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Cheung ESL, Zhang Z. Moderating Role of Neighborhood Environment in the Associations Between Hearing Loss and Cognitive Challenges Among Older Adults: Evidence From US National Study. Res Aging 2024; 46:400-413. [PMID: 38361482 DOI: 10.1177/01640275241234372] [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: 02/17/2024]
Abstract
This study examined the associations between hearing loss and cognitive challenges among community-dwelling older adults and whether neighborhood characteristics (physical disorder and low social cohesion) moderated the associations. Cross-sectional national data from Round 11 of the National Health and Aging Trends Study were adopted (N = 2,515). Multinomial logistic regressions were used to examine associations among variables and interactive analyses were conducted to examine moderating effects. Results indicated significant relationships between the experience of hearing loss and possible dementia and between severe or profound hearing loss and probable dementia. Interactive models suggested that residing in neighborhoods with physical disorder and low social cohesion were negatively associated with possible dementia among older adults with moderate and severe or profound hearing loss, respectively, compared to those without hearing loss. Findings underscore the necessity of environmental and social interventions to enhance cognitive health among older adults with varying degrees of hearing challenges.
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Affiliation(s)
| | - Zhe Zhang
- Teachers College, Columbia University, New York, NY, USA
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2
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Contador I, Buch-Vicente B, del Ser T, Llamas-Velasco S, Villarejo-Galende A, Benito-León J, Bermejo-Pareja F. Charting Alzheimer's Disease and Dementia: Epidemiological Insights, Risk Factors and Prevention Pathways. J Clin Med 2024; 13:4100. [PMID: 39064140 PMCID: PMC11278014 DOI: 10.3390/jcm13144100] [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: 05/23/2024] [Revised: 07/08/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
Alzheimer's disease (AD), the most common cause of dementia, is a complex and multifactorial condition without cure at present. The latest treatments, based on anti-amyloid monoclonal antibodies, have only a modest effect in reducing the progression of cognitive decline in AD, whereas the possibility of preventing AD has become a crucial area of research. In fact, recent studies have observed a decrease in dementia incidence in developed regions such as the US and Europe. However, these trends have not been mirrored in non-Western countries (Japan or China), and the contributing factors of this reduction remain unclear. The Lancet Commission has delineated a constrained classification of 12 risk factors across different life stages. Nevertheless, the scientific literature has pointed to over 200 factors-including sociodemographic, medical, psychological, and sociocultural conditions-related to the development of dementia/AD. This narrative review aims to synthesize the risk/protective factors of dementia/AD. Essentially, we found that risk/protective factors vary between individuals and populations, complicating the creation of a unified prevention strategy. Moreover, dementia/AD explanatory mechanisms involve a diverse array of genetic and environmental factors that interact from the early stages of life. In the future, studies across different population-based cohorts are essential to validate risk/protective factors of dementia. This evidence would help develop public health policies to decrease the incidence of dementia.
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Affiliation(s)
- Israel Contador
- Department of Basic Psychology, Psychobiology, and Methodology of Behavioral Sciences, Faculty of Psychology, University of Salamanca, 37005 Salamanca, Spain
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, 17117 Stockholm, Sweden
| | - Bárbara Buch-Vicente
- Department of Basic Psychology, Psychobiology, and Methodology of Behavioral Sciences, Faculty of Psychology, University of Salamanca, 37005 Salamanca, Spain
| | - Teodoro del Ser
- Alzheimer Centre Reina Sofia—CIEN Foundation, Institute of Health Carlos III, 28031 Madrid, Spain;
| | - Sara Llamas-Velasco
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain; (S.L.-V.); (A.V.-G.); (J.B.-L.)
- Department of Neurology, University Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Alberto Villarejo-Galende
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain; (S.L.-V.); (A.V.-G.); (J.B.-L.)
- Department of Neurology, University Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Julián Benito-León
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain; (S.L.-V.); (A.V.-G.); (J.B.-L.)
- Department of Neurology, University Hospital 12 de Octubre, 28041 Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28029 Madrid, Spain
- Department of Medicine, Faculty of Medicine, Complutense University, 28040 Madrid, Spain
| | - Félix Bermejo-Pareja
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28029 Madrid, Spain
- Department of Medicine, Faculty of Medicine, Complutense University, 28040 Madrid, Spain
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Zhang J, Feng R, Cao Y, Mo H. A study on the relationship between recreational physical activity and audiovisual difficulty for older adults. Sci Rep 2024; 14:7059. [PMID: 38528013 DOI: 10.1038/s41598-024-55209-z] [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] [Received: 10/18/2023] [Accepted: 02/21/2024] [Indexed: 03/27/2024] Open
Abstract
Audiovisual difficulty are especially common in older adults. Audiovisual difficulty seriously affect the quality of life of older adults in their later years. It is a top priority to find out the related factors, and to intervene and prevent them. The purpose of this study was to explore the relationship between recreational physical activities and audiovisual difficulty in older adults. We hope that older adults can reduce the risk of hearing and visual difficulty through scientific physical activity. A total of 4,886 people were sampled from the National Health and Nutrition Examination Survey (NHANES) from 2013 to 2018. Recreational physical activity was assessed through the Global Physical Activity Questionnaire (GPAQ); Hearing and visual difficulty were assessed using the Disability Questionnaire (DLQ). Chi-square test was used for categorical variables and rank sum test was used for measurement variables. P < 0.05 was considered statistically significant (bilateral test). After univariate analysis, binary Logistic regression analysis was performed with recreational physical activity as the independent variable, statistically significant demographic variable as the covariate, and hearing and visual difficulty as the dependent variable, respectively. (1) After excluding all confounding variables, recreational physical activity was significantly associated with hearing difficulty (P < 0.001), odds ratio (OR) 0.657 (95% CI 0.5899-0.733); (2) Recreational physical activity was significantly associated with visual difficulty (P < 0.001), OR 0.731 (95% CI 0.630-0.849). (1) Recreational physical activity is the protective factor of hearing difficulty in older adults; (2) Recreational physical activity is a protective factor for visual difficulty in older adults.
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Affiliation(s)
- Jipeng Zhang
- School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Rui Feng
- School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, People's Republic of China.
| | - Yiwen Cao
- School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Hongfei Mo
- School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, People's Republic of China
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
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Hood KE, Hurley LM. Listening to your partner: serotonin increases male responsiveness to female vocal signals in mice. Front Hum Neurosci 2024; 17:1304653. [PMID: 38328678 PMCID: PMC10847236 DOI: 10.3389/fnhum.2023.1304653] [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: 09/29/2023] [Accepted: 12/28/2023] [Indexed: 02/09/2024] Open
Abstract
The context surrounding vocal communication can have a strong influence on how vocal signals are perceived. The serotonergic system is well-positioned for modulating the perception of communication signals according to context, because serotonergic neurons are responsive to social context, influence social behavior, and innervate auditory regions. Animals like lab mice can be excellent models for exploring how serotonin affects the primary neural systems involved in vocal perception, including within central auditory regions like the inferior colliculus (IC). Within the IC, serotonergic activity reflects not only the presence of a conspecific, but also the valence of a given social interaction. To assess whether serotonin can influence the perception of vocal signals in male mice, we manipulated serotonin systemically with an injection of its precursor 5-HTP, and locally in the IC with an infusion of fenfluramine, a serotonin reuptake blocker. Mice then participated in a behavioral assay in which males suppress their ultrasonic vocalizations (USVs) in response to the playback of female broadband vocalizations (BBVs), used in defensive aggression by females when interacting with males. Both 5-HTP and fenfluramine increased the suppression of USVs during BBV playback relative to controls. 5-HTP additionally decreased the baseline production of a specific type of USV and male investigation, but neither drug treatment strongly affected male digging or grooming. These findings show that serotonin modifies behavioral responses to vocal signals in mice, in part by acting in auditory brain regions, and suggest that mouse vocal behavior can serve as a useful model for exploring the mechanisms of context in human communication.
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Affiliation(s)
- Kayleigh E. Hood
- Hurley Lab, Department of Biology, Indiana University, Bloomington, IN, United States
- Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, IN, United States
| | - Laura M. Hurley
- Hurley Lab, Department of Biology, Indiana University, Bloomington, IN, United States
- Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, IN, United States
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Andries E, Nelen J, de Smit S, Sluyts M, Gilles A, Van Rompaey V, Mertens G. The effect of anxiety and depression on cognition in older adults with severe-to-profound hearing loss. Eur Arch Otorhinolaryngol 2024; 281:75-81. [PMID: 37351666 DOI: 10.1007/s00405-023-08080-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023]
Abstract
PURPOSE To evaluate the effect of anxiety and/or depression on cognition in older adults with severe-to-profound hearing loss. METHODOLOGY In total, 83 older subjects (age of 55 years or older) with post-lingual, bilateral, severe-to-profound hearing loss were enrolled in this study between April 2014 and March 2021. The Repeatable Battery for Assessment of Neuropsychological Status for Hearing-impaired individuals (RBANS-H) and the Hospital Anxiety and Depression Scale (HADS) were used to measure cognition and anxiety/depression. RESULTS A multiple linear regression was used to predict the total RBANS-H score based on the total HADS score, years of education and age of the participants. These variables statistically significantly predicted RBANS-H, F(3, 79) = 12.604, p = 0.010, R2 = 0.324. All three variables added statistically significantly to the prediction, p < 0.05. A higher HADS-score resulted in a significantly lower RBANS-H score with an estimated effect size b1 of - 0.486. In addition, a multiple linear regression was executed for each subdomain of the RBANS-H and its relation to the total HADS-score, age and years of education of the participants. These variables statistically significantly predicted RBANS-H immediate memory F(3, 79) = 16.858, p = 0.003, R2 = 0.390. All three variables added statistically significantly to the prediction, p < 0.05. In the other four subdomains no statistical significance was observed. CONCLUSIONS Anxiety and/or depression have a significantly negative impact on cognition in individuals with severe-to-profound hearing loss. This negative correlation was mainly attributable to the significantly lower score in the immediate memory subdomain.
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Affiliation(s)
- Ellen Andries
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital (UZA), Wilrijkstraat 10, Edegem, 2650, Antwerp, Belgium.
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium.
| | - Jonas Nelen
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Sam de Smit
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Maarten Sluyts
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Annick Gilles
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital (UZA), Wilrijkstraat 10, Edegem, 2650, Antwerp, Belgium
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
- Department of Human and Social Welfare, University College Ghent (HoGent), Ghent, Belgium
| | - Vincent Van Rompaey
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital (UZA), Wilrijkstraat 10, Edegem, 2650, Antwerp, Belgium
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
| | - Griet Mertens
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital (UZA), Wilrijkstraat 10, Edegem, 2650, Antwerp, Belgium
- Experimental Laboratory of Translational Neurosciences and Dento-Otolaryngology, Faculty of Medicine and Health Sciences, University of Antwerp (UA), Antwerp, Belgium
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Diao T, Ma X, Fang X, Duan M, Yu L. Compensation in neuro-system related to age-related hearing loss. Acta Otolaryngol 2024; 144:30-34. [PMID: 38265951 DOI: 10.1080/00016489.2023.2295400] [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: 12/07/2023] [Accepted: 12/10/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Age-related hearing loss (ARHL) is a major cause of chronic disability among the elderly. Individuals with ARHL not only have trouble hearing sounds, but also with speech perception. As the perception of auditory information is reliant on integration between widespread brain networks to interpret auditory stimuli, both auditory and extra-auditory systems which mainly include visual, motor and attention systems, play an important role in compensating for ARHL. OBJECTIVES To better understand the compensatory mechanism of ARHL and inspire better interventions that may alleviate ARHL. METHODS We mainly focus on the existing information on ARHL-related central compensation. The compensatory effects of hearing aids (HAs) and cochlear implants (CIs) on ARHL were also discussed. RESULTS Studies have shown that ARHL can induce cochlear hair cell damage or loss and cochlear synaptopathy, which could induce central compensation including compensation of auditory and extra-auditory neural networks. The use of HAs and CIs can improve bottom-up processing by enabling 'better' input to the auditory pathways and then to the cortex by enhancing the diminished auditory signal. CONCLUSIONS The central compensation of ARHL and its possible correlation with HAs and CIs are current hotspots in the field and should be given focus in future research.
