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Bhatt IS, Raygoza Garay JA, Bhagavan SG, Ingalls V, Dias R, Torkamani A. Polygenic Risk Score-Based Association Analysis Identifies Genetic Comorbidities Associated with Age-Related Hearing Difficulty in Two Independent Samples. J Assoc Res Otolaryngol 2024:10.1007/s10162-024-00947-0. [PMID: 38782831 DOI: 10.1007/s10162-024-00947-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/18/2024] [Indexed: 05/25/2024] Open
Abstract
PURPOSE Age-related hearing loss is the most common form of permanent hearing loss that is associated with various health traits, including Alzheimer's disease, cognitive decline, and depression. The present study aims to identify genetic comorbidities of age-related hearing loss. Past genome-wide association studies identified multiple genomic loci involved in common adult-onset health traits. Polygenic risk scores (PRS) could summarize the polygenic inheritance and quantify the genetic susceptibility of complex traits independent of trait expression. The present study conducted a PRS-based association analysis of age-related hearing difficulty in the UK Biobank sample (N = 425,240), followed by a replication analysis using hearing thresholds (HTs) and distortion-product otoacoustic emissions (DPOAEs) in 242 young adults with self-reported normal hearing. We hypothesized that young adults with genetic comorbidities associated with age-related hearing difficulty would exhibit subclinical decline in HTs and DPOAEs in both ears. METHODS A total of 111,243 participants reported age-related hearing difficulty in the UK Biobank sample (> 40 years). The PRS models were derived from the polygenic risk score catalog to obtain 2627 PRS predictors across the health spectrum. HTs (0.25-16 kHz) and DPOAEs (1-16 kHz, L1/L2 = 65/55 dB SPL, F2/F1 = 1.22) were measured on 242 young adults. Saliva-derived DNA samples were subjected to low-pass whole genome sequencing, followed by genome-wide imputation and PRS calculation. The logistic regression analyses were performed to identify PRS predictors of age-related hearing difficulty in the UK Biobank cohort. The linear mixed model analyses were performed to identify PRS predictors of HTs and DPOAEs. RESULTS The PRS-based association analysis identified 977 PRS predictors across the health spectrum associated with age-related hearing difficulty. Hearing difficulty and hearing aid use PRS predictors revealed the strongest association with the age-related hearing difficulty phenotype. Youth with a higher genetic predisposition to hearing difficulty revealed a subclinical elevation in HTs and a decline in DPOAEs in both ears. PRS predictors associated with age-related hearing difficulty were enriched for mental health, lifestyle, metabolic, sleep, reproductive, digestive, respiratory, hematopoietic, and immune traits. Fifty PRS predictors belonging to various trait categories were replicated for HTs and DPOAEs in both ears. CONCLUSION The study identified genetic comorbidities associated with age-related hearing loss across the health spectrum. Youth with a high genetic predisposition to age-related hearing difficulty and other related complex traits could exhibit sub-clinical decline in HTs and DPOAEs decades before clinically meaningful age-related hearing loss is observed. We posit that effective communication of genetic risk, promoting a healthy lifestyle, and reducing exposure to environmental risk factors at younger ages could help prevent or delay the onset of age-related hearing difficulty at older ages.
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Affiliation(s)
- Ishan Sunilkumar Bhatt
- Department of Communication Sciences & Disorders, University of Iowa, 250 Hawkins Dr, Iowa City, IA, 52242, USA.
| | - Juan Antonio Raygoza Garay
- Department of Communication Sciences & Disorders, University of Iowa, 250 Hawkins Dr, Iowa City, IA, 52242, USA
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, 52242, USA
| | - Srividya Grama Bhagavan
- Department of Communication Sciences & Disorders, University of Iowa, 250 Hawkins Dr, Iowa City, IA, 52242, USA
| | - Valerie Ingalls
- Department of Communication Sciences & Disorders, University of Iowa, 250 Hawkins Dr, Iowa City, IA, 52242, USA
| | - Raquel Dias
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, 32608, USA
| | - Ali Torkamani
- Department of Integrative Structural and Computational Biology, Scripps Science Institute, La Jolla, CA, 92037, USA
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S. P, V. A, R.B. NN, S. R. Pure Tone Audiometry in Anemia Patients. Indian J Otolaryngol Head Neck Surg 2024; 76:1711-1715. [PMID: 38566725 PMCID: PMC10982188 DOI: 10.1007/s12070-023-04388-8] [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: 08/30/2023] [Accepted: 11/18/2023] [Indexed: 04/04/2024] Open
Abstract
Aim Anaemia is a prevalent medical condition that impacts a significant proportion of the worldwide populace. While the cardiovascular and respiratory systems' influence on anaemia has been extensively researched, its effect on the auditory system remains unclear. The objective of this investigation was to assess the pure tone audiometry of individuals with anaemia and establish a connection between the type of hearing impairment and the level of anaemia, if any. Materials and Methods This cross-sectional study comprised 100 patients who were diagnosed with anaemia. All study participants underwent a thorough general examination and hearing assessment, which encompassed tuning fork tests, and pure-tone audiometry. Statistical analysis was utilized to determine the type and severity of hearing loss and its correlation with the degree of anaemia. Results Our research findings indicate that 46.8% of moderately anaemic patients and 62.9% of patients with severe anaemia exhibited sensorineural hearing loss. A significant correlation was observed between the degree of anaemia (p < 0.05) and hearing loss. Our research findings indicate that individuals with moderate and severe anaemia exhibit a notably greater incidence of hearing impairment in comparison to those with mild anaemia. Conclusion The research findings thus suggest a potential correlation between anaemia and auditory impairment. The timely identification and management of anaemia could potentially play a crucial role in preventing or reducing hearing impairment among individuals with anaemia. Additional research is required to clarify the mechanisms that underlie this association and to investigate possible interventions for mitigating the risk of hearing impairment in individuals with anaemia.
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Affiliation(s)
- Prabakaran S.
- Department of ENT, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103 Tamil Nadu India
| | - Adithya V.
- Department of ENT, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103 Tamil Nadu India
| | - Namasivaya Navin R.B.
- Department of ENT, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103 Tamil Nadu India
| | - Rajasekaran S.
- Department of ENT, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103 Tamil Nadu India
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Jiang LZ, Zuo WQ. Batroxobin can improve the efficacy of combination therapy for profound sudden sensorineural hearing loss greater than but not less than 100 dB HL. J Laryngol Otol 2024; 138:270-275. [PMID: 37994420 DOI: 10.1017/s0022215123001512] [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: 11/24/2023]
Abstract
OBJECTIVE To investigate the effects of combination therapy with and without batroxobin, and the frequency of batroxobin use on the prognosis of profound sudden sensorineural hearing loss. METHODS Hearing recovery in the batroxobin group (231 patients) and non-batroxobin group (56 patients) was compared. The correlation between the number of times batroxobin was used and hearing recovery was analysed. RESULTS The decrease in hearing threshold and overall improvement rate in the batroxobin group with hearing loss exceeding 100 dB HL was significantly higher than that in the non-batroxobin group. There was no linear correlation between the number of times batroxobin was used and the overall improvement rate. Using batroxobin two to three times achieved a therapeutic effectiveness plateau. CONCLUSION Batroxobin can improve the efficacy of combination therapy for profound sudden sensorineural hearing loss exceeding 100 dB HL, and using batroxobin two to three times yields the maximum overall improvement rate.
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Affiliation(s)
- Li Zhu Jiang
- Department of Otolaryngology, First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Wen Qi Zuo
- Department of Otolaryngology, First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Li J, Jin X, Kong X, Hu N, Li X, Wang L, Liu M, Li C, Liu Y, Sun L, Gong R. Correlation of endolymphatic hydrops and perilymphatic enhancement with the clinical features of Ménière's disease. Eur Radiol 2024:10.1007/s00330-024-10620-y. [PMID: 38308680 DOI: 10.1007/s00330-024-10620-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVES To use three-dimensional real inversion recovery (3D-real IR) MRI to investigate correlations between endolymphatic hydrops (EH) grades or the degree of perilymphatic enhancement (PE) and clinical features of Ménière's disease (MD), as previous findings have been inconsistent. METHODS A total of 273 consecutive patients with definite unilateral MD were retrospectively enrolled from September 2020 to October 2021. All patients underwent 3D-real IR and 3D-T2WI 6 h after intravenous gadolinium injection. MD-related symptom duration and vertigo frequency were recorded. EH grades were evaluated, the signal intensity ratio (SIR) was measured, and correlations between clinical features and EH, PE were assessed respectively. RESULTS The study included 123 males and 150 females, with a mean age of 53.0 years. A longer duration of vertigo was associated with higher cochlear EH grades, whereas the opposite was true for the duration of aural fullness. A longer time since vertigo onset was associated with higher vestibular EH grades; the opposite was true for the duration of individual vertigo attacks. The multiple regression analysis revealed that age, tinnitus duration, and vestibular EH were risk factors for SIR. Furthermore, the low-frequency hearing threshold (HT) was a risk factor for cochlear and vestibular EH, and the SIR. CONCLUSION The EH grade and SIR (an indicator for the quantitative evaluation of PE) were correlated with clinical features and HT of MD; thus, imaging can be a valuable tool in planning individualised treatment. CLINICAL RELEVANCE STATEMENT This study revealed that the grade of endolymphatic hydrops and degree of perilymphatic enhancement positively correlates with the length of time since onset of clinical symptoms and hearing thresholds in patients with Ménière's disease, facilitating the tailored treatment. KEY POINTS • Relationships between 3-dimensional real inversion recovery features and clinical symptoms in Ménière's disease are unknown. • Symptom duration and hearing thresholds correlated with endolymphatic hydrops grades and degree of perilymphatic enhancement. • MRI features correlate with MD severity; thus, imaging is valuable for planning tailored treatment.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Xianwen Jin
- Department of Radiology, Shandong Maternal and Child Health Care Hospital, Jinan, People's Republic of China
| | - Xiao Kong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Xiaoqin Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Mengxiao Liu
- Diagnostic Imaging, MR scientific Marketing, Siemens Healthineers Ltd, Shanghai, People's Republic of China
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, People's Republic of China
| | - Yafei Liu
- Shandong Mental Health Center, Shandong University, 49 Wenhua Dong Road, Jinan, People's Republic of China.
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China.
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, People's Republic of China
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Tavazzani E, Spaiardi P, Contini D, Sancini G, Russo G, Masetto S. Precision medicine: a new era for inner ear diseases. Front Pharmacol 2024; 15:1328460. [PMID: 38327988 PMCID: PMC10848152 DOI: 10.3389/fphar.2024.1328460] [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: 10/26/2023] [Accepted: 01/08/2024] [Indexed: 02/09/2024] Open
Abstract
The inner ear is the organ responsible for hearing and balance. Inner ear dysfunction can be the result of infection, trauma, ototoxic drugs, genetic mutation or predisposition. Often, like for Ménière disease, the cause is unknown. Due to the complex access to the inner ear as a fluid-filled cavity within the temporal bone of the skull, effective diagnosis of inner ear pathologies and targeted drug delivery pose significant challenges. Samples of inner ear fluids can only be collected during surgery because the available procedures damage the tiny and fragile structures of the inner ear. Concerning drug administration, the final dose, kinetics, and targets cannot be controlled. Overcoming these limitations is crucial for successful inner ear precision medicine. Recently, notable advancements in microneedle technologies offer the potential for safe sampling of inner ear fluids and local treatment. Ultrasharp microneedles can reach the inner ear fluids with minimal damage to the organ, collect μl amounts of perilymph, and deliver therapeutic agents in loco. This review highlights the potential of ultrasharp microneedles, combined with nano vectors and gene therapy, to effectively treat inner ear diseases of different etiology on an individual basis. Though further research is necessary to translate these innovative approaches into clinical practice, these technologies may represent a true breakthrough in the clinical approach to inner ear diseases, ushering in a new era of personalized medicine.
