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Park JH, Sahbaz BD, Pekhale K, Chu X, Okur MN, Grati M, Isgrig K, Chien W, Chrysostomou E, Sullivan L, Croteau DL, Manor U, Bohr VA. Early-Onset Hearing Loss in Mouse Models of Alzheimer's Disease and Increased DNA Damage in the Cochlea. AGING BIOLOGY 2024; 1:20240025. [PMID: 38500536 PMCID: PMC10948084 DOI: 10.59368/agingbio.20240025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
There is considerable interest in whether sensory deficiency is associated with the development of Alzheimer's disease (AD). Notably, the relationship between hearing impairment and AD is of high relevance but still poorly understood. In this study, we found early-onset hearing loss in two AD mouse models, 3xTgAD and 3xTgAD/Polβ+/-. The 3xTgAD/Polβ+/- mouse is DNA repair deficient and has more humanized AD features than the 3xTgAD. Both AD mouse models showed increased auditory brainstem response (ABR) thresholds between 16 and 32 kHz at 4 weeks of age, much earlier than any AD cognitive and behavioral changes. The ABR thresholds were significantly higher in 3xTgAD/Polβ+/- mice than in 3xTgAD mice at 16 kHz, and distortion product otoacoustic emission signals were reduced, indicating that DNA damage may be a factor underlying early hearing impairment in AD. Poly ADP-ribosylation and protein expression levels of DNA damage markers increased significantly in the cochlea of the AD mice but not in the adjacent auditory cortex. Phosphoglycerate mutase 2 levels and the number of synaptic ribbons in the presynaptic zones of inner hair cells were decreased in the cochlea of the AD mice. Furthermore, the activity of sirtuin 3 was downregulated in the cochlea of these mice, indicative of impaired mitochondrial function. Taken together, these findings provide new insights into potential mechanisms for hearing dysfunction in AD and suggest that DNA damage in the cochlea might contribute to the development of early hearing loss in AD.
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Affiliation(s)
- Jae-Hyeon Park
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Burcin Duan Sahbaz
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Komal Pekhale
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Xixia Chu
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Mustafa N. Okur
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Mhamed Grati
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - Kevin Isgrig
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - Wade Chien
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Elena Chrysostomou
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Lauren Sullivan
- Department of Cell & Developmental Biology School of Biological Sciences University of California, San Diego, La Jolla, CA, USA
| | - Deborah L. Croteau
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
- Computational Biology & Genomics Core, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Uri Manor
- Department of Cell & Developmental Biology School of Biological Sciences University of California, San Diego, La Jolla, CA, USA
| | - Vilhelm A. Bohr
- DNA repair Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
- Danish Center for Healthy Aging, University of Copenhagen, Copenhagen N, Denmark
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Amizadeh M, Farahani S, Afsharmanesh J, Sharifi H, Fani Molky F. The Prevalence of Central Auditory Processing Disorder in Elementary School Students of Kerman, Iran. IRANIAN JOURNAL OF CHILD NEUROLOGY 2024; 18:71-80. [PMID: 38375129 PMCID: PMC10874509 DOI: 10.22037/ijcn.v17i1.33821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 06/01/2022] [Indexed: 02/21/2024]
Abstract
Objectives This study aimed to determine the prevalence of central auditory processing disorder (CAPD) in elementary school students in Kerman, Iran, during 2018-2019. Materials & Methods This cross-sectional study was conducted on 1369 elementary school students in Kerman. These students were selected by cluster sampling from different areas of Kerman and then screened using the Buffalo Model Questionnaire (BMQ). Based on the data obtained from the questionnaire, normal children were excluded from the study. Then, children with suspected central auditory processing disorder (CAPD) underwent ear exams and were excluded from the study in case of abnormal results in the tympanic membrane examination (rapture-effusion). The remaining subjects underwent peripheral audiometry evaluation, and children with abnormal audiometry were excluded from the study. Finally, the remaining children with suspicious screening results, a normal examination, and normal audiometry underwent a specific test to detect Central auditory processing disorder. Data analysis was carried out using SPSS software. Results One thousand three hundred sixty-nine primary school students with a mean age of 9.15 ±2.63 years enrolled in this study. 52%% of students were male. 8.03% of them had CAPD. A statistically significant relationship was found between the prevalence of CAPD and gender (P<0.001), place of residence (P<0.001), history of middle ear inflammation (P<0.001) and history of head injury. Conclusion The quality of life of these students with CAPD can be improved via timely recognition of CAPD and the provision of appropriate preventive and therapeutic facilities.
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Affiliation(s)
- Maryam Amizadeh
- Neurology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Saeid Farahani
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
| | - Jila Afsharmanesh
- Neurology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Sharifi
- Neurology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Fatemeh Fani Molky
- Neurology Research Center, Kerman University of Medical Sciences, Kerman, Iran
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Großmann W. Listening with an Ageing Brain - a Cognitive Challenge. Laryngorhinootologie 2023; 102:S12-S34. [PMID: 37130528 PMCID: PMC10184676 DOI: 10.1055/a-1973-3038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hearing impairment has been recently identified as a major modifiable risk factor for cognitive decline in later life and has been becoming of increasing scientific interest. Sensory and cognitive decline are connected by complex bottom-up and top-down processes, a sharp distinction between sensation, perception, and cognition is impossible. This review provides a comprehensive overview on the effects of healthy and pathological aging on auditory as well as cognitive functioning on speech perception and comprehension, as well as specific auditory deficits in the 2 most common neurodegenerative diseases in old age: Alzheimer disease and Parkinson syndrome. Hypotheses linking hearing loss to cognitive decline are discussed, and current knowledge on the effect of hearing rehabilitation on cognitive functioning is presented. This article provides an overview of the complex relationship between hearing and cognition in old age.