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Affiliation(s)
- Tongxiang Diao
- Department of Otolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, China
| | - Xin Ma
- Department of Otolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, China
| | - Xuan Fang
- Department of Human Anatomy, Histology & Embryology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Maoli Duan
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
- Department of Otolaryngology, Head and Neck Surgery & Audiology and Neurotology, Karolinska University Hospital, Karolinska Institute, Stockholm, Sweden
| | - Lisheng Yu
- Department of Otolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, China
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Yin Q, Shi G, Zhu L. Association between gut microbiota and sensorineural hearing loss: a Mendelian randomization study. Front Microbiol 2023; 14:1230125. [PMID: 37915857 PMCID: PMC10616596 DOI: 10.3389/fmicb.2023.1230125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/25/2023] [Indexed: 11/03/2023] Open
Abstract
Background Several recent studies speculated that the gut microbiota is associated with sensorineural hearing loss (SNHL) and proposed the concept of the gut-inner ear axis. However, the causal effect of gut microbiota on SNHL is still unknown. In this study, we performed a two-sample Mendelian randomization (MR) analysis to estimate the causal effect of gut microbiota on SNHL. Methods Gut microbiota data were obtained from the largest available genome-wide association study (n = 18,340) conducted by the MiBioGen consortium. The summary statistics of SNHL were obtained from the FinnGen consortium R8 release data (28,310 cases and 302,750 controls). The causal effects were estimated with inverse-variance weighted, MR-Egger, and weighted median. Reverse Mendelian randomization analysis was performed on the bacteria that were found to be associated with SNHL in forward Mendelian randomization analysis. We then performed sensitivity analyses, including Cochran's Q-test, MR-Egger intercept test, MR-PRESSO, cML-MA-BIC, and leave-one-out analysis, to detect heterogeneity and pleiotropy. Results The inverse-variance weighted results suggested that Lachnospiraceae (UCG001) had a significant protective effect against SNHL (odds ratio = 0.85, 95% confidence interval: 0.78-0.93, P = 6.99 × 10-4). In addition, Intestinimonas (odds ratio = 0.89, 95% confidence interval: 0.82-0.97, P = 8.53 × 10-3) presented a suggestively protective effect on SNHL. Rikenellaceae (RC9gutgroup) (odds ratio = 1.08, 95% confidence interval: 1.02-1.15, P = 0.01) and Eubacterium (hallii group) (odds ratio = 1.12, 95% confidence interval: 1.00-1.24, P = 0.048) suggestively increase the risk of SNHL. The results of the reverse MR analysis showed that there is no significant causal effect of SNHL on the gut microbiota. No significant heterogeneity of instrumental variables or pleiotropy was detected. Conclusion The evidence that the four genera mentioned above are associated with SNHL supports the hypothesis of a gut-inner ear axis. Our study provides microbial markers for the prevention and treatment of SNHL, and further studies are needed to explore the mechanisms of the gut microbiome-inner ear axis in health and diseases.
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Affiliation(s)
- Qiuyuan Yin
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, Yunnan, China
| | - Guolin Shi
- Department of Neurosurgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Lei Zhu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, Yunnan, China
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Jeon YH, Krein L, O’Connor CMC, Mowszowski L, Duffy S, Seeher K, Rauch A. A Systematic Review of Quality Dementia Clinical Guidelines for the Development of WHO's Package of Interventions for Rehabilitation. THE GERONTOLOGIST 2023; 63:1536-1555. [PMID: 36043424 PMCID: PMC10581378 DOI: 10.1093/geront/gnac105] [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] [Received: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND OBJECTIVES As part of the WHO Rehabilitation 2030 call for action, the WHO Rehabilitation Programme is developing its Package of Interventions for Rehabilitation (PIR) to support ministries of health around the globe in integrating rehabilitation services into health systems. As a vital step for this PIR development, we conducted a systematic review of clinical practice guidelines (CPGs) for dementia to identify interventions for rehabilitation and related evidence. RESEARCH DESIGN AND METHODS Following WHO Rehabilitation Programme and Cochrane Rehabilitation's methodology, quality CPGs published in English between January 2010 and March 2020 were identified using PubMed, Embase, CINAHL, PEDro, Google Scholar, guideline databases, and professional society websites. Guideline quality was assessed using the Appraisal of Guidelines for Research and Evaluation (II). RESULTS Of the 22 CPGs that met the selection criteria, 6 satisfied the quality evaluation. Three hundred and thirty rehabilitation-related recommendations were identified, mostly concentrated in the areas of cognition, emotion, and carer support. There were many strong interventions, with moderate- to high-quality evidence that could be easily introduced in routine practice. However, major limitations were found both in the quality of evidence and scope, especially in areas such as education and vocation, community and social life, and lifestyle modifications. DISCUSSION AND IMPLICATIONS Further rigorous research is needed to build quality evidence in dementia rehabilitation in general, and especially in neglected areas for rehabilitation. Future work should also focus on the development of CPGs for dementia rehabilitation. A multipronged approach is needed to achieve Universal Health Coverage for dementia rehabilitation.
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Affiliation(s)
- Yun-Hee Jeon
- Susan Wakil School of Nursing and Midwifery, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Luisa Krein
- Susan Wakil School of Nursing and Midwifery, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Claire M C O’Connor
- Centre for Positive Ageing, HammondCare, Sydney, Australia
- School of Population Health, University of New South Wales, Sydney, Australia
| | - Loren Mowszowski
- Brain and Mind Centre & School of Psychology, The University of Sydney, Sydney, Australia
| | - Shantel Duffy
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Katrin Seeher
- Department of Mental Health and Substance Use, World Health Organization, Geneva, Switzerland
| | - Alexandra Rauch
- Rehabilitation Programme, World Health Organization, Geneva, Switzerland
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Malesci R, Lombardi M, Abenante V, Fratestefano F, Del Vecchio V, Fetoni AR, Troisi J. A Systematic Review on Metabolomics Analysis in Hearing Impairment: Is It a Possible Tool in Understanding Auditory Pathologies? Int J Mol Sci 2023; 24:15188. [PMID: 37894867 PMCID: PMC10607298 DOI: 10.3390/ijms242015188] [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] [Received: 08/17/2023] [Revised: 09/27/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
With more than 466 million people affected, hearing loss represents the most common sensory pathology worldwide. Despite its widespread occurrence, much remains to be explored, particularly concerning the intricate pathogenic mechanisms underlying its diverse phenotypes. In this context, metabolomics emerges as a promising approach. Indeed, lying downstream from molecular biology's central dogma, the metabolome reflects both genetic traits and environmental influences. Furthermore, its dynamic nature facilitates well-defined changes during disease states, making metabolomic analysis a unique lens into the mechanisms underpinning various hearing impairment forms. Hence, these investigations may pave the way for improved diagnostic strategies, personalized interventions and targeted treatments, ultimately enhancing the clinical management of affected individuals. In this comprehensive review, we discuss findings from 20 original articles, including human and animal studies. Existing literature highlights specific metabolic changes associated with hearing loss and ototoxicity of certain compounds. Nevertheless, numerous critical issues have emerged from the study of the current state of the art, with the lack of standardization of methods, significant heterogeneity in the studies and often small sample sizes being the main limiting factors for the reliability of these findings. Therefore, these results should serve as a stepping stone for future research aimed at addressing the aforementioned challenges.
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Affiliation(s)
- Rita Malesci
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Martina Lombardi
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, 84084 Fisciano, Italy
- European Institute of Metabolomics (EIM) Foundation ETS, G. Puccini, 2, 84081 Baronissi, Italy
| | - Vera Abenante
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
| | - Federica Fratestefano
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
| | - Valeria Del Vecchio
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Anna Rita Fetoni
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Jacopo Troisi
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, 84084 Fisciano, Italy
- European Institute of Metabolomics (EIM) Foundation ETS, G. Puccini, 2, 84081 Baronissi, Italy
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
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Yoho SE, Barrett TS, Borrie SA. The Influence of Sensorineural Hearing Loss on the Relationship Between the Perception of Speech in Noise and Dysarthric Speech. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2023; 66:4025-4036. [PMID: 37652059 PMCID: PMC10713019 DOI: 10.1044/2023_jslhr-23-00115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/25/2023] [Accepted: 06/14/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE The ability to understand speech under adverse listening conditions is highly variable across listeners. Despite this, studies have found that listeners with normal hearing display consistency in their ability to perceive speech across different types of degraded speech, suggesting that, for at least these listeners, global skills may be involved in navigating the ambiguity in speech signals. However, there are substantial differences in the perceptual challenges faced by listeners with normal and impaired hearing. This study examines whether listeners with sensorineural hearing loss demonstrate the same type of consistency as normal-hearing listeners when processing neurotypical (i.e., control) speech that has been degraded by external noise and speech that is neurologically degraded such as dysarthria. METHOD Listeners with normal hearing (n = 31) and listeners with sensorineural hearing loss (n = 36) completed an intelligibility task with neurotypical speech in noise and with dysarthric speech in quiet. RESULTS Findings were consistent with previous work demonstrating a relationship between the ability to perceive neurotypical speech in noise and dysarthric speech for listeners with normal hearing, albeit at a higher intelligibility level than previously observed. This relationship was also observed for listeners with hearing loss, although listeners with more severe hearing losses performed better with dysarthric speech than with neurotypical speech in noise. CONCLUSIONS This study demonstrated a high level of consistency in intelligibility performance for listeners across two different types of degraded speech, even when those listeners were further challenged by the presence of sensorineural hearing loss. Clinical implications for both listeners with hearing loss and their communication partners with dysarthria are discussed.
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Affiliation(s)
- Sarah E. Yoho
- Department of Communicative Disorders and Deaf Education, Utah State University, Logan
- Department of Speech and Hearing Science, The Ohio State University, Columbus
| | | | - Stephanie A. Borrie
- Department of Communicative Disorders and Deaf Education, Utah State University, Logan
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11
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Zhang Y, Wang H, Wang L, Zhang J, Cao Y, Wan L, Wang C, Xin H, Ding H. Hearing aids utilization, effect factors, and its benefit in the association between hearing and cognition decline: A longitudinal follow-up in Shanghai, China. Exp Gerontol 2023; 181:112272. [PMID: 37597711 DOI: 10.1016/j.exger.2023.112272] [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: 06/01/2023] [Revised: 08/04/2023] [Accepted: 08/11/2023] [Indexed: 08/21/2023]
Abstract
OBJECTIVE To explore the rate and effect factors of hearing aids utilization in Chinese community elderly people, as well as the benefit role of hearing aids in the association of hearing loss and cognition decline. METHODS This study was designed based on a longitudinal 7-years follow-up conducted in Shanghai (China). Demographic characteristics, hearing level, hearing aids utilization and Activities of Daily Living (ADL) of participants were collected by Unified Needs Assessment Form for Elderly Care Questionnaire. Cognition function was assessed by Mini-mental State Examination (MMSE) scale. Multivariate logistic regression and linear regression were used for statistical analysis. RESULTS Hearing aids utilization rate in Chinese community elderly people is below 10 %. Participants with older age (≥80 years old), higher education (7-12 years and >12 years), who can manage money more independently were more likely to use hearing aids (P < 0.05). Whether hearing aids are used or not, hearing level is significantly associated with cognition in elderly people, but participants with hearing aids showed a slower cognitive decline speed. CONCLUSION Hearing aids utilization may slow down the cognition descent via assisting hearing in daily life, so strategies need to be concerned in order to protect hearing function in all elderly and improve the use of hearing aids in HL elderly.
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Affiliation(s)
- Yunwei Zhang
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China
| | - Hua Wang
- Siping Community Health Service Center of Yangpu District, Shanghai, PR China
| | - Lihua Wang
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, PR China
| | - Jing Zhang
- Jiangning Road Community Health Service Center of Jing'an District, Shanghai, PR China
| | - Yifan Cao
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China
| | - Lingshan Wan
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China
| | - Changying Wang
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China
| | - Hongyun Xin
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China
| | - Hansheng Ding
- Shanghai Health Development Research Center (Shanghai Medical Information Center), Shanghai, PR China.
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12
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Azeem A, Julleekeea A, Knight B, Sohail I, Bruyns-Haylett M, Sastre M. Hearing loss and its link to cognitive impairment and dementia. FRONTIERS IN DEMENTIA 2023; 2:1199319. [PMID: 39081997 PMCID: PMC11285555 DOI: 10.3389/frdem.2023.1199319] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/26/2023] [Indexed: 08/02/2024]
Abstract
Hearing loss is an important risk factor for the development of dementia, particularly Alzheimer's disease (AD). Mid-life hearing loss increases the risk of developing dementia by double any other single factor. However, given this strong connection between hearing loss and AD, the mechanisms responsible for this link are still unknown. Data from observational studies relating hearing loss and cognitive impairment, measured with standardized questionnaires, has shown a strong relationship between them. Similar findings have emerged from animal studies, showing that the induction of hearing loss via prolonged loud sound exposure or ear canal blocking, can impair cognitive abilities. Interestingly, patients with age-related hearing impairment exhibit increased phosphorylated tau in the cerebrospinal fluid, but no such relationship has been identified for amyloid-β. In addition, hearing loss predisposes to social isolation precipitating the development of dementia through a supposed reduction in cognitive load and processing requirements. Given this link between hearing loss and dementia, the question arises whether the restoration of hearing might mitigate against the onset or progress of AD. Indeed, there is a growing body of research that suggests that those who wear hearing aids for age-related hearing problems maintain better cognitive function over time than those who do not. These are compelling findings, as they suggest the use of hearing aids has the potential to be a cost-effective treatment for those with hearing loss both prior (for those at high risk for AD) and after the development of symptoms. This review aims to summarize the current theories that relate hearing loss and cognitive decline, present the key findings of animal studies, observational studies and summarize the gaps and limitations that need to be addressed in this topic. Through this, we suggest directions for future studies to tackle the lack of adequately randomized control trials in the field. This omission is responsible for the inability to provide a conclusive verdict on whether to use hearing interventions to target hearing-loss related cognitive decline.