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Affiliation(s)
- Elisa Tavazzani
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- ICS-Maugeri IRCCS, Pavia, Italy
| | - Paolo Spaiardi
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
- Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia, Italy
| | - Donatella Contini
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Giulio Sancini
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
- Nanomedicine Center, Neuroscience Center, School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Giancarlo Russo
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
| | - Sergio Masetto
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
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Shibafar S, Jafarlou F. A review on the impacts of COVID-19 on the auditory system: Implications for public health promotion research. Health Promot Perspect 2023; 13:280-289. [PMID: 38235010 PMCID: PMC10790126 DOI: 10.34172/hpp.2023.33] [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: 05/15/2023] [Accepted: 08/26/2023] [Indexed: 01/19/2024] Open
Abstract
Background Currently, there are few studies on the relationship between COVID-19 and the auditory system. In the current study, a review of the studies conducted in the fields of etiopathology, clinical manifestations, research, and treatment of hearing loss caused byCOVID-19 was conducted, which can be used as a baseline for future studies. Methods We utilized the research approach suggested by Arksey and O'Malley to carry out this scoping review. Search was conducted in Farsi and English with a focus on the onset of hearing loss in patients with COVID-19 through Medline and PubMed, and Google Scholar search engine. Studies included were those involving adult patients diagnosed with COVID-19 who experienced hearing loss, ear pain, ear discharge, and otitis media. Studies were eligible for inclusion if there was a description of the otologic dysfunction, specifically onset, duration, or clinical outcomes. Results Among 90 studies identified, 35 studies were included in the review process. Our findings suggest several possible mechanisms for sudden sensorineural hearing loss (SSNHL) in COVID-19 patients, and COVID-19 infection could have deleterious effects on the inner ear, specifically on the hair cells of the cochlea despite patients being asymptomatic and early identification of SSNHL in COVID-19patients can save the hearing and also patient. Conclusion Hearing loss in COVID-19 infection has not received much attention by health care professionals. Sensorineural hearing loss (SNHL), tinnitus, and/or vertigo have been shown to occur during and following COVID-19 infection. Due to lack of research studies, and the inconsistency and even contradictory of the findings, it remains questionable whether COVID-19 contributes to the high incidence of hearing loss. The proper understanding of the mechanisms behind hearing loss in COVID-19 infections needs further research. However, it seems likely that SNHL could be included among the manifestations of those-called "long COVID" syndrome.
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Affiliation(s)
- Samin Shibafar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Audiology, School of Rehabilitation Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Jafarlou
- Department of Audiology, School of Rehabilitation Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Li J, Li L, Jin X, Hu N, Kong X, Wang L, Li X, Dou W, Sun L, Li C, Gong R. MRI can help differentiate Ménière's disease from other menieriform diseases. Sci Rep 2023; 13:21527. [PMID: 38057393 PMCID: PMC10700494 DOI: 10.1038/s41598-023-49066-5] [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: 08/24/2023] [Accepted: 12/04/2023] [Indexed: 12/08/2023] Open
Abstract
It is difficult to distinguish other pathologies mimicking Ménière's disease (MD) clinically. This study aims to investigate the differences of imaging findings and features between MD and other menieriform diseases via intravenous gadolinium-enhanced magnetic resonance imaging (MRI). 426 patients with menieriform symptoms, including MD, vestibular migraine (VM), and vestibular schwannoma (VS), underwent 3D-FLAIR and 3D-T2WI MRI 6 h after the intravenous gadolinium injection. MR images were analyzed for inner ear morphology, perilymphatic enhancement (PE), EH and other abnormalities. EH was observed at a higher rate in MD patients (85.71%) than patients with other menieriform diseases (VM group = 14.75%, VS group = 37.50%). The prevalence of unilateral EH as well as both cochlear and vestibular EH showed significant differences between MD and VM groups. The prevalence of cochlear EH (I and II) and vestibular EH (II and III) was different between MD and VM groups. The prevalence of PE was higher in MD than VM group. The degrees of cochlear and vestibular hydrops were higher in the definite than probable MD group (P < 0.05). Using these imaging features, MRI can be used to help differentiate MD from other menieriform diseases.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Long Li
- Hospital office, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xianwen Jin
- Department of Radiology, Shandong Maternal and Child Health Care Hospital, Jinan, People's Republic of China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiao Kong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiaoqin Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Weiqiang Dou
- GE Healthcare, MR Research China, Beijing, 100000, People's Republic of China
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China.
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China.
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
- Gong Ruozhen Innovation Studio, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China
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Shi X. Research advances in cochlear pericytes and hearing loss. Hear Res 2023; 438:108877. [PMID: 37651921 PMCID: PMC10538405 DOI: 10.1016/j.heares.2023.108877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 09/02/2023]
Abstract
Pericytes are specialized mural cells surrounding endothelial cells in microvascular beds. They play a role in vascular development, blood flow regulation, maintenance of blood-tissue barrier integrity, and control of angiogenesis, tissue fibrosis, and wound healing. In recent decades, understanding of the critical role played by pericytes in retina, brain, lung, and kidney has seen significant progress. The cochlea contains a large population of pericytes. However, the role of cochlear pericytes in auditory pathophysiology is, by contrast, largely unknown. The present review discusses recent progress in identifying cochlear pericytes, mapping their distribution, and defining their role in regulating blood flow, controlling the blood-labyrinth barrier (BLB) and angiogenesis, and involvement in different types of hearing loss.
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Affiliation(s)
- Xiaorui Shi
- Department of Otolaryngology/Head & Neck Surgery, Oregon Hearing Research Center (NRC04), Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239-3098, USA.
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Song J, Ouyang F, Xiong Y, Luo Q, Jiang H, Fan L, Zhang Z. Reassessment of oxidative stress in idiopathic sudden hearing loss and preliminary exploration of the effect of physiological concentration of melatonin on prognosis. Front Neurol 2023; 14:1249312. [PMID: 37745649 PMCID: PMC10511764 DOI: 10.3389/fneur.2023.1249312] [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: 06/28/2023] [Accepted: 08/18/2023] [Indexed: 09/26/2023] Open
Abstract
Background and purpose The pathogenesis of idiopathic sudden sensorineural hearing loss (ISSNHL) is still unclear, and there is no targeted treatment. This research aimed to verify the role of oxidative stress in ISSNHL and explore whether melatonin has a protective effect on hearing. Materials and methods A total of 43 patients with ISSNHL and 15 healthy controls were recruited to detect the level of melatonin, reactive oxygen species (ROS), and total antioxidant capacity (TAC) in the blood and compared before and after treatment. Multivariate logistic regression models were performed to assess the factors relevant to the occurrence and improvement of ISSNHL. Results The patients with ISSNHL showed significantly higher ROS levels than controls (4.42 ± 4.40 vs. 2.30 ± 0.59; p = 0.031). The levels of basal melatonin were higher (1400.83 ± 784.89 vs. 1095.97 ± 689.08; p = 0.046) and ROS levels were lower (3.05 ± 1.81 vs. 5.62 ± 5.56; p = 0.042) in the effective group as compared with the ineffective group. Logistic regression analysis showed that melatonin (OR = 0.999, 95% CI 0.997-1.000, p = 0.049), ROS (OR = 1.154, 95% CI 1.025-2.236, p = 0.037), and vertigo (OR = 3.011, 95% CI 1.339-26.983, p = 0.019) were independent factors associated with hearing improvement. Besides, the level of melatonin (OR = 0.999, 95% CI 0.998-1.000, p = 0.023) and ROS (OR = 3.248, 95% CI 1.109-9.516, p = 0.032) were associated with the occurrence of ISSNHL. Conclusion Our findings may suggest oxidative stress involvement in ISSNHL etiopathogenesis. The level of melatonin and ROS, and vertigo appear to be predictive of the effectiveness of hearing improvement following ISSNHL treatment.
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Affiliation(s)
- Jianxiong Song
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Fang Ouyang
- Department of Endocrinology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuanping Xiong
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Luo
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongqun Jiang
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Li Fan
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhiyuan Zhang
- Department of Otolaryngology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Ernst BP, Heinrich UR, Fries M, Meuser R, Rader T, Eckrich J, Stauber RH, Strieth S. Cochlear implantation impairs intracochlear microcirculation and counteracts iNOS induction in guinea pigs. Front Cell Neurosci 2023; 17:1189980. [PMID: 37448696 PMCID: PMC10336219 DOI: 10.3389/fncel.2023.1189980] [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: 03/20/2023] [Accepted: 06/06/2023] [Indexed: 07/15/2023] Open
Abstract
Introduction Preservation of residual hearing remains a great challenge during cochlear implantation. Cochlear implant (CI) electrode array insertion induces changes in the microvasculature as well as nitric oxide (NO)-dependent vessel dysfunction which have been identified as possible mediators of residual hearing loss after cochlear implantation. Methods A total of 24 guinea pigs were randomized to receive either a CI (n = 12) or a sham procedure (sham) by performing a cochleostomy without electrode array insertion (n = 12). The hearing threshold was determined using frequency-specific compound action potentials. To gain visual access to the stria vascularis, a microscopic window was created in the osseous cochlear lateral wall. Cochlear blood flow (CBF) and cochlear microvascular permeability (CMP) were evaluated immediately after treatment, as well as after 1 and 2 h, respectively. Finally, cochleae were resected for subsequent immunohistochemical analysis of the iNOS expression. Results The sham control group showed no change in mean CBF after 1 h (104.2 ± 0.7%) and 2 h (100.8 ± 3.6%) compared to baseline. In contrast, cochlear implantation resulted in a significant continuous decrease in CBF after 1 h (78.8 ± 8.1%, p < 0.001) and 2 h (60.6 ± 11.3%, p < 0.001). Additionally, the CI group exhibited a significantly increased CMP (+44.9% compared to baseline, p < 0.0001) and a significant increase in median hearing threshold (20.4 vs. 2.5 dB SPL, p = 0.0009) compared to sham after 2 h. Intriguingly, the CI group showed significantly lower iNOS-expression levels in the organ of Corti (329.5 vs. 54.33 AU, p = 0.0003), stria vascularis (596.7 vs. 48.51 AU, p < 0.0001), interdental cells (564.0 vs. 109.1 AU, p = 0.0003) and limbus fibrocytes (119.4 vs. 18.69 AU, p = 0.0286). Conclusion Mechanical and NO-dependent microvascular dysfunction seem to play a pivotal role in residual hearing loss after CI electrode array insertion. This may be facilitated by the implantation associated decrease in iNOS expression. Therefore, stabilization of cochlear microcirculation could be a therapeutic strategy to preserve residual hearing.
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Affiliation(s)
| | - Ulf-Rüdiger Heinrich
- Department of Otorhinolaryngology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Mathias Fries
- Department of Otorhinolaryngology, University Medical Center Bonn (UKB), Bonn, Germany
| | - Regina Meuser
- Institute for Medical Biometry, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Tobias Rader
- Division of Audiology, Department of Otorhinolaryngology, University Hospital, Ludwig-Maximilians-Universität München (LMU), Munich, Germany
| | - Jonas Eckrich
- Department of Otorhinolaryngology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Roland H. Stauber
- Department of Otorhinolaryngology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Sebastian Strieth
- Department of Otorhinolaryngology, University Medical Center Bonn (UKB), Bonn, Germany
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Brisse M, Fernández-Alarcón C, Huang Q, Kirk N, Schleiss MR, Liang Y, Ly H. Hearing loss in outbred Hartley guinea pigs experimentally infected with Pichinde virus as a surrogate model of human mammarenaviral hemorrhagic fevers. Virulence 2022; 13:1049-1061. [PMID: 35758052 PMCID: PMC9794012 DOI: 10.1080/21505594.2022.2087948] [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] [Indexed: 12/30/2022] Open
Abstract
Lassa fever (LF) is a neglected tropical disease that is caused by Lassa virus (LASV), a human hemorrhagic fever-causing mammarenavirus. A notable sequela of LF is sensorineural hearing loss (SNHL) that can develop in about 33% of the patients. Animal models of LF-associated SNHL have been limited in size and scope because LASV is a biosafety level 4 (BSL4) pathogen that requires its handling in a high biocontainment laboratory. In this report, we describe the development of an alternative arenavirus hearing loss model by infecting outbred Hartley guinea pigs with a virulent strain (rP18) of the Pichinde virus (PICV), which is a guinea pig-adapted mammarenavirus that has been used as a surrogate model of mammarenaviral hemorrhagic fevers in a conventional (BSL2) laboratory. By measuring auditory brainstem response (ABR) throughout the course of the virulent rP18 PICV infection, we noticed that some of the animals experienced an acute but transient level of hearing loss. Cochleae of hearing-impaired animals, but not of controls, had demonstrable viral RNA by quantitative RT-PCR, indicating the presence of virus in the affected inner ear with no overt histopathological changes. In contrast, neither the outbred Hartley guinea pigs infected with a known avirulent strain (rP2) of PICV nor those that were mock-infected showed any evidence of hearing loss or viral infection of the inner ear. This is the first report of an immunocompetent small animal model of mammarenavirus-induced hearing loss that can be used to evaluate potential therapeutics against virus-induced hearing impairment under a conventional laboratory setting.
