia in a unified manner, this does not prevent them from being a target for future treatment of neurodegenerative diseases.
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Affiliation(s)
- Yan Wang
- The Second Medical College, Binzhou Medical University, Yantai, Shandong, People’s Republic of China
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Limei Cui
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - He Zhao
- The Second Medical College, Binzhou Medical University, Yantai, Shandong, People’s Republic of China
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Huhuifen He
- The Second Medical College, Binzhou Medical University, Yantai, Shandong, People’s Republic of China
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Liang Chen
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Xicheng Song
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Dawei Liu
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Jingjing Qiu
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
| | - Yan Sun
- Department of Otolaryngology and Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
- Yantai Key Laboratory of Otorhinolaryngologic Diseases, Yantai, Shandong, People’s Republic of China
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Ger TY, Lien KH, Chi CC. Association of Psoriasis With Hearing Loss: A Systematic Review and Meta-Analysis. J Cutan Med Surg 2023; 27:330-339. [PMID: 37231542 DOI: 10.1177/12034754231177613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND The relation between psoriasis and hearing loss has been unclear. OBJECTIVE To investigate the association of psoriasis with hearing loss. METHODS We searched MEDLINE and Embase on 12th November 2022 for studies on the association between psoriasis and hearing loss. We conducted a random-effects model meta-analysis to calculate pooled mean difference (MD) in the pure tone thresholds, pooled odds ratio for sensorineural hearing loss, and pooled hazard ratio for sudden sensorineural hearing loss related to psoriasis. RESULTS We included 12 case-control/cross-sectional and 3 cohort studies with 202,683 subjects. Psoriasis was associated with hearing loss at 500 Hz (pooled MD 2.21, 95% CI (CI) 0.13 to 4.29), 1000 Hz (pooled MD 2.97, 95% CI 1.01 to 4.93), 2000 Hz (pooled MD 5.13, 95% CI 2.45 to 7.82), 4000 Hz (pooled MD 9.3, 95% CI 5.1 to 13.51), and 6000 Hz (pooled MD 11.04, 95% CI 5.05 to 17.03). Patients with psoriasis had increased odds for sensorineural hearing loss (pooled odds ratio 3.85, 95% CI 1.07-13.9) and risk for sudden sensorineural hearing loss (pooled hazard ratio 1.45; 95% CI 1.22-1.71). CONCLUSION Psoriasis is associated with hearing loss, especially at high frequencies.
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Affiliation(s)
- Tzong-Yun Ger
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
- Graduate Institute of Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Kuang-Hsu Lien
- Department of Otolaryngology - Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ching-Chi Chi
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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Cohen-Vaizer M, Dreyfuss M, Na'ara S, Shinnawi S, Laske R. The Impact of Surgical Expertise on the Cost-Effectiveness of Stapes Surgery. Audiol Neurootol 2023; 28:436-445. [PMID: 37343529 DOI: 10.1159/000530783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 04/18/2023] [Indexed: 06/23/2023] Open
Abstract
INTRODUCTION Otosclerosis is the primary cause of conductive hearing loss with normal otoscopy. As the condition worsens, certain patients may develop a sensorineural component. Patients with successful surgeries may still need hearing aids, which creates a dilemma for health professionals as there are insufficient data to make informed decisions. This study investigated the influence of the surgeon's proficiency level, individual patient factors (e.g., age at the time of intervention and survival rates), and surgery costs on the cost-effectiveness of stapes surgery. METHODS We performed a cost-effectiveness analysis using an adapted Markov model incorporating annual all-cause mortalities. In addition, we introduced sensitivity analyses to address the effects of surgical expertise on adults with bilateral conductive hearing loss due to otosclerosis. A model was developed based on a decision tree with treatment options and complication scenarios for otosclerosis patients undergoing stapes surgery or receiving hearing aids. Annual all-cause mortality was considered. A sensitivity analysis was performed assigned to different training levels ("experts" and "less experienced") to simulate the effects of surgical experience on the cost-effectiveness of surgical outcomes. Successful surgery was defined as closing of the air-bone gap to 10 dB or less. Based on published data, "experts" were simulated with a 93.7% success rate, and "less experienced" were manufactured with a 68.9% success rate. RESULTS Stapes surgery provides improved quality of life (QoL) compared to hearing aids with lower cumulative costs up to 87 years of age in the case of "expert" surgeons and up to 78 years of age, when performed by "less experienced" surgeons. CONCLUSIONS Primary stapes surgery is highly cost-effective and delivers improved QoL compared to hearing aids with lower cumulative costs. Additionally, undergoing stapes surgical training remains highly cost-effective.
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Affiliation(s)
- Mauricio Cohen-Vaizer
- Department of Otolaryngology Head and Neck Surgery, Rambam Healthcare Campus, The Technion, Israel Institute of Technology, Haifa, Israel
| | - Michael Dreyfuss
- Department of Industrial Engineering and Management, Jerusalem College of Technology, Jerusalem, Israel
| | - Shoorok Na'ara
- Department of Otolaryngology Head and Neck Surgery, Rambam Healthcare Campus, The Technion, Israel Institute of Technology, Haifa, Israel
- Department of Otolaryngology, Head and Neck Surgery, University of California at San Francisco, San Francisco, California, USA
| | - Shadi Shinnawi
- Department of Otolaryngology Head and Neck Surgery, Rambam Healthcare Campus, The Technion, Israel Institute of Technology, Haifa, Israel
| | - Roman Laske
- Department of Otolaryngology, HNO Wiedikon, Zurich, Switzerland
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Li N, Yan X, Huang W, Chu M, Dong Y, Song H, Peng Y, Shi J, Liu Q. Curcumin protects against the age-related hearing loss by attenuating apoptosis and senescence via activating Nrf2 signaling in cochlear hair cells. Biochem Pharmacol 2023; 212:115575. [PMID: 37334787 DOI: 10.1016/j.bcp.2023.115575] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/08/2023] [Accepted: 04/24/2023] [Indexed: 06/21/2023]
Abstract
Age-related hearing loss (ARHL) is a most widespread neurodegenerative disease affecting the elderly population, but effective pharmacological treatments remain limited. Curcumin is a bioactive compound of Curcuma longa with antioxidant properties. Herein, we looked into the effects of curcumin on the H2O2-induced oxidative stress in cochlear hair cells and hearing function in an ARHL animal model (C57BL/6J mice). We found that pretreatment of curcumin could attenuate H2O2-induced apoptosis and cell senescence in auditory hair cells and prevent mitochondrial function dysfunction. More specifically, Western blot and luciferase activity assay showed that curcumin activated the nuclear translocation of Nrf2, which in turn triggered the activation of its downstream target gene Heme Oxygenase1 (HO-1). The enhanced Nrf2 and HO-1 activity by curcumin was blocked by the AKT inhibitor LY294002, indicating the protective effect of curcumin was mainly achieved by activating Nrf2/HO-1 through the AKT pathway. Furthermore, the knockdown of Nrf2 with siRNA diminished the protective effects of Nrf2 against apoptosis and senescence, consolidating the pivotal role of Nrf2 in the protective effect of curcumin on auditory hair cells. More importantly, curcumin (10 mg/kg/d) could attenuate progressive hearing loss in C57BL/6J mice, as evident from the reduced threshold of auditory nerve brainstem response. Administration of curcumin also elevated the expression of Nrf2 and reduced the expression of cleaved-caspase-3, p21, and γ-H2AX in cochlear. This study is the first to demonstrate that curcumin can prevent oxidative stress-induced auditory hair cell degeneration through Nrf2 activation, highlighting its potential therapeutic value in preventing ARHL.
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Affiliation(s)
- Ning Li
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xirui Yan
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weiling Huang
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Min Chu
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yang Dong
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Haiyan Song
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yinting Peng
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianrong Shi
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qing Liu
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Bako P, Lippai B, Nagy J, Kramer S, Kaszas B, Tornoczki T, Bock-Marquette I. Thymosin beta-4 - A potential tool in healing middle ear lesions in adult mammals. Int Immunopharmacol 2023; 116:109830. [PMID: 38706788 PMCID: PMC11068331 DOI: 10.1016/j.intimp.2023.109830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Acute tympanic membrane perforations primarily occur due to injury or infection in humans. In acute cases, nearly 80-94 % of the perforations heal spontaneously. In chronic cases, non-surgical treatment becomes significantly limited, and the perforation can be restored only by myringoplasty. In addition to classical grafts such as the fascia or cartilage, promising results have been reported with various biological materials including silk or acellular collagen. However, despite of all the efforts, healing remains insufficient. Consequentially, a need for substances which actively promote tympanic cell migration and proliferation is deemed essential. In our study, we utilized Thymosin beta-4 (TB4), a 43aa peptide possessing many regenerative properties in various organ systems. Our aim was to reveal the impact of externally administered TB4 regarding impairments of the middle ear, particularly the tympanic membrane. We harvested tympanic membranes from adult mice and treated these with TB4 or PBS on both collagen gel matrixes and in the form of floating, ex vivo explants. Cell migration and proliferation was measured, while immunocytochemical analyses were performed to determine cell type and the nature of the targeted molecules. We discovered the peptide affects the behavior of epidermal and epithelial cells of the tympanic membrane in vitro. Moreover, as our initial results imply, it is not the differentiated, yet most likely the local epidermal progenitor cells which are the primary targets of the molecule. Our present results unveil a new, thus far undiscovered field regarding clinical utilization for TB4 in the future.