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Affiliation(s)
- Abdul Azeem
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Arun Julleekeea
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Beth Knight
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Isha Sohail
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | | | - Magdalena Sastre
- Department of Brain Sciences, Imperial College London, London, United Kingdom
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Paciello F, Pisani A, Rinaudo M, Cocco S, Paludetti G, Fetoni AR, Grassi C. Noise-induced auditory damage affects hippocampus causing memory deficits in a model of early age-related hearing loss. Neurobiol Dis 2023; 178:106024. [PMID: 36724860 DOI: 10.1016/j.nbd.2023.106024] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 01/30/2023] Open
Abstract
Several studies identified noise-induced hearing loss (NIHL) as a risk factor for sensory aging and cognitive decline processes, including neurodegenerative diseases, such as dementia and age-related hearing loss (ARHL). Although the association between noise- and age-induced hearing impairment has been widely documented by epidemiological and experimental studies, the molecular mechanisms underlying this association are not fully understood as it is not known how these risk factors (aging and noise) can interact, affecting memory processes. We recently found that early noise exposure in an established animal model of ARHL (C57BL/6 mice) accelerates the onset of age-related cochlear dysfunctions. Here, we extended our previous data by investigating what happens in central brain structures (auditory cortex and hippocampus), to assess the relationship between hearing and memory impairment and the possible combined effect of noise and sensory aging on the cognitive domain. To this aim, we exposed juvenile C57BL/6 mice of 2 months of age to repeated noise sessions (60 min/day, pure tone of 100 dB SPL, 10 kHz, 10 consecutive days) and we monitored auditory threshold by measuring auditory brainstem responses (ABR), spatial working memory, by using the Y-maze test, and basal synaptic transmission by using ex vivo electrophysiological recordings, at different time points (1, 4 and 7 months after the onset of noise exposure, corresponding to 3, 6 and 9 months of age). We found that hearing loss, along with accelerated presbycusis onset, can induce persistent synaptic alterations in the auditory cortex. This was associated with decreased memory performance and oxidative-inflammatory injury in the hippocampus, the extra-auditory structure involved in memory processes. Collectively, our data confirm the critical relationship between auditory and memory circuits, suggesting that the combined detrimental effect of noise and sensory aging on hearing function can be considered a high-risk factor for both sensory and cognitive degenerative processes, given that early noise exposure accelerates presbycusis phenotype and induces hippocampal-dependent memory dysfunctions.
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Affiliation(s)
- Fabiola Paciello
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy; Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
| | - Anna Pisani
- Department of Head and Neck Surgery, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Marco Rinaudo
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy; Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
| | - Sara Cocco
- Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
| | - Gaetano Paludetti
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy; Department of Head and Neck Surgery, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Anna Rita Fetoni
- Department of Head and Neck Surgery, Università Cattolica del Sacro Cuore, Roma, Italy; Department of Neuroscience, Unit of Audiology, Università degli Studi di Napoli Federico II, Naples, Italy.
| | - Claudio Grassi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Roma, Italy; Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
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14
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Vascular Factors in Patients with Midlife Sensorineural Hearing Loss and the Progression to Mild Cognitive Impairment. Medicina (B Aires) 2023; 59:medicina59030481. [PMID: 36984482 PMCID: PMC10057859 DOI: 10.3390/medicina59030481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023] Open
Abstract
Background and Objectives: Midlife hearing loss (HL) has been considered as a major modifiable risk factor for a later-life progression to dementia. Our aim was to detect a link between precocious sensorineural hearing loss (SNHL) and mild cognitive impairment (MCI) and their association to putative risk factors for a common pathology. Materials and methods: In this study, a retrospective case-control study was carried out. A total of 112 patients were enrolled as following: 81 patients with bilateral SNHL and 31 subjects with normal hearing, whose ages ranged from 50 to 65 years. Both groups performed pure tone audiometry, a tinnitus handicap inventory (THI), Mini-Mental State examination (MMSE), and the Montreal Cognitive Assessment (MoCA), Hospital Anxiety and Depression Scale (HADS-A and HADS-D). Results: The mean age was 58 ± 5.2 in SNHL patients and 53.2 ± 4.8 in the control group. The mean pure tone average in the SNHL group was 40.2 ± 18.7 dB HL on the right side and 41.2 ± 17.2 dB HL on the left side, while in the control group it was 12.5 ± 2.8 dB HL on right side and 12.4 ± 3.1 dB HL on left side. About 64% of patients with SNHL exhibited comorbidities, and the most common condition was hypertension. Altered MoCA test scores were significantly related to the pure tone averages in patients with SNHL compared to the control group (p = 0.0004), while the differences in the HADS-A and HADS-D were not significant. Furthermore, a significant correlation was observed in SNHL patients between an altered MoCA test and hypercholesterolemia (p = 0.043). Conclusions: Hearing impairment and screening tests to detect MCI should be considered in the midlife in order to carry out strategies to prevent the progression to dementia. Hypertension and hypercholesterolemia are two risk factors in the development of endothelial dysfunction, oxidative stress, and vascular inflammation, and may represent the common pathology linking the inner ear and brain damage.
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15
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Maidment DW, Wallhagen MI, Dowd K, Mick P, Piker E, Spankovich C, Urry E. New horizons in holistic, person-centred health promotion for hearing healthcare. Age Ageing 2023; 52:7049630. [PMID: 36821645 PMCID: PMC9949576 DOI: 10.1093/ageing/afad020] [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: 10/10/2022] [Indexed: 02/24/2023] Open
Abstract
Over the course of a lifetime, the risk of experiencing multiple chronic conditions (multimorbidity) increases, necessitating complex healthcare regimens. Healthcare that manages these requirements in an integrated way has been shown to be more effective than services that address specific diseases individually. One such chronic condition that often accompanies ageing is hearing loss and related symptoms, such as tinnitus. Hearing loss is not only highly prevalent in older adults but is also a leading cause of disability. Accumulating evidence demonstrates an interplay between auditory function and other aspects of health. For example, poorer cardiometabolic health profiles have been shown to increase the risk of hearing loss, which has been attributed to microvascular disruptions and neural degeneration. Additionally, hearing loss itself is associated with significantly increased odds of falling and is a potentially modifiable risk factor for cognitive decline and dementia. Such evidence warrants consideration of new possibilities-a new horizon-for hearing care to develop a holistic, person-centred approach that promotes the overall health and wellbeing of the individual, as well as for audiology to be part of an interdisciplinary healthcare service. To achieve this holistic goal, audiologists and other hearing healthcare professionals should be aware of the range of conditions associated with hearing loss and be ready to make health promoting recommendations and referrals to the appropriate health practitioners. Likewise, healthcare professionals not trained in audiology should be mindful of their patients' hearing status, screening for hearing loss or referring them to a hearing specialist as required.
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Affiliation(s)
- David W Maidment
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | | | | | - Paul Mick
- Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Erin Piker
- Department of Communication Sciences and Disorders, College of Health and Behavioral Studies, James Madison University, Harrisonburg, VA, USA
| | - Christopher Spankovich
- Department of Otolaryngology - Head and Neck Surgery, University of Mississippi Medical Center, Jackson, MI, USA
| | - Emily Urry
- Research and Development, Sonova AG, Staefa, Switzerland
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16
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Paciello F, Ripoli C, Fetoni AR, Grassi C. Redox Imbalance as a Common Pathogenic Factor Linking Hearing Loss and Cognitive Decline. Antioxidants (Basel) 2023; 12:antiox12020332. [PMID: 36829891 PMCID: PMC9952092 DOI: 10.3390/antiox12020332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Experimental and clinical data suggest a tight link between hearing and cognitive functions under both physiological and pathological conditions. Indeed, hearing perception requires high-level cognitive processes, and its alterations have been considered a risk factor for cognitive decline. Thus, identifying common pathogenic determinants of hearing loss and neurodegenerative disease is challenging. Here, we focused on redox status imbalance as a possible common pathological mechanism linking hearing and cognitive dysfunctions. Oxidative stress plays a critical role in cochlear damage occurring during aging, as well as in that induced by exogenous factors, including noise. At the same time, increased oxidative stress in medio-temporal brain regions, including the hippocampus, is a hallmark of neurodegenerative disorders like Alzheimer's disease. As such, antioxidant therapy seems to be a promising approach to prevent and/or counteract both sensory and cognitive neurodegeneration. Here, we review experimental evidence suggesting that redox imbalance is a key pathogenetic factor underlying the association between sensorineural hearing loss and neurodegenerative diseases. A greater understanding of the pathophysiological mechanisms shared by these two diseased conditions will hopefully provide relevant information to develop innovative and effective therapeutic strategies.
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Affiliation(s)
- Fabiola Paciello
- Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
| | - Cristian Ripoli
- Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
- Correspondence: ; Tel.: +39-0630154966
| | - Anna Rita Fetoni
- Unit of Audiology, Department of Neuroscience, Università degli Studi di Napoli Federico II, 80138 Naples, Italy
| | - Claudio Grassi
- Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
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17
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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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18
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The aging mind: A complex challenge for research and practice. AGING BRAIN 2023; 3:100060. [PMID: 36911259 PMCID: PMC9997127 DOI: 10.1016/j.nbas.2022.100060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 12/10/2022] [Accepted: 12/10/2022] [Indexed: 12/24/2022] Open
Abstract
Cognitive decline as part of mental ageing is typically assessed with standardized tests; below-average performance in such tests is used as an indicator for pathological cognitive aging. In addition, morphological and functional changes in the brain are used as parameters for age-related pathological decline in cognitive abilities. However, there is no simple link between the trajectories of changes in cognition and morphological or functional changes in the brain. Furthermore, below-average test performance does not necessarily mean a significant impairment in everyday activities. It therefore appears crucial to record individual everyday tasks and their cognitive (and other) requirements in functional terms. This would also allow reliable assessment of the ecological validity of existing and insufficient cognitive skills. Understanding and dealing with the phenomena and consequences of mental aging does of course not only depend on cognition. Motivation and emotions as well personal meaning of life and life satisfaction play an equally important role. This means, however, that cognition represents only one, albeit important, aspect of mental aging. Furthermore, creating and development of proper assessment tools for functional cognition is important. In this contribution we would like to discuss some aspects that we consider relevant for a holistic view of the aging mind and promote a strengthening of a multidisciplinary approach with close cooperation between all basic and applied sciences involved in aging research, a quick translation of the research results into practice, and a close cooperation between all disciplines and professions who advise and support older people.
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Burkhardt P, Müller V, Meister H, Weglage A, Lang-Roth R, Walger M, Sandmann P. Age effects on cognitive functions and speech-in-noise processing: An event-related potential study with cochlear-implant users and normal-hearing listeners. Front Neurosci 2022; 16:1005859. [PMID: 36620447 PMCID: PMC9815545 DOI: 10.3389/fnins.2022.1005859] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/15/2022] [Indexed: 12/24/2022] Open
Abstract
A cochlear implant (CI) can partially restore hearing in individuals with profound sensorineural hearing loss. However, electrical hearing with a CI is limited and highly variable. The current study aimed to better understand the different factors contributing to this variability by examining how age affects cognitive functions and cortical speech processing in CI users. Electroencephalography (EEG) was applied while two groups of CI users (young and elderly; N = 13 each) and normal-hearing (NH) listeners (young and elderly; N = 13 each) performed an auditory sentence categorization task, including semantically correct and incorrect sentences presented either with or without background noise. Event-related potentials (ERPs) representing earlier, sensory-driven processes (N1-P2 complex to sentence onset) and later, cognitive-linguistic integration processes (N400 to semantically correct/incorrect sentence-final words) were compared between the different groups and speech conditions. The results revealed reduced amplitudes and prolonged latencies of auditory ERPs in CI users compared to NH listeners, both at earlier (N1, P2) and later processing stages (N400 effect). In addition to this hearing-group effect, CI users and NH listeners showed a comparable background-noise effect, as indicated by reduced hit rates and reduced (P2) and delayed (N1/P2) ERPs in conditions with background noise. Moreover, we observed an age effect in CI users and NH listeners, with young individuals showing improved specific cognitive functions (working memory capacity, cognitive flexibility and verbal learning/retrieval), reduced latencies (N1/P2), decreased N1 amplitudes and an increased N400 effect when compared to the elderly. In sum, our findings extend previous research by showing that the CI users' speech processing is impaired not only at earlier (sensory) but also at later (semantic integration) processing stages, both in conditions with and without background noise. Using objective ERP measures, our study provides further evidence of strong age effects on cortical speech processing, which can be observed in both the NH listeners and the CI users. We conclude that elderly individuals require more effortful processing at sensory stages of speech processing, which however seems to be at the cost of the limited resources available for the later semantic integration processes.