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Affiliation(s)
- Morgan Brisse
- Biochemistry, Molecular Biology and Biophysics Graduate Program, University of Minnesota, Twin Cities, Minnesota, USA,Department of Veterinary and Biomedical Sciences College of Veterinary Medicine, University of Minnesota, Twin Cities, Minnesota, USA
| | | | - Qinfeng Huang
- Department of Veterinary and Biomedical Sciences College of Veterinary Medicine, University of Minnesota, Twin Cities, Minnesota, USA
| | - Natalie Kirk
- Comparative and Molecular Biosciences Graduate Program, University of Minnesota, Twin Cities, Minnesota, USA,Department of Veterinary and Biomedical Sciences College of Veterinary Medicine, University of Minnesota, Twin Cities, Minnesota, USA
| | - Mark R. Schleiss
- Department of Pediatrics, School of Medicine University of Minnesota, Twin Cities, Minnesota, USA
| | - Yuying Liang
- Department of Veterinary and Biomedical Sciences College of Veterinary Medicine, University of Minnesota, Twin Cities, Minnesota, USA
| | - Hinh Ly
- Biochemistry, Molecular Biology and Biophysics Graduate Program, University of Minnesota, Twin Cities, Minnesota, USA,Comparative and Molecular Biosciences Graduate Program, University of Minnesota, Twin Cities, Minnesota, USA,Department of Veterinary and Biomedical Sciences College of Veterinary Medicine, University of Minnesota, Twin Cities, Minnesota, USA,CONTACT Hinh Ly
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Long L, Jia Z, Tang X. Serum polyunsaturated fatty acids and hearing threshold shifts in adults in the United States: A cross-sectional study. Front Public Health 2022; 10:939827. [PMID: 36466471 PMCID: PMC9708739 DOI: 10.3389/fpubh.2022.939827] [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: 05/09/2022] [Accepted: 10/24/2022] [Indexed: 11/17/2022] Open
Abstract
Background Few studies have evaluated the association between polyunsaturated fatty acids (PUFAs) and hearing levels. This study aimed to investigate the association between serum PUFAs and hearing threshold shifts in US adults. Methods We investigated 913 adults from the National Health and Nutrition Examination Survey (NHANES) 2011-2012. Multivariate linear regression analyses were conducted to evaluate associations between PUFA and hearing threshold shifts. Results Overall, 11 serum PUFAs were inversely associated with low-frequency thresholds, especially in men, and were positively related to high-frequency thresholds, particularly in the 40-59 years old cohort. Furthermore, some serum PUFAs were positively associated with both hearing threshold subgroups in women. Conclusion Some PUFAs tend to be beneficial for low-frequency hearing status and detrimental to the high-frequency hearing threshold. The male sex may play a protective role in this association, while the female sex and middle age may be detrimental in the effect of PUFAs on hearing function.
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Affiliation(s)
- Lili Long
- Department of Otorhinolaryngology, Sichuan University Hospital of Sichuan University, Chengdu, China
| | - Zhenchao Jia
- Department of Prevention and Health Care, Sichuan University Hospital of Sichuan University, Chengdu, China,*Correspondence: Zhenchao Jia
| | - Xinghua Tang
- Department of Otorhinolaryngology Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China,Xinghua Tang
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Paik CB, Pei M, Oghalai JS. Review of blast noise and the auditory system. Hear Res 2022; 425:108459. [PMID: 35181171 PMCID: PMC9357863 DOI: 10.1016/j.heares.2022.108459] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 11/22/2022]
Abstract
The auditory system is particularly vulnerable to blast injury due to the ear's role as a highly sensitive pressure transducer. Over the past several decades, studies have used a variety of animal models and experimental procedures to recreate blast-induced acoustic trauma. Given the developing nature of this field and our incomplete understanding of molecular mechanisms underlying blast-related auditory disturbances, an updated discussion about these studies is warranted. Here, we comprehensively review well-established blast-related auditory pathology including tympanic membrane perforation and hair cell loss. In addition, we discuss important mechanistic studies that aim to bridge gaps in our current understanding of the molecular and microstructural events underlying blast-induced cochlear, auditory nerve, brainstem, and central auditory system damage. Key findings from the recent literature include the association between endolymphatic hydrops and cochlear synaptic loss, blast-induced neuroinflammatory markers in the peripheral and central auditory system, and therapeutic approaches targeting biochemical markers of blast injury. We conclude that blast is an extreme form of noise exposure. Blast waves produce cochlear damage that appears similar to, but more extreme than, the standard noise exposure protocols used in auditory research. However, experimental variations in studies of blast-induced acoustic trauma make it challenging to compare and interpret data across studies.
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Affiliation(s)
- Connie B Paik
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA USA
| | - Michelle Pei
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA USA
| | - John S Oghalai
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA USA.
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14
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Liang C, Fang Q, Chen H, Wang Z, Qiao X, Liao Y, Lv C, Chen M, Li L, Yang J. Vulnerable frequency as an independent prognostic factor for sudden sensorineural hearing loss. Front Neurol 2022; 13:962376. [PMID: 36237617 PMCID: PMC9552834 DOI: 10.3389/fneur.2022.962376] [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: 06/06/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectivesSudden sensorineural hearing loss (SSNHL) is a common otology emergency in the practice. Its severe hearing impairment and prognosis impair the quality of life. Given that cochlear hair cell vulnerability is not consistent across frequencies, this study aims to investigate the impact of frequency-specific hearing loss on prognosis in SSNHL.MethodsThe study included 255 patients with full-frequency SSNHL. The baseline, clinical, and hearing characteristics, as well as possible cardiovascular predictors in blood, were collected for analysis.ResultsThe 4,000 and 8,000 Hz hearing levels in the responder group were significantly lower than those in the non-responder group (p = 0.008, p < 0.001), while the average hearing was not (p = 0.081). Logistic regression showed that only vertigo (OR, 95% CI, 0.265, 0.102–0.684, p = 0.006) and 8,000 Hz hearing level (OR, 95% CI, 0.943, 0.916–0.971, p < 0.001) were strongly associated with treatment outcome.ConclusionsCompared with other frequencies, 8,000 Hz hearing level was closely related to prognosis in SSNHL. In an adjusted model, our study did not find an effect of mean hearing on prognosis in SSNHL. However, further multicenter prospective studies are needed for validation.
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15
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Vasconcelos CACD, Schiavoni MCL, Angelo Hyppolito M, Marques W. Morphological and morphometric study of the superior vestibular nerve trunk in guinea pigs. Anat Rec (Hoboken) 2022. [DOI: 10.1002/ar.25053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Maria Cristina Lopes Schiavoni
- Department of Neurosciences School of Medicine of Ribeirão Preto, University of São Paulo (USP) Ribeirão Preto SP Brazil
| | - Miguel Angelo Hyppolito
- Department of Ophthalmology, Otolaryngology, and Head and Neck Surgery School of Medicine of Ribeirão Preto, University of São Paulo (USP) Ribeirão Preto SP Brazil
| | - Wilson Marques
- Department of Neurosciences School of Medicine of Ribeirão Preto, University of São Paulo (USP) Ribeirão Preto SP Brazil
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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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17
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18
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Yee J, Han HW, Gwak HS. Proton pump inhibitor use and hearing loss in patients with type 2 diabetes: evidence from a hospital-based case-control study and a population-based cohort study. Br J Clin Pharmacol 2021; 88:2738-2746. [PMID: 34970788 DOI: 10.1111/bcp.15210] [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: 09/30/2021] [Revised: 12/06/2021] [Accepted: 12/21/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES This study aimed to investigate the association between proton pump inhibitor (PPI) use and risk of sensorineural hearing loss (SNHL) or tinnitus in patients with type 2 diabetes using hospital- and population-based data. METHODS For the case-control study using the Asan biomedical research environment (ABLE) database, the characteristics between cases and sex-, age-, and index-year-matched controls were compared by the chi-squared test. Conditional logistic regression was used to estimate the odds ratios (ORs). For the cohort study using the Korean National Health Insurance Service-National Sample Cohort, the hazard ratios (HRs) for SNHL or tinnitus associated with PPI use were analyzed by the Cox proportional hazard regression model. RESULTS The case-control study included 1,379 cases and 5,512 matched controls. After adjustment, PPI use was associated with an increased risk of SNHL or tinnitus (OR: 1.61, 95% CI: 1.30-1.99). The ORs were higher for current or recent use of PPI and high average daily dose. In the cohort study including 17,233 pairs of PPI users and non-users after propensity score matching, the risk of SNHL or tinnitus increased in PPI users compared with non-users (HR: 1.50, 95% CI: 1.40-1.61). In the stratified analyses, risks remained significant, and the magnitude of association was relatively high in those of younger age, patients without gastroesophageal reflux disease, and patients not receiving histamine 2 receptor blockers. CONCLUSIONS Our study suggests that PPI use is associated with an increased risk of SNHL or tinnitus. Given the widespread use of PPIs, the potential ototoxic effects of PPIs remain an important concern.
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Affiliation(s)
- Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
| | - Hye Won Han
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea.,Department of Pharmacy, Asan Medical Center, Seoul, South Korea
| | - Hye Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
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19
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Zheng Z, Liu C, Shen Y, Xia L, Xiao L, Sun Y, Wang H, Chen Z, Wu Y, Shi H, Feng Y, Yin S. Serum Albumin Levels as a Potential Marker for the Predictive and Prognostic Factor in Sudden Sensorineural Hearing Loss: A Prospective Cohort Study. Front Neurol 2021; 12:747561. [PMID: 34733230 PMCID: PMC8558374 DOI: 10.3389/fneur.2021.747561] [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: 07/26/2021] [Accepted: 09/17/2021] [Indexed: 11/22/2022] Open
Abstract
Objectives: As a common otology emergency, sudden sensorineural hearing loss (SSNHL) has a great impact on quality of life. The diagnosis and treatment of SSNHL remain challenging. This study aims to identify and investigate the association of liver functions with SSNHL. Methods: A total of 135 SSNHL patients and 135 sex- and age-matched controls were prospectively enrolled. The baseline and clinical characteristics, along with liver function levels of participators, were collected. Linear correlation, logistic regression, and receiving operator characteristic curve analysis tests were applied to examine the association between liver function levels and SSNHL. Results: There were no differences in baseline characteristics between SSNHL and control groups. The albumin (ALB) level of the SSNHL group was significantly lower than that in the control group (p < 0.001). The logistic regression showed that the low ALB level may be a predictive factor of SSNHL with an adjusted OR of 0.809 (95% CI, 0.742–0.882, p < 0.001). By comparing the indicators of different prognosis groups, we found that the effective group had a significantly lower hearing impair onset and higher ALB (p = 0.001) and AGR (p = 0.003) levels than the ineffective group. Logistic regression revealed that the hearing level onset (OR, 0.976; 95% CI, 0.956–0.997; p = 0.026) and ALB level (OR, 1.181; 95% CI, 1.071–1.301; p = 0.001) showed strong associations with treatment outcome. Conclusions: Lower ALB levels, within the normal ranges, were associated with the occurrence and unfavorable outcome of SSNHL. However, further research on the underlying mechanisms needs to be conducted.
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Affiliation(s)
- Zhong Zheng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Chengqi Liu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Ying Shen
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Liang Xia
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Lili Xiao
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Yuanyuan Sun
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Hui Wang
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Zhengnong Chen
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Yaqin Wu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Haibo Shi
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Yanmei Feng
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Shankai Yin
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
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Samocha-Bonet D, Wu B, Ryugo DK. Diabetes mellitus and hearing loss: A review. Ageing Res Rev 2021; 71:101423. [PMID: 34384902 DOI: 10.1016/j.arr.2021.101423] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 07/26/2021] [Accepted: 08/05/2021] [Indexed: 12/17/2022]
Abstract
Diabetes (type 2) and sensorineural hearing loss are common health problems manifested with ageing. While both type 1 and type 2 diabetes have been associated with hearing loss, a causal link has been difficult to establish. Individuals with diabetes have twice the incidence of hearing loss compared to those without diabetes and those with prediabetes have a 30% higher rate of hearing loss. Whether hearing loss is associated with diabetes independent of glycemic control remains to be determined. Hearing loss has its own set of risk factors and shares others with diabetes. This review will summarize the complex relationship between diabetes and sensorineural hearing loss.