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Affiliation(s)
- Peter Bako
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Pecs, Medical School, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - Balint Lippai
- Department of Biochemistry and Medical Chemistry University of Pecs, Medical School, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - Jazmin Nagy
- Szentagothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - Sofie Kramer
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Pecs, Medical School, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - Balint Kaszas
- Department of Pathology, University of Pecs, Medical School, H-7624 Pecs, Hungary
| | - Tamas Tornoczki
- Department of Pathology, University of Pecs, Medical School, H-7624 Pecs, Hungary
| | - Ildiko Bock-Marquette
- Department of Biochemistry and Medical Chemistry University of Pecs, Medical School, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
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11
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Teplitxky A, Gautier J, Lievre M, Duval G, Annweiler C, Boucher S. Association between age-related hearing loss and gait disorders in older fallers. Aging Clin Exp Res 2023; 35:785-791. [PMID: 36786968 DOI: 10.1007/s40520-023-02350-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 01/12/2023] [Indexed: 02/15/2023]
Abstract
INTRODUCTION Falls are associated with hearing loss, which might be explained by the onset of gait disorders. The objective of this study was to examine the association between Age-Related Hearing Loss (ARHL) and gait disorders assessed with GAITrite® walkway in a population of fallers aged 75 and over while accounting for the vestibular function. METHODS We examined data from 53 older patients (mean 84.2 ± 5.1 years; 64% women) included after a GAITrite® walkway assessment together with hearing and vestibular tests. People with high-frequency hearing loss, higher than 10% of the age and sex-matched population with the worst hearing, composed untimely ARHL group (n = 30), whereas all others had expected ARHL (n = 23). Presbyvestibulopathy was assessed accordingly to Barany Society criteria. RESULTS After adjustment for age, sex, body mass index, Mini-Mental State Examination score and presbyvestibulopathy, we found an increase in stride length mean in the untimely ARHL group (p = 0.046), but no between-group differences in stride length variability, cadence or velocity. Untimely ARHL was not associated with presbyvestibulopathy. CONCLUSIONS Untimely ARHL in older fallers was not associated with gait disorders in the studied population.
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Affiliation(s)
- Antoine Teplitxky
- Department of ENT and Head and Neck Surgery, CHU of Angers, 49933, Angers, Cedex 9, France
| | - Jennifer Gautier
- Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, Angers, France
| | - Marion Lievre
- Department of General Medicine, University Hospital of Angers, 49933, Angers, Cedex 9, France
| | - Guillaume Duval
- Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, Angers, France.,UNIV ANGERS, UPRES EA 4638, University of Angers, Angers, France
| | - Cédric Annweiler
- Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, Angers, France.,UNIV ANGERS, UPRES EA 4638, University of Angers, Angers, France.,UNIV ANGERS, School of MedicineHealth Faculty, University of Angers, Angers, France.,Gérontopôle Autonomie Longévité des Pays de la Loire, Nantes, France.,Department of Medical Biophysics, Schulich School of Medicine and Dentistry, Robarts Research Institute, The University of Western Ontario, London, ON, Canada
| | - Sophie Boucher
- Department of ENT and Head and Neck Surgery, CHU of Angers, 49933, Angers, Cedex 9, France. .,Mitolab Team, UNIV Angers, Mitovasc Institute, CNRS UMR6015, INSERM U1083, Angers, France.
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12
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Li L, Xu K, Bai X, Wang Z, Tian X, Chen X. UCHL1 regulated by Sp1 ameliorates cochlear hair cell senescence and oxidative damage. Exp Ther Med 2023; 25:94. [PMID: 36761006 PMCID: PMC9905655 DOI: 10.3892/etm.2023.11793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/09/2022] [Indexed: 01/11/2023] Open
Abstract
Age-related hearing loss (ARHL) is the most common cause of hearing loss in the elderly. Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is a deubiquitinating enzyme involved in several types of human disease. The present study aimed to investigate the effect of UCHL1 on a hydrogen peroxide (H2O2)-induced ARHL model in cochlear hair cells and uncover its underlying mechanism. Reverse transcription-quantitative (RT-q)PCR and western blot analysis were used to assess UCHL1 expression in HEI-OC1 cells exposed to H2O2. Following UCHL1 overexpression in H2O2-induced HEI-OC1 cells, cell activity was assessed by Cell Counting Kit-8 assay. The content of oxidative stress-associated markers including superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and reactive oxygen species (ROS ) was measured using corresponding commercial kits. Cell apoptosis was evaluated by TUNEL assay and western blot analysis. Cell senescence was assessed by senescence-associated β-galactosidase staining and western blot analysis. RT-qPCR and western blot analysis were applied to measure mRNA and protein expression levels, respectively, of specificity protein 1 (Sp1) in H2O2-treated HEI-OC1 cells. In addition, the association between UCHL1 and Sp1 was verified by luciferase reporter and chromatin immunoprecipitation (ChIP) assay. The mRNA and protein expression levels of UCHL1 were also determined in Sp1-overexpressing cells by RT-qPCR and western blot analysis, respectively. Following Sp1 overexpression in UCHL1-overexpressing H2O2-treated HEI-OC1 cells, cell activity, oxidative stress, apoptosis and senescence were assessed. Finally, the expression levels of NF-κB signaling-related proteins p-NF-κB p65 and NF-κB p65 were detected using western blot analysis. The results showed that UCHL1 was downregulated in H2O2-treated HEI-OC1 cells. In addition, UCHL1 overexpression enhanced cell viability and promoted oxidative damage, apoptosis and senescence in H2O2-induced HEI-OC1 cells. Furthermore, Sp1 was upregulated in H2O2-treated HEI-OC1 cells. Additionally, luciferase reporter and ChIP assays demonstrated that Sp1 interacted with the UCHL1 promoter to inhibit UCHL1 transcription. Sp1 overexpression reversed the effect of UCHL1 overexpression on cell viability, oxidative stress, apoptosis, senescence and activation of the NF-κB signaling pathway in H2O2-exposed HEI-OC1 cells. Collectively, the results suggested that UCHL1 transcriptional suppression by Sp1 protected cochlear hair cells from H2O2-triggered senescence and oxidative damage.
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Affiliation(s)
- Lihua Li
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Kai Xu
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xue Bai
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhi Wang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xiaoyan Tian
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xubo Chen
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China,Correspondence to: Dr Xubo Chen, Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, 1 Minde Road, Nanchang, Jiangxi 330006, P.R. China
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Alves CS, Santos M, Castro A, Lino J, Freitas SV, Almeida e Sousa C, da Silva ÁM. Geriatric otorhinolaryngology: reasons for outpatient referrals from generalists to ENT specialists. Eur Arch Otorhinolaryngol 2023; 280:461-467. [PMID: 36094563 PMCID: PMC9466320 DOI: 10.1007/s00405-022-07641-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 11/25/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE To determine the main symptoms leading to referral of geriatric patients from primary care to otorhinolaryngology. METHODS Retrospective, observational study performed on patients aged 65 and older, referred from Primary Care to the Otorhinolaryngology and Head and Neck Surgery department of a tertiary centre during 2019 and 2020. Symptoms leading to otorhinolaryngological referral were categorized as "Oto-neurological symptoms", "Nasal symptoms", "Pharyngolaryngeal symptoms", "Other Head and Neck symptoms" and "Other Reasons". Data regarding age, gender and whether patients maintain follow-up or have been discharged was also collected. RESULTS The study population included a total of 1304 patients (697 female; 607 male). Oto-neurological symptoms were found to be the most prevalent symptoms, with 65% of patients reporting oto-neurological symptoms as at least one of the reasons for referral. Hearing loss was the most commonly reported symptom, with an association found between this symptom and age (p < 0.001). Results also showed an association between the female gender and vertigo/dizziness (p < 0.001) and tinnitus (p = 0.007). An association between the male gender and nasal symptoms was also found (p = 0.018), particularly nasal obstruction (p = 0.003) and epistaxis (p = 0.028). No statistically significant associations were found among the pharyngolaryngeal group. CONCLUSIONS This retrospective observational study allowed for a better understanding of the type of otorhinolaryngological symptoms affecting elderly patients and driving otorhinolaryngology evaluation, cementing hearing loss as one of the major complaints among older adults and allowing for a better preparation by otorhinolaryngologists for the changing needs of this subset of the population.