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Affiliation(s)
- Pauline Burkhardt
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany,*Correspondence: Pauline Burkhardt, ; orcid.org/0000-0001-9850-9881
| | - Verena Müller
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Hartmut Meister
- Jean-Uhrmacher-Institute for Clinical ENT-Research, University of Cologne, Cologne, Germany
| | - Anna Weglage
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Ruth Lang-Roth
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Martin Walger
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany,Jean-Uhrmacher-Institute for Clinical ENT-Research, University of Cologne, Cologne, Germany
| | - Pascale Sandmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
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20
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Schilling A, Krauss P. Tinnitus is associated with improved cognitive performance and speech perception-Can stochastic resonance explain? Front Aging Neurosci 2022; 14:1073149. [PMID: 36589535 PMCID: PMC9800600 DOI: 10.3389/fnagi.2022.1073149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Achim Schilling
- Neuroscience Lab, University Hospital Erlangen, Erlangen, Germany
- Cognitive Computational Neuroscience Group, University of Erlangen-Nurnberg, Erlangen, Germany
| | - Patrick Krauss
- Neuroscience Lab, University Hospital Erlangen, Erlangen, Germany
- Cognitive Computational Neuroscience Group, University of Erlangen-Nurnberg, Erlangen, Germany
- Linguistics Lab, University of Erlangen-Nurnberg, Erlangen, Germany
- Pattern Recognition Lab, University of Erlangen-Nurnberg, Erlangen, Germany
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21
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Gu H, Yao X, Diao C, Liu M, Kong W, Liu H, Zhao Y, Meng Z. Global cognitive function is associated with sex, educational level, occupation type, and speech recognition rate in older Chinese adults: a single-center, prospective, cross-sectional study. BMC Geriatr 2022; 22:947. [PMID: 36482356 PMCID: PMC9733133 DOI: 10.1186/s12877-022-03603-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 11/09/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The development of cognitive impairment may be delayed if its risk factors are identified and detected, if its developmental trend can be predicted, and if early intervention can be performed. This study primarily aimed to investigate the association between global cognitive function and hearing loss, educational level, and occupation type and to determine any differences in such associations according to sex among older Chinese adults. METHODS In this cross-sectional study, we prospectively recruited 219 individuals above 55 years old in an otolaryngology outpatient clinic who could write independently and had no severe vision impairment. Audiometric examinations included otoscopy, acoustic immittance, pure-tone audiometry, and speech audiometry for each ear. Cognitive function was evaluated by using the Chinese version of the Mini-Mental State Examination (MMSE). Multivariable linear regression analyses were performed to evaluate the relationship between variables and MMSE scores after adjusting for independent variables that were statistically significant in the univariable analyses. RESULTS We enrolled 219 individuals: 98 men (mean ± standard deviation age, 63.08 ± 6.64 years) and 121 women (62.64 ± 7.17 years). The overall MMSE scores of the normal hearing group and the mild, moderate, and severe-to-profound hearing loss groups were 24.00 (5.00), 24.00 (5.00), 23.00 (5.00), and 23.00 (13.00), respectively. MMSE scores were higher among participants with higher educational levels (p < 0.001) and were significantly correlated with occupation type (p < 0.001). MMSE scores were significantly higher in men than in women (p < 0.001). However, after the analysis of the five subdomains, significant differences were only observed for attention and calculation (p < 0.001) and language (p = 0.011). We further compared the distribution of educational levels between men and women by using the chi-square test; there was no significant difference in educational level between the sexes (p = 0.070). CONCLUSIONS We reported statistically significant relationships between global cognitive function and sex, educational level, and occupation type. Sex-specific strategies may be required to improve healthcare policies.
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Affiliation(s)
- Hailing Gu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Xinyi Yao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Cong Diao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Min Liu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Weili Kong
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Haotian Liu
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
| | - Yu Zhao
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Zhaoli Meng
- grid.412901.f0000 0004 1770 1022Department of Otolaryngology-Head and Neck Surgery, Hearing Center/Hearing and Speech Science Laboratory, West China Hospital of Sichuan University, 37 Guo Xue Lane, Chengdu, 610041 Sichuan People’s Republic of China
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22
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Zou M, Huang M, Zhang J, Chen R. Exploring the effects and mechanisms of organophosphorus pesticide exposure and hearing loss. Front Public Health 2022; 10:1001760. [PMID: 36438228 PMCID: PMC9692084 DOI: 10.3389/fpubh.2022.1001760] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
Many environmental factors, such as noise, chemicals, and heavy metals, are mostly produced by human activities and easily induce acquired hearing loss. Organophosphorus pesticides (OPs) constitute a large variety of chemicals and have high usage with potentiate damage to human health. Moreover, their metabolites also show a serious potential contamination of soil, water, and air, leading to a serious impact on people's health. Hearing loss affects 430 million people (5.5% of the global population), bringing a heavy burden to individual patients and their families and society. However, the potential risk of hearing damage by OPs has not been taken seriously. In this study, we summarized the effects of OPs on hearing loss from epidemiological population studies and animal experiments. Furthermore, the possible mechanisms of OP-induced hearing loss are elucidated from oxidative stress, DNA damage, and inflammatory response. Overall, this review provides an overview of OP exposure alone or with noise that leads to hearing loss in human and experimental animals.
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23
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Wang C, Qiu J, Li G, Wang J, Liu D, Chen L, Song X, Cui L, Sun Y. Application and prospect of quasi-targeted metabolomics in age-related hearing loss. Hear Res 2022; 424:108604. [PMID: 36116178 DOI: 10.1016/j.heares.2022.108604] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/28/2022] [Accepted: 09/03/2022] [Indexed: 11/04/2022]
Abstract
Age-related hearing loss (ARHL) is a common sensory deficit in the elderly, which seriously affects physical and mental health. Therefore, understanding its underlying molecular mechanisms and taking interventions to treat ARHL are urgently needed. In our study, cochlea of 4-week-old C57BL/6 mice as the Youth group (n = 6) and 48-week-old cochlea as the Old group (n = 6) were subjected to quasi-targeted metabolomics analysis by Ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). In total, 208 differential metabolites were identified in 12 cochlea samples, which highlighted the following discriminant compounds: tryptophan, piperidine, methionine, L-arginine, histamine, serotonin, acetylcholine, and 4-aminobutyric acid. Differentially expressed metabolites were identified which were involved in KEGG pathways related to the digestion and absorption of oxidative stress associated amino acids, Synaptic vesicle cycle of serotonin, Pantothenate and CoA Biosynthesis. These findings are a first step toward elucidating the pathophysiological pathways involved in the etiology of ARHL and provide the possibility to further explore the mechanisms of ARHL using metabolomic analysis.
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Affiliation(s)
- Chen Wang
- School of Clinical Medicine, Weifang Medical University, Baotong West Street 7166, Weifang, China; Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Jingjing Qiu
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Guangjin Li
- School of Clinical Medicine, Weifang Medical University, Baotong West Street 7166, Weifang, China; Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Junxin Wang
- School of Clinical Medicine, Weifang Medical University, Baotong West Street 7166, Weifang, China; Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Dawei Liu
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Liang Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Xicheng Song
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China
| | - Limei Cui
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China.
| | - Yan Sun
- Department of Otorhinolaryngology, Head and Neck Surgery, Yantai Yuhuangding Hospital, Qingdao University, 20 East Yuhuangding Road, Yantai, Shandong 264000, China; Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, 20 East Yuhuangding Road, Yantai, Shandong 264000, China.
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24
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Rönnberg J, Signoret C, Andin J, Holmer E. The cognitive hearing science perspective on perceiving, understanding, and remembering language: The ELU model. Front Psychol 2022; 13:967260. [PMID: 36118435 PMCID: PMC9477118 DOI: 10.3389/fpsyg.2022.967260] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
The review gives an introductory description of the successive development of data patterns based on comparisons between hearing-impaired and normal hearing participants’ speech understanding skills, later prompting the formulation of the Ease of Language Understanding (ELU) model. The model builds on the interaction between an input buffer (RAMBPHO, Rapid Automatic Multimodal Binding of PHOnology) and three memory systems: working memory (WM), semantic long-term memory (SLTM), and episodic long-term memory (ELTM). RAMBPHO input may either match or mismatch multimodal SLTM representations. Given a match, lexical access is accomplished rapidly and implicitly within approximately 100–400 ms. Given a mismatch, the prediction is that WM is engaged explicitly to repair the meaning of the input – in interaction with SLTM and ELTM – taking seconds rather than milliseconds. The multimodal and multilevel nature of representations held in WM and LTM are at the center of the review, being integral parts of the prediction and postdiction components of language understanding. Finally, some hypotheses based on a selective use-disuse of memory systems mechanism are described in relation to mild cognitive impairment and dementia. Alternative speech perception and WM models are evaluated, and recent developments and generalisations, ELU model tests, and boundaries are discussed.
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25
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Bachtiary B, Veraguth D, Roos N, Pfiffner F, Leiser D, Pica A, Walser M, von Felten S, Weber DC. Hearing Loss in Cancer Patients with Skull Base Tumors Undergoing Pencil Beam Scanning Proton Therapy: A Retrospective Cohort Study. Cancers (Basel) 2022; 14:cancers14163853. [PMID: 36010847 PMCID: PMC9405884 DOI: 10.3390/cancers14163853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/05/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
To assess the incidence and severity of changes in hearing threshold in patients undergoing high-dose pencil-beam-scanning proton therapy (PBS-PT). This retrospective cohort study included fifty-one patients (median 50 years (range, 13–68)) treated with PBS-PT for skull base tumors. No chemotherapy was delivered. Pure tone averages (PTAs)were determined before (baseline) and after PBS-PT as the average hearing thresholds at frequencies of 0.5, 1, 2, and 4 kHz. Hearing changes were calculated as PTA differences between pre-and post-PBS-PT. A linear mixed-effects model was used to assess the relationship between the PTA at the follow-up and the baseline, the cochlea radiation dose intensity, the increased age, and the years after PBS-PT. Included patients were treated for chordoma (n = 24), chondrosarcoma (n = 9), head and neck tumors (n = 9), or meningioma (n = 3), with a mean tumor dose of 71.1 Gy (RBE) (range, 52.0–77.8), and a mean dose of 37 Gy (RBE) (range, 0.0–72.7) was delivered to the cochleas. The median time to the first follow-up was 11 months (IQR, 5.5–33.7). The PTA increased from a median of 15 dB (IQR 10.0–25) at the baseline to 23.8 (IQR 11.3–46.3) at the first follow-up. In the linear mixed-effect model, the baseline PTA (estimate 0.80, 95%CI 0.64 to 0.96, p ≤ 0.001), patient’s age (0.30, 0.03 to 0.57, p = 0.029), follow-up time (2.07, 0.92 to 3.23, p ≤ 0.001), and mean cochlear dose in Gy (RBE) (0.34, 0.21 to 0.46, p ≤ 0.001) were all significantly associated with an increase in PTA at follow-up. The applied cochlear dose and baseline PTA, age, and time after treatment were significantly associated with hearing loss after proton therapy.
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Affiliation(s)
- Barbara Bachtiary
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, 5232 Villigen, Switzerland
- Correspondence: ; Tel.: +41-56-310-2319
| | - Dorothe Veraguth
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich, University of Zurich, 8091 Zurich, Switzerland
| | - Nicolaas Roos
- Faculty of Medicine, University of Zurich, 8006 Zurich, Switzerland
| | - Flurin Pfiffner
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich, University of Zurich, 8091 Zurich, Switzerland
| | - Dominic Leiser
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, 5232 Villigen, Switzerland
| | - Alessia Pica
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, 5232 Villigen, Switzerland
| | - Marc Walser
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, 5232 Villigen, Switzerland
| | - Stefanie von Felten
- Department of Biostatistics, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, 8001 Zurich, Switzerland
| | - Damien C. Weber
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, 5232 Villigen, Switzerland
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
- Department of Radiation Oncology, University Hospital of Zurich, University of Zurich, 8091 Zurich, Switzerland
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Paciello F, Zorzi V, Raspa M, Scavizzi F, Grassi C, Mammano F, Fetoni AR. Connexin 30 deletion exacerbates cochlear senescence and age-related hearing loss. Front Cell Dev Biol 2022; 10:950837. [PMID: 36016655 PMCID: PMC9395607 DOI: 10.3389/fcell.2022.950837] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Pathogenic mutations in the Gjb2 and Gjb6 genes, encoding connexin 26 (Cx26) and connexin 30 (Cx30), respectively, have been linked to the most frequent monogenic hearing impairment, nonsyndromic hearing loss, and deafness DFNB1. It is known that Cx26 plays an important role in auditory development, while the role of Cx30 in hearing remains controversial. Previous studies found that partial deletion of Cx26 can accelerate age-related hearing loss (ARHL), a multifactorial complex disorder, with both environmental and genetic factors contributing to the etiology of the disease. Here, we investigated the role of Cx30 in cochlear-aging processes using a transgenic mouse model with total deletion of Cx30 (Cx30 ΔΔ mice), in which Cx30 was removed without perturbing the surrounding sequences. We show that these mice are affected by exacerbated ARHL, with increased morphological cochlear damage, oxidative stress, inflammation, and vascular dysfunctions. Overall, our data demonstrate that Cx30 deletion can be considered a genetic risk factor for ARHL, making cochlear structures more susceptible to aging processes.