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Affiliation(s)
- Dorit Samocha-Bonet
- Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia; St Vincent's Clinical School, UNSW Sydney, Darlinghurst, NSW, 2010, Australia.
| | - Buffy Wu
- Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia; School of Medical Sciences, UNSW Sydney, Kensington, NSW, 2052, Australia
| | - David K Ryugo
- Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia; School of Medical Sciences, UNSW Sydney, Kensington, NSW, 2052, Australia; Department of Otolaryngology Head and Neck and Skull Base Surgery, St. Vincent's Hospital, Darlinghurst, NSW, 2010, Australia
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21
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Dahm V, Gausterer JC, Auinger AB, Honeder C, Gabor F, Reznicek G, Kaider A, Riss D, Arnoldner C. Evaluation of Levels of Triamcinolone Acetonide in Human Perilymph and Plasma After Intratympanic Application in Patients Receiving Cochlear Implants: A Randomized Clinical Trial. JAMA Otolaryngol Head Neck Surg 2021; 147:974-980. [PMID: 34591079 PMCID: PMC8485207 DOI: 10.1001/jamaoto.2021.2492] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance The use of intratympanically applied steroids is of increasing interest. Consequently, research has focused on finding an ideal drug that diffuses through the round window membrane and can be retained in the perilymph. Objective To compare levels of triamcinolone acetonide (TAC) in perilymph and plasma after intratympanic injection. Design, Setting, and Participants This randomized clinical trial included 40 patients receiving cochlear implants at a single tertiary care center in Vienna, Austria. Patients were randomized to 1 of 4 treatment groups receiving 1 of 2 intratympanic doses of TAC (10 mg/mL or 40 mg/mL) at 1 of 2 approximate time points (24 hours or 1 hour) before sampling the perilymph. Inclusion was carried out between November 2017 and January 2020, and data were analyzed in December 2020. Interventions All patients underwent intratympanic injection of TAC. During cochlear implantation, perilymph and plasma were sampled for further analysis. Main Outcomes and Measures Levels of TAC measured in perilymph and plasma. Results Among the 37 patients (median [range] age, 57 [26-88] years; 18 [49%] men) included in the analysis, TAC was present at a median (range) level of 796.0 (46.4-7706.7) ng/mL. In the majority of patients (n = 29; 78%), no drug was detectable in the plasma after intratympanic injection. Levels above the limit of detection were less than 2.5 ng/mL. The 1-factorial analysis of variance model showed lower TAC levels in the group that received TAC, 10 mg/mL, 24 hours before surgery (median, 271 ng/mL) compared with the group that received TAC, 10 mg/mL, 1 hour before surgery (median, 2877 ng/mL), as well as in comparison with the groups receiving TAC, 40 mg/mL, 24 hours before surgery (median, 2150 ng/mL) and 1 hour before surgery (median, 939 ng/mL). The 2-factorial analysis of variance model showed lower TAC levels in the group receiving TAC, 10 mg/mL, 24 hours before surgery than the group receiving TAC, 10 mg/mL, 1 hour before surgery, and higher TAC levels in the group receiving TAC, 40 mg/mL, 24 hours before surgery compared with the group receiving TAC, 10 mg/mL, 24 hours before surgery. Patients with thickening of the middle ear had statistically significantly higher plasma levels (median, 1.4 ng/mL vs 0 ng/mL) and lower perilymph levels (median, 213.1 ng/mL vs 904 ng/mL) than individuals with unremarkable middle ear mucosa. Conclusions and Relevance In this randomized clinical trial, TAC was shown to be a promising drug for intratympanic therapies, with similar levels in perilymph 1 hour and 24 hours after injection (distinctly in the groups receiving the 40 mg/mL dose). There was also minimal dissemination to the plasma, especially in patients with unremarkable middle ear mucosa. Trial Registration ClinicalTrials.gov Identifier: NCT03248856.
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Affiliation(s)
- Valerie Dahm
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - Julia Clara Gausterer
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Austria
| | - Alice Barbara Auinger
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - Clemens Honeder
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - Franz Gabor
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Austria
| | | | - Alexandra Kaider
- Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Dominik Riss
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - Christoph Arnoldner
- Department of Otorhinolaryngology-Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
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22
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Asgarbeik S, Vahidi A, Yazdani N, Tajdini A, Amoli MM. VEGFA gene haplotypes in Meniere's disease. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Yévenes-Briones H, Caballero FF, Struijk EA, Lana A, Rodríguez-Artalejo F, Lopez-Garcia E. Dietary fat intake and risk of disabling hearing impairment: a prospective population-based cohort study. Eur J Nutr 2021; 61:231-242. [PMID: 34287672 PMCID: PMC8783872 DOI: 10.1007/s00394-021-02644-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/16/2021] [Indexed: 11/25/2022]
Abstract
Purpose To examine the associations of specific dietary fats with the risk of disabling hearing impairment in the UK Biobank study. Methods This cohort study investigated 105,592 participants (47,308 men and 58,284 women) aged ≥ 40 years. Participants completed a minimum of one valid 24-h recall (Oxford Web-Q). Dietary intake of total fatty acids, polyunsaturated fatty acids (PUFA), saturated fatty acids (SFA), and monounsaturated fatty acids (MUFA) was assessed at baseline. Functional auditory capacity was measured with a digit triplet test (DTT), and disabling hearing impairment was defined as a speech reception threshold in noise > − 3.5 dB in any physical exam performed during the follow-up. Results Over a median follow-up of 3.2 (SD: 2.1) years, 832 men and 872 women developed disabling hearing impairment. After adjustment for potential confounders, including lifestyles, exposure to high-intensity sounds, ototoxic medication and comorbidity, the hazard ratios (HRs), and 95% confidence interval (CI) of disabling hearing function, comparing extreme quintiles of intakes were 0.91 (0.71–1.17) for total fat, 1.09 (0.83–1.44) for PUFA, 0.85 (0.64–1.13) for SFA and 1.01 (0.74–1.36) for MUFA among men. Among women, HRs comparing extreme intakes were 0.98 (0.78–1.24) for total fat, 0.69 (0.53–0.91) for PUFA, 1.26 (0.96–1.65) for SFA, and 0.91 (0.68–1.23) for MUFA. Replacing 5% of energy intake from SFA with an equivalent energy from PUFA was associated with 25% risk reduction (HR: 0.75; 95% CI: 0.74–0.77) among women. Conclusions PUFA intake was associated with decreased risk of disabling hearing function in women, but not in men. Supplementary Information The online version contains supplementary material available at 10.1007/s00394-021-02644-7.
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Affiliation(s)
- Humberto Yévenes-Briones
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid-IdiPaz and CIBERESP (CIBER of Epidemiology and Public Health), C/ Arzobispo Morcillo, s/n, 28029, Madrid, Spain.
| | - Francisco Félix Caballero
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid-IdiPaz and CIBERESP (CIBER of Epidemiology and Public Health), C/ Arzobispo Morcillo, s/n, 28029, Madrid, Spain
| | - Ellen A Struijk
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid-IdiPaz and CIBERESP (CIBER of Epidemiology and Public Health), C/ Arzobispo Morcillo, s/n, 28029, Madrid, Spain
| | - Alberto Lana
- Department of Medicine, School of Medicine and Health Sciences, Universidad de Oviedo /ISPA, Oviedo, Spain
| | - Fernando Rodríguez-Artalejo
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid-IdiPaz and CIBERESP (CIBER of Epidemiology and Public Health), C/ Arzobispo Morcillo, s/n, 28029, Madrid, Spain
- IMDEA-Food Institute, CEI UAM+CSIC, Madrid, Spain
| | - Esther Lopez-Garcia
- Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid-IdiPaz and CIBERESP (CIBER of Epidemiology and Public Health), C/ Arzobispo Morcillo, s/n, 28029, Madrid, Spain.
- IMDEA-Food Institute, CEI UAM+CSIC, Madrid, Spain.
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Baiduc RR, Ramsey M, Sanders A, Vance EA. Association Between Nonoptimal Blood Pressure and Cochlear Function. Ear Hear 2021; 42:393-404. [PMID: 32826511 DOI: 10.1097/aud.0000000000000937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The association between hearing loss and risk factors for cardiovascular disease, including high blood pressure (BP), has been evaluated in numerous studies. However, data from population- and laboratory-based studies remain inconclusive. Furthermore, most prior work has focused on the effects of BP level on behavioral hearing sensitivity. In this study, we investigated cochlear integrity using distortion product otoacoustic emissions (DPOAEs) in persons with subtle elevation in BP levels (nonoptimal BP) hypothesizing that nonoptimal BP would be associated with poorer cochlear function. DESIGN Sixty individuals [55% male, mean age = 31.82 (SD = 11.17) years] took part in the study. The authors measured pure-tone audiometric thresholds from 0.25 to 16 kHz and computed four pure-tone averages (PTAs) for the following frequency combinations (in kHz): PTA0.25, 0.5, 0.75, PTA1, 1.5, 2, 3, PTA4, 6, 8, and PTA10, 12.5, 16. DPOAEs at the frequency 2f1-f2 were recorded for L1/L2 = 65/55 dB SPL using an f2/f1 ratio of 1.22. BP was measured, and subjects were categorized as having either optimal BP (systolic/diastolic <120 and <80 mm Hg) or nonoptimal BP (systolic ≥120 or diastolic ≥80 mm Hg or use of antihypertensives). Between-group differences in behavioral thresholds and DPOAE levels were evaluated using 95% confidence intervals. Pearson product-moment correlations were run to assess the relationships between: (1) thresholds (all four PTAs) and BP level and (2) DPOAE [at low (f2 ≤ 2 kHz), mid (f2 > 2 kHz and ≤10 kHz), and high (f2 > 10 kHz) frequency bins] and BP level. Linear mixed-effects models were constructed to account for the effects of BP status, stimulus frequency, age and sex on thresholds, and DPOAE amplitudes. RESULTS Significant positive correlations between diastolic BP and all four PTAs and systolic BP and PTA0.25, 0.5, 0.75 and PTA4, 6, 8 were observed. There was not a significant effect of BP status on hearing thresholds from 0.5 to 16 kHz after adjustment for age, sex, and frequency. Correlations between diastolic and systolic BP and DPOAE levels were statistically significant at the high frequencies and for the relationship between diastolic BP and DPOAE level at the mid frequencies. Averaged across frequency, the nonoptimal BP group had DPOAE levels 1.50 dB lower (poorer) than the optimal BP group and differences were statistically significant (p = 0.03). CONCLUSIONS Initial findings suggest significant correlations between diastolic BP and behavioral thresholds and diastolic BP and mid-frequency DPOAE levels. However, adjusted models indicate other factors are more important drivers of impaired auditory function. Contrary to our hypothesis, we found that subtle BP elevation was not associated with poorer hearing sensitivity or cochlear dysfunction. We consider explanations for the null results. Greater elevation in BP (i.e., hypertension itself) may be associated with more pronounced effects on cochlear function, warranting further investigation. This study suggests that OAEs may be a viable tool to characterize the relationship between cardiometabolic risk factors (and in particular, stage 2 hypertension) and hearing health.
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Affiliation(s)
- Rachael R Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, Boulder, Colorado, USA
| | - Michael Ramsey
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado, USA
| | - Amy Sanders
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, Boulder, Colorado, USA
| | - Eric A Vance
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado, USA
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Ting J, Jiang K, Du S, Betz J, Reed N, Power MC, Gottesman R, Sharrett AR, Griswold M, Walker KA, Miller ER, Lin FR, Deal JA. Longitudinal Blood Pressure Patterns from Mid-to-Late Life and Late-life Hearing Loss in the Atherosclerosis Risk in Communities Study. J Gerontol A Biol Sci Med Sci 2021; 77:640-646. [PMID: 34043799 DOI: 10.1093/gerona/glab153] [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: 01/18/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Hearing loss is prevalent and associated with adverse functional outcomes in older adults. Prevention thus has far-reaching implications, yet few modifiable risk factors have been identified. Hypertension may contribute to age-related hearing loss, but epidemiologic evidence is mixed. We studied a prospective cohort of 3,343 individuals from the Atherosclerosis Risk in Communities study, aged 44-65 years at baseline with up to 30 years of follow-up. METHODS Hearing was assessed in late-life (2016-17) using a better-ear audiometric pure tone average (PTA, 0.5, 1, 2, 4 kHz) and the Quick Speech-in-Noise (QuickSIN) test. Hypertension was defined as systolic blood pressure ≥140 mmHg, diastolic blood pressure ≥90 mmHg or antihypertensive medication use. Mid-life hypertension was defined by hypertension at two consecutive visits between 1987-89 and 1996-98. Late-life hypertension was defined in 2016-17. Late-life low blood pressure was defined as systolic blood pressure <90 mmHg or diastolic blood pressure <60 mmHg, irrespective of antihypertensive medication use. Associations between blood pressure patterns from mid-to-late-life and hearing outcomes were assessed using multivariable-adjusted linear regression. RESULTS Compared to persistent normotension, persistent hypertension from mid-to-late-life was associated with worse central auditory processing (difference in QuickSIN score = -0.66 points, 95% CI: -1.14, -0.17) but not with audiometric hearing. CONCLUSIONS Participants with persistent hypertension had poorer late-life central auditory processing. These findings suggest that hypertension may be more strongly related to hearing-related changes in the brain than in the cochlea.