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Affiliation(s)
- Clara Serdoura Alves
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
| | - Mariline Santos
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
| | - Afonso Castro
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
| | - João Lino
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
| | - Susana Vaz Freitas
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal ,Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Porto, Portugal ,LIAAD, Laboratório de Inteligência Artificial e Apoio à Decisão, INESCTEC, Porto, Portugal
| | - Cecília Almeida e Sousa
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
| | - Álvaro Moreira da Silva
- Centro Hospitalar Universitário do Porto, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar, 4100-099 Porto, Portugal
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Yang YF, Yan XR, Wu RX, Li N, Chu M, Dong Y, Fu SP, Shi JR, Liu Q. Network pharmacology and experimental evidence reveal the protective mechanism of Yi-Qi Cong-Ming decoction on age-related hearing loss. PHARMACEUTICAL BIOLOGY 2022; 60:1478-1490. [PMID: 35938504 PMCID: PMC9359200 DOI: 10.1080/13880209.2022.2101671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/07/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
CONTEXT Yi-Qi Cong-Ming (YQCM) decoction has been widely used to prevent age-related hearing loss (ARHL), the most prevalent neurodegenerative disease in the elderly. OBJECTIVE To explore the mechanism of YQCM decoction in the treatment of ARHL. MATERIALS AND METHODS The chemical constituents of YQCM were screened from the Traditional Chinese Medicine Systems Pharmacology Database. Potential targets of YQCM against ARHL were predicted by DrugBank, GeneCards, and OMIM database. Protein-protein network and enrichment analysis were used for exploring possible molecular mechanisms. Molecular docking and an in vitro model of ARHL by exposing auditory cells with 100 μM H2O2 for 3 h were applied. Cell viability and mitochondrial membrane potential (ΔΨM) were detected by CCK-8 and high-content analysis. γH2AX and cleaved caspase-3 were detected by Western blot. RESULTS The main compounds have good affinities with hub targets, especially AKT1, PTGS2, and CASP3. GO and KEGG analysis showed that the main biological process and key targets were related to negative regulation of the apoptotic process. H2O2 treatment could reduce the cell viability by 68% and impaired ΔΨM, while 90 μg/mL YQCM pre-treatment could restore the cell viability by 97.45% and increase ΔΨM (2-fold higher). YQCM pre-treatment also reduced γH2AX and cleaved caspase-3 protein levels. CONCLUSIONS Our study suggested that YQCM prevents ARHL by modulating the apoptosis process in auditory hair cells. Moreover, this study proved that bioinformatics analysis combined with molecular docking and cell model is a promising method to explore other possible pharmacological interventions of ARHL.
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Affiliation(s)
- Yi-Fang Yang
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xi-Rui Yan
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Rui-Xin Wu
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ning Li
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Min Chu
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yang Dong
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shu-Ping Fu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jian-Rong Shi
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qing Liu
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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15
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Hou S, Chen P, He J, Chen J, Zhang J, Mammano F, Yang J. Dietary intake of deuterium oxide decreases cochlear metabolism and oxidative stress levels in a mouse model of age-related hearing loss. Redox Biol 2022; 57:102472. [PMID: 36162258 PMCID: PMC9513171 DOI: 10.1016/j.redox.2022.102472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/15/2022] Open
Abstract
Age-related hearing loss (ARHL) is the most prevalent sensory disorder in the elderly. Currently, no treatment can effectively prevent or reverse ARHL. Aging auditory organs are often accompanied by exacerbated oxidative stress and metabolic deterioration. Here, we report the effect of deuterated oxygen (D2O), also known as "heavy water", mouse models of ARHL. Supplementing the normal mouse diet with 10% D2O from 4 to 9 weeks of age lowered hearing thresholds at selected frequencies in treated mice compared to untreated control group. Oxidative stress levels were significantly reduced and in the cochlear duct of treated vs. untreated mice. Through metabolic flux analysis, we found that D2O mainly slowed down catabolic reactions, and may delay metabolic deterioration related to aging to a certain extent. Experiments confirmed that the Nrf2/HO-1/glutathione axis was down-regulated in treated mice. Thus, D2O supplementation can hinder ARHL progression in mouse models by slowing the pace of metabolism and reducing endogenous oxidative stress production in the cochlea. These findings open new avenues for protecting the cochlea from oxidative stress and regulating metabolism to prevent ARHL.
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Affiliation(s)
- Shule Hou
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Penghui Chen
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
| | - Jingchun He
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Junmin Chen
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Jifang Zhang
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Fabio Mammano
- Department of Physics and Astronomy "G. Galilei", University of Padua, Padova, Italy; Department of Biomedical Sciences, Institute of Cell Biology and Neurobiology, Italian National Research Council, Monterotondo, Italy.
| | - Jun Yang
- Department of Otorhinolaryngology-Head & Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
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Yoon YS, Morgan D. Dichotic spectral integration range for consonant recognition in listeners with normal hearing. Front Psychol 2022; 13:1009463. [PMID: 36337493 PMCID: PMC9633255 DOI: 10.3389/fpsyg.2022.1009463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/05/2022] [Indexed: 01/16/2023] Open
Abstract
Dichotic spectral integration range, or DSIR, was measured for consonant recognition with normal-hearing listeners. DSIR is defined as a frequency range needed from 0 to 8,000 Hz band in one ear for consonant recognition when low-frequency information of the same consonant was presented to the opposite ear. DSIR was measured under the three signal processing conditions: (1) unprocessed, (2) target: intensified target spectro-temporal regions by 6 dB responsible for consonant recognition, and (3) target minus conflicting: intensified target regions minus spectro-temporal regions that increase confusion. Each consonant was low-pass filtered with a cutoff frequency of 250, 500, 750, and 1,000 Hz, and then was presented in the left ear or low-frequency (LF) ear. To create dichotic listening, the same consonant was simultaneously presented to the right ear or high-frequency (HF) ear. This was high-pass filtered with an initial cutoff frequency of 7,000 Hz, which was adjusted using an adaptive procedure to find the maximum high-pass cutoff for 99.99% correct consonant recognition. Mean DSIRs spanned from 3,198-8,000 Hz to 4,668-8,000 Hz (i.e., mid-to-high frequencies were unnecessary), depending on low-frequency information in the LF ear. DSIRs narrowed (i.e., required less frequency information) with increasing low-frequency information in the LF ear. However, the mean DSIRs were not significantly affected by the signal processing except at the low-pass cutoff frequency of 250 Hz. The individual consonant analyses revealed that /ta/, /da/, /sa/, and /za/ required the smallest DSIR, while /ka/, /ga/, /fa/, and /va/ required the largest DSIRs. DSIRs also narrowed with increasing low-frequency information for the two signal processing conditions except for 250 vs. 1,000 Hz under the target-conflicting condition. The results suggest that consonant recognition is possible with large amounts of spectral information missing if complementary spectral information is integrated across ears. DSIR is consonant-specific and relatively consistent, regardless of signal processing. The results will help determine the minimum spectral range needed in one ear for consonant recognition if limited low spectral information is available in the opposite ear.
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Morros-González E, Morsch P, Hommes C, Vega E, Cano-Gutiérrez C. Retomando los sonidos: Prevención de la hipoacusia y rehabilitación auditiva en las personas mayores. Rev Panam Salud Publica 2022; 46:e86. [PMID: 35855443 PMCID: PMC9288222 DOI: 10.26633/rpsp.2022.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/25/2022] [Indexed: 11/24/2022] Open
Abstract
La hipoacusia representa una de las principales causas de discapacidad a nivel mundial y su prevalencia aumenta a medida que se envejece. Representa un tipo de discapacidad que, en la mayoría de los casos, puede ser potencialmente prevenible y tratable, por lo que su prevención, identificación temprana y rehabilitación integral deberían ser algunos de los puntos de acción a nivel local ya que se ha relacionado con numerosos desenlaces adversos en salud, incluyendo los dominios físico, mental, social y económico de las personas mayores. El objetivo de este artículo es resaltar la importancia de la prevención de la hipoacusia y promover su rehabilitación a lo largo del curso de vida, especialmente en personas mayores, y describir estrategias que se han planteado desde la Organización Mundial de la Salud y la Organización Panamericana de la Salud.
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Affiliation(s)
- Elly Morros-González
- Instituto de envejecimiento. Pontificia Universidad Javeriana. Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Patricia Morsch
- Organización Panamericana de la Salud, Washington, DC, Estados Unidos de América
| | - Carolina Hommes
- Organización Panamericana de la Salud, Washington, DC, Estados Unidos de América
| | - Enrique Vega
- Organización Panamericana de la Salud, Washington, DC, Estados Unidos de América
| | - Carlos Cano-Gutiérrez
- Instituto de envejecimiento. Pontificia Universidad Javeriana. Hospital Universitario San Ignacio, Bogotá, Colombia
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Özdemir D, Mehel DM, Çeçen AB, Özdemir Ş, Küçüköner Ö, Özgür A. Evaluation of age-related changes in middle-ear structures by wideband tympanometry. Acta Otolaryngol 2022; 142:505-508. [PMID: 35732016 DOI: 10.1080/00016489.2022.2087235] [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: 11/01/2022]
Abstract
BACKGROUND Presbycusis is bilateral sensorineural hearing loss associated with the progressive degeneration of cochlear and central auditory pathways with aging. AIMS/OBJECTIVES We aimed to reveal age-related changes in middle ear function by using wideband tympanometry (WBT). MATERIALS AND METHODS Fifty-eight patients diagnosed with presbycusis were compared to 52 audiologically healthy participants. WBT measurement was performed on both ears via wideband click stimulus with a tympanometer device using probe tone frequencies of 226-8000 Hz. RESULTS There were no statistically significant differences detected among the resonance frequencies or maximum absorbance ratios measured in both ears between groups (p > .05). The mean absorbance of the right and left ears at 4000 and 8000 Hz was statistically higher in the patient group than in the healthy controls (r = 0.038, 0.030; l = 0.015, 0.012). Moreover, mean compliance values were found to be significantly lower in the patient group than in the control group (r = 0.030 and l = 0.040). CONCLUSION The significant differences detected in compliance and absorbance values for high frequencies in presbycusis patients were remarkable. Thus, it has been shown that WBT yields an advantage compared to traditional tympanometry in the diagnosis and treatment of middle ear diseases.