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Affiliation(s)
- Fabiola Paciello
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Veronica Zorzi
- CNR Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
| | - Marcello Raspa
- CNR Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
| | | | - Claudio Grassi
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Fabio Mammano
- CNR Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
- Department of Physics and Astronomy, University of Padova, Padova, Italy
- *Correspondence: Fabio Mammano, ; Anna Rita Fetoni,
| | - Anna Rita Fetoni
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
- Unit of Audiology, Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
- *Correspondence: Fabio Mammano, ; Anna Rita Fetoni,
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Savitska D, Hess M, Calis D, Marchetta P, Harasztosi C, Fink S, Eckert P, Ruth P, Rüttiger L, Knipper M, Singer W. Stress Affects Central Compensation of Neural Responses to Cochlear Synaptopathy in a cGMP-Dependent Way. Front Neurosci 2022; 16:864706. [PMID: 35968392 PMCID: PMC9372611 DOI: 10.3389/fnins.2022.864706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 06/16/2022] [Indexed: 11/13/2022] Open
Abstract
In light of the increasing evidence supporting a link between hearing loss and dementia, it is critical to gain a better understanding of the nature of this relationship. We have previously observed that following cochlear synaptopathy, the temporal auditory processing (e.g., auditory steady state responses, ASSRs), is sustained when reduced auditory input is centrally compensated. This central compensation process was linked to elevated hippocampal long-term potentiation (LTP). We further observed that, independently of age, central responsiveness to cochlear synaptopathy can differ, resulting in either a low or high capacity to compensate for the reduced auditory input. Lower central compensation resulted in poorer temporal auditory processing, reduced hippocampal LTP, and decreased recruitment of activity-dependent brain-derived neurotrophic factor (BDNF) expression in hippocampal regions (low compensators). Higher central compensation capacity resulted in better temporal auditory processing, higher LTP responses, and increased activity-dependent BDNF expression in hippocampal regions. Here, we aimed to identify modifying factors that are potentially responsible for these different central responses. Strikingly, a poorer central compensation capacity was linked to lower corticosterone levels in comparison to those of high compensators. High compensators responded to repeated placebo injections with elevated blood corticosterone levels, reduced auditory brainstem response (ABR) wave I amplitude, reduced inner hair cell (IHC) ribbon number, diminished temporal processing, reduced LTP responses, and decreased activity-dependent hippocampal BDNF expression. In contrast, the same stress exposure through injection did not elevate blood corticosterone levels in low compensators, nor did it reduce IHC ribbons, ABR wave I amplitude, ASSR, LTP, or BDNF expression as seen in high compensators. Interestingly, in high compensators, the stress-induced responses, such as a decline in ABR wave I amplitude, ASSR, LTP, and BDNF could be restored through the “memory-enhancing” drug phosphodiesterase 9A inhibitor (PDE9i). In contrast, the same treatment did not improve these aspects in low compensators. Thus, central compensation of age-dependent cochlear synaptopathy is a glucocorticoid and cyclic guanosine-monophosphate (cGMP)-dependent neuronal mechanism that fails upon a blunted stress response.
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Affiliation(s)
- Daria Savitska
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Morgan Hess
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Dila Calis
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Philine Marchetta
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Csaba Harasztosi
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Stefan Fink
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Philipp Eckert
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Peter Ruth
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Marlies Knipper
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
- *Correspondence: Marlies Knipper
| | - Wibke Singer
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
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Age-Related Hearing Loss: The Link between Inflammaging, Immunosenescence, and Gut Dysbiosis. Int J Mol Sci 2022; 23:ijms23137348. [PMID: 35806352 PMCID: PMC9266910 DOI: 10.3390/ijms23137348] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 12/12/2022] Open
Abstract
This article provides a theoretical overview of the association between age-related hearing loss (ARHL), immune system ageing (immunosenescence), and chronic inflammation. ARHL, or presbyacusis, is the most common sensory disability that significantly reduces the quality of life and has a high economic impact. This disorder is linked to genetic risk factors but is also influenced by a lifelong cumulative effect of environmental stressors, such as noise, otological diseases, or ototoxic drugs. Age-related hearing loss and other age-related disorders share common mechanisms which often converge on low-grade chronic inflammation known as “inflammaging”. Various stimuli can sustain inflammaging, including pathogens, cell debris, nutrients, and gut microbiota. As a result of ageing, the immune system can become defective, leading to the accumulation of unresolved inflammatory processes in the body. Gut microbiota plays a central role in inflammaging because it can release inflammatory mediators and crosstalk with other organ systems. A proinflammatory gut environment associated with ageing could result in a leaky gut and the translocation of bacterial metabolites and inflammatory mediators to distant organs via the systemic circulation. Here, we postulate that inflammaging, as a result of immunosenescence and gut dysbiosis, accelerates age-related cochlear degeneration, contributing to the development of ARHL. Age-dependent gut dysbiosis was included as a hypothetical link that should receive more attention in future studies.
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Zhang Y, Chen J, Zhang Y, Sun B, Liu Y. Using Auditory Characteristics to Select Hearing Aid Compression Speeds for Presbycusic Patients. Front Aging Neurosci 2022; 14:869338. [PMID: 35847672 PMCID: PMC9285002 DOI: 10.3389/fnagi.2022.869338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/20/2022] [Indexed: 11/23/2022] Open
Abstract
Objectives This study aimed to select the optimal hearing aid compression speeds (fast-acting and slow-acting) for presbycusic patients by using auditory characteristics including temporal modulation and speech-in-noise performance. Methods In total, 24 patients with unilateral or bilateral moderate sensorineural hearing loss who scored higher than 21 on the Montreal Cognitive Assessment (MoCA) test participated in this study. The electrocochleogram (ECochG) results, including summating potentials (SP) and action potentials (AP), were recorded. Subjects' temporal modulation thresholds and speech recognition at 4 individualized signal-to-noise ratios were measured under three conditions, namely, unaided, aided with fast-acting compression (FAC), and aided with slow-acting compression (SAC). Results The results of this study showed that modulation discrimination thresholds in the unaided (−8.14 dB) and aided SAC (−8.19 dB) conditions were better than the modulation thresholds in the FAC (−4.67 dB) conditions. The speech recognition threshold (SRT75%) for FAC (5.21 dB) did not differ significantly from SAC (3.39 dB) (p = 0.12). A decision tree analysis showed that the inclusion of the AP, unaided modulation thresholds, and unaided SRT75% may correctly identify the optimal compression speeds (FAC vs. SAC) for individual presbycusic patients with up to 90% accuracy. Conclusion Both modes of compression speeds improved a presbycusic patient's speech recognition ability in noise. The SAC hearing aids may better preserve the modulation thresholds than the FAC hearing aids. The measurement of AP, along with the unaided modulation thresholds and unaided SRT75%, may help guide the selection of optimal compression speeds for individual presbycusic patients.
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Affiliation(s)
- Yi Zhang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Chen
- School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Yanmei Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing, China
| | - Baoxuan Sun
- Widex Hearing Aid (Shanghai) Co., Ltd., Shanghai, China
| | - Yuhe Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- *Correspondence: Yuhe Liu
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Menze I, Mueller P, Mueller NG, Schmicker M. Age-related cognitive effects of the COVID-19 pandemic restrictions and associated mental health changes in Germans. Sci Rep 2022; 12:8172. [PMID: 35581297 PMCID: PMC9112263 DOI: 10.1038/s41598-022-11283-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 02/17/2022] [Indexed: 11/08/2022] Open
Abstract
Restrictive means to reduce the spread of the COVID-19 pandemic have not only imposed broad challenges on mental health but might also affect cognitive health. Here we asked how restriction-related changes influence cognitive performance and how age, perceived loneliness, depressiveness and affectedness by restrictions contribute to these effects. 51 Germans completed three assessments of an online based study during the first lockdown in Germany (April 2020), a month later, and during the beginning of the second lockdown (November 2020). Participants completed nine online cognitive tasks of the MyBrainTraining and online questionnaires about their perceived strain and impact on lifestyle factors by the situation (affectedness), perceived loneliness, depressiveness as well as subjective cognitive performance. The results suggested a possible negative impact of depressiveness and affectedness on objective cognitive performance within the course of the lockdown. The younger the participants, the more pronounced these effects were. Loneliness and depressiveness moreover contributed to a worse evaluation of subjective cognition. In addition, especially younger individuals reported increased distress. As important educational and social input has partly been scarce during this pandemic and mental health problems have increased, future research should also assess cognitive long-term consequences.
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Affiliation(s)
- Inga Menze
- German Center for Neurodegenerative Diseases (DZNE), Leipziger Str. 44, 39120, Magdeburg, Germany.
| | - Patrick Mueller
- German Center for Neurodegenerative Diseases (DZNE), Leipziger Str. 44, 39120, Magdeburg, Germany
- Medical Faculty, Otto-Von-Guericke University, Magdeburg, Germany
| | - Notger G Mueller
- German Center for Neurodegenerative Diseases (DZNE), Leipziger Str. 44, 39120, Magdeburg, Germany
- Medical Faculty, Otto-Von-Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
- Research Group Degenerative and Chronic Diseases, Movement, Faculty of Health Sciences Brandenburg, University of Potsdam, Potsdam, Germany
| | - Marlen Schmicker
- German Center for Neurodegenerative Diseases (DZNE), Leipziger Str. 44, 39120, Magdeburg, Germany
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31
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Powell DS, Oh ES, Reed NS, Lin FR, Deal JA. Hearing Loss and Cognition: What We Know and Where We Need to Go. Front Aging Neurosci 2022; 13:769405. [PMID: 35295208 PMCID: PMC8920093 DOI: 10.3389/fnagi.2021.769405] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/29/2021] [Indexed: 12/29/2022] Open
Abstract
Although a causal association remains to be determined, epidemiologic evidence suggests an association between hearing loss and increased risk of dementia. If we determine the association is causal, opportunity for targeted intervention for hearing loss may play a fundamental role in dementia prevention. In this discussion, we summarize current research on the association between hearing loss and dementia and review potential casual mechanisms behind the association (e.g., sensory-deprivation hypothesis, information-degradation hypothesis, common cause). We emphasize key areas of research which might best inform our investigation of this potential casual association. These selected research priorities include examination of the causal mechanism, measurement of co-existing hearing loss and cognitive impairment and determination of any bias in testing, potential for managing hearing loss for prevention of dementia and cognitive decline, or the potential to reduce dementia-related symptoms through the management of hearing loss. Addressing these research gaps and how results are then translated for clinical use may prove paramount for dementia prevention, management, and overall health of older adults.
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Affiliation(s)
- Danielle S Powell
- Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Esther S Oh
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Nicholas S Reed
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Otolaryngology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Frank R Lin
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Otolaryngology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Jennifer A Deal
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.,Department of Otolaryngology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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32
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Seol HY, Moon IJ. Hearables as a gateway to hearing health care: A review. Clin Exp Otorhinolaryngol 2022; 15:127-134. [PMID: 35249320 PMCID: PMC9149229 DOI: 10.21053/ceo.2021.01662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/19/2021] [Indexed: 11/26/2022] Open
Abstract
The market for hearing technology is evolving—with the emergence of hearables, it now extends beyond hearing aids and includes any ear-level devices with wireless connectivity (i.e., wireless earbuds). However, will this evolving marketplace bring forth opportunities or challenges to individuals’ hearing health care and the profession of audiology and otolaryngology? The debate has been ongoing. This study explores the wide spectrum of hearables available in the market and discusses the necessity of high-quality clinical evidence prior to the implementation of over-the-counter devices into clinical practice.
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Gao J, Chen J, Xu J, Liang S, Yi H. Middle Ear Surgeries for Chronic Otitis Media Improve Cognitive Functions and Quality of Life of Age-Related Hearing Loss Patients. Front Neurosci 2022; 16:786383. [PMID: 35250444 PMCID: PMC8891491 DOI: 10.3389/fnins.2022.786383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/03/2022] [Indexed: 12/02/2022] Open
Abstract
Age-related hearing loss (ARHL) may limit communication, which is closely associated with cognitive decline of the elderly and negatively affects their quality of life. In ARHL patients who suffer chronic otitis media (COM), hearing impairment may worsen and negatively affect the cognition and quality of life. It is currently unknown whether restoration of the conductive hearing in the mixed hearing loss through middle ear surgeries can improve both the cognitive function and quality of life of the ARHL patients. Therefore, in the present study, the ARHL patients were followed up for 6 months after middle ear surgeries for COM, and both the cognitive functions and quality of life of the patients were assessed using Montreal Cognitive Assessment and Glasgow Benefit Inventory. It was found that both the cognitive functions and quality of life were improved 6 months after middle ear surgeries. In conclusion, hearing recovery after middle ear surgeries could improve cognitive functions and quality of life of ARHL patients with COM, and surgical intervention is, hence, recommended for COM.