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Affiliation(s)
- James Ting
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - Kening Jiang
- Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - Simo Du
- Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - Joshua Betz
- Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA.,Center on Aging and Health, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Nicholas Reed
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - Melinda C Power
- Department of Epidemiology and Biostatistics, Milken Institute School of Public Health, George Washington University, Washington, DC, USA
| | - Rebecca Gottesman
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.,Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - A Richey Sharrett
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.,Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Michael Griswold
- Department of Data Science, The University of Mississippi Medical Center, Jackson, MS, USA
| | - Keenan A Walker
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, Baltimore, MD, USA
| | - Edgar Raymond Miller
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Department of Medicine, Division of General Internal Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Institute for Clinical and Translational Research, Johns Hopkins University, Baltimore, MD, USA
| | - Frank R Lin
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA.,Center on Aging and Health, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.,Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jennifer A Deal
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Cochlear Center for Hearing and Public Health, Johns Hopkins School of Public Health, Baltimore, MD, USA.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Park S, Kim MH, Choi I. Autonomic Nervous Function in Patients with Sudden Sensorineural Hearing Loss and Its Association with Prognosis and Disease Severity. Audiol Neurootol 2021; 26:303-309. [PMID: 33951629 DOI: 10.1159/000512462] [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: 07/30/2020] [Accepted: 10/21/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Vascular disorder is considered one of the main mechanisms of sudden sensorineural hearing loss (SSNHL) due to the anatomy of the inner ear. One factor that can contribute to vascular disorder is impairment in the autonomic nervous system. This study aims to investigate autonomic function in patients with SSNHL and its association with prognosis and disease severity from January 2018 to October 2019. METHODS We conducted a cross-sectional study involving 40 healthy controls and 55 subjects with SSNHL. We compared the autonomic function of controls and patients using heart rate variability (HRV). SSNHL patients were divided into improvement and no-improvement groups and into mild and severe groups according to pure-tone audiometry results. RESULTS The SSNHL group had significantly decreased total power (TP), low frequency (LF), and high frequency (HF) compared to the control group. However, there were no significant differences between the mild and severe groups. In the no-improvement group, LF was significantly higher and normalized HF was significantly lower than in the improvement group. According to a multiple logistic regression analysis, age and LF were significantly correlated with improvement. CONCLUSION This is the first study to evaluate the significance of HRV in patients with SSNHL, according to prognosis and disease severity. Further studies about the relationship between autonomic nervous system and SSNHL with larger sample size and prospective design are needed.
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Affiliation(s)
- Soyoung Park
- Department of Ophthalmology, Otorhinolaryngology, and Dermatology of Korean Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Min Hee Kim
- Department of Ophthalmology, Otorhinolaryngology, and Dermatology of Korean Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Inhwa Choi
- Department of Ophthalmology, Otorhinolaryngology, and Dermatology of Korean Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
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The Physiologic Role of Corticosteroids in Menière's Disease: An Update on Glucocorticoid-mediated Pathophysiology and Corticosteroid Inner Ear Distribution. Otol Neurotol 2021; 41:271-276. [PMID: 31821251 DOI: 10.1097/mao.0000000000002467] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
: There are multiple treatment options for Ménière's disease (MD), including dietary modifications, aminoglycoside therapy, and surgery. All have limitations, ranging from limited effectiveness to permanent hearing loss. Corticosteroids have long been used to manage MD due to their relative efficacy and tolerability, but the exact mechanism for disease alleviation is uncertain. Until recently, the precise distribution and role that glucocorticoid receptors play in inner ear diseases have remained largely uninvestigated. Several studies propose they influence mechanisms of fluid regulation through ion and water homeostasis. This review will provide an update on the basic science literature describing the activity of endogenous glucocorticoids and exogenous corticosteroids in the inner ear and the relevance to MD, as well as early clinical trial data pertaining to the application of novel technologies for more effective administration of corticosteroids for the treatment of MD.
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Nakata T, Okada M, Hanari T, Takagi T, Fujiwara T, Hato N. Association of the prognosis and severity of idiopathic sudden sensorineural hearing loss with cervical ultrasonographic findings. Auris Nasus Larynx 2021; 48:1074-1080. [PMID: 33745790 DOI: 10.1016/j.anl.2021.03.004] [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: 12/24/2020] [Revised: 02/19/2021] [Accepted: 03/02/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the association of the prognosis and severity of idiopathic sudden sensorineural hearing loss (ISSNHL) with cervical ultrasonographic findings suggestive of cardiovascular risk. METHODS Seventy-four inpatients with ISSNHL were included in our study. Cervical ultrasonography was performed to evaluate the common carotid artery (CCA), internal carotid artery (ICA), and vertebral artery (VA). The peak systolic velocity, end diastolic velocity, intima-media thickness, pulsatility index (PI), and resistance index (RI) were evaluated. We investigated the relationship of these variables with the severity and prognosis of ISSNHL. RESULTS ICA-PI, ICA-RI, and CCA-RI were significantly higher in patients with poor hearing prognosis than in those with good prognosis. The variables of VA were not related to the prognosis of ISSNHL. There were no statistically significant differences between ISSNHL severity and cervical ultrasonographic findings. CONCLUSIONS We found that PI and RI might be prognostic factors for ISSNHL.
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Affiliation(s)
- Takahiro Nakata
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon Ehime 791-0295, Japan
| | - Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon Ehime 791-0295, Japan.
| | - Takahiro Hanari
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon Ehime 791-0295, Japan
| | - Taro Takagi
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon Ehime 791-0295, Japan
| | - Takashi Fujiwara
- Department of Public Health Research, Kurashiki Clinical Research Institute, Kurashiki, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon Ehime 791-0295, Japan
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30
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Touska P, Connor S. Imaging of the temporal bone. Clin Radiol 2020; 75:658-674. [DOI: 10.1016/j.crad.2020.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
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Rinaldi M, Cavallaro G, Cariello M, Scialpi N, Quaranta N. Metabolic syndrome and idiopathic sudden sensori-neural hearing loss. PLoS One 2020; 15:e0238351. [PMID: 32857825 PMCID: PMC7454951 DOI: 10.1371/journal.pone.0238351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 08/14/2020] [Indexed: 01/27/2023] Open
Abstract
The purpose of this study was to evaluate the association between the presence of Metabolic Syndrome (MetS) and idiopathic sudden sensorineural hearing loss (ISSHL) and the impact of MetS on recovery of patients with ISSHL. 39 Patients with ISSHL and 44 controls were enrolled in this study. Demographic, clinical characteristics and hearing recovery were evaluated. MetS was defined according to the diagnostic criteria of International Diabetes Federation (IDF) consensus definition. Patients affected by ISSHL presented a body mass index (BMI), waist circumference, waist hip ratio (WHR), fasting glucose and blood pressure significantly higher compared to controls. Considering patients with central obesity, 5 controls and 15 ISSHL patients met the criteria of MetS. According to Siegel criteria, a complete or partial recovery was observed in 60% of patients with MetS and in 91,66% of patients without MetS. MetS was associated with ISSHL and this association negatively influenced the hearing recovery of these patients.
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Affiliation(s)
- Massimo Rinaldi
- Otolaryngology Unit, Department of Biomedical Sciences, Neuroscience and Sensory Organs, University of Bari “Aldo Moro”, Bari, Italy
| | - Giada Cavallaro
- Otolaryngology Unit, Department of Biomedical Sciences, Neuroscience and Sensory Organs, University of Bari “Aldo Moro”, Bari, Italy
| | - Marica Cariello
- Clinica Medica Cesare Frugoni, Department of Interdisciplinary Medicine, University of Bari Aldo Moro “Aldo Moro”, Bari, Italy
| | - Natasha Scialpi
- Clinica Medica Cesare Frugoni, Department of Interdisciplinary Medicine, University of Bari Aldo Moro “Aldo Moro”, Bari, Italy
| | - Nicola Quaranta
- Otolaryngology Unit, Department of Biomedical Sciences, Neuroscience and Sensory Organs, University of Bari “Aldo Moro”, Bari, Italy
- * E-mail:
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Basilar artery tortuosity as a predictive factor for the efficacy of heparin adjuvant therapy in unilateral idiopathic sudden sensorineural hearing loss. Braz J Otorhinolaryngol 2020; 88:381-389. [PMID: 32859564 PMCID: PMC9422706 DOI: 10.1016/j.bjorl.2020.06.017] [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: 04/15/2020] [Revised: 06/09/2020] [Accepted: 06/25/2020] [Indexed: 11/29/2022] Open
Abstract
Introduction Cochlear ischemia is hypothesized as one of the major etiologies of idiopathic sudden sensorineural hearing loss. Therefore, anticoagulant therapies are designed to be beneficial in certain patients with this condition. Objective This study aimed to determine which patients with idiopathic sudden sensorineural hearing loss would benefit from heparin treatment as adjuvant therapy. Methods In total, 134 patients who underwent magnetic resonance imaging for unilateral idiopathic sudden sensorineural hearing loss at a tertiary referral hospital between January 2014 and December 2018 were included in this retrospective study. All patients received Intratympanic steroid injections or heparin therapy plus oral corticosteroids. Radiological parameters of the vertebrobasilar system and clinical data from pre- and post-treatment assessments were analyzed. Results Most patients (71.6%) had a tortuous basilar artery The 65 patients with severe-to-profound idiopathic sudden sensorineural hearing loss showed a significant relationship between idiopathic sudden sensorineural hearing loss laterality and basilar artery displacement to the opposite side (p = 0.036), while the 69 patients with mild-to-moderate idiopathic sudden sensorineural hearing loss did not (p = 0.950). Additionally, the degree of basilar artery tortuosity was significantly associated with the degree of hearing impairment in the severe-to-profound idiopathic sudden sensorineural hearing loss group (p = 0.015). When idiopathic sudden sensorineural hearing loss occurred on the opposite side to basilar artery displacement, the improvement of hearing was significantly greater in patients treated with heparin than in those treated with intratympanic steroids (p = 0.041). Conclusion In a subset of patients with severe-to-profound idiopathic sudden sensorineural hearing loss, basilar artery tortuosity had a significant directional relationship with idiopathic sudden sensorineural hearing loss laterality. In these selected patients, a significant effect of heparin therapy on improving hearing was observed.
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Hayashi Y, Suzuki H, Nakajima W, Uehara I, Tanimura A, Himeda T, Koike S, Katsuno T, Kitajiri SI, Koyanagi N, Kawaguchi Y, Onomoto K, Kato H, Yoneyama M, Fujita T, Tanaka N. Cochlear supporting cells function as macrophage-like cells and protect audiosensory receptor hair cells from pathogens. Sci Rep 2020; 10:6740. [PMID: 32317718 PMCID: PMC7174420 DOI: 10.1038/s41598-020-63654-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/01/2020] [Indexed: 12/25/2022] Open
Abstract
To protect the audiosensory organ from tissue damage from the immune system, the inner ear is separated from the circulating immune system by the blood-labyrinth barrier, which was previously considered an immune-privileged site. Recent studies have shown that macrophages are distributed in the cochlea, especially in the spiral ligament, spiral ganglion, and stria vascularis; however, the direct pathogen defence mechanism used by audiosensory receptor hair cells (HCs) has remained obscure. Here, we show that HCs are protected from pathogens by surrounding accessory supporting cells (SCs) and greater epithelial ridge (GER or Kölliker’s organ) cells (GERCs). In isolated murine cochlear sensory epithelium, we established Theiler’s murine encephalomyelitis virus, which infected the SCs and GERCs, but very few HCs. The virus-infected SCs produced interferon (IFN)-α/β, and the viruses efficiently infected the HCs in the IFN-α/β receptor-null sensory epithelium. Interestingly, the virus-infected SCs and GERCs expressed macrophage marker proteins and were eliminated from the cell layer by cell detachment. Moreover, lipopolysaccharide induced phagocytosis of the SCs without cell detachment, and the SCs phagocytosed the bacteria. These results reveal that SCs function as macrophage-like cells, protect adjacent HCs from pathogens, and provide a novel anti-infection inner ear immune system.