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Affiliation(s)
- Doğukan Özdemir
- Department of Otolaryngology, Samsun University School of Medicine, Samsun, Turkey
| | - Dursun Mehmet Mehel
- Department of Otorhinolaryngology, University of Health Sciences Samsun Training and Research Hospital, Samsun, Turkey
| | - Ayşe Bel Çeçen
- Department of Otolaryngology, Samsun University School of Medicine, Samsun, Turkey
| | - Şule Özdemir
- Department of Public Health, Samsun University School of Medicine, Samsun, Turkey
| | - Ömer Küçüköner
- Department of Otorhinolaryngology, Ondokuzmayıs University School of Medicine, Samsun, Turkey
| | - Abdulkadir Özgür
- Department of Otorhinolaryngology, University of Yeni Yüzyıl, Gaziosmanpaşa Hospital, İstanbul, Turkey
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Lazareva LA, Elizbaryan IS, Azamatova SA, Muzaeva BR, Sushcheva NA. [Triggers and predictors of development and formation of sensorineural hearing loss]. Vestn Otorinolaringol 2022; 87:34-43. [PMID: 35605270 DOI: 10.17116/otorino20228702134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The purpose of the study is to review the results of scientific researches in recent years in an expanded interdisciplinary view of the problem of etiopathogenesis of sensorineural hearing loss, as well as the role of comorbidities and triggers in the formation of persistent changes in the audio-receiving part of the auditory analyzer.
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Affiliation(s)
- L A Lazareva
- Kuban State Medical University, Krasnodar, Russia
| | | | - S A Azamatova
- Adygei Republican Center for Rehabilitation of the Adygea Republican Clinical Hospital, Republic of Adygea, Russia
| | - B R Muzaeva
- Kuban State Medical University, Krasnodar, Russia
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Liu Q, Li N, Yang Y, Yan X, Dong Y, Peng Y, Shi J. Prediction of the Molecular Mechanisms Underlying Erlong Zuoci Treatment of Age-Related Hearing Loss via Network Pharmacology-Based Analyses Combined with Experimental Validation. Front Pharmacol 2021; 12:719267. [PMID: 34887749 PMCID: PMC8650627 DOI: 10.3389/fphar.2021.719267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 10/06/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The traditional Chinese medicine formula ErLong ZuoCi (ELZC) has been extensively used to treat age-related hearing loss (ARHL) in clinical practice in China for centuries. However, the underlying molecular mechanisms are still poorly understood. Objective: Combine network pharmacology with experimental validation to explore the potential molecular mechanisms underlying ELZC with a systematic viewpoint. Methods: The chemical components of ELZC were collected from the Traditional Chinese Medicine System Pharmacology database, and their possible target proteins were predicted using the SwissTargetPrediction database. The putative ARHL-related target proteins were identified from the database: GeneCards and OMIM. We constructed the drug-target network as well as drug-disease specific protein-protein interaction networks and performed clustering and topological property analyses. Functional annotation and signaling pathways were performed by gene ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis. Finally, in vitro experiments were also performed to validate ELZC’s key target proteins and treatment effects on ARHL. Results: In total, 63 chemical compounds from ELZC and 365 putative ARHL-related targets were identified, and 1860 ARHL-related targets were collected from the OMIM and GeneCards. A total of 145 shared targets of ELZC and ARHL were acquired by Venn diagram analysis. Functional enrichment analysis suggested that ELZC might exert its pharmacological effects in multiple biological processes, such as cell proliferation, apoptosis, inflammatory response, and synaptic connections, and the potential targets might be associated with AKT, ERK, and STAT3, as well as other proteins. In vitro experiments revealed that ELZC pretreatment could decrease senescence-associated β-galactosidase activity in hydrogen peroxide-induced auditory hair cells, eliminate DNA damage, and reduce cellular senescence protein p21 and p53. Finally, Western blot analysis confirmed that ELZC could upregulate the predicted target ERK phosphorylation. Conclusion: We provide an integrative network pharmacology approach, in combination with in vitro experiments to explore the underlying molecular mechanisms governing ELZC treatment of ARHL. The protective effects of ELZC against ARHL were predicted to be associated with cellular senescence, inflammatory response, and synaptic connections which might be linked to various pathways such as JNK/STAT3 and ERK cascade signaling pathways. As a prosperous possibility, our experimental data suggest phosphorylation ERK is essential for ELZC to prevent degeneration of cochlear.
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Affiliation(s)
- Qing Liu
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ning Li
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yifang Yang
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xirui Yan
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yang Dong
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yinting Peng
- Experimental Teaching Center, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianrong Shi
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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21
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Sharma RK, Chern A, Begasse de Dhaem O, Golub JS, Lalwani AK. Chronic Obstructive Pulmonary Disease is a Risk Factor for Sensorineural Hearing Loss: A US Population Study. Otol Neurotol 2021; 42:1467-1475. [PMID: 34387615 DOI: 10.1097/mao.0000000000003317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The goal of this study is to determine if chronic obstructive pulmonary disease (COPD) is associated with sensorineural hearing loss (SNHL) in a national database. STUDY DESIGN Cross-sectional study. SETTING National sample of the United States population. PATIENTS Adults with audiometric and spirometry data from the National Health and Nutrition Examination Study (NHANES) database. INTERVENTIONS None. METHODS A total of 2,464 adults with spirometry and audiometry data from the NHANES database (2009-2012) were studied. Outcome measures included hearing, measured by high-frequency pure tone average (HFPTA; 3, 4, 6, 8 kHz) and low-frequency pure tone average (LFPTA; .5, 1, 2 kHz) frequencies. SNHL was defined as a HFPTA or LFPTA threshold more than 25 decibels (dB) in the better ear. Multivariable regression analyses explored the association between hearing loss and COPD. RESULTS The prevalence of COPD was 19.8% in individuals with SNHL in the better ear and 4.7% in individuals with normal hearing (p < 0.001). Presence of COPD was associated with elevated hearing thresholds (worse hearing) at each individual frequency. The presence of COPD was independently associated with a 3.29 dB (95% CI: 1.48, 5.09) increase in HFPTA (p < 0.001), and 2.32 dB (1.13, 3.50) increase in LFPTA (p < 0.001) after controlling for medical, social, and environmental covariates. The presence of COPD was independently associated with a 1.85-fold (1.12, 3.06) increased odds of isolated low-frequency SNHL (p = 0.017). CONCLUSIONS COPD was independently associated with sensorineural hearing loss after controlling for multiple confounding factors. These results contribute to the evidence that COPD and pulmonary dysfunction can be comorbid with hearing decline.
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Affiliation(s)
- Rahul K Sharma
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center
| | - Alexander Chern
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center
| | - Olivia Begasse de Dhaem
- Graham Headache Center at the Brigham and Women's Faulkner Hospital and Department of Neurology at the Mass General Hospital, Harvard University, Boston, Massachusetts
| | - Justin S Golub
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center
| | - Anil K Lalwani
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center
- Department of Mechanical Engineering, The Fu Foundation School of Engineering and Applied Science, Columbia University, New York, New York
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22
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Diaz MT, Yalcinbas E. The neural bases of multimodal sensory integration in older adults. INTERNATIONAL JOURNAL OF BEHAVIORAL DEVELOPMENT 2021; 45:409-417. [PMID: 34650316 DOI: 10.1177/0165025420979362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although hearing often declines with age, prior research has shown that older adults may benefit from multisensory input to a greater extent when compared to younger adults, a concept known as inverse effectiveness. While there is behavioral evidence in support of this phenomenon, less is known about its neural basis. The present fMRI study examined how older and younger adults processed multimodal auditory-visual (AV) phonemic stimuli which were either congruent or incongruent across modalities. Incongruent AV pairs were designed to elicit the McGurk effect. Behaviorally, reaction times were significantly faster during congruent trials compared to incongruent trials for both age groups, and overall older adults responded more slowly. The interaction was not significant suggesting that older adults processed the AV stimuli similarly to younger adults. Although there were minimal behavioral differences, age-related differences in functional activation were identified: Younger adults elicited greater activation than older adults in primary sensory regions including superior temporal gyrus, the calcarine fissure, and left post-central gyrus. In contrast, older adults elicited greater activation than younger adults in dorsal frontal regions including middle and superior frontal gyri, as well as dorsal parietal regions. These data suggest that while there is age-related stability in behavioral sensitivity to multimodal stimuli, the neural bases for this effect differed between older and younger adults. Our results demonstrated that older adults underrecruited primary sensory cortices and had increased recruitment of regions involved in executive function, attention, and monitoring processes, which may reflect an attempt to compensate.