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Affiliation(s)
- Wilma Großmann
- Universitätsmedizin Rostock, Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde,Kopf- und Halschirurgie "Otto Körner"
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Wang C, Wang Z, Xie B, Shi X, Yang P, Liu L, Qu T, Qin Q, Xing Y, Zhu W, Teipel SJ, Jia J, Zhao G, Li L, Tang Y. Binaural processing deficit and cognitive impairment in Alzheimer's disease. Alzheimers Dement 2021; 18:1085-1099. [PMID: 34569690 DOI: 10.1002/alz.12464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/07/2021] [Accepted: 08/05/2021] [Indexed: 01/08/2023]
Abstract
Speech comprehension in noisy environments depends on central auditory functions, which are vulnerable in Alzheimer's disease (AD). Binaural processing exploits two ear sounds to optimally process degraded sound information; its characteristics are poorly understood in AD. We studied behavioral and electrophysiological alterations in binaural processing among 121 participants (AD = 27; amnestic mild cognitive impairment [aMCI] = 33; subjective cognitive decline [SCD] = 30; cognitively normal [CN] = 31). We observed impairment of binaural processing in AD and aMCI, and detected a U-shaped curve change in phase synchrony (declining from CN to SCD and to aMCI, but increasing from aMCI to AD). This improvement in phase synchrony accompanying more severe cognitive stages could reflect neural adaptation for binaural processing. Moreover, increased phase synchrony is associated with worse memory during the stages when neural adaptation apparently occurs. These findings support a hypothesis that neural adaptation for binaural processing deficit may exacerbate cognitive impairment, which could help identify biomarkers and therapeutic targets in AD.
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Affiliation(s)
- Changming Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Zhibin Wang
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Beijia Xie
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Xinrui Shi
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Pengcheng Yang
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China.,Speech and Hearing Research Center, Peking University, Beijing, China
| | - Lei Liu
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China.,Speech and Hearing Research Center, Peking University, Beijing, China
| | - Tianshu Qu
- Speech and Hearing Research Center, Peking University, Beijing, China.,Key Laboratory on Machine Perception (Ministry of Education), Peking University, Beijing, China
| | - Qi Qin
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Yi Xing
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China.,Key Laboratory of Neurodegenerative Diseases, Ministry of Education of the People's Republic of China, Beijing, China
| | - Wei Zhu
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Stefan J Teipel
- Department of Psychosomatic Medicine, University Medicine Rostock, Rostock, Germany.,DZNE, German Center for Neurodegenerative Diseases, Rostock, Germany
| | - Jianping Jia
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China.,Key Laboratory of Neurodegenerative Diseases, Ministry of Education of the People's Republic of China, Beijing, China.,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Geriatric Cognitive Disorders, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Guoguang Zhao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China
| | - Liang Li
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China.,Speech and Hearing Research Center, Peking University, Beijing, China.,Key Laboratory on Machine Perception (Ministry of Education), Peking University, Beijing, China.,Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - Yi Tang
- Innovation Center for Neurological Disorders, Department of Neurology, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, Beijing, China.,Key Laboratory of Neurodegenerative Diseases, Ministry of Education of the People's Republic of China, Beijing, China
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5
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Effects of aging on event-related potentials to single-cycle binaural beats and diotic amplitude modulation of a tone. Brain Res 2020; 1740:146849. [PMID: 32330517 DOI: 10.1016/j.brainres.2020.146849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 04/08/2020] [Accepted: 04/20/2020] [Indexed: 11/24/2022]
Abstract
Aim of the study is to determine whether the auditory processing of temporal fine structure (TFS) is affected with normal aging, even in the presence of normal audiometric hearing and fine cognitive state; and, if it is, to see whether a comparable effect is also observed in the processing of a diotic change in sound envelope. The event-related potentials (ERPs) to binaural beats (BBs), which are the responses of the binaural mechanisms processing TFS of a sound, and the ERPs to diotic amplitude modulation (AM) stimuli, which are the responses of the monaural mechanisms processing the changes in its envelope, were recorded from thirteen young university students and ten senior but active university professors, all with normal hearing in low frequencies. To obtain directly the specific BB responses without confounding monaural frequency change-evoked responses, we used single-cycle BB stimuli with temporary sub-threshold frequency shifts. BBs of a 250-Hz tone and diotic AM of the same tone with similar perceptual salience were presented with 2-second stimulus onset asynchrony. The N1 components of the ERPs to both stimuli displayed notable age-dependent changes in their scalp topography and significant amplitude reduction and latency prolongation in the elderly. These amplitude and latency changes were at similar rates for the two stimulus types, implying that the auditory TFS and envelope processing mechanisms are proportionally affected by physiological aging. These results may serve as control data in future studies investigating the effect of aging-associated cognitive pathologies on auditory TFS processing.
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Jayakody DMP, Tarawneh HY, Menegola HK, Yiannos JM, Friedland PL, Wilson WJ, Martins RN, Sohrabi HR. Systematic review protocol for assessing central auditory functions of Alzheimer's disease and its preclinical stages. BMJ Open 2020; 10:e033342. [PMID: 32571854 PMCID: PMC7311001 DOI: 10.1136/bmjopen-2019-033342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 05/06/2020] [Accepted: 05/12/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION A number of studies have reported an association between peripheral hearing impairment, central auditory processing and Alzheimer's disease (AD) and its preclinical stages. Both peripheral hearing impairment and central auditory processing disorders are observed many years prior to the clinical manifestation of AD symptoms, hence, providing a long window of opportunity to investigate potential interventions against neurodegenerative processes. This paper outlines the protocol for a systematic review of studies examining the central auditory processing functions in AD and its preclinical stages, investigated through behavioural (clinical assessments that require active participation) central auditory processing tests. METHODS AND ANALYSIS We will use the keywords and Medical Subject Heading terms to search the following electronic databases: MEDLINE, PsychINFO, PubMed, Scopus, EMBASE and CINAHL Plus. Studies including assessments of central auditory function in adults diagnosed with dementia, AD and its preclinical stages that were published before 8 May 2019 will be reviewed. This review protocol will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols guidelines. Data analysis and search results will be reported in the full review. This manuscript has designed the protocols for a systematic review that will identify the behavioural clinical central auditory processing measures that are sensitive to the changes in auditory function in adults with AD and its preclinical stages. Such assessments may subsequently help to design studies to examine the potential impact of hearing and communication rehabilitation of individuals at risk of AD. ETHICS AND DISSEMINATION Ethical approval is not required as this manuscript only reports the protocols for conducting a systematic review as primary data will only be reviewed and not be collected. The results of this systematic review will be disseminated through publication and in scientific conferences. PROSPERO REGISTRATION NUMBER CRD42017078272.