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Affiliation(s)
- Yushi Hayashi
- Department of Molecular Oncology, Institute for Advanced Medical Sciences, Nippon Medical School, Tokyo, Japan
| | - Hidenori Suzuki
- Division of Morphological and Biomolecular Research, Nippon Medical School, Tokyo, Japan
| | - Wataru Nakajima
- Department of Molecular Oncology, Institute for Advanced Medical Sciences, Nippon Medical School, Tokyo, Japan
| | - Ikuno Uehara
- Department of Molecular Oncology, Institute for Advanced Medical Sciences, Nippon Medical School, Tokyo, Japan
| | - Atsuko Tanimura
- Department of Molecular Oncology, Institute for Advanced Medical Sciences, Nippon Medical School, Tokyo, Japan
| | - Toshiki Himeda
- Department of Microbiology, Kanazawa Medical University School of Medicine, Ishikawa, Japan
| | - Satoshi Koike
- Neurovirology Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Tatsuya Katsuno
- Department of Otolaryngology, Head and Neck Surgery, Kyoto University, Kyoto, Japan
| | - Shin-Ichiro Kitajiri
- Department of Otolaryngology, Head and Neck Surgery, Kyoto University, Kyoto, Japan
| | - Naoto Koyanagi
- Division of Molecular Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yasushi Kawaguchi
- Division of Molecular Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Koji Onomoto
- Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Hiroki Kato
- Laboratory of Molecular Genetics, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Mitsutoshi Yoneyama
- Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Takashi Fujita
- Laboratory of Molecular Genetics, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Nobuyuki Tanaka
- Department of Molecular Oncology, Institute for Advanced Medical Sciences, Nippon Medical School, Tokyo, Japan.
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Relationship between the drainage pattern of the dural venous sinuses and hearing recovery in patients with sudden sensorineural hearing loss. Sci Rep 2020; 10:6013. [PMID: 32265530 PMCID: PMC7138857 DOI: 10.1038/s41598-020-62946-4] [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: 09/18/2019] [Accepted: 03/24/2020] [Indexed: 11/28/2022] Open
Abstract
Although cochlear venous insufficiency has been considered to cause sudden sensorineural hearing loss (SSHL), there is insufficient clinical evidence to support this hypothesis. We sought to determine whether there is a correlation between draining patterns of the dural venous sinuses and the side of the affected ear in SSHL, as well as hearing recovery. The medical records of 109 patients diagnosed with unilateral SSHL were retrospectively reviewed. Magnetic resonance images and pure tone audiometry were performed in all patients. We measured the dominance of the inferior petrosal sinus (IPS) and transverse-sigmoid sinus (TS/SS) ipsilateral to the affected ear. Most patients were characterized by asymmetric venous drainage (IPS, 53.2%; TS/SS, 81.7%). The dominant side of the IPS or TS/SS was independent of the side of the affected ear for all patients in this study. However, in 35 patients with early recovery within 2 weeks, the dominant side of TS/SS was significantly associated with the side of the affected ear (p = 0.011). Moreover, the dominance of both the IPS and TS/SS influenced hearing outcomes at 3 months. Dominant TS/SS ipsilateral to the affected ear, particularly in the presence of ipsilateral hypoplastic IPS, is associated with a favorable hearing prognosis of SSHL.
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Yıldız M, Baki̇ A, Özer ÖF. Serum Renin Levels in Sudden Sensorineural Hearing Loss. Ann Otol Rhinol Laryngol 2020; 129:806-812. [DOI: 10.1177/0003489420915221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Objective: The aim of this study was to investigate the serum renin levels of patients with idiopathic sudden sensorineural hearing loss (ISSNHL). Material and Methods: Twenty-four patients with ISSNHL and 24 asymptomatic healthy volunteers were included in the study. Subjects underwent pure-tone audiometry and serum renin levels were measured. Results: There were 14 women (mean age:42.35 ± 9.53) and 10 men (mean age:43.8 ± 6.87) in the patient group. There were 14 women (mean age:42.4 ± 4.7) and 10 men (mean age:41.4 ± 4.59) in the control group. ISSNHL was detected on the right side in 13 patients and on the left side in 11 patients. Serum renin levels of the patients and controls were 788.01 ± 327.8 and 282.37 ± 107.73 pg/mL, respectively. The serum renin levels were found to be significantly higher in the patient group compared to the control group ( P ≤ .001). There was a statistically significant strong positive correlation between serum renin level and the severity of hearing loss ( r = 0.77; P = .001). Conclusion: Serum renin levels of patients with ISSNHL were higher than controls. There was a statistically significant strong positive correlation between serum renin level and the severity of hearing loss.
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Affiliation(s)
- Muhammet Yıldız
- Antalya Training and Research Hospital, Otorhinolaryngology Department, Antalya, Turkey
| | - Ahmet Baki̇
- Uskudar State Hospital, Otorhinolaryngology Department, İstanbul, Turkey
| | - Ömer Faruk Özer
- Bezmialem Vakif University, Biochemistry Department, İstanbul, Turkey
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Dos Santos JC, Musso F, Mayer WP, Baptista JDS. Descriptive and topographical analysis of the labyrinthine artery in human fetuses. Anat Sci Int 2020; 95:374-380. [PMID: 32062763 DOI: 10.1007/s12565-020-00531-5] [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: 10/24/2019] [Accepted: 02/04/2020] [Indexed: 11/24/2022]
Abstract
Hearing or/and balance impairments may be caused by disorders of the labyrinthine artery (LA) and their branches. Most findings regarding the LA anatomy have been acquired through investigation of the cerebellopontine angle (CPA) in animal or adult human specimens. Eighty-eight CPAs and LAs of human fetuses were investigated using angio-techniques and microdissections. We found 15 intricate forms of distribution of LA. The LA usually originated from the extra-meatus loop in the anterior inferior cerebellar artery (AICA). The distribution of its terminal branches was 53.42% uni-arterial, 44.31% bi-arterial, and 2.27% tri-arterial systems. In the uni-arterial system, the LA described an anterior superior path to the cochlear nerve (CN) and originated its terminal branches in the gap between CN and the inferior part of the vestibular nerve. In the bi-arterial system, the anterior LA was located anterior and superior to the CN while the posterior LA appeared posterosuperior to the superior part of the vestibular nerve. In the tri-arterial system, the terminal branches originated directly from the AICA loop. Our results provide anatomical support to explain how compressions in the LA branches inside the internal acoustic meatus, as evoked by Schwannomas in the VII and VIII nerves, can lead to hearing and balance loss. The zone of the posterior vestibular nerve appeared to be a "safe area" for invasive procedures in these specimens.
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Affiliation(s)
| | - Fernando Musso
- Escola Superior de Ciencias da Santa Casa de Misericórdia de Vitoria, Vitoria, Brazil
| | - William Paganini Mayer
- Department of Medical Neuroscience at Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Josemberg Da Silva Baptista
- Laboratory of Applied Morphology (LEMA), Universidade Federal Do Espirito Santo, Marechal Campos Avenue, 1468, Maruipe, Vitoria, Espirito Santo, 29043-900, Brazil.
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Wiciński M, Malinowski B, Puk O, Górski K, Adamkiewicz D, Chojnacki G, Walczak M, Wódkiewicz E, Szambelan M, Adamska P, Skibińska K, Socha M, Słupski M, Pawlak-Osińska K. Possible Effects of Proton Pump Inhibitors on Hearing Loss Development. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4853695. [PMID: 31915695 PMCID: PMC6935450 DOI: 10.1155/2019/4853695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/24/2019] [Accepted: 07/09/2019] [Indexed: 12/14/2022]
Abstract
Considered safe and often available as over-the-counter (OTC) drugs, proton pump inhibitors (PPI) are one of the most frequently used medicines. Over recent years much research analyzing PPI has been conducted and these studies shed light on PPI side effects and the mechanisms of these processes. In this study we summarize the findings of these studies and through deduction present some hypotheses on the impact of PPI on health. Of particular interest is the impact of PPI on hearing loss development. However, despite this side effect being localized, its mechanisms are complex, systemic and involve changes in whole body. This paper summarizes how through, inter alia, alterations in the circulatory system, respiratory system, central nervous system and metabolism PPI can cause hearing impairment, which can occur in every age group and is connected with long-term use of this group of drugs. This article also discusses the role PPI plays in the acceleration of presbycusis development, in relation to the fact that older people are the group who most frequently use PPI in long term. Hearing loss negatively impacts affects quality of life, especially among older patients who are also the most afflicted group; administration of PPI should therefore be considered carefully, taking into consideration all potential benefits and side effects.
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Affiliation(s)
- Michał Wiciński
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Bartosz Malinowski
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Oskar Puk
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Karol Górski
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Dawid Adamkiewicz
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Grzegorz Chojnacki
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Maciej Walczak
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Eryk Wódkiewicz
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Monika Szambelan
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Paulina Adamska
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Kamila Skibińska
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Maciej Socha
- Department of Obstetrics, Gynecology and Gynecological Oncology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Ujejskiego 75, 85-168 Bydgoszcz, Poland
| | - Maciej Słupski
- Department of Hepatobiliary and General Surgery, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland
| | - Katarzyna Pawlak-Osińska
- Department of Pathophysiology of Hearing and Balance System, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
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38
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Koide Y, Teranishi M, Sugiura S, Uchida Y, Nishio N, Kato K, Otake H, Yoshida T, Otsuka R, Ando F, Shimokata H, Hasegawa Y, Nakashima T, Sone M. Association between Uncoupling Protein 2 Gene Ala55val Polymorphism and Sudden Sensorineural Hearing Loss. J Int Adv Otol 2019; 14:166-169. [PMID: 30100544 DOI: 10.5152/iao.2018.5442] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES The pathology of sudden sensorineural hearing loss, which is known as sudden deafness (SD), remains unknown. The purpose of this study was to investigate the association between mitochondrial uncoupling protein 2 (UCP2) polymorphism and SD risk. MATERIALS AND METHODS We compared 83 patients suffering from SD and 2048 controls who participated in the Longitudinal Study of Aging at the National Institute for Longevity Sciences. Multiple logistic regression was used to calculate the odds ratios (ORs) for SD with a polymorphism of the UCP2 (rs660339) gene. RESULTS Under the additive model of inheritance, UCP2 polymorphisms showed significant association with a SD risk. The OR was 1.468 (95% confidence interval, 1.056-2.040) with an adjustment for any past history, such as diabetes, dyslipidemia, or hypertension, and for age and sex. CONCLUSION Our results imply that the UCP2 (rs660339) polymorphism has a significant association with the risk of developing SD.
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Affiliation(s)
- Yusuke Koide
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaaki Teranishi
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Saiko Sugiura
- Toyota Josui Mental Clinic, Aichi, Japan; Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Yasue Uchida
- Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology, Aichi, Japan; Department of Otorhinolaryngology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Naoki Nishio
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ken Kato
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hironao Otake
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tadao Yoshida
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Rei Otsuka
- Section of National Institute for Longevity Sciences, Longitudinal Study of Aging Aichi, Japan
| | - Fujiko Ando
- Section of National Institute for Longevity Sciences, Longitudinal Study of Aging (NISL-LSA), National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Hiroshi Shimokata
- Graduate School of Nutritional Sciences, Nagoya University of Arts and Sciences, Aichi, Japan; Section of National Institute for Longevity Sciences, Longitudinal Study of Aging Aichi, Japan
| | - Yasuhisa Hasegawa
- Department of Head and Neck Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | | | - Michihiko Sone
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Leterme G, Guigou C, Oudot A, Collin B, Boudon J, Millot N, Geissler A, Belharet K, Bozorg Grayeli A. Superparamagnetic Nanoparticle Delivery to the Cochlea Through Round Window by External Magnetic Field: Feasibility and Toxicity. Surg Innov 2019; 26:646-655. [PMID: 31478462 DOI: 10.1177/1553350619867217] [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: 02/02/2023]
Abstract
Introduction. The objective of this study was to evaluate the feasibility and toxicity of superparamagnetic iron oxide nanoparticles (SPIONs) administered into the cochlea through the round window (RW) by an external magnetic field. Materials and Methods. In 5 Wistar rats, the left RW was punctured. SPIONs suspended in hyaluronic gel (5 mg/mL) were applied in the RW niche and covered by a muscle graft. The nanoparticles were mobilized using a rare earth magnet (0.54 T) held in 4 consecutive positions around the head. The right ear served as control. Hearing function was monitored by auditory brainstem responses (4-32 kHz tone bursts). Results. The auditory thresholds remained unchanged 1 month after the administration. The histological study of the cochleae showed that SPIONs were driven into the scala tympani in the basal turn, the second turn, and the apex. Conclusion. Superparamagnetic nanoparticles can be driven inside the cochlea toward the apex with a preserved hearing up to 1 month in rats.