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Affiliation(s)
- Michele T Diaz
- Department of Psychology, The Pennsylvania State University
| | - Ege Yalcinbas
- Neurosciences Department, University of California, San Diego
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23
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Dreyfuss M, Giat Y, Veraguth D, Röösli C, Huber AM, Laske RD. Cost Effectiveness of Cochlear Implantation in Single-Sided Deafness. Otol Neurotol 2021; 42:1129-1135. [PMID: 34191788 DOI: 10.1097/mao.0000000000003135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To analyze the cost effectiveness of cochlear implantation (CI) for the treatment of single-sided deafness (SSD). STUDY DESIGN Cost-utility analysis in an adapted Markov model. SETTING Adults with single-sided deafness in a high-income country. INTERVENTION Unilateral CI was compared with no intervention. MAIN OUTCOME MEASURE Incremental cost-effectiveness ratios were compared with different cost-effectiveness thresholds ($10,000 to $150,000) for different age, sex, and cost combinations. The calculations were based on the quality-adjusted life year (QALY), national life expectancy tables, and different cost settings. The health utility values for the QALY were either directly collected from published data, or, derived from published data using a regression model of multiple utility indices (regression estimate). RESULTS The regression estimate showed an increase of the health utility value from 0.62 to 0.74 for SSD patients who underwent CI. CI for SSD was cost effective for women up to 64 years ($50,000 per-QALY threshold), 80 years ($100,000 per-QALY threshold), and 86 years ($150,000 per-QALY threshold). For men, these values were 58, 77, and 84, respectively. Changing the discount rate by up to 5% further increased the cutoff ages up to 5 years. A detailed cost and age sensitivity analysis is presented and allows testing for cost effectiveness in local settings worldwide. CONCLUSIONS CI is a cost-effective option to treat patients with SSD.
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Affiliation(s)
- Michael Dreyfuss
- Department of Industrial Engineering and Management, Jerusalem College of Technology, Jerusalem, Israel
| | - Yahel Giat
- Department of Industrial Engineering and Management, Jerusalem College of Technology, Jerusalem, Israel
| | - Dorothe Veraguth
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich
- University of Zurich
| | - Christof Röösli
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich
- University of Zurich
| | - Alexander M Huber
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich
- University of Zurich
| | - Roman D Laske
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich
- University of Zurich
- HNO Wiedikon, Zurich, Switzerland
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Sloane PD, Whitson H, Williams SW. Addressing Hearing and Vision Impairment in Long-Term Care: An Important and Often-Neglected Care Priority. J Am Med Dir Assoc 2021; 22:1151-1155. [PMID: 34088504 DOI: 10.1016/j.jamda.2021.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 01/01/2023]
Affiliation(s)
- Philip D Sloane
- Cecil G. Sheps Center for Health Services Research and Departments of Family Medicine and Internal Medicine, School of Medicine, University of North Carolina, Chapel Hill, NC, USA.
| | - Heather Whitson
- Departments of Medicine and Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Sharon Wallace Williams
- Division of Speech and Hearing Sciences, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, USA
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25
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Sun Z, Cheng Z, Gong N, Xu Z, Jin C, Wu H, Tao Y. Neural presbycusis at ultra-high frequency in aged common marmosets and rhesus monkeys. Aging (Albany NY) 2021; 13:12587-12606. [PMID: 33909598 PMCID: PMC8148503 DOI: 10.18632/aging.202936] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
The aging of the population and environmental noise have contributed to high rates of presbycusis, also known as age-related hearing loss (ARHL). Because mice have a relatively short life span, murine models have not been suitable for determining the mechanism of presbycusis development and methods of diagnosis. Although the common marmoset, a non-human primate (NHP), is an ideal animal model for studying age-related diseases, its auditory spectrum has not been systematically studied. Auditory brainstem responses (ABRs) from 38 marmosets of different ages demonstrated that auditory function correlated with age. Hearing loss in geriatric common marmosets started at ultra-high frequency (>16 kHz), then extended to lower frequencies. Despite age-related deterioration of ABR threshold and amplitude in marmosets, outer hair cell (OHC) function remained stable at all ages. Spiral ganglion neurons (SGNs), which are the first auditory neurons in the auditory system, were found to degenerate distinctly in aged common marmosets, indicating that neural degeneration caused presbycusis in these animals. Similarly, age-associated ABR deterioration without loss of OHC function was observed in another NHP, rhesus monkeys. Audiometry results from these two species of NHP suggested that NHPs were ideal for studying ARHL and that neural presbycusis at high frequency may be prevalent in primates.
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Affiliation(s)
- Zhuoer Sun
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, Shanghai 200011, P.R. China
| | - Zhenzhe Cheng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, Shanghai 200011, P.R. China
| | - Neng Gong
- Institute of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Zhen Xu
- Institute of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Chenxi Jin
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, Shanghai 200011, P.R. China
| | - Hao Wu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, Shanghai 200011, P.R. China
| | - Yong Tao
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
- Shanghai Key Laboratory of Translation Medicine on Ear and Nose Disease, Shanghai 200011, P.R. China
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26
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Kim BJ, Jeon HW, Jeon W, Han JH, Oh J, Yi N, Kim MY, Kim M, Kim JN, Kim BH, Hyon JY, Kim D, Koo JW, Oh DY, Choi BY. Rising of LOXHD1 as a signature causative gene of down-sloping hearing loss in people in their teens and 20s. J Med Genet 2021; 59:470-480. [PMID: 33753533 DOI: 10.1136/jmedgenet-2020-107594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/21/2021] [Accepted: 02/23/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Down-sloping sensorineural hearing loss (SNHL) in people in their teens and 20s hampers efficient learning and communication and in-depth social interactions. Nonetheless, its aetiology remains largely unclear, with the exception of some potential causative genes, none of which stands out especially in people in their teens and 20s. Here, we examined the role and genotype-phenotype correlation of lipoxygenase homology domain 1 (LOXHD1) in down-sloping SNHL through a cohort study. METHODS Based on the Seoul National University Bundang Hospital (SNUBH) genetic deafness cohort, in which the patients show varying degrees of deafness and different onset ages (n=1055), we have established the 'SNUBH Teenager-Young Adult Down-sloping SNHL' cohort (10-35 years old) (n=47), all of whom underwent exome sequencing. Three-dimensional molecular modelling, minigene splicing assay and short tandem repeat marker genotyping were performed, and medical records were reviewed. RESULTS LOXHD1 accounted for 33.3% of all genetically diagnosed cases of down-sloping SNHL (n=18) and 12.8% of cases in the whole down-sloping SNHL cohort (n=47) of young adults. We identified a potential common founder allele, as well as an interesting genotype-phenotype correlation. We also showed that transcript 6 is necessary and probably sufficient for normal hearing. CONCLUSIONS LOXHD1 exceeds other genes in its contribution to down-sloping SNHL in young adults, rising as a signature causative gene, and shows a potential but interesting genotype-phenotype correlation.
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Affiliation(s)
- Bong Jik Kim
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University College of Medicine, Chungnam National University Sejong Hospital, Sejong, South Korea.,Brain Research Institute, Chungnam National University College of Medicine, Daejeon, South Korea
| | - Hyoung Won Jeon
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Woosung Jeon
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Jin Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jayoung Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Nayoung Yi
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University College of Medicine, Chungnam National University Sejong Hospital, Sejong, South Korea.,Brain Research Institute, Chungnam National University College of Medicine, Daejeon, South Korea
| | - Min Young Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Minah Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Justin Namju Kim
- Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, USA
| | - Bo Hye Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Joon Young Hyon
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Dongsup Kim
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Ja-Won Koo
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Doo-Yi Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Byung Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea .,Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, South Korea
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27
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Govender SM, De Jongh M. Identifying hearing impairment and the associated impact on the quality of life among the elderly residing in retirement homes in Pretoria, South Africa. SOUTH AFRICAN JOURNAL OF COMMUNICATION DISORDERS 2021; 68:e1-e9. [PMID: 33764149 PMCID: PMC8008190 DOI: 10.4102/sajcd.v68i1.788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 12/02/2020] [Accepted: 01/09/2021] [Indexed: 11/23/2022] Open
Abstract
Background Age-Related Hearing Loss (ARHL) is the most widespread sensory disorder in the elderly. Poor audiological support within retirement homes is one of the fundamental issues impacting the Quality of Life (QoL). Objectives The objectives of this study were to: (1) Identify the presence of hearing impairment through a hearing screening test battery in a sample of elderly participants residing in three retirement homes. (2) Determine the psychological, communication-related and social impact of the hearing impairment on the QoL in a sample of elderly participants residing in retirement homes. Method A prospective cross-sectional research design with quantitative methods of data analysis was used to obtain data from 70 elderly participants (mean age = 79 years, 79% were female). Ten of them used hearing aids. Hearing screening was conducted using otoscopy, tympanometry and air conduction screening (500 Hz–4 kHz). The World Health Organization Quality of Life (WHOQoL) questionnaire was adapted and utilised for the present study. Results Findings revealed that 77% of the sample obtained a refer result from the hearing screening protocol indicating a high presence of hearing impairment. Twenty-nine per cent (n = 16) of the participants felt depressed, worried and anxious because of their hearing loss and 20% of participants felt unaccepted by their significant others as a result of their hearing impairment. Hearing difficulties were significantly associated with a reduced QoL (p = 0.045). Eight of the 10 participants who wore hearing aids reported an overall improvement in QoL since receiving and utilising their hearing aids and 20% (n = 2) of hearing aid users reported challenges with maintaining their hearing aids. Conclusion The findings of this study emphasised the need for an increased role for audiological services provided by audiologists within retirement homes, thereby contributing to an improved QoL.