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Affiliation(s)
- Dona M P Jayakody
- Ear Sciences Centre- Faculty of Medical & Health Sciences, University of Western Australia, Crawley, Western Australia, Australia
- Ear Science Institute Australia, Subiaco, Western Australia, Australia
| | - Hadeel Y Tarawneh
- Ear Sciences Centre- Faculty of Medical & Health Sciences, University of Western Australia, Crawley, Western Australia, Australia
- Ear Science Institute Australia, Subiaco, Western Australia, Australia
- School of Human Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | - Holly K Menegola
- Ear Sciences Centre- Faculty of Medical & Health Sciences, University of Western Australia, Crawley, Western Australia, Australia
- Ear Science Institute Australia, Subiaco, Western Australia, Australia
| | - Jessica M Yiannos
- Ear Sciences Centre- Faculty of Medical & Health Sciences, University of Western Australia, Crawley, Western Australia, Australia
- Ear Science Institute Australia, Subiaco, Western Australia, Australia
| | - Peter L Friedland
- Ear Sciences Centre- Faculty of Medical & Health Sciences, University of Western Australia, Crawley, Western Australia, Australia
- Department of Otolaryngology Head Neck Skull Base Surgery, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
- School of Medicine, University of Notre Dame Australia, Fremantle, Western Australia, Australia
| | - Wayne J Wilson
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Ralph N Martins
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Hamid R Sohrabi
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, New South Wales, Australia
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia, Australia
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7
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Hearing loss is an early biomarker in APP/PS1 Alzheimer's disease mice. Neurosci Lett 2019; 717:134705. [PMID: 31870800 DOI: 10.1016/j.neulet.2019.134705] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/12/2019] [Accepted: 12/19/2019] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease characterized by a progressive loss of memory and cognitive decline. Over the last decade, it has been found that defects in sensory systems could be highly associated with AD. Hearing is an important neural sense. However, little is known about hearing functional changes in AD. In this study, APP/PS1 AD mice (Jackson Lab: Stack No. 004462) were used. Hearing function was assessed by auditory brainstem response (ABR), distortion product otoacoustic emission (DPOAE), and cochlear microphonics (CM) recordings. Wild-type (WT) littermates served as control. We found that APP/PS1 AD mice measured as ABR threshold had hearing loss. The hearing loss appeared at high frequency as early as 2 months old, prior to the reported occurrence of spatial learning deficit at 6-7 months of age in this AD mouse model. The hearing loss was progressive and extended from high frequency to low frequency. At 3-4 months old, the hearing loss appeared in the whole-frequency range. Moreover, the wave IV and V in the super-threshold ABR were eliminated, indicating substantial impairment in inferior colliculus, nuclei of lateral lemniscus, and medial geniculate body in the upper brainstem. DPOAE in APP/PS1 AD mice was also reduced. However, there was no reduction in CM in APP/PS1 mice. These data demonstrate that unlike age-related hearing loss APP/PS1 AD mice have early onset of hearing loss. These data also suggest that hearing function testing could provide a simple, sensitive, non-invasive screen-tool for early detecting AD and localizing lesion.
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Sardone R, Battista P, Panza F, Lozupone M, Griseta C, Castellana F, Capozzo R, Ruccia M, Resta E, Seripa D, Logroscino G, Quaranta N. The Age-Related Central Auditory Processing Disorder: Silent Impairment of the Cognitive Ear. Front Neurosci 2019; 13:619. [PMID: 31258467 PMCID: PMC6587609 DOI: 10.3389/fnins.2019.00619] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 05/29/2019] [Indexed: 01/09/2023] Open
Abstract
Age-related hearing loss (ARHL), also called presbycusis, is a progressive disorder affecting hearing functions and among the elderly has been recognized as the third most frequent condition. Among ARHL components, the age-related central auditory processing disorder (CAPD) refers to changes in the auditory network, negatively impacting auditory perception and/or the speech communication performance. The relationship between auditory-perception and speech communication difficulties in age-related CAPD is difficult to establish, mainly because many older subjects have concomitant peripheral ARHL and age-related cognitive changes. In the last two decades, the association between cognitive impairment and ARHL has received great attention. Peripheral ARHL has recently been defined as the modifiable risk factor with the greatest impact on the development of dementia. Even if very few studies have analyzed the relationship between cognitive decline and age-related CAPD, a strong association was highlighted. Therefore, age-related CAPD could be a specific process related to neurodegeneration. Since these two disorders can be concomitant, drawing causal inferences is difficult. The assumption that ARHL, particularly age-related CAPD, may increase the risk of cognitive impairment in the elderly remains unchallenged. This review aims to summarize the evidence of associations between age-related CAPD and cognitive disorders and to define the diagnostic procedure of CAPD in the elderly. Finally, we highlight the importance of tailoring the rehabilitation strategy to this relationship. Future longitudinal studies with larger sample sizes and the use of adequate assessment tools that can disentangle cognitive dysfunction from sensory impairments are warranted.