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Fetoni AR, Pisani A, Rolesi R, Paciello F, Viziano A, Moleti A, Sisto R, Troiani D, Paludetti G, Grassi C. Early Noise-Induced Hearing Loss Accelerates Presbycusis Altering Aging Processes in the Cochlea. Front Aging Neurosci 2022; 14:803973. [PMID: 35197842 PMCID: PMC8860087 DOI: 10.3389/fnagi.2022.803973] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/04/2022] [Indexed: 12/17/2022] Open
Abstract
Several studies identified hearing loss as a risk factor for aging-related processes, including neurodegenerative diseases, as dementia and age-related hearing loss (ARHL). Although the association between hearing impairment in midlife and ARHL has been widely documented by epidemiological and experimental studies, the molecular mechanisms underlying this association are not fully understood. In this study, we used an established animal model of ARHL (C57BL/6 mice) to evaluate if early noise-induced hearing loss (NIHL) could affect the onset or progression of age-related cochlear dysfunction. We found that hearing loss can exacerbate ARHL, damaging sensory-neural cochlear epithelium and causing synaptopathy. Moreover, we studied common pathological markers shared between hearing loss and ARHL, demonstrating that noise exposure can worsen/accelerate redox status imbalance [increase of reactive oxygen species (ROS) production, lipid peroxidation, and dysregulation of endogenous antioxidant response] and vascular dysfunction [increased expression of hypoxia-inducible factor-1alpha (HIF-1α) and vascular endothelial growth factor C (VEGFC)] in the cochlea. Unveiling the molecular mechanisms underlying the link between hearing loss and aging processes could be valuable to identify effective therapeutic strategies to limit the effect of environmental risk factors on age-related diseases.
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Affiliation(s)
- Anna Rita Fetoni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
- Università degli Studi di Napoli Federico II, Naples, Italy
| | - Anna Pisani
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Rolando Rolesi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Fabiola Paciello
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
- *Correspondence: Fabiola Paciello,
| | - Andrea Viziano
- Department of Physics, University of Rome Tor Vergata, Rome, Italy
| | - Arturo Moleti
- Department of Physics, University of Rome Tor Vergata, Rome, Italy
| | - Renata Sisto
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Italian Workers’ Compensation Authority (INAIL), Rome, Italy
| | - Diana Troiani
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gaetano Paludetti
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Claudio Grassi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
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Alvarado JC, Fuentes-Santamaría V, Juiz JM. Frailty Syndrome and Oxidative Stress as Possible Links Between Age-Related Hearing Loss and Alzheimer’s Disease. Front Neurosci 2022; 15:816300. [PMID: 35115905 PMCID: PMC8804094 DOI: 10.3389/fnins.2021.816300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 12/29/2021] [Indexed: 12/26/2022] Open
Abstract
As it is well known, a worldwide improvement in life expectancy has taken place. This has brought an increase in chronic pathologies associated with aging. Cardiovascular, musculoskeletal, psychiatric, and neurodegenerative conditions are common in elderly subjects. As far as neurodegenerative diseases are concerned dementias and particularly, Alzheimer’s disease (AD) occupy a central epidemiological position given their high prevalence and their profound negative impact on the quality of life and life expectancy. The amyloid cascade hypothesis partly explains the immediate cause of AD. However, limited therapeutical success based on this hypothesis suggests more complex remote mechanisms underlying its genesis and development. For instance, the strong association of AD with another irreversible neurodegenerative pathology, without curative treatment and complex etiology such as presbycusis, reaffirms the intricate nature of the etiopathogenesis of AD. Recently, oxidative stress and frailty syndrome have been proposed, independently, as key factors underlying the onset and/or development of AD and presbycusis. Therefore, the present review summarizes recent findings about the etiology of the above-mentioned neurodegenerative diseases, providing a critical view of the possible interplay among oxidative stress, frailty syndrome, AD and presbycusis, that may help to unravel the common mechanisms shared by both pathologies. This knowledge would help to design new possible therapeutic strategies that in turn, will improve the quality of life of these patients.
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Knipper M, Singer W, Schwabe K, Hagberg GE, Li Hegner Y, Rüttiger L, Braun C, Land R. Disturbed Balance of Inhibitory Signaling Links Hearing Loss and Cognition. Front Neural Circuits 2022; 15:785603. [PMID: 35069123 PMCID: PMC8770933 DOI: 10.3389/fncir.2021.785603] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/08/2021] [Indexed: 12/19/2022] Open
Abstract
Neuronal hyperexcitability in the central auditory pathway linked to reduced inhibitory activity is associated with numerous forms of hearing loss, including noise damage, age-dependent hearing loss, and deafness, as well as tinnitus or auditory processing deficits in autism spectrum disorder (ASD). In most cases, the reduced central inhibitory activity and the accompanying hyperexcitability are interpreted as an active compensatory response to the absence of synaptic activity, linked to increased central neural gain control (increased output activity relative to reduced input). We here suggest that hyperexcitability also could be related to an immaturity or impairment of tonic inhibitory strength that typically develops in an activity-dependent process in the ascending auditory pathway with auditory experience. In these cases, high-SR auditory nerve fibers, which are critical for the shortest latencies and lowest sound thresholds, may have either not matured (possibly in congenital deafness or autism) or are dysfunctional (possibly after sudden, stressful auditory trauma or age-dependent hearing loss linked with cognitive decline). Fast auditory processing deficits can occur despite maintained basal hearing. In that case, tonic inhibitory strength is reduced in ascending auditory nuclei, and fast inhibitory parvalbumin positive interneuron (PV-IN) dendrites are diminished in auditory and frontal brain regions. This leads to deficits in central neural gain control linked to hippocampal LTP/LTD deficiencies, cognitive deficits, and unbalanced extra-hypothalamic stress control. Under these conditions, a diminished inhibitory strength may weaken local neuronal coupling to homeostatic vascular responses required for the metabolic support of auditory adjustment processes. We emphasize the need to distinguish these two states of excitatory/inhibitory imbalance in hearing disorders: (i) Under conditions of preserved fast auditory processing and sustained tonic inhibitory strength, an excitatory/inhibitory imbalance following auditory deprivation can maintain precise hearing through a memory linked, transient disinhibition that leads to enhanced spiking fidelity (central neural gain⇑) (ii) Under conditions of critically diminished fast auditory processing and reduced tonic inhibitory strength, hyperexcitability can be part of an increased synchronization over a broader frequency range, linked to reduced spiking reliability (central neural gain⇓). This latter stage mutually reinforces diminished metabolic support for auditory adjustment processes, increasing the risks for canonical dementia syndromes.
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Affiliation(s)
- Marlies Knipper
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Center (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
- *Correspondence: Marlies Knipper,
| | - Wibke Singer
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Center (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Kerstin Schwabe
- Experimental Neurosurgery, Department of Neurosurgery, Hannover Medical School, Hanover, Germany
| | - Gisela E. Hagberg
- Department of Biomedical Magnetic Resonance, University Hospital Tübingen (UKT), Tübingen, Germany
- High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Tübingen, Germany
| | - Yiwen Li Hegner
- MEG Center, University of Tübingen, Tübingen, Germany
- Center of Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Center (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Christoph Braun
- MEG Center, University of Tübingen, Tübingen, Germany
- Center of Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Rüdiger Land
- Department of Experimental Otology, Institute for Audioneurotechnology, Hannover Medical School, Hanover, Germany
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Xing C, Chen YC, Shang S, Xu JJ, Chen H, Yin X, Wu Y, Zheng JX. Abnormal Static and Dynamic Functional Network Connectivity in Patients With Presbycusis. Front Aging Neurosci 2022; 13:774901. [PMID: 35069176 PMCID: PMC8766420 DOI: 10.3389/fnagi.2021.774901] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/06/2021] [Indexed: 11/17/2022] Open
Abstract
Aim: This study aimed to investigate abnormal static and dynamic functional network connectivity (FNC) and its association with cognitive function in patients with presbycusis. Methods: In total, 60 patients with presbycusis and 60 age-, sex-, and education-matched healthy controls (HCs) underwent resting-state functional MRI (rs-fMRI) and cognitive assessments. Group independent component analysis (ICA) was carried out on the rs-fMRI data, and eight resting-state networks (RSNs) were identified. Static and dynamic FNCs (sFNC and dFNC) were then constructed to evaluate differences in RSN connectivity between the patients with presbycusis and the HCs. Furthermore, the correlations between these differences and cognitive scores were analyzed. Results: Patients with presbycusis had differences in sFNC compared with HCs, mainly reflected in decreased sFNC in the default mode network (DMN)-left frontoparietal network (LFPN) and attention network (AN)-cerebellum network (CN) pairs, but they had increased sFNC in the auditory network (AUN) between DMN domains. The decreased sFNC in the DMN-LFPN pair was negatively correlated with their TMT-B score (r = –0.441, p = 0.002). Patients with presbycusis exhibited aberrant dFNCs in State 2 and decreased dFNCs between the CN and AN and the visual network (VN). Moreover, the presbycusis group had a shorter mean dwell time (MDT) and fraction time (FT) in State 3 (p = 0.0027; p = 0.0031, respectively). Conclusion: This study highlighted differences in static and dynamic functional connectivity in patients with presbycusis and suggested that FNC may serve as an important biomarker of cognitive performance since abnormal alterations can better track cognitive impairment in presbycusis.
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Affiliation(s)
- Chunhua Xing
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yu-Chen Chen
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Song’an Shang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jin-Jing Xu
- Department of Otolaryngology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Huiyou Chen
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xindao Yin
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yuanqing Wu
- Department of Otolaryngology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- Yuanqing Wu,
| | - Jin-Xia Zheng
- Department of Radiology, Nanjing Maternity and Child Health Care Hospital, Women’s Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Jin-Xia Zheng,
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Strutt PA, Barnier AJ, Savage G, Picard G, Kochan NA, Sachdev P, Draper B, Brodaty H. Hearing loss, cognition, and risk of neurocognitive disorder: evidence from a longitudinal cohort study of older adult Australians. NEUROPSYCHOLOGY, DEVELOPMENT, AND COGNITION. SECTION B, AGING, NEUROPSYCHOLOGY AND COGNITION 2022; 29:121-138. [PMID: 33371769 DOI: 10.1080/13825585.2020.1857328] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Addressing midlife hearing loss could prevent up to 9% of new cases of dementia, the highest of any potentially modifiable risk factor identified in the 2017 commissioned report in The Lancet. In Australia, hearing loss is the second-most common chronic health condition in older people, affecting 74% of people aged over 70. Estimates indicate that people with severe hearing loss are up to 5-times more likely to develop dementia, but these estimates vary between studies due to methodological limitations. Using data from the Sydney Memory and Aging Study, in which 1,037 Australian men and women aged between 70 and 90 years were enrolled and completed biennial assessments from 2005-2017, investigations between hearing loss and baseline cognitive performance as well as longitudinal risk of neurocognitive disorder were undertaken. Individuals who reported moderate-to-severe hearing difficulties had poorer cognitive performances in the domains of Attention/Processing Speed and Visuospatial Ability, and on an overall index of Global Cognition, and had a 1.5-times greater risk for the neurocognitive disorder during 6-years' follow-up. Hearing loss independently predicted risk for MCI but not dementia. The presence of hearing loss is an important consideration for neuropsychological case formulation in older adults with cognitive impairment. Hearing loss may increase cognitive load, resulting in observable cognitive impairment on neuropsychological testing. Individuals with hearing loss who demonstrate impairment in non-amnestic domains may experience benefits from the provision of hearing devices; This study provides support for a randomized control trial of hearing devices for improvement of cognitive function in this group.