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Affiliation(s)
- Samantha M Govender
- Department of Speech-Language Pathology & Audiology, School of Health Sciences, Sefako Makgatho Health Sciences University, Pretoria.
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Irace AL, Sharma RK, Reed NS, Golub JS. Smartphone-Based Applications to Detect Hearing Loss: A Review of Current Technology. J Am Geriatr Soc 2020; 69:307-316. [PMID: 33341098 DOI: 10.1111/jgs.16985] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND/OBJECTIVES Age-related hearing loss (ARHL) is a widely prevalent yet manageable condition that has been linked to neurocognitive and psychiatric comorbidities. Multiple barriers hinder older individuals from being diagnosed with ARHL through pure-tone audiometry. This is especially true during the COVID-19 pandemic, which has resulted in the closure of many outpatient audiology and otolaryngology offices. Smartphone-based hearing assessment apps may overcome these challenges by enabling patients to remotely self-administer their own hearing examination. The objective of this review is to provide an up-to-date overview of current mobile health applications (apps) that claim to assess hearing. DESIGN Narrative review. MEASUREMENTS The Apple App Store and Google Play Store were queried for apps that claim to assess hearing. Relevant apps were downloaded and used to conduct a mock hearing assessment. Names of included apps were searched on four literature databases (PubMed/MEDLINE, EMBASE, Cochrane Library, and CINAHL) to determine which apps had been validated against gold standard methods. RESULTS App store searches identified 44 unique apps. Apps differed with respect to the type of test offered (e.g., hearing threshold test), cost, strategies to reduce ambient noise, test output (quantitative vs qualitative results), and options to export results. Validation studies were identified for seven apps. CONCLUSION Given their low cost and relative accessibility, smartphone-based hearing apps may facilitate screening for ARHL, particularly in the setting of limitations on in-person medical care due to COVID-19. However, app features vary widely, few apps have been validated, and user-centered designs for older adults are largely lacking. Further research and validation efforts are necessary to determine whether smartphone-based hearing assessments are a feasible and accurate screening tool for ARHL. Key Points Age-related hearing loss is a prevalent yet undertreated condition among older adults. Why Does this Paper Matter? Smartphone-based hearing test apps may facilitate remote screening for hearing loss, but limitations surrounding app validation, usability, equipment calibration, and data security should be addressed.
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Affiliation(s)
- Alexandria L Irace
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, New York, USA
| | - Rahul K Sharma
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, New York, USA
| | - Nicholas S Reed
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Justin S Golub
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, New York, USA
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Age-related hearing loss pertaining to potassium ion channels in the cochlea and auditory pathway. Pflugers Arch 2020; 473:823-840. [PMID: 33336302 PMCID: PMC8076138 DOI: 10.1007/s00424-020-02496-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/27/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022]
Abstract
Age-related hearing loss (ARHL) is the most prevalent sensory deficit in the elderly and constitutes the third highest risk factor for dementia. Lifetime noise exposure, genetic predispositions for degeneration, and metabolic stress are assumed to be the major causes of ARHL. Both noise-induced and hereditary progressive hearing have been linked to decreased cell surface expression and impaired conductance of the potassium ion channel KV7.4 (KCNQ4) in outer hair cells, inspiring future therapies to maintain or prevent the decline of potassium ion channel surface expression to reduce ARHL. In concert with KV7.4 in outer hair cells, KV7.1 (KCNQ1) in the stria vascularis, calcium-activated potassium channels BK (KCNMA1) and SK2 (KCNN2) in hair cells and efferent fiber synapses, and KV3.1 (KCNC1) in the spiral ganglia and ascending auditory circuits share an upregulated expression or subcellular targeting during final differentiation at hearing onset. They also share a distinctive fragility for noise exposure and age-dependent shortfalls in energy supply required for sustained surface expression. Here, we review and discuss the possible contribution of select potassium ion channels in the cochlea and auditory pathway to ARHL. We postulate genes, proteins, or modulators that contribute to sustained ion currents or proper surface expressions of potassium channels under challenging conditions as key for future therapies of ARHL.
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Dziemba OC, Aristeidou A, Brill S. Slope of electrically evoked compound action potential amplitude growth function is site-dependent. Cochlear Implants Int 2020; 22:136-147. [PMID: 33297870 DOI: 10.1080/14670100.2020.1853956] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES In human cochlear implant (CI) recipients, the slope of the electrically evoked compound action potential (ECAP) amplitude growth function (AGF) is not very well investigated, in comparison to the threshold derived from the AGF. This is despite the fact that it was shown in animal experiments that the slope correlates with the number of excitable neurons. The rationale of this study was to establish baseline data of the AGF slope for possible clinical applications, while investigating stability over time and dependence on cochlear site. DESIGN ECAP AGFs of 16 ears implanted with MED-EL CIs were recorded on all electrode contacts during the normal clinical routine at 4 different points in time. RESULTS Due to patient availability, not all 16 ears could be measured at all 4 points in time. A dependence of the slope on the electrode position was visible and statistically significant: At the three electrode contacts at the apical end of the array, the slope is greater compared to the medial and basal region of the cochlea. CONCLUSION The three most apical electrode contacts show greater slopes of ECAP AGF recordings. Our data of the cohort slopes show mild effects between the 4 different points in time.
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Affiliation(s)
- Oliver C Dziemba
- Department of ENT, Head & Neck Surgery, University Medicine Greifswald, Greifswald, Germany
| | - Aristotelis Aristeidou
- Department of ENT, Head & Neck Surgery, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Brill
- MED-EL Elektromedizinische Geräte Deutschland GmbH, Starnberg, Germany
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Abstract
OBJECTIVES Hearing loss is most commonly observed at high frequencies. High-frequency hearing loss (HFHL) precedes and predicts hearing loss at lower frequencies. It was previously shown that an automated, self-administered digits-in-noise (DIN) test can be sensitized for detection of HFHL by low-pass filtering the speech-shaped masking noise at 1.5 kHz. This study was designed to investigate whether sensitivity of the DIN to HFHL can be enhanced further using low-pass noise filters with higher cutoff frequencies. DESIGN The US-English digits 0 to 9, homogenized for audibility, were binaurally presented in different noise maskers including one broadband and three low-pass (cutoff at 2, 4, and 8 kHz) filtered speech-shaped noises. DIN-speech reception thresholds (SRTs) were obtained from 60 normal hearing (NH), and 40 mildly hearing impaired listeners with bilateral symmetric sensorineural hearing loss. Standard and extended high-frequency audiometric pure-tone averages (PTAs) were compared with the DIN-SRTs. RESULTS Narrower masking noise bandwidth generally produced better (more sensitive) mean DIN-SRTs. There were strong and significant correlations between SRT and PTA in the hearing impaired group. Lower frequency PTALF 0.5,1, 2, 4 kHz had the highest correlation and the steepest slope with SRTs obtained from the 2-kHz filter. Higher frequency PTAHF 4,8,10,12.5 kHz correlated best with SRTs obtained from 4- and 8-kHz filtered noise. The 4-kHz low-pass filter also had the highest sensitivity (92%) and equally highest (with the 8-kHz filter) specificity (90%) for detecting an average PTAHF of 20 dB or more. CONCLUSIONS Of the filters used, DIN sensitivity to higher frequency hearing loss was greatest using the 4-kHz low-pass filter. These results suggest that low-pass filtered noise may be usefully substituted for broadband noise to improve earlier detection of HFHL using DIN.
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Lichen IM, Berning MJ, Bower SM, Stanich JA, Jeffery MM, Campbell RL, Walker LE, Bellolio F. Non-pharmacologic interventions improve comfort and experience among older adults in the Emergency Department. Am J Emerg Med 2020; 39:15-20. [PMID: 32507574 DOI: 10.1016/j.ajem.2020.04.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/19/2020] [Accepted: 04/28/2020] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVE Determine if a comfort cart would improve older adults' comfort and facilitate communication during Emergency Department (ED) visits. METHODS A comfort cart containing low-cost, non-pharmacological interventions to improve patient comfort and ability to communicate (e.g., hearing amplifiers, reading glasses) were made available to patients aged ≥65 years. Patients and clinicians were surveyed to assess effectiveness. We followed the Standards for Quality Improvement Reporting Excellence: SQUIRE 2.0 guidelines. RESULTS Three hundred patients and 100 providers were surveyed. Among patients, 98.0%, 95.1%, and 67.5% somewhat or strongly agreed that the comfort cart improved comfort, overall experience, and independence, respectively. Among providers, 97.0%, 95.0%, 87.0%, and 83% somewhat or strongly agreed that the comfort cart provided comfort, improved patient satisfaction, increased ability to give compassionate care, and increased patient orientation. CONCLUSION The comfort cart was an affordable and effective intervention that improved patients' comfort by facilitating communication, wellbeing, and compassionate care delivery.