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Affiliation(s)
- Rodolfo Sardone
- Unit of Epidemiological Research on Aging “Great Age Study,” National Institute of Gastroenterology-Research Hospital, IRCCS “S. De Bellis,” Bari, Italy
| | - Petronilla Battista
- Istituti Clinici Scientifici Maugeri I.R.C.C.S., Institute of Cassano Murge, Bari, Italy
| | - Francesco Panza
- Unit of Epidemiological Research on Aging “Great Age Study,” National Institute of Gastroenterology-Research Hospital, IRCCS “S. De Bellis,” Bari, Italy
- Geriatric Unit, Fondazione IRCCS “Casa Sollievo della Sofferenza,” Foggia, Italy
| | - Madia Lozupone
- Geriatric Unit, Fondazione IRCCS “Casa Sollievo della Sofferenza,” Foggia, Italy
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Chiara Griseta
- Unit of Epidemiological Research on Aging “Great Age Study,” National Institute of Gastroenterology-Research Hospital, IRCCS “S. De Bellis,” Bari, Italy
| | - Fabio Castellana
- Unit of Epidemiological Research on Aging “Great Age Study,” National Institute of Gastroenterology-Research Hospital, IRCCS “S. De Bellis,” Bari, Italy
| | - Rosa Capozzo
- Department of Clinical Research in Neurology, Center for Neurodegenerative Diseases and the Aging Brain, University of Bari Aldo Moro, “Pia Fondazione Cardinale G. Panico,” Tricase, Italy
| | - Maria Ruccia
- Istituti Clinici Scientifici Maugeri I.R.C.C.S., Institute of Cassano Murge, Bari, Italy
| | - Emanuela Resta
- Department of Cardiac, Thoracic, and Vascular Science, Institute of Respiratory Disease, University of Bari Aldo Moro, Bari, Italy
- Translational Medicine and Management of Health Systems, University of Foggia, Foggia, Italy
| | - Davide Seripa
- Geriatric Unit, Fondazione IRCCS “Casa Sollievo della Sofferenza,” Foggia, Italy
| | - Giancarlo Logroscino
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
- Department of Clinical Research in Neurology, Center for Neurodegenerative Diseases and the Aging Brain, University of Bari Aldo Moro, “Pia Fondazione Cardinale G. Panico,” Tricase, Italy
| | - Nicola Quaranta
- Otolaryngology Unit, Department of Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
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Nixon GK, Sarant JZ, Tomlin D. Peripheral and central hearing impairment and their relationship with cognition: a review. Int J Audiol 2019; 58:541-552. [PMID: 30939073 DOI: 10.1080/14992027.2019.1591644] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Objective: To consider the relationships between both peripheral and central hearing impairment and cognition. Design: Narrative review. Study sample: Numerous studies exploring the relationship between hearing impairment and cognitive function, particularly in an older population. Results: In addition to the well-documented relationship between peripheral hearing loss and cognition highlighted in previous comprehensive reviews, there is also some evidence to suggest that there is a relationship between central hearing impairment and cognition. Further research is required to better understand this relationship and its effects on hearing aid benefit in people with both peripheral hearing loss and central hearing impairment. Conclusions: To fully understand the relationship between hearing impairment and cognitive impairment, not only peripheral but central hearing needs to be considered. Such knowledge could be of benefit in the clinical management of people with both peripheral hearing loss and central hearing impairment.
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Affiliation(s)
- Grace Kellee Nixon
- a Department of Audiology and Speech Pathology , The University of Melbourne , Melbourne , Australia
| | - Julia Zoe Sarant
- a Department of Audiology and Speech Pathology , The University of Melbourne , Melbourne , Australia
| | - Dani Tomlin
- a Department of Audiology and Speech Pathology , The University of Melbourne , Melbourne , Australia
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Mansour Y, Blackburn K, González-González LO, Calderón-Garcidueñas L, Kulesza RJ. Auditory Brainstem Dysfunction, Non-Invasive Biomarkers for Early Diagnosis and Monitoring of Alzheimer’s Disease in Young Urban Residents Exposed to Air Pollution. J Alzheimers Dis 2019; 67:1147-1155. [DOI: 10.3233/jad-181186] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yusra Mansour
- Department of Anatomy, Lake Erie College of Osteopathic Medicine, Erie, PA, USA
| | - Kaitlyn Blackburn
- Department of Neurology, University of Pittsburgh Medical Center, Erie, PA, USA
| | | | | | - Randy J. Kulesza
- Department of Anatomy, Lake Erie College of Osteopathic Medicine, Erie, PA, USA
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11
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Heine C, Slone M. Case studies of adults with central auditory processing disorder: Shifting the spotlight! SAGE Open Med Case Rep 2019; 7:2050313X18823461. [PMID: 30719311 PMCID: PMC6349983 DOI: 10.1177/2050313x18823461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 12/13/2018] [Indexed: 11/16/2022] Open
Abstract
Vast literature exists detailing the identification and management of central auditory processing disorder in children: however, less information is available regarding central auditory processing disorder in the adult population. This study aimed to document the diagnostic and management procedure for adults presenting at a multidisciplinary clinic due to concerns regarding their listening and central auditory processing skills. This retrospective study was a case file audit of two adults (a male, aged 37 years and a female, aged 44 years) who presented at a multidisciplinary (audiology and speech pathology) clinic for a hearing and central auditory processing evaluation. Both participants completed a case history questionnaire and were then interviewed with results being documented in their file. Participants were evaluated by a dually qualified audiologist-speech pathologist on a battery of peripheral hearing tests (including pure-tone threshold audiometry, immittance measures and speech tests), central auditory processing assessments (including monaural low redundancy, dichotic listening and temporal processing tests) and evaluation of short-term auditory memory skills. Participants were self-referred, never having been assessed previously for central auditory processing disorder, yet had perceived heightened difficulty with processing information; having conversations (particularly in noisy work or social environments) and remembering information, resulting in a range of psychosocial responses. Following diagnosis of central auditory processing disorder, participants undertook an individualized short-term aural rehabilitation program as dictated by their needs and preferences. Post-program participants perceived better ability to listen and process information even in adverse listening conditions. They reported that their newly learned skills improved their work abilities and social participation leading to positive outcomes. Medical and other allied health professionals should consider the possibility of presentation of central auditory processing disorder in adulthood and make appropriate referrals for central auditory processing testing to facilitate diagnosis and appropriate intervention. Aural rehabilitation should be considered for adults newly diagnosed with central auditory processing disorder.