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Affiliation(s)
- Paul A Strutt
- Department of Cognitive Science, Macquarie University, Sydney, Australia.,Centre for Ageing, Cognition, and Wellbeing, Macquarie University, Sydney, Australia
| | - Amanda J Barnier
- Department of Cognitive Science, Macquarie University, Sydney, Australia.,Centre for Ageing, Cognition, and Wellbeing, Macquarie University, Sydney, Australia
| | - Greg Savage
- Centre for Ageing, Cognition, and Wellbeing, Macquarie University, Sydney, Australia.,Department of Psychology, Macquarie University, Sydney, Australia
| | - Gabrielle Picard
- Centre for Ageing, Cognition, and Wellbeing, Macquarie University, Sydney, Australia.,Department of Psychology, Macquarie University, Sydney, Australia
| | - Nicole A Kochan
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - Perminder Sachdev
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia.,Neuropsychiatric Institute, The Prince of Wales Hospital, Randwick, Australia
| | - Brian Draper
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - Henry Brodaty
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
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Ooi TC, Ishak WS, Sharif R, Shahar S, Rajab NF, Singh DKA, Mukari SZMS. Multidimensional Risk Factors of Age-Related Hearing Loss Among Malaysian Community-Dwelling Older Adults. Clin Interv Aging 2021; 16:2033-2046. [PMID: 34949916 PMCID: PMC8688829 DOI: 10.2147/cia.s340432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Purpose This study evaluates the prevalence of and the multidimensional risk factors associated with age-related hearing loss (ARHL) among community-dwelling older adults in Malaysia. Patients and Methods A total of 253 participants aged 60 years and above participated in this cross-sectional study. The participants were subjected to pure tone audiometric assessment. The hearing threshold was calculated for the better ear and classified into pure-tone average (PTA) for the octave frequencies from 0.5 to 4 kHz and high-frequency pure-tone average (HFA) for the octave from 2 to 8kHz. Then, the risk factors associated with PTA hearing loss (HL) and HFAHL were identified by using multivariate logistic regression analysis. Results The prevalence of ARHL based on PTA and HFA among the community-dwelling older adults was 75.5% and 83.0%, respectively. Following multifactorial adjustments, being older (OR: 1.239; 95% CI: 1.062–1.445), having higher waist circumference (OR: 1.158; 95% CI: 1.015–1.322), lower intake of niacin (OR: 0.909; 95% CI: 0.831–0.988) and potassium (OR: 0.998; 95% CI: 0.996–1.000), and scoring lower in RAVLT T5 (OR: 0.905; 95% CI: 0.838–0.978) were identified as the risk factors of PTAHL. Meanwhile, being older (OR: 1.117; 95% CI: 1.003–1.244), higher intake of carbohydrate (OR: 1.018; 95% CI: 1.006–1.030), lower intake of potassium (OR: 0.998; 95% CI: 0.997–0.999), and lower scores on the RAVLT T5 (OR: 0.922; 95% CI: 0.874–0.973) were associated with increased risk of having HFAHL. Conclusion Increasing age, having higher waist circumference, lower intake of niacin and potassium, higher intake of carbohydrates and having lower RAVLT T5 score were associated with increased risk of ARHL. Modifying these risk factors may be beneficial in preventive and management strategies of ARHL among older persons.
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Affiliation(s)
- Theng Choon Ooi
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Wan Syafira Ishak
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Razinah Sharif
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Suzana Shahar
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Nor Fadilah Rajab
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
| | - Devinder Kaur Ajit Singh
- Centre for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia
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Saak SK, Hildebrandt A, Kollmeier B, Buhl M. Predicting Common Audiological Functional Parameters (CAFPAs) as Interpretable Intermediate Representation in a Clinical Decision-Support System for Audiology. Front Digit Health 2021; 2:596433. [PMID: 34713064 PMCID: PMC8521966 DOI: 10.3389/fdgth.2020.596433] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/26/2020] [Indexed: 12/25/2022] Open
Abstract
The application of machine learning for the development of clinical decision-support systems in audiology provides the potential to improve the objectivity and precision of clinical experts' diagnostic decisions. However, for successful clinical application, such a tool needs to be accurate, as well as accepted and trusted by physicians. In the field of audiology, large amounts of patients' data are being measured, but these are distributed over local clinical databases and are heterogeneous with respect to the applied assessment tools. For the purpose of integrating across different databases, the Common Audiological Functional Parameters (CAFPAs) were recently established as abstract representations of the contained audiological information describing relevant functional aspects of the human auditory system. As an intermediate layer in a clinical decision-support system for audiology, the CAFPAs aim at maintaining interpretability to the potential users. Thus far, the CAFPAs were derived by experts from audiological measures. For designing a clinical decision-support system, in a next step the CAFPAs need to be automatically derived from available data of individual patients. Therefore, the present study aims at predicting the expert generated CAFPA labels using three different machine learning models, namely the lasso regression, elastic nets, and random forests. Furthermore, the importance of different audiological measures for the prediction of specific CAFPAs is examined and interpreted. The trained models are then used to predict CAFPAs for unlabeled data not seen by experts. Prediction of unlabeled cases is evaluated by means of model-based clustering methods. Results indicate an adequate prediction of the ten distinct CAFPAs. All models perform comparably and turn out to be suitable choices for the prediction of CAFPAs. They also generalize well to unlabeled data. Additionally, the extracted relevant features are plausible for the respective CAFPAs, facilitating interpretability of the predictions. Based on the trained models, a prototype of a clinical decision-support system in audiology can be implemented and extended towards clinical databases in the future.
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Affiliation(s)
- Samira K Saak
- Department of Psychology, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Cluster of Excellence Hearing4all, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Andrea Hildebrandt
- Department of Psychology, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Cluster of Excellence Hearing4all, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Birger Kollmeier
- Cluster of Excellence Hearing4all, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Medizinische Physik, Medizinische Physik, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,HörTech gGmbH, Oldenburg, Germany.,Hearing, Speech and Audio Technology, Fraunhofer Institute for Digital Media Technology (IDMT), Oldenburg, Germany
| | - Mareike Buhl
- Cluster of Excellence Hearing4all, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Medizinische Physik, Medizinische Physik, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
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41
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Paciello F, Rinaudo M, Longo V, Cocco S, Conforto G, Pisani A, Podda MV, Fetoni AR, Paludetti G, Grassi C. Auditory sensory deprivation induced by noise exposure exacerbates cognitive decline in a mouse model of Alzheimer's disease. eLife 2021; 10:70908. [PMID: 34699347 PMCID: PMC8547960 DOI: 10.7554/elife.70908] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 10/15/2021] [Indexed: 12/18/2022] Open
Abstract
Although association between hearing impairment and dementia has been widely documented by epidemiological studies, the role of auditory sensory deprivation in cognitive decline remains to be fully understood. To address this issue we investigated the impact of hearing loss on the onset and time-course of cognitive decline in an animal model of Alzheimer's disease (AD), that is the 3×Tg-AD mice and the underlying mechanisms. We found that hearing loss induced by noise exposure in the 3×Tg-AD mice before the phenotype is manifested caused persistent synaptic and morphological alterations in the auditory cortex. This was associated with earlier hippocampal dysfunction, increased tau phosphorylation, neuroinflammation, and redox imbalance, along with anticipated memory deficits compared to the expected time-course of the neurodegenerative phenotype. Our data suggest that a mouse model of AD is more vulnerable to central damage induced by hearing loss and shows reduced ability to counteract noise-induced detrimental effects, which accelerates the neurodegenerative disease onset.
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Affiliation(s)
- Fabiola Paciello
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Marco Rinaudo
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Valentina Longo
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Sara Cocco
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Giulia Conforto
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Anna Pisani
- Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maria Vittoria Podda
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Anna Rita Fetoni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gaetano Paludetti
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Department of Otolaryngology Head and Neck Surgery, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Claudio Grassi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
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Pike A, Moodie S, Parsons K, Griffin A, Smith-Young J, Young TL, Mills L, Barrett M, Rowe L, Parsons M, Kielley H, Fleming M. "Something is just not right with my hearing": early experiences of adults living with hearing loss. Int J Audiol 2021; 61:787-797. [PMID: 34612131 DOI: 10.1080/14992027.2021.1983656] [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: 10/20/2022]
Abstract
OBJECTIVE To understand the psychosocial process of how adults experience hearing loss; specifically, their readiness to accept that they may have hearing loss, and the challenges and coping strategies associated with it. DESIGN A grounded theory methodology guided the research. A patient-orientated research approach informed the study. Thirty-nine individual interviews and six focus groups were completed. STUDY SAMPLE Participants included 68 individuals aged 50 years and older with self-reported hearing loss living in Newfoundland and Labrador. RESULTS The theoretical construct, 'Realising that something is just not quite right with my hearing' captured individuals' experiences as they gradually awakened to the fact that they had hearing loss. Three categories describe the process: (1) Rationalising suspicions, (2) Managing the invisible and (3) Reaching a turning point. CONCLUSIONS Many individuals do not recognise hearing loss in its early stages, although they may be already experiencing its negative effects. It is important to identify motivators to engage individuals as early as possible in their hearing health. Taking a proactive approach to hearing health can help mitigate the potential negative outcomes of hearing loss.
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Affiliation(s)
- April Pike
- Faculty of Nursing, Memorial University of Newfoundland, St. John's, Canada
| | - Sheila Moodie
- National Centre for Audiology, University of Western Ontario, London, Canada
| | - Karen Parsons
- Faculty of Nursing, Memorial University of Newfoundland, St. John's, Canada
| | - Anne Griffin
- Faculty of Medicine, Audiologist, Memorial University of Newfoundland, St. John's, Canada
| | - Joanne Smith-Young
- Faculty of Nursing, Memorial University of Newfoundland, St. John's, Canada
| | - Terry-Lynn Young
- Faculty of Medicine, Memorial University of Newfoundland, Discipline of Genetics, St. John's, Canada
| | - Leon Mills
- Executive Director, Canadian Hard of Hearing Association-NL, St. John's, Canada
| | - Myrtle Barrett
- NL Chapter, Canadian Hard of Hearing Association-NL, St. John's, Canada
| | - Leanna Rowe
- NL Chapter, Canadian Hard of Hearing Association-NL, St. John's, Canada
| | - Marie Parsons
- NL Chapter, Canadian Hard of Hearing Association-NL, St. John's, Canada
| | | | - Michael Fleming
- NL Chapter, Canadian Hard of Hearing Association-NL, St. John's, Canada
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Huang L, Zhang Y, Wang Y, Lan Y. Relationship Between Chronic Noise Exposure, Cognitive Impairment, and Degenerative Dementia: Update on the Experimental and Epidemiological Evidence and Prospects for Further Research. J Alzheimers Dis 2021; 79:1409-1427. [PMID: 33459723 DOI: 10.3233/jad-201037] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Degenerative dementia, of which Alzheimer's disease is the most common form, is characterized by the gradual deterioration of cognitive function. The events that trigger and promote degenerative dementia are not clear, and treatment options are limited. Experimental and epidemiological studies have revealed chronic noise exposure (CNE) as a potential risk factor for cognitive impairment and degenerative dementia. Experimental studies have indicated that long-term exposure to noise might accelerate cognitive dysfunction, amyloid-β deposition, and tau hyperphosphorylation in different brain regions such as the hippocampus and cortex. Epidemiological studies are increasingly examining the possible association between external noise exposure and dementia. In this review, we sought to construct a comprehensive summary of the relationship between CNE, cognitive dysfunction, and degenerative dementia. We also present the limitations of existing evidence as a guide regarding important prospects for future research.
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Affiliation(s)
- Lei Huang
- Department of Environmental Health and Occupational Medicine, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, P.R. China.,Department of Occupational Hazard Assessment, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Yang Zhang
- Department of Periodical Press and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan, P.R. China.,Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Yongwei Wang
- Department of Occupational Hazard Assessment, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Yajia Lan
- Department of Environmental Health and Occupational Medicine, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, P.R. China
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44
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Feijó MEPH, Haas P, Hillesheim D, Xavier AJ, Quialheiro A, d'Ávila Freitas MI, de Paiva KM. Self-Reported Hearing Loss and Associated Factors in Older Adults at a Memory Clinic. Am J Audiol 2021; 30:497-504. [PMID: 34106746 DOI: 10.1044/2021_aja-20-00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Purpose The prevalence of dementia has increased in recent years and, along with hearing loss, can negatively impact the health of older adults. The purpose of this retrospective cross-sectional study was to establish self-reported hearing loss and associated factors in older adults at a memory clinic. Method Researchers conducted a retrospective cross-sectional study on factors associated with self-reported hearing loss (i.e., lifestyle, general health, cognition, functional capacity). Data were taken from medical records of older adults (≥ 60 years old) who received care between 2017 and 2018 at a memory clinic located at the Southern Santa Catarina University in Brazil. Analysis included the Pearson chi-squared test and logistic regression, estimation of the crude and adjusted odds ratios (OR), with respective confidence intervals of 95%. Results Researchers analyzed the medical records of 257 older adults and verified a prevalence of 13.2% of these adults with self-reported hearing loss. There was a higher prevalence of the outcome (i.e., self-reported hearing loss) in older adults who reported tinnitus (35.2%), those with mild cognitive impairment (14.7%), and those who were sedentary (19.2%). After adjustment for confusion factors, tinnitus (OR = 4.63; p = .019) and sedentarism (OR = 2.89; p = .029) were still associated with the outcome. Conclusions Tinnitus and sedentarism were associated with hearing loss in older adults receiving care at a memory clinic. As a public health issue, presbycusis needs to be included in the health planning and health promotion agendas, with effective control, prevention, and treatment measures.