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Affiliation(s)
| | | | - Susan M Bower
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA; Department of Nursing, Mayo Clinic, Rochester, MN, USA.
| | | | - Molly M Jeffery
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA; Department Health Science Research, Division of Health Care Policy and Research, Mayo Clinic, Rochester, MN, USA.
| | - Ronna L Campbell
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA.
| | - Laura E Walker
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA.
| | - Fernanda Bellolio
- Department of Emergency Medicine, Mayo Clinic, Rochester, MN, USA; Department Health Science Research, Division of Health Care Policy and Research, Mayo Clinic, Rochester, MN, USA.
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Age Dependent Cost-Effectiveness of Cochlear Implantation in Adults. Is There an Age Related Cut-off? Otol Neurotol 2020; 40:892-899. [PMID: 31157721 DOI: 10.1097/mao.0000000000002275] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To analyze the impact of age at implantation on the cost-effectiveness of cochlear implantation (CI). STUDY DESIGN Cost-utility analysis in an adapted Markov model. SETTING Adults with profound postlingual hearing loss in a "high income" country. INTERVENTION Unilateral and sequential CI were compared with hearing aids (HA). MAIN OUTCOME MEASURE Incremental cost-effectiveness ratio (ICER), calculated as costs per quality adjusted life year (QALY) gained (in CHF/QALY), for individual age and sex combinations in relation to two different willingness to pay thresholds. 1 CHF (Swiss franc) is equivalent to 1.01 USD. RESULTS When a threshold of 50,000 CHF per QALY is applied, unilateral CI in comparison to HA is cost-effective up to an age of 91 for women and 89 for men. Sequential CI in comparison to HA is cost-effective up to an age of 87 for women and 85 for men. If a more contemporary threshold of 100,000 CHF per QALY is applied, sequential CI in comparison to unilateral CI is cost-effective up to an age of 80 for women and 78 for men. CONCLUSIONS Performing both sequential and unilateral CI is cost-effective up to very advanced ages when compared with hearing aids.
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34
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Salvatore F. The shift of the paradigm between ageing and diseases. ACTA ACUST UNITED AC 2020; 58:1635-1644. [DOI: 10.1515/cclm-2020-0125] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 02/17/2020] [Indexed: 12/12/2022]
Abstract
Abstract
In the area of the Medical Sciences, the chronological age has always been, and still is, an indicator by which we try to understand the health status of an individual. However, besides considering people born with an already expressed disease, each human genome has sequence alterations called predisposing mutations; carriers of such genetic alterations have an increased risk of contracting diseases during their life. In addition, the exposome, i.e. the totality of environmental noxae (“hits”) to which our body is exposed throughout life (through ingestion, breathing, body surface hits, and psychosociological stress agents, etc.) contributes to increase gradually but inexorably the frailty of an organism, and this process is usually referred to as “physiological ageing”. This position paper proposes that we invert our visual angle and view the passage-of-time not as the cause of diseases, but consider the genome alterations present at birth and the noxae received during our life as the real major causes of ageing. The Biomedical Sciences are now increasingly unraveling the etiopathogenesis of most chronic degenerative diseases; thus, it will be possible to monitor and treat those that most contribute to the increased frailty of each person, which is now referred to with the misnomer “physiological ageing”. These concepts are not banal; indeed, they imply that we must try to avoid the causes of alterations that result later in chronic degenerative diseases. Thus, we should shift our attention from the cure to the prevention of alterations/diseases also to improve both the length and quality of our life. Moreover, this approach involves real personalized or individualized medicine, thus conferring a more direct benefit to each of us by finalizing either the cure or the monitoring of diseases.
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Affiliation(s)
- Francesco Salvatore
- Department of Molecular Medicine and Medical Biotechnologies , University of Naples Federico II , Naples , Italy
- CEINGE Biotecnologie Avanzate Scarl , Naples , Italy
- Inter-University Center for Multifactorial and Multigenes Chronic Human Diseases, Federico II Naples, Tor Vergata Roma2, Chieti-Pescara Universities , Naples , Italy
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35
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Liu XZ, Yan D, Mittal R, Ballard ME, Feng Y. Progressive Dominant Hearing Loss (Autosomal Dominant Deafness-41) and P2RX2 Gene Mutations: A Phenotype-Genotype Study. Laryngoscope 2019; 130:1657-1663. [PMID: 31593348 DOI: 10.1002/lary.28318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/29/2019] [Accepted: 08/28/2019] [Indexed: 01/14/2023]
Abstract
OBJECTIVES/HYPOTHESIS P2RX2 encoding P2X purinoreceptor 2 has been identified as the gene responsible for autosomal dominant deafness-41 (DFNA41) as well as mediating vulnerability to noise-induced hearing loss (NIHL). The objective of this study was to investigate the audiological and molecular characteristics of P2RX2-related deafness, with emphasis on its role in NIHL by determining the audiological characteristics of a previously reported six-generation DFNA41 family with a 10-year follow-up. We have also summarized phenotype-genotype correlations of P2RX2-related deafness in human and mouse models. STUDY DESIGN We describe clinical longitudinal follow-up in the DFNA41 family with P2RX2 (p.Val60Leu) mutation and perform a systematic literature search in PubMed and poster presentations on meeting/conference websites to identify current insights into P2RX2-mediated NIHL. METHODS Clinical and physical examinations of the family members were performed, and audiograms were obtained to assess the hearing thresholds. Clinical follow-up features in this DFNA41 family are presented along with correlation analyses of phenotype-genotype in all reported families with P2RX2-related deafness. RESULTS Progressive hearing impairment was confirmed by history and by audiological follow-up testing in all the patients. The onset of hearing loss was between age 25 and 35 years. All affected subjects had bilateral sensorineural hearing loss involving all frequencies with some significant gender differences. CONCLUSIONS Our study and the review of the literature suggest that P2RX2 plays a crucial role in predisposition to noise-induced and age-related hearing loss. A better knowledge about the P2RX2-associated genetic variants can help in developing novel therapeutic strategies. LEVEL OF EVIDENCE 2b Laryngoscope, 130:1657-1663, 2020.
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Affiliation(s)
- Xue Zhong Liu
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, U.S.A.,Dr. John T. Macdonald Foundation Department of Human Genetics and John P. Hussman Institute for Human Genetics, University of Miami Miller School of Medicine, Miami, Florida, U.S.A
| | - Denise Yan
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, U.S.A
| | - Rahul Mittal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, U.S.A
| | - Megan E Ballard
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, U.S.A
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China
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36
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Noble KV, Liu T, Matthews LJ, Schulte BA, Lang H. Age-Related Changes in Immune Cells of the Human Cochlea. Front Neurol 2019; 10:895. [PMID: 31474935 PMCID: PMC6707808 DOI: 10.3389/fneur.2019.00895] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 08/02/2019] [Indexed: 12/12/2022] Open
Abstract
Age-related hearing loss is a chronic degenerative disorder affecting one in two individuals above the age of 75. Current population projections predict a steady climb in the number of older individuals making the search for interventions to prevent or reverse this disorder even more critical. There is growing acceptance that aberrant activity of resident or infiltrating immune cells, such as macrophages, is a major factor contributing to the onset and progression of age-related degenerative diseases. However, how macrophage populations and their functionally-driven morphological characteristics change with age in the human cochlea remains largely unknown. In this study, we employed immunohistochemical approaches along with confocal and super-resolution imaging, three-dimensional reconstructions, and quantitative analysis to determine age-related changes in macrophage numbers and morphology as well as interactions with other cell-types and structures of the auditory nerve and lateral wall in the human cochlea. In the cochlea of human ears from young and middle aged adults those macrophages in the auditory nerve assumed a worm-like structure in contrast to those in the spiral ligament or associated with the dense microvascular network in the stria vascularis which exhibited a highly ramified morphology. Macrophages in both the auditory nerve and cochlear lateral wall showed morphological alterations with age. The population of activated macrophages in the auditory nerve increased in cochleas obtained from older donors. Dual-immunohistochemical staining with macrophage, myelin, and neuronal markers revealed increased interactions of macrophages with the glial and neuronal components of the aged auditory nerve. These findings implicate the involvement of abnormal macrophage-glia interactions in age-related physiological and pathological alterations in the human cochlea. There is clearly a need to further investigate the contribution of macrophage-associated inflammatory dysregulation in human presbyacusis.