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Affiliation(s)
- Chyrisse Heine
- Department of Community and Clinical Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, VIC, Australia
| | - Michelle Slone
- The School of Psychological Sciences, Faculty of Social Sciences, Tel Aviv University, Tel Aviv, Israel
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Panza F, Lozupone M, Sardone R, Battista P, Piccininni M, Dibello V, La Montagna M, Stallone R, Venezia P, Liguori A, Giannelli G, Bellomo A, Greco A, Daniele A, Seripa D, Quaranta N, Logroscino G. Sensorial frailty: age-related hearing loss and the risk of cognitive impairment and dementia in later life. Ther Adv Chronic Dis 2018; 10:2040622318811000. [PMID: 31452865 PMCID: PMC6700845 DOI: 10.1177/2040622318811000] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 10/12/2018] [Indexed: 01/12/2023] Open
Abstract
The peripheral hearing alterations and central auditory processing disorder (CAPD) associated with age-related hearing loss (ARHL), may impact cognitive disorders in older age. In older age, ARHL is also a significant marker for frailty, another age-related multidimensional clinical condition with a nonspecific state of vulnerability, reduced multisystem physiological reserve, and decreased resistance to different stressors (i.e. sensorial impairments, psychosocial stress, diseases, injuries). The multidimensional nature of frailty required an approach based on different pathogeneses because this clinical condition may include sensorial, physical, social, nutritional, cognitive, and psychological phenotypes. In the present narrative review, the cumulative epidemiological evidence coming from several longitudinal population-based studies, suggested convincing links between peripheral ARHL and incident cognitive decline and dementia. Moreover, a few longitudinal case-control and population-based studies also suggested that age-related CAPD in ARHL, may be central in determining an increased risk of incident cognitive decline, dementia, and Alzheimer's disease (AD). Cumulative meta-analytic evidence confirmed cross-sectional and longitudinal association of both peripheral ARHL and age-related CAPD with different domains of cognitive functions, mild cognitive impairment, and dementia, while the association with dementia subtypes such as AD and vascular dementia remained unclear. However, ARHL may represent a modifiable condition and a possible target for secondary prevention of cognitive impairment in older age, social isolation, late-life depression, and frailty. Further research is required to determine whether broader hearing rehabilitative interventions including coordinated counseling and environmental accommodations could delay or halt cognitive and global decline in the oldest old with both ARHL and dementia.
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Affiliation(s)
- Francesco Panza
- Department of Basic Medical Sciences,
Neurosciences, and Sense Organs, Neurodegenerative Disease Unit, University
of Bari ‘Aldo Moro’, Piazza Giulio Cesare 11, 70100, Bari, Italy
| | - Madia Lozupone
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
| | - Rodolfo Sardone
- National Institute of Gastroenterology ‘Saverio
de Bellis’, Research Hospital, Castellana Grotte Bari, Italy
| | - Petronilla Battista
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
- Istituti Clinici Scientifici Maugeri SPA SB,
IRCCS, Institute of Cassano Murge, Bari, Italy
| | - Marco Piccininni
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
| | - Vittorio Dibello
- National Institute of Gastroenterology ‘Saverio
de Bellis’, Research Hospital, Castellana Grotte Bari, Italy
- Interdisciplinary Department of Medicine (DIM),
Section of Dentistry, University of Bari Aldo Moro, Bari, Italy
| | - Maddalena La Montagna
- Psychiatric Unit, Department of Clinical and
Experimental Medicine, University of Foggia, Foggia, Italy
| | - Roberta Stallone
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
- National Institute of Gastroenterology ‘Saverio
de Bellis’, Research Hospital, Castellana Grotte Bari, Italy
| | - Pietro Venezia
- Department of Prosthodontics, Section of
Dentistry, University of Catania, Catania, Italy
| | - Angelo Liguori
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
| | - Gianluigi Giannelli
- National Institute of Gastroenterology ‘Saverio
de Bellis’, Research Hospital, Castellana Grotte Bari, Italy
| | - Antonello Bellomo
- Psychiatric Unit, Department of Clinical and
Experimental Medicine, University of Foggia, Foggia, Italy
| | - Antonio Greco
- Geriatric Unit, Fondazione IRCCS ‘Casa Sollievo
della Sofferenza’, San Giovanni Rotondo, Foggia, Italy
| | - Antonio Daniele
- Institute of Neurology, Catholic University of
Sacred Heart, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli
IRCCS, Rome, Italy
| | - Davide Seripa
- Geriatric Unit, Fondazione IRCCS ‘Casa Sollievo
della Sofferenza’, San Giovanni Rotondo, Foggia, Italy
| | - Nicola Quaranta
- Otolaryngology Unit, University of Bari Aldo
Moro, Bari, Italy
| | - Giancarlo Logroscino
- Neurodegenerative Disease Unit, Department of
Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo
Moro, Bari, Italy
- Neurodegenerative Disease Unit, Department of
Clinical Research in Neurology, University of Bari Aldo Moro, ‘Pia
Fondazione Cardinale G. Panico’, Tricase, Lecce, Italy
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Kantar Gok D, Hidisoglu E, Ocak GA, Er H, Acun AD, Yargıcoglu P. Protective role of rosmarinic acid on amyloid beta 42-induced echoic memory decline: Implication of oxidative stress and cholinergic impairment. Neurochem Int 2018; 118:1-13. [PMID: 29655652 DOI: 10.1016/j.neuint.2018.04.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/23/2018] [Accepted: 04/12/2018] [Indexed: 12/21/2022]
Abstract
In the present study, we examined whether rosmarinic acid (RA) reverses amyloid β (Aβ) induced reductions in antioxidant defense, lipid peroxidation, cholinergic damage as well as the central auditory deficits. For this purpose, Wistar rats were randomly divided into four groups; Sham(S), Sham + RA (SR), Aβ42 peptide (Aβ) and Aβ42 peptide + RA (AβR) groups. Rat model of Alzheimer was established by bilateral injection of Aβ42 peptide (2,2 nmol/10 μl) into the lateral ventricles. RA (50 mg/kg, daily) was administered orally by gavage for 14 days after intracerebroventricular injection. At the end of the experimental period, we recorded the auditory event related potentials (AERPs) and mismatch negativity (MMN) response to assess auditory functions followed by histological and biochemical analysis. Aβ42 injection led to a significant increase in the levels of thiobarbituric acid reactive substances (TBARS) and 4-Hydroxy-2-nonenal (4-HNE) but decreased the activity of antioxidant enzymes (SOD, CAT, GSH-Px) and glutathione levels. Moreover, Aβ42 injection resulted in a reduction in the acetylcholine content and acetylcholine esterase activity. RA treatment prevented the observed alterations in the AβR group. Furthermore, RA attenuated the increased Aβ staining and astrocyte activation. We also found that Aβ42 injection decreased the MMN response and theta power/coherence of AERPs, suggesting an impairing effect on auditory discrimination and echoic memory processes. RA treatment reversed the Aβ42 related alterations in AERP parameters. In conclusion, our study demonstrates that RA prevented Aβ-induced antioxidant-oxidant imbalance and cholinergic damage, which may contribute to the improvement of neural network dynamics of auditory processes in this rat model.