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Affiliation(s)
- Gaëlle Leterme
- Otolaryngology Department, Dijon University Hospital, Dijon, France.,Laboratoire Imvia, Université Bourgogne-Franche-Comté, Dijon, France
| | - Caroline Guigou
- Otolaryngology Department, Dijon University Hospital, Dijon, France.,Laboratoire Imvia, Université Bourgogne-Franche-Comté, Dijon, France
| | | | - Bertrand Collin
- Centre Georges François Leclerc, Dijon, France.,ICMUB, UMR 6302 CNRS/Université Bourgogne Franche-Comté, Dijon, France
| | - Julien Boudon
- Laboratoire ICB, UMR 6303 CNRS/Université Bourgogne Franche-Comté, Dijon, France
| | - Nadine Millot
- Laboratoire ICB, UMR 6303 CNRS/Université Bourgogne Franche-Comté, Dijon, France
| | - Audrey Geissler
- Plateforme d'imagerie cellulaire CellImaP, Université Bourgogne-Franche-Comté, Dijon, France
| | - Karim Belharet
- Laboratoire PRISME, HEI Campus Centre, Châteauroux, France
| | - Alexis Bozorg Grayeli
- Otolaryngology Department, Dijon University Hospital, Dijon, France.,Laboratoire Imvia, Université Bourgogne-Franche-Comté, Dijon, France
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40
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Shi S, Zhou F, Wang W. 3D-real IR MRI of Meniere's disease with partial endolymphatic hydrops. Am J Otolaryngol 2019; 40:589-593. [PMID: 31113683 DOI: 10.1016/j.amjoto.2019.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/06/2019] [Accepted: 05/14/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVES A three-dimensional inversion-recovery sequence with real reconstruction (3D-real IR) sequence 4 h after intravenous gadolinium injection (IV) has been used to visualize the endolymphatic hydrops (ELH) in Meniere's disease (MD). This study was designed to explore the pathology of MD with partial ELH. METHODS We collected 338 patients with definite MD, all of whom underwent the IV method. Patients who were found to have partial ELH (vestibular or cochlear) were enrolled. The hearing thresholds of the enrolled patients were analyzed, the regions of interest of the cochlear perilymph and the cerebellum white matter were determined, and the signal intensity ratio in the former to the latter (CC ratio) for both sides in the patients was subsequently evaluated. RESULTS Of the 338 collected patients with definite MD, 19 patients (5.6%) had unilateral vestibular ELH (N = 18) or cochlear ELH (N = 1), and 4 patients (1.2%) with bilateral ELH had contralateral cochlear ELH. The CC ratio of the affected side (1.44 ± 0.46) was higher than that of the unaffected side (1.15 ± 0.33, P < 0.05) in the 19 patients with unilateral ELH. Conversely, there was no difference between the ratio of the contralateral side (1.18 ± 0.16) and the unaffected side (P > 0.05) in the 4 patients with bilateral ELH. CONCLUSIONS Partial vestibular ELH was more common than partial cochlear ELH in MD. Moreover, vestibular ELH, rather than cochlear ELH, may correlate with the elevated contrast effect in the affected side, which may better reflect the pathologic mechanism of MD.
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Affiliation(s)
- Suming Shi
- ENT Institute and Otorhinolaryngology Department, Affiliated Eye and ENT Hospital, Fudan University, Fenyang Road No. 83, Shanghai 200031, China; Key Laboratory of Hearing Medicine of National Health and Family Planning Commission (NHFPC), Fenyang Road No. 83, Shanghai 200031, China
| | - Feng Zhou
- Department of Otolaryngology - Head and Neck Surgery, Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, 817 Middle Road No. 602, Fuzhou, Fujian Province 350004, China
| | - Wuqing Wang
- ENT Institute and Otorhinolaryngology Department, Affiliated Eye and ENT Hospital, Fudan University, Fenyang Road No. 83, Shanghai 200031, China; Key Laboratory of Hearing Medicine of National Health and Family Planning Commission (NHFPC), Fenyang Road No. 83, Shanghai 200031, China.
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41
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Intratympanic Triamcinolone Acetonide as Treatment Option for Idiopathic Sudden Sensorineural Hearing Loss. Otol Neurotol 2019; 40:720-727. [DOI: 10.1097/mao.0000000000002283] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kaneva AM, Yanov YK, Bojko SG, Kudryavykh OE, Potolitsyna NN, Bojko ER, Odland JØ. The atherogenic index (ATH index) as a potential predictive marker of idiopathic sudden sensorineural hearing loss: a case control study. Lipids Health Dis 2019; 18:64. [PMID: 30876416 PMCID: PMC6419844 DOI: 10.1186/s12944-019-1016-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/10/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The importance of blood lipids in the pathogenesis of sudden sensorineural hearing loss (SSNHL) is widely discussed in the literature. However, the published results that hyperlipidaemia causes hearing problems are contradictory. The objective of this study was to establish whether increased lipid levels affect the risk of idiopathic SSNHL. METHODS A case-controlled study was conducted of 27 patients with idiopathic SSNHL and 24 healthy control subjects. All of the subjects underwent complete audiological examination. The plasma levels of total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), apolipoprotein (apo) A-I, apoB and apoE were measured with commercially available kits (Chronolab Systems, Spain). Several clinical ratios and indices of lipid metabolism were calculated. RESULTS Detailed analysis of lipid metabolism in patients with idiopathic SSNHL has shown that disturbances in auditory function are associated with increased atherogenicity of the lipid profile. However, there were no significant differences in the conventional parameters of lipid metabolism (TC, TG and HDL-C) between patients with idiopathic SSNHL and subjects in the control group. Higher values of the apoB/apoA-I ratio, atherogenic index of plasma (AIP) and atherogenic index (ATH index) in patients with SSNHL indicated increased atherogenicity of the lipid profile. Binary logistic regression analysis showed that of these three indices, only higher values of the ATH index were significantly associated with an increased risk of idiopathic SSNHL. CONCLUSIONS The ATH index can be used as a marker indicating the risk of idiopathic SSNHL when the conventional lipid indices are still normal.
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Affiliation(s)
- Anastasiya M Kaneva
- Institute of Physiology of Коmi Science Centre of the Ural Branch of the Russian Academy of Sciences, FRC Komi SC UB RAS, 50 Pervomayskaya str, Syktyvkar, 167982, Russia.
| | - Yury K Yanov
- St. Petersburg Research Institute of Ear, Throat, Nose and Speech, Ministry of Health of the Russian Federation, 9 Bronnitskaya str, St. Petersburg, 190013, Russia
| | - Svetlana G Bojko
- Medical Institute of Syktyvkar State University named after Pitirim Sorokin, Babushkina str., 11, Syktyvkar, Russia, 167001
| | - Olga E Kudryavykh
- St. Petersburg Research Institute of Ear, Throat, Nose and Speech, Ministry of Health of the Russian Federation, 9 Bronnitskaya str, St. Petersburg, 190013, Russia
| | - Natalya N Potolitsyna
- Institute of Physiology of Коmi Science Centre of the Ural Branch of the Russian Academy of Sciences, FRC Komi SC UB RAS, 50 Pervomayskaya str, Syktyvkar, 167982, Russia
| | - Evgeny R Bojko
- Institute of Physiology of Коmi Science Centre of the Ural Branch of the Russian Academy of Sciences, FRC Komi SC UB RAS, 50 Pervomayskaya str, Syktyvkar, 167982, Russia
| | - Jon Ø Odland
- Faculty of Health Sciences, NTNU, Norwegian University of Science and Technology, NTNU, NO-7491, Trondheim, Norway
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Eckert MA, Vaden KI, Dubno JR. Age-Related Hearing Loss Associations With Changes in Brain Morphology. Trends Hear 2019; 23:2331216519857267. [PMID: 31213143 PMCID: PMC6585256 DOI: 10.1177/2331216519857267] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 03/12/2019] [Accepted: 05/09/2019] [Indexed: 12/21/2022] Open
Abstract
Age-related hearing loss has been associated with varied auditory cortex morphology in human neuroimaging studies. These findings have suggested that peripheral auditory system declines cause changes in brain morphology but could also be due to latent variables that affect the auditory periphery and brain. The current longitudinal study was designed to evaluate these explanations for pure-tone threshold and brain morphology associations. Thirty adults (mean age at Time 1 = 64.12 ± 10.32 years) were studied at two time points (average duration between visits = 2.62 ± 0.81 years). Small- to medium-effect size associations were observed between high-frequency pure-tone thresholds and auditory cortex gray matter volume at each time point. Although there were significant longitudinal changes in low- and high-frequency hearing measures and brain morphology, those longitudinal changes were not significantly correlated across participants. High-frequency hearing measures at Time 1 were significantly related to more lateral ventricle expansion, such that participants with higher measures exhibited larger increases in ventricle size. This ventricle effect was statistically independent of high-frequency hearing associations with auditory cortex morphology. Together, these results indicate that there are at least two mechanisms for associations between age-related hearing loss and brain morphology. Potential explanations for a direct hearing loss effect on brain morphology, as well as latent variables that likely affect both the inner ear and brain, are discussed.
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Affiliation(s)
- Mark A. Eckert
- Department of Otolaryngology—Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA
| | - Kenneth I. Vaden
- Department of Otolaryngology—Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA
| | - Judy R. Dubno
- Department of Otolaryngology—Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA
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Canis M, Bertlich M. Cochlear Capillary Pericytes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1122:115-123. [PMID: 30937866 DOI: 10.1007/978-3-030-11093-2_7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Capillary pericytes in the cochlea of mammals are-compared to pericytes in other tissues, like the CNS-relatively poorly researched. To begin with, there is still a considerable debate as to whether the very last precapillary arterioles should-due to their contractile properties-may be considered to be pericytes.However, cochlear capillary pericytes have shifted into the center of attention in the past decade. Most mammals show a considerable number of pericytes in the stria vascularis of the cochlea-up to 1300 in a mouse alone. This high number may be explained by the observation that cochlear capillary pericytes may be differentiated into different subgroups, depending on the immune markers that are expressed by them. Corresponding with these subpopulations, cochlear pericytes fulfill three core functions in the physiology of the cochlea: Formation of the intrastrial blood-fluid barrier-Pericytes monitor the ion, fluid, and nutrient household and aid in the homeostasis thereof. Regulation of cochlear blood flow-By contraction on relaxation, pericytes contribute to the regulation of cochlear blood flow, a paramount function parameter of the cochlea. Immune response-Pericytes actually contribute to the immune response in inflammation of the cochlea. Due to these central roles in the physiology of the cochlea, pericytes actually play a major role in numerous cochlear pathologies, including, but not limited to, sudden sensorineural hearing loss, acoustic trauma, and inflammation of the cochlea.
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Affiliation(s)
- Martin Canis
- The Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Munich, Germany
| | - Mattis Bertlich
- The Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Munich, Germany.
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Singh A, Singh SK, Mitra D, Datta R. Unilateral Sudden Sensorineural Hearing Loss: A Rare Presentation of Cerebral Venous Thrombosis. Indian J Otolaryngol Head Neck Surg 2018; 71:1458-1461. [PMID: 31750196 DOI: 10.1007/s12070-018-1550-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 12/04/2018] [Indexed: 11/28/2022] Open
Abstract
Sudden sensorineural hearing loss (SNHL) is postulated to be caused due to a multitude of factors, but a definitive cause is seldom found despite extensive investigations. We present a rare case of sudden SNHL in which central venous thrombosis was found on magnetic resonance imaging. The case highlights the importance of neuroimaging in all cases of sudden SNHL before being labelled as "idiopathic" so that targeted therapy can be given.