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Affiliation(s)
- Kenyaria V. Noble
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Ting Liu
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Lois J. Matthews
- Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Bradley A. Schulte
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
- Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Hainan Lang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
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37
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Cosh S, Helmer C, Delcourt C, Robins TG, Tully PJ. Depression in elderly patients with hearing loss: current perspectives. Clin Interv Aging 2019; 14:1471-1480. [PMID: 31616138 PMCID: PMC6698612 DOI: 10.2147/cia.s195824] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 07/31/2019] [Indexed: 11/23/2022] Open
Abstract
Hearing loss (HL) is highly common in older adulthood, constituting the third most prevalent chronic health condition in this population. In addition to posing a substantial burden to disease and negatively impacting quality of life, an emerging literature highlights that HL is associated with unipolar depression including among older adults. This review outlines evidence examining the HL and depression relationship as well as clinical implications for assessment and treatment of comorbid depression and HL. Although prevalence estimates of comorbid depression in HL vary, as many as 1 in 5 experience clinically relevant depression symptoms. Both cross-sectional and longitudinal studies indicate that HL is related to increased unipolar depression symptoms, although the strength of the association varies between studies. A range of methodological variations, such as inclusion age, severity of HL and assessment of depression, likely underpin this heterogeneity. Overall, however, the evidence clearly points to an association of HL with clinically relevant depression symptoms. The association with the diagnosis of major depression disorder remains less clear and under-researched. HL is also associated with a range of other poor mental health outcomes in older adults, including anxiety and suicidal ideation, and predicts poorer cognitive functioning. Accordingly, assessment and treatment of comorbid depression in HL is pertinent to promote mental well-being among older adults. Currently, evidence regarding best practice for treating depression in HL remains scant. Preliminary evidence indicates that audiological rehabilitation, including use of hearing aids, as well as community-based hearing interventions can also improve mental health. Psychological intervention that enhances communication skills and addresses coping strategies might also be beneficial for this population. Additionally, evidence suggests that online interventions are feasible and may circumvent communication difficulties in therapy associated with HL. Due to poor help-seeking among this population, an enhanced focus on specific and targeted assessment and treatment is likely necessary to ensure reduced mental health burden among older adults with HL.
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Affiliation(s)
- Suzanne Cosh
- School of Psychology, University of New England , Armidale, NSW 2351, Australia
| | - Catherine Helmer
- Bordeaux Population Health Research Center, University Bordeaux, Inserm, Team LEHA, UMR 1219 , Bordeaux F-33000, France
| | - Cecile Delcourt
- Bordeaux Population Health Research Center, University Bordeaux, Inserm, Team LEHA, UMR 1219 , Bordeaux F-33000, France
| | - Tamara G Robins
- School of Psychology, The University of Adelaide , Adelaide, SA 5005, Australia
| | - Phillip J Tully
- Discipline of Medicine, Freemason's Foundation Centre for Men's Health, The University of Adelaide, Adelaide, SA 5005, Australia
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Han B, Zhou T, Tu Y, Wang T, He Z, Li Y, Yuan J, Yang X, Sun H. Correlation between mitochondrial DNA 4977 bp deletion and presbycusis: A system review and meta-analysis. Medicine (Baltimore) 2019; 98:e16302. [PMID: 31277167 PMCID: PMC6635239 DOI: 10.1097/md.0000000000016302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE Researchers have evaluated the associations between mitochondrial DNA (mtDNA) 4977 bp deletion and presbycusis. This study aimed to assess the differences of mtDNA 4977 bp deletion between presbycusis patients and controls by conducting a meta-analysis of published studies. METHODS Databases, including PubMed, Embase, Web of Science, China National Knowledge Infrastructure (CNKI), and Wanfang Data were searched to collect case-control studies on the correlation between mitochondrial DNA 4977 bp deletion and presbycusis. The research findings of related articles were collected according to the inclusion criteria. Pooled odds ratios (ORs) and corresponding confidence intervals (CIs) were calculated. Meanwhile, subgroup analysis was performed to examine the source of heterogeneity. Revman 5.3 and Stata 12.0 software were used for data synthesis. RESULTS Eight English and Chinese studies were included in the meta-analysis, the results of which showed that mitochondrial DNA 4977 bp deletion could increase the risk of presbycusis (OR = 8.16, 95% CI: 3.51-18.99), and the difference was statistically significant (P <. 01). Analysis of the polled OR showed the incidence of mtDNA 4977 bp deletion was 8.50 times higher in Asians with presbycusis than in the control group. And the OR in the studies of occidentals was 7.24. Sample source analysis was also performed with the sample source divided by temporal bone source and other sources (hair and blood). The OR was 4.18 and 22.36 for the temporal bone and other sources, respectively. CONCLUSION Mitochondrial DNA 4977 bp deletion could increase the risk of presbycusis.
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Affiliation(s)
- Baoai Han
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
- Public Laboratory, Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Medical University, Tianjin, China
| | - Tao Zhou
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Yaqin Tu
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Tian Wang
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA
| | - Zuhong He
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Yongqin Li
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Jie Yuan
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Xiuping Yang
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Haiying Sun
- Departments of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA
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39
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Hong H, Dooley KE, Starbird LE, Francis HW, Farley JE. Adverse outcome pathway for aminoglycoside ototoxicity in drug-resistant tuberculosis treatment. Arch Toxicol 2019; 93:1385-1399. [PMID: 30963202 DOI: 10.1007/s00204-019-02407-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/06/2019] [Indexed: 12/22/2022]
Abstract
Individuals treated for multidrug-resistant tuberculosis (MDR-TB) with aminoglycosides (AGs) in resource-limited settings often experience permanent hearing loss. However, AG ototoxicity has never been conceptually integrated or causally linked to MDR-TB patients' pre-treatment health condition. We sought to develop a framework that examines the relationships between pre-treatment conditions and AG-induced hearing loss among MDR-TB-infected individuals in sub-Saharan Africa. The adverse outcome pathway (AOP) approach was used to develop a framework linking key events (KEs) within a biological pathway that results in adverse outcomes (AO), which are associated with chemical perturbation of a molecular initiating event (MIE). This AOP describes pathways initiating from AG accumulation in hair cells, sound transducers of the inner ear immediately after AG administration. After administration, the drug catalyzes cellular oxidative stress due to overproduction of reactive oxygen species. Since oxidative stress inhibits mitochondrial protein synthesis, hair cells undergo apoptotic cell death, resulting in irreversible hearing loss (AO). We identified the following pre-treatment conditions that worsen the causal linkage between MIE and AO: HIV, malnutrition, aging, noise, smoking, and alcohol use. The KEs are: (1) nephrotoxicity, pre-existing hearing loss, and hypoalbuminemia that catalyzes AG accumulation; (2) immunodeficiency and antioxidant deficiency that trigger oxidative stress pathways; and (3) co-administration of mitochondrial toxic drugs that hinder mitochondrial protein synthesis, causing apoptosis. This AOP clearly warrants the development of personalized interventions for patients undergoing MDR-TB treatment. Such interventions (i.e., choosing less ototoxic drugs, scheduling frequent monitoring, modifying nutritional status, avoiding poly-pharmacy) will be required to limit the burden of AG ototoxicity.
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Affiliation(s)
- Hyejeong Hong
- Johns Hopkins University School of Nursing, 525 North Wolfe Street, Baltimore, MD, 21205, USA. .,Johns Hopkins University School of Nursing, The REACH Initiative, 855 N. Wolfe Street, 21205, Baltimore, MD, USA.
| | - Kelly E Dooley
- Divisions of Clinical Pharmacology and Infectious Disease, Johns Hopkins University School of Medicine, 600 North Wolfe Street, 21205, Baltimore, MD, USA
| | - Laura E Starbird
- Center for Health Policy, Columbia University School of Nursing, 560 W 168 St, 10032, New York, NY, USA
| | - Howard W Francis
- Division of Head and Neck Surgery and Communication Sciences, Duke University School of Medicine, 40 Duke Medicine Circle, 27710, Durham, NC, USA
| | - Jason E Farley
- Johns Hopkins University School of Nursing, 525 North Wolfe Street, Baltimore, MD, 21205, USA.,Johns Hopkins University School of Nursing, The REACH Initiative, 855 N. Wolfe Street, 21205, Baltimore, MD, USA
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40
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Abstract
Hearing loss is one of the most common yet unrecognized impairments experienced by adults, especially as they age. Mental health investigators and practitioners require better understanding of hearing loss, its association with psychiatric disorders, and the treatment of these disorders in the presence of hearing loss as well as the treatment of hearing loss itself. In this review, the authors briefly explore the global burden of hearing loss. Next we provide an overview of the extant literature on hearing loss associated with cognitive impairment, depression, anxiety disorders, psychoses, and quality of life with attention focused on the strength of the association, possible mechanisms explaining the association, data on treatment options specific to these disorders, and future research opportunities for these disorders. Current approaches to the treatment of hearing loss are presented, including hearing aids, rehabilitation including psychotherapies, surgical procedures (specifically cochlear implants), and induction loops connected to telecoils. Finally, cutting edge research into the pathophysiology and potential biological treatments of hearing loss is described.
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Affiliation(s)
- Dan G Blazer
- Department of Psychiatry and Behavioral Sciences,Duke University School of Medicine, Duke University Medical Center,Durham, NC 27710 Box 3003,USA
| | - Debara L Tucci
- Division of Head and Neck Surgery and Communication Sciences, Department of Surgery,Duke University School of Medicine,Durham, NC 27710 Box 3003,USA
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