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Affiliation(s)
- Deniz Kantar Gok
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey
| | - Enis Hidisoglu
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey
| | - Guzide Ayse Ocak
- Department of Pathology, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey
| | - Hakan Er
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey
| | - Alev Duygu Acun
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey
| | - Piraye Yargıcoglu
- Department of Biophysics, Faculty of Medicine, Akdeniz University, Arapsuyu, 07070 Antalya, Turkey.
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14
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Tuwaig M, Savard M, Jutras B, Poirier J, Collins DL, Rosa-Neto P, Fontaine D, Breitner JCS. Deficit in Central Auditory Processing as a Biomarker of Pre-Clinical Alzheimer's Disease. J Alzheimers Dis 2018; 60:1589-1600. [PMID: 28984583 PMCID: PMC5757649 DOI: 10.3233/jad-170545] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Prevention of dementia due to Alzheimer's disease (d/AD) requires interventions that slow the disease process prior to symptom onset. To develop such interventions, one needs metrics that assess pre-symptomatic disease progression. Familiar measures of progression include cerebrospinal fluid (CSF) biochemical and imaging analyses, as well as cognitive testing. Changes in the latter can sometimes be difficult to distinguish from effects of "normal" aging. A different approach involves testing of "central auditory processing" (CAP), which enables comprehension of auditory stimuli amidst a distracting background (e.g., conversation in a noisy bar or restaurant). Such comprehension is often impaired in d/AD. Similarly, effortful or diminished auditory comprehension is sometimes reported by cognitively healthy elders, raising the possibility that CAP deficit may be a marker of pre-symptomatic AD. In 187 cognitively and physically healthy members of the aging, AD family history-positive PREVENT-AD cohort, we therefore evaluated whether CAP deficits were associated with known markers of AD neurodegeneration. Such markers included CSF tau concentrations and magnetic resonance imaging volumetric and cortical thickness measures in key AD-related regions. Adjusting for age, sex, education, pure-tone hearing, and APOEɛ4 status, we observed a persistent relationship between CAP scores and CSF tau levels, entorhinal and hippocampal cortex volumes, cortical thickness, and deficits in cognition (Repeatable Battery for Assessment of Neuropsychological Status total score, and several of its index scales). These cross-sectional observations suggest that CAP may serve as a novel metric for pre-symptomatic AD pathogenesis. They are therefore being followed up longitudinally with larger samples.
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Affiliation(s)
- Miranda Tuwaig
- Douglas Mental Health University Institute, Montreal, QC, Canada.,McGill University, Montreal, QC, Canada
| | - Mélissa Savard
- Douglas Mental Health University Institute, Montreal, QC, Canada
| | - Benoît Jutras
- Sainte-Justine Hospital Pediatric Research Centre, Montreal, QC, Canada.,Université de Montréal, Montreal, QC, Canada
| | - Judes Poirier
- Douglas Mental Health University Institute, Montreal, QC, Canada.,McGill University, Montreal, QC, Canada
| | - D Louis Collins
- Douglas Mental Health University Institute, Montreal, QC, Canada.,McGill University, Montreal, QC, Canada
| | - Pedro Rosa-Neto
- Douglas Mental Health University Institute, Montreal, QC, Canada.,McGill University, Montreal, QC, Canada
| | - David Fontaine
- Douglas Mental Health University Institute, Montreal, QC, Canada
| | - John C S Breitner
- Douglas Mental Health University Institute, Montreal, QC, Canada.,McGill University, Montreal, QC, Canada
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15
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Jayakody DMP, Friedland PL, Martins RN, Sohrabi HR. Impact of Aging on the Auditory System and Related Cognitive Functions: A Narrative Review. Front Neurosci 2018; 12:125. [PMID: 29556173 PMCID: PMC5844959 DOI: 10.3389/fnins.2018.00125] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 02/15/2018] [Indexed: 12/15/2022] Open
Abstract
Age-related hearing loss (ARHL), presbycusis, is a chronic health condition that affects approximately one-third of the world's population. The peripheral and central hearing alterations associated with age-related hearing loss have a profound impact on perception of verbal and non-verbal auditory stimuli. The high prevalence of hearing loss in the older adults corresponds to the increased frequency of dementia in this population. Therefore, researchers have focused their attention on age-related central effects that occur independent of the peripheral hearing loss as well as central effects of peripheral hearing loss and its association with cognitive decline and dementia. Here we review the current evidence for the age-related changes of the peripheral and central auditory system and the relationship between hearing loss and pathological cognitive decline and dementia. Furthermore, there is a paucity of evidence on the relationship between ARHL and established biomarkers of Alzheimer's disease, as the most common cause of dementia. Such studies are critical to be able to consider any causal relationship between dementia and ARHL. While this narrative review will examine the pathophysiological alterations in both the peripheral and central auditory system and its clinical implications, the question remains unanswered whether hearing loss causes cognitive impairment or vice versa.
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Affiliation(s)
- Dona M P Jayakody
- Clinical Research, Ear Science Institute Australia, Subiaco, WA, Australia.,School of Surgery, University of Western Australia, Perth, WA, Australia
| | - Peter L Friedland
- Clinical Research, Ear Science Institute Australia, Subiaco, WA, Australia.,School of Surgery, University of Western Australia, Perth, WA, Australia.,School of Medicine, University of Notre Dame Australia, Fremantle, WA, Australia
| | - Ralph N Martins
- Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Hamid R Sohrabi
- Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
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16
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Khodabakhsh A, Demiroglu C. Analysis of speech-based measures for detecting and monitoring Alzheimer's disease. Methods Mol Biol 2016; 1246:159-73. [PMID: 25417086 DOI: 10.1007/978-1-4939-1985-7_11] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Automatic diagnosis of the Alzheimer's disease as well as monitoring of the diagnosed patients can make significant economic impact on societies. We investigated an automatic diagnosis approach through the use of speech based features. As opposed to standard tests, spontaneous conversations are carried and recorded with the subjects. Speech features could discriminate between healthy people and the patients with high reliability. Although the patients were in later stages of Alzheimer's disease, results indicate the potential of speech-based automated solutions for Alzheimer's disease diagnosis. Moreover, the data collection process employed here can be done inexpensively by call center agents in a real-life application. Thus, the investigated techniques hold the potential to significantly reduce the financial burden on governments and Alzheimer's patients.
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Sheft S, Shafiro V, Wang E, Barnes LL, Shah RC. Relationship between Auditory and Cognitive Abilities in Older Adults. PLoS One 2015; 10:e0134330. [PMID: 26237423 PMCID: PMC4523175 DOI: 10.1371/journal.pone.0134330] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 07/09/2015] [Indexed: 02/07/2023] Open
Abstract
Objective The objective was to evaluate the association of peripheral and central hearing abilities with cognitive function in older adults. Methods Recruited from epidemiological studies of aging and cognition at the Rush Alzheimer’s Disease Center, participants were a community-dwelling cohort of older adults (range 63–98 years) without diagnosis of dementia. The cohort contained roughly equal numbers of Black (n=61) and White (n=63) subjects with groups similar in terms of age, gender, and years of education. Auditory abilities were measured with pure-tone audiometry, speech-in-noise perception, and discrimination thresholds for both static and dynamic spectral patterns. Cognitive performance was evaluated with a 12-test battery assessing episodic, semantic, and working memory, perceptual speed, and visuospatial abilities. Results Among the auditory measures, only the static and dynamic spectral-pattern discrimination thresholds were associated with cognitive performance in a regression model that included the demographic covariates race, age, gender, and years of education. Subsequent analysis indicated substantial shared variance among the covariates race and both measures of spectral-pattern discrimination in accounting for cognitive performance. Among cognitive measures, working memory and visuospatial abilities showed the strongest interrelationship to spectral-pattern discrimination performance. Conclusions For a cohort of older adults without diagnosis of dementia, neither hearing thresholds nor speech-in-noise ability showed significant association with a summary measure of global cognition. In contrast, the two auditory metrics of spectral-pattern discrimination ability significantly contributed to a regression model prediction of cognitive performance, demonstrating association of central auditory ability to cognitive status using auditory metrics that avoided the confounding effect of speech materials.
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Affiliation(s)
- Stanley Sheft
- Department of Communication Disorders and Sciences, Rush University Medical Center, Chicago, Illinois, United States of America
- * E-mail:
| | - Valeriy Shafiro
- Department of Communication Disorders and Sciences, Rush University Medical Center, Chicago, Illinois, United States of America
| | - Emily Wang
- Department of Communication Disorders and Sciences, Rush University Medical Center, Chicago, Illinois, United States of America
| | - Lisa L. Barnes
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, United States of America
- Departments of Neurological Sciences and Behavioral Sciences, Rush University Medical Center, Chicago, Illinois, United States of America
| | - Raj C. Shah
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, United States of America
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18
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Risacher SL, Wudunn D, Pepin SM, MaGee TR, McDonald BC, Flashman LA, Wishart HA, Pixley HS, Rabin LA, Paré N, Englert JJ, Schwartz E, Curtain JR, West JD, O'Neill DP, Santulli RB, Newman RW, Saykin AJ. Visual contrast sensitivity in Alzheimer's disease, mild cognitive impairment, and older adults with cognitive complaints. Neurobiol Aging 2012; 34:1133-44. [PMID: 23084085 DOI: 10.1016/j.neurobiolaging.2012.08.007] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 07/15/2012] [Accepted: 08/09/2012] [Indexed: 10/27/2022]
Abstract
Deficits in contrast sensitivity (CS) have been reported in Alzheimer's disease (AD). However, the extent of these deficits in prodromal AD stages, including mild cognitive impairment (MCI) or even earlier, has not been investigated. In this study, CS was assessed using frequency doubling technology in older adults with AD (n = 10), amnestic MCI (n = 28), cognitive complaints without performance deficits (CC; n = 20), and healthy controls (HC; n = 29). The association between CS and cognition was also evaluated. Finally, the accuracy of CS measures for classifying MCI versus HC was evaluated. CS deficits were found in AD and MCI, while CC showed intermediate performance between MCI and HC. Upper right visual field CS showed the most significant difference among groups. CS was also associated with cognitive performance. Finally, CS measures accurately classified MCI versus HC. The CS deficits in AD and MCI, and intermediate performance in CC, indicate that these measures are sensitive to early AD-associated changes. Therefore, frequency doubling technology-based measures of CS may have promise as a novel AD biomarker.
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Affiliation(s)
- Shannon L Risacher
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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20
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Horley K, Reid A, Burnham D. Emotional prosody perception and production in dementia of the Alzheimer's type. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2010; 53:1132-1146. [PMID: 20643797 DOI: 10.1044/1092-4388(2010/09-0030)] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE In this study, the authors investigated emotional prosody in patients with moderate Dementia of the Alzheimer's type (DAT) With Late Onset. It was expected that both expression and reception of prosody would be impaired relative to age-matched controls. METHOD Twenty DAT and 20 control participants engaged in 2 expressive and 2 receptive tasks with randomly presented exemplars of sentences targeting the emotions of happiness, anger, sadness, and surprise. RESULTS In the expressive tasks, objective acoustic measurements revealed significantly less pitch modulation by the patient group, but these measurements showed that they retained the ability to vary pitch level, pitch modulation, and speaking rate as a function of emotion. In the receptive tasks, perception of emotion by the patient group was significantly inferior to the control group. CONCLUSIONS Implications are discussed regarding impaired emotional prosody in DAT, and the utility of objective acoustic measures in revealing subtle deficits and overcoming methodological inconsistencies is emphasized. Further research is critical in advancing our understanding of this pervasive disorder and is important, clinically, in the provision of specific interventions.
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Affiliation(s)
- Kaye Horley
- MARCS Auditory Laboratories, University of Western Sydney, Locked Bag 1797, Penrith South DC NSW 1797, Australia
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Abstract
There is no standardized material to assess auditory processing (AP) in Spanish-speaking adults. The purpose of this research was to develop and obtain initial normative data for AP tests for Spanish-speaking adults. The AP tests comprised the Hong Kong CAPA (Hong Kong central auditory processing assessment) including speech-in-noise, binaural fusion, filtered speech, and dichotic digit tests. In addition five tests already developed by other authors, but with no normative data reported for the target population, were included in the study. These tests were staggered spondaic words, random gap detection, pitch pattern sequence, duration pattern sequence, and masking level difference. Forty normal hearing Chilean adults were assessed to obtain the initial normative data. Several correlations were found between tests and between subtests within the same test category. 90th percentiles are suggested as initial normative data.
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Affiliation(s)
- Adrian Fuente
- Centre for Communication Disorders, The University of Hong Kong, China.
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22
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Friedland DR, Popper P, Eernisse R, Cioffi JA. Differentially expressed genes in the rat cochlear nucleus. Neuroscience 2006; 142:753-68. [PMID: 16905270 DOI: 10.1016/j.neuroscience.2006.06.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2006] [Revised: 05/05/2006] [Accepted: 06/30/2006] [Indexed: 11/27/2022]
Abstract
The cochlear nucleus is the first central pathway involved in the processing of peripheral auditory activity. The anterior ventral cochlear nucleus (AVCN), posterior ventral cochlear nucleus (PVCN) and dorsal cochlear nucleus (DCN) each contain predominant populations of neurons that have been well characterized regarding their morphological and electrophysiological properties. Little is known, however, of the underlying genetic factors that contribute to these properties and the initial steps in auditory processing. Serial analysis of gene expression (SAGE), supported by microarray experiments, was performed on each subdivision of the rat cochlear nucleus to identify genes that may sub-serve specialized roles in the central auditory system. Pair-wise comparisons between SAGE libraries from the AVCN, PVCN and DCN were correlated with microarray experiments to identify individual transcripts with significant differential expression. Twelve highly correlated genes were identified representing cytoskeletal, vesicular, metabolic and g-protein regulating proteins. Among these were Rgs4 which showed higher expression in the DCN, Sst and Cyp11b1 with very high expression in the AVCN and Calb2 with preferential expression in the PVCN. The differential expression of these genes was validated with real-time reverse transcriptase-polymerase chain reaction. These experiments provide a basis for understanding normal auditory processing on a molecular level and a template for investigating changes that may occur in the cochlear nucleus with hearing loss, the generation and percept of tinnitus, and central auditory processing disorders.
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Affiliation(s)
- D R Friedland
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA.
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23
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Friedland DR, Popper P, Eernisse R, Ringger B, Cioffi JA. Differential expression of cytoskeletal genes in the cochlear nucleus. ACTA ACUST UNITED AC 2006; 288:447-65. [PMID: 16550590 PMCID: PMC2570442 DOI: 10.1002/ar.a.20303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The relationship between structure and function is clearly illustrated by emerging evidence demonstrating the role of the neuronal cytoskeleton in physiological processes. For example, alterations in axonal caliber, a feature of the cytoskeleton, have been shown to affect reflex arc latencies and are prominent features of several neuropathological disorders. Even in the nonpathologic situation, however, axonal diameter may be a crucial element for the normal function of specialized auditory neurons. To investigate this relationship, we used serial analysis of gene expression and microarray analyses to characterize the expression of cytoskeletal genes in the central auditory system. These data, confirmed by real-time RT-PCR, identified differential expression of intermediate neurofilament transcripts (i.e., Nefh, Nef3, and Nfl) among the subdivisions of the cochlear nucleus. In situ hybridization was used to identify specific classes of neurons within the cochlear nucleus expressing these neurofilament genes. Robust neurofilament expression was seen in bushy cells and cochlear nerve root neurons, suggesting an association between cytoskeletal structure and rapid conduction velocities. Gene expression data were also identified for other classes of cytoskeletal and structural genes important in neuronal function. These results may help to explain some causes of hearing loss in hereditary neuropathies and provide an anatomic basis for understanding normal neuronal function in the central auditory system.
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Affiliation(s)
- David R Friedland
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA.
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