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Affiliation(s)
- Anubhav Singh
- 1Department of ORL-HNS, Armed Forces Medical College, Pune, 411040 India
| | - Sanajeet K Singh
- 2Department of ORL-HNS, Army Hospital (R&R), New Delhi, 110010 India
| | - Debjit Mitra
- 3Department of Neurology, Command Hospital, Pune, 411040 India
| | - Rakesh Datta
- 1Department of ORL-HNS, Armed Forces Medical College, Pune, 411040 India
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Immune-Mediated Systemic Vasculitis as the Proposed Cause of Sudden-Onset Sensorineural Hearing Loss following Lassa Virus Exposure in Cynomolgus Macaques. mBio 2018; 9:mBio.01896-18. [PMID: 30377282 PMCID: PMC6212830 DOI: 10.1128/mbio.01896-18] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Lassa virus (LASV) causes a severe, often fatal hemorrhagic disease in regions in Africa where the disease is endemic, and approximately 30% of patients develop sudden-onset sensorineural hearing loss after recovering from acute disease. The causal mechanism of hearing loss in LASV-infected patients remains elusive. Here, we report findings after closely examining the chronic disease experienced by surviving macaques assigned to LASV exposure control groups in two different studies. All nonhuman primates (NHPs) developed typical signs and symptoms of Lassa fever, and seven succumbed during the acute phase of disease. Three NHPs survived beyond the acute phase and became chronically ill but survived to the study endpoint, 45 days postexposure. All three of these survivors displayed continuous disease symptoms, and apparent hearing loss was observed using daily subjective measurements, including response to auditory stimulation and tuning fork tests. Objective measurements of profound unilateral or bilateral sensorineural hearing loss were confirmed for two of the survivors by brainstem auditory evoked response (BAER) analysis. Histologic examination of inner ear structures and other tissues revealed the presence of severe vascular lesions consistent with systemic vasculitides. These systemic immune-mediated vascular disorders have been associated with sudden hearing loss. Other vascular-specific damage was also observed to be present in many of the sampled tissues, and we were able to identify persistent virus in the perivascular tissues in the brain tissue of survivors. Serological analyses of two of the three survivors revealed the presence of autoimmune disease markers. Our findings point toward an immune-mediated etiology for Lassa fever-associated sudden-onset hearing loss and lay the foundation for developing potential therapies to prevent and/or cure Lassa fever-associated sudden-onset hearing loss.IMPORTANCE Lassa virus is one of the most common causes of viral hemorrhagic fever. A frequent, but as yet unexplained, consequence of infection with Lassa virus is acute, sudden-onset sensorineural hearing loss in one or both ears. Deafness is observed in approximately 30% of surviving Lassa fever patients, an attack rate that is approximately 300% higher than mumps virus infection, which was previously thought to be the most common cause of virus-induced deafness. Here, we provide evidence from Lassa virus-infected cynomolgus macaques implicating an immune-mediated vasculitis syndrome underlying the pathology of Lassa fever-associated deafness. These findings could change the way human Lassa fever patients are medically managed in order to prevent deafness by including diagnostic monitoring of human survivors for onset of vasculitides via available imaging methods and/or other diagnostic markers of immune-mediated vascular disease.
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Neri G, Marcelli V, Califano L. Assessment of the effect of mesoglycan in the treatment of audiovestibular disorders of vascular origin. Int J Immunopathol Pharmacol 2018; 32:2058738418773833. [PMID: 29734824 PMCID: PMC5946343 DOI: 10.1177/2058738418773833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
It is a well-known fact that inner ear diseases are often caused by microcirculatory disorders, and the recent literature is oriented towards investigations into the relationship between the cardiovascular system and cochleovestibular illness with related classical symptoms: tinnitus, hearing loss, and vertigo or instability. These symptoms, and particularly the vertigo, may be the alarm signal of microcirculatory disorders of the labyrinth or vertebrobasilar circulation so as to represent a possible symptom of posterior circulation stroke. The treatment aimed at correcting the haemodynamic and metabolic imbalance, generated by the cochleovestibular microcirculatory disorders, with drugs that act on the vessel wall being very useful, both alone and in combination with other treatment protocols. This is a multicenter retrospective observational study conducted in 40 neurootological laboratories with 873 patients with cardiovascular risk factors suffering from tinnitus, instability or peripheral vertigo alone or in combination with one another treated for the first time with mesoglycan. The data collected showed that the treatment with mesoglycan, irrespective of the type of vascular risk factor, is not only well tolerated but also significantly and objectively improves the cochleovestibular symptoms and the quality of life of patients suffering from tinnitus, peripheral vertigo and instability.
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Affiliation(s)
- Giampiero Neri
- 1 Department of Neurosciences, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | | | - Luigi Califano
- 3 UOSD Audiovestibology G. Rummo Hospital, Benevento, Italy
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Erkan SO, Tuhanioğlu B, Gürgen SG, Özdaş T, Taştekin B, Pelit A, Görgülü O. The effect of resveratrol on the histologic characteristics of the cochlea in diabetic rats. Laryngoscope 2018; 129:E1-E6. [PMID: 30284252 DOI: 10.1002/lary.27253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/20/2018] [Accepted: 04/04/2018] [Indexed: 11/08/2022]
Abstract
OBJECTIVES/HYPOTHESIS The aim of this study was to investigate changes in the cochlea and the potential dose-dependent effects of resveratrol (RSV) against diabetes mellitus (DM) ototoxicity. STUDY DESIGN Animal model. METHODS Twenty-four male Wistar albino rats were divided into four groups. Baseline distortion product otoacoustic emission (DPOAE) measurements were evaluated. Group I was the control group, group II was made diabetic with single-dose streptozotocin, and groups III and IV were rendered diabetic as group II and administered 10 and 20 mg RSV, respectively, intraperitoneally for 4 weeks. All animals were sacrificed after repeated DPOAE measurement. Apoptosis was investigated using caspase-3, Bax (Bcl-associated X protein), and TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) staining. RESULTS The DPOAE values in the diabetic group were found to be significantly lower compared with the other groups at 5,714 Hz and 8,000 Hz (P < .05). No significant difference in otoacoustic emission was detected in the comparison of the RSV doses (P > .05). The histopathologic investigation using caspase-3, Bax, and TUNEL staining showed that the mean rank of the diabetic group was significantly higher compared with the RSV10, RSV20, and control groups (DM > RSV10 > RSV20 > control) (P < .05). CONCLUSIONS These results imply that RSV administration offered statistically significant protection for the cochleas of rats against diabetes. This protective effect improved histologically with higher doses. LEVEL OF EVIDENCE NA Laryngoscope, 129:E1-E6, 2019.
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Affiliation(s)
- Sanem O Erkan
- Department of Otorhinolaryngology-Head and Neck Surgery, Health Science University, Adana City Hospital, Yüreğir, Adana, Turkey
| | - Birgül Tuhanioğlu
- Department of Otorhinolaryngology-Head and Neck Surgery, Health Science University, Adana City Hospital, Yüreğir, Adana, Turkey
| | - Seren G Gürgen
- Department of Histology and Embriology, Celal Bayar University, Manisa, Turkey
| | - Talih Özdaş
- Department of Otorhinolaryngology-Head and Neck Surgery, Health Science University, Adana City Hospital, Yüreğir, Adana, Turkey
| | - Bora Taştekin
- Department of Biophysics, Çukurova University, Yüreğir, Adana, Turkey
| | - Aykut Pelit
- Department of Biophysics, Çukurova University, Yüreğir, Adana, Turkey
| | - Orhan Görgülü
- Department of Otorhinolaryngology-Head and Neck Surgery, Health Science University, Adana City Hospital, Yüreğir, Adana, Turkey
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Petrova VA, Panevin AA, Zhuravskii SG, Gasilova ER, Vlasova EN, Romanov DP, Poshina DN, Skorik YA. Preparation of N-succinyl-chitin nanoparticles and their applications in otoneurological pathology. Int J Biol Macromol 2018; 120:1023-1029. [PMID: 30172812 DOI: 10.1016/j.ijbiomac.2018.08.180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/21/2018] [Accepted: 08/29/2018] [Indexed: 12/16/2022]
Abstract
Succinyl-chitin (SCH) nanoparticles were obtained by acylation of partially deacetylated chitin (DCH) nanofibers. Introduction of the succinyl moiety induced a partial amorphization of DCH, as viewed by X-ray diffraction, and increased the fractal dimension of the colloids from df = 1.2 (DCH) to 1.5-1.7 (SCH), as revealed by light scattering. The spherically symmetric form of the colloids remained almost unchanged, as indicated by the range of structure-sensitive ratios 1.0 < Rg/Rh < 1.2; the hydrodynamic diameter ranged from 200 to 300 nm. The cytoprotective activity of the SCH nanoparticles was evaluated in vivo in an acute hearing pathology model (220-250 g male Wistar rats, n = 90) following prophylactic and therapeutic administrations. Ototropic action was estimated using the amplitude of otoacoustic emissions at the frequency of the distortion product otoacoustic emissions in the range of 4-6.4 kHz before acoustic stimulation, as well as at 1 h, 24 h, and 7 days after acoustic stimulation. A dispersion of 0.3% SCH nanoparticles demonstrated prolonged ototropic action and earlier regeneration of hearing functions when compared to a meglumine sodium succinate solution. Thus, intravenous administration of the SCH nanoparticles increases the cycling time of exogenous succinate and improves biodistribution in tissues possessing a hemato-labyrinth barrier.
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Affiliation(s)
- Valentina A Petrova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. VO 31, St. Petersburg 199004, Russian Federation
| | - Aleksey A Panevin
- Pavlov First Saint Petersburg State Medical University, ul. Lva Tolstogo 6/8, St. Petersburg 197022, Russian Federation; Institute of Experimental Medicine, Almazov National Medical Research Centre, ul. Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Sergei G Zhuravskii
- Pavlov First Saint Petersburg State Medical University, ul. Lva Tolstogo 6/8, St. Petersburg 197022, Russian Federation; Institute of Experimental Medicine, Almazov National Medical Research Centre, ul. Akkuratova 2, St. Petersburg 197341, Russian Federation
| | - Ekaterina R Gasilova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. VO 31, St. Petersburg 199004, Russian Federation
| | - Elena N Vlasova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. VO 31, St. Petersburg 199004, Russian Federation
| | - Dmitry P Romanov
- Institute of Silicate Chemistry of the Russian Academy of Sciences, nab. Adm. Makarova 2, St. Petersburg 199034, Russian Federation
| | - Daria N Poshina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. VO 31, St. Petersburg 199004, Russian Federation
| | - Yury A Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. VO 31, St. Petersburg 199004, Russian Federation; Institute of Experimental Medicine, Almazov National Medical Research Centre, ul. Akkuratova 2, St. Petersburg 197341, Russian Federation; Institute of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, St. Petersburg 198504, Russian Federation.
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50
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Shi S, Guo P, Wang W. Magnetic Resonance Imaging of Ménière's Disease After Intravenous Administration of Gadolinium. Ann Otol Rhinol Laryngol 2018; 127:777-782. [PMID: 30156867 DOI: 10.1177/0003489418794699] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES A three-dimensional (3D) inversion-recovery (IR) sequence with real reconstruction (3D-real IR) sequence 4 hours after intravenous (IV) gadolinium injection has been used to visualize the endolymphatic hydrops (ELH) in Ménière's disease (MD). This study was designed to investigate the ELH characteristics in clinically diagnosed definite MD and to explore the pathology of MD with magnetic resonance imaging (MRI). METHODS One hundred fifty-four patients with definite MD were included in this study. All patients underwent the IV method. The grades of ELH were analyzed on each image, regions of interest of the cochlear perilymph and the cerebellum white matter were determined, and the signal intensity ratio of the former to the latter (CC ratio) on both sides in patients with unilateral MD was subsequently evaluated. RESULTS Endolymphatic hydrops was observed in 148 patients (96.1%) on the clinically affected side; the remaining 6 patients (3.9%) had no apparent ELH. One hundred fifteen patients (74.7%) had unilateral ELH, and 33 patients (21.4%) had bilateral ELH. Eighteen patients (11.7%) had ELH on the clinically silent side. Patients with moderate and significant grades of ELH in the vestibule and cochlea accounted for 88.3% and 90.3%, respectively. The CC ratio of the affected side (1.39 ± 0.37) was higher than that of the unaffected side (1.18 ± 0.29) ( P < .01) in 115 patients with unilateral MD. CONCLUSIONS Moderate and significant grades of ELH are common in MD; however, the proposed diagnostic criteria are not fully consistent with ELH. The elevated contrast effect in the affected side in patients with unilateral MD may better reflect the pathologic condition of MD.
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Affiliation(