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Affiliation(s)
| | - Patrícia Haas
- Department of Speech, Language and Hearing Sciences, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Danúbia Hillesheim
- Postgraduate Program in Public Health, Federal University of Santa Catarina, Florianópolis, Brazil
| | - André Junqueira Xavier
- Postgraduate Program in Public Health, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Anna Quialheiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Maria Isabel d'Ávila Freitas
- Department of Speech, Language and Hearing Sciences, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Karina Mary de Paiva
- Department of Speech, Language and Hearing Sciences, Federal University of Santa Catarina, Florianópolis, Brazil
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Cochlear Synaptopathy: A Primary Factor Affecting Speech Recognition Performance in Presbycusis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6667531. [PMID: 34409106 PMCID: PMC8367534 DOI: 10.1155/2021/6667531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 05/11/2021] [Accepted: 07/27/2021] [Indexed: 11/23/2022]
Abstract
The results of recent animal studies have suggested that cochlear synaptopathy may be an important factor involved in presbycusis. Therefore, here, we aimed to examine whether cochlear synaptopathy frequently exists in patients with presbycusis and to describe the effect of cochlear synaptopathy on speech recognition in noise. Based on the medical history and an audiological examination, 94 elderly patients with bilateral, symmetrical, sensorineural hearing loss were diagnosed as presbycusis. An electrocochleogram, auditory brainstem responses, auditory cortical evoked potentials, and speech audiometry were recorded to access the function of the auditory pathway. First, 65 ears with hearing levels of 41-50 dB HL were grouped based on the summating potential/action potential (SP/AP) ratio, and the amplitudes of AP and SP were compared between the two resulting groups. Second, 188 ears were divided into two groups: the normal SP/AP and abnormal SP/AP groups. The speech recognition abilities in the two groups were compared. Finally, the relationship between abnormal electrocochleogram and poor speech recognition (signal-to-noise ratio loss ≥7 dB) was analyzed in 188 ears. The results of the present study showed: (1) a remarkable reduction in the action potential amplitude was observed in patients with abnormal SP/AP ratios; this suggests that cochlear synaptopathy was involved in presbycusis. (2) There was a large proportion of patients with poor speech recognition in the abnormal SP/AP group. Furthermore, a larger number of cases with abnormal SP/AP ratios were confirmed among patients with presbycusis and poor speech recognition. We concluded that cochlear synaptopathy is not uncommon among elderly individuals who have hearing ability deficits, and it may have a more pronounced effect on ears with declining auditory performance in noisy environments.
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Li S, Cheng C, Lu L, Ma X, Zhang X, Li A, Chen J, Qian X, Gao X. Hearing Loss in Neurological Disorders. Front Cell Dev Biol 2021; 9:716300. [PMID: 34458270 PMCID: PMC8385440 DOI: 10.3389/fcell.2021.716300] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/23/2021] [Indexed: 12/11/2022] Open
Abstract
Sensorineural hearing loss (SNHL) affects approximately 466 million people worldwide, which is projected to reach 900 million by 2050. Its histological characteristics are lesions in cochlear hair cells, supporting cells, and auditory nerve endings. Neurological disorders cover a wide range of diseases affecting the nervous system, including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), autism spectrum disorder (ASD), etc. Many studies have revealed that neurological disorders manifest with hearing loss, in addition to typical nervous symptoms. The prevalence, manifestations, and neuropathological mechanisms underlying vary among different diseases. In this review, we discuss the relevant literature, from clinical trials to research mice models, to provide an overview of auditory dysfunctions in the most common neurological disorders, particularly those associated with hearing loss, and to explain their underlying pathological and molecular mechanisms.
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Affiliation(s)
- Siyu Li
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Cheng Cheng
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Ling Lu
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xiaofeng Ma
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
| | - Xiaoli Zhang
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Ao Li
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Jie Chen
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xiaoyun Qian
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xia Gao
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
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Fetoni AR, Di Cesare T, Settimi S, Sergi B, Rossi G, Malesci R, Marra C, Paludetti G, De Corso E. The evaluation of global cognitive and emotional status of older patients with chronic tinnitus. Brain Behav 2021; 11:e02074. [PMID: 34288570 PMCID: PMC8413806 DOI: 10.1002/brb3.2074] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/26/2021] [Accepted: 02/05/2021] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Tinnitus is a common symptom largely impactful on quality of life, especially in the elderly. Our aim was to evaluate the efficacy of self-administered screening tests to correlate the severity of subjective perception of tinnitus with emotional disorders and the overall cognitive status. METHODS Patients aged ≥ 55 years with chronic tinnitus were recruited and submitted to a complete audiological evaluation; Tinnitus Handicap inventory (THI); Hospital Anxiety and Depression Scale (HADS-A and HADS-D) and Mini-Mental State Examination (MMSE). Demographic and audiological features of patients with and without cognitive impairment (MMSE score cut-off of 24/30) were analyzed in order to reveal the relationship among tinnitus, emotional disorders, and cognitive dysfunction. RESULTS 102 patients were recruited (mean age: 70.4 ± 9.6). THI score was directly related to HADS-A score (r = .63) HADS-D score (r = .66), whereas there was no relationship between tinnitus severity and MMSE (r = .13). CI and n-CI groups did not differ in the characteristics of tinnitus (p > .05), however, hearing threshold (p = .049) and anxious depressive traits measured with HADS-A (p = .044) and HADS-D (p = .016) were significantly higher in the group with cognitive impairment. Furthermore, age ≥ 75 years (p = .002, OR = 13.8), female sex (p = .032; OR = 6.5), severe hearing loss (p = .036; OR = 2.3), and anxiety (p = .029; OR = 9.2) resulted risk factors for CI. Therefore, in CI group MMSE score was inversely related to age (r = -.84). CONCLUSIONS Cognitive impairment and psychiatric discomfort should be considered in tinnitus patients, related to increasing age, female sex, and severe hearing loss. Thus, self-administered questionnaires can be useful in addressing clinical approach.
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Affiliation(s)
- Anna Rita Fetoni
- Institute of Otolaryngology, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | | | | | - Bruno Sergi
- Institute of Otolaryngology, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | | | - Rita Malesci
- Audiology and Vestibology Unit, Neuroscience Department, Federico II University Naples, Naples, Italy
| | - Camillo Marra
- Università Cattolica del Sacro Cuore, Rome, Italy.,Memory Clinic, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy
| | - Gaetano Paludetti
- Institute of Otolaryngology, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | - Eugenio De Corso
- Institute of Otolaryngology, Fondazione Policlinico Agostino Gemelli, IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
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Kasemsiri P, Yimtae K, Thanawirattananit P, Israsena P, Noymai A, Laohasiriwong S, Vatanasapt P, Siripaopradith P, Kingkaew P. Effectiveness of a programable body-worn digital hearing aid for older adults in a developing country: a randomized controlled trial with a cross-over design. BMC Geriatr 2021; 21:437. [PMID: 34301203 PMCID: PMC8299624 DOI: 10.1186/s12877-021-02325-4] [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: 02/06/2021] [Accepted: 06/06/2021] [Indexed: 11/25/2022] Open
Abstract
Background Hearing aids are important assistive devices for hearing rehabilitation. However, the cost of commonly available commercial hearing aids is often higher than the average monthly income of individuals in some developing countries. Therefore, there is a great need to locally produce cheaper, but still effective, hearing aids. The Thai-produced P02 hearing aid was designed to meet this requirement. Objective To compare the effectiveness of the P02 hearing aid with two common commercially available digital hearing aids (Clip-II™ and Concerto Basic®). Methods A prospective, randomized controlled trial with a cross-over design was conducted from October 2012 to September 2014 in a rural Thai community. There were 73 participants (mean age of 73.7 ± 7.3 years) included in this study with moderate to severe hearing loss who were assessed for hearing aid performance, including probe microphone real-ear measurement, functional gain, speech discrimination, and participant satisfaction with the overall quality of perceived sound and the design of the device. Results There were no statistically significant differences in functional gain or speech discrimination among the three hearing aids evaluated (p-value > 0.05). Real-ear measurements of the three hearing aids met the target curve in 93% of the participants. The best real-ear measurement of the hearing aid following the target curve was significantly lower than that of Clip-II™ and Concerto Basic® (p-value < 0.05) at high frequency. However, participants rated the overall quality of sound higher for the P02 hearing aid than that of Clip-II™ but lower than that of Concerto Basic® (p-value > 0.05). Participants revealed that the P02 hearing aid provided the highest satisfaction ratings for design and user-friendliness with statistical significance (p-value < 0.05). Conclusion The P02 hearing aid was an effective device for older Thai adults with hearing disabilities. Additionally, its modern design, simplicity of use, and ease of maintenance were attractive to this group of individuals. These benefits support the rehabilitation potential of this hearing aid model and its positive impact on the quality of life of older adults in developing countries. Trial registration This study was registered under Clinicaltrial.govNCT01902914. Date of registration: July 18, 2013.
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Affiliation(s)
- Pornthep Kasemsiri
- Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen Ear Hearing and Balance Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Kwanchanok Yimtae
- Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Khon Kaen Ear Hearing and Balance Research Group, Khon Kaen University, Khon Kaen, Thailand.
| | - Panida Thanawirattananit
- Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen Ear Hearing and Balance Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Pasin Israsena
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Prathumthani, Thailand
| | - Anukool Noymai
- National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency (NSTDA), Prathumthani, Thailand
| | - Supawan Laohasiriwong
- Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen Ear Hearing and Balance Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Patravoot Vatanasapt
- Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen Ear Hearing and Balance Research Group, Khon Kaen University, Khon Kaen, Thailand
| | | | - Pritaporn Kingkaew
- Health Intervention and Technology Assessment Program (HITAP), Ministry of Public Health, Nonthaburi, Thailand
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Hearing difficulty is linked to Alzheimer's disease by common genetic vulnerability, not shared genetic architecture. NPJ Aging Mech Dis 2021; 7:17. [PMID: 34294723 PMCID: PMC8298411 DOI: 10.1038/s41514-021-00069-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 04/02/2021] [Indexed: 02/07/2023] Open
Abstract
Age-related hearing loss was recently established as the largest modifiable risk factor for Alzheimer's disease (AD), however, the reasons for this link remain unclear. We investigate shared underlying genetic associations using results from recent large genome-wide association studies (GWAS) on adult hearing difficulty and AD. Genetic correlation and Mendelian randomization (MR) analysis do not support a genetic correlation between the disorders, but suggest a direct causal link from AD genetic risk to hearing difficulty, driven by APOE. Systematic MR analyses on the effect of other traits revealed shared effects of glutamine, gamma-glutamylglutamine, and citrate levels on reduced risk of both hearing difficulty and AD. In addition, pathway analysis on GWAS risk variants suggests shared function in neuronal signalling pathways as well as etiology of diabetes and cardiovascular disease. However, after multiple testing corrections, neither analysis led to statistically significant associations. Altogether, our genetic-driven analysis suggests hearing difficulty and AD are linked by a shared vulnerability in molecular pathways rather than by a shared genetic architecture.
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Yue T, Chen Y, Zheng Q, Xu Z, Wang W, Ni G. Screening Tools and Assessment Methods of Cognitive Decline Associated With Age-Related Hearing Loss: A Review. Front Aging Neurosci 2021; 13:677090. [PMID: 34335227 PMCID: PMC8316923 DOI: 10.3389/fnagi.2021.677090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 06/24/2021] [Indexed: 12/13/2022] Open
Abstract
Strong links between hearing and cognitive function have been confirmed by a growing number of cross-sectional and longitudinal studies. Seniors with age-related hearing loss (ARHL) have a significantly higher cognitive impairment incidence than those with normal hearing. The correlation mechanism between ARHL and cognitive decline is not fully elucidated to date. However, auditory intervention for patients with ARHL may reduce the risk of cognitive decline, as early cognitive screening may improve related treatment strategies. Currently, clinical audiology examinations rarely include cognitive screening tests, partly due to the lack of objective quantitative indicators with high sensitivity and specificity. Questionnaires are currently widely used as a cognitive screening tool, but the subject's performance may be negatively affected by hearing loss. Numerous electroencephalogram (EEG) and magnetic resonance imaging (MRI) studies analyzed brain structure and function changes in patients with ARHL. These objective electrophysiological tools can be employed to reveal the association mechanism between auditory and cognitive functions, which may also find biological markers to be more extensively applied in assessing the progression towards cognitive decline and observing the effects of rehabilitation training for patients with ARHL. In this study, we reviewed clinical manifestations, pathological changes, and causes of ARHL and discussed their cognitive function effects. Specifically, we focused on current cognitive screening tools and assessment methods and analyzed their limitations and potential integration.
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Affiliation(s)
- Tao Yue
- Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China
- Tianjin International Engineering Institute, Tianjin University, Tianjin, China
| | - Yu Chen
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- Department of Otorhinolaryngology Head and Neck Surgery, Tianjin First Central Hospital, Tianjin, China
| | - Qi Zheng
- Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China
| | - Zihao Xu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Wei Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Tianjin First Central Hospital, Tianjin, China
| | - Guangjian Ni
- Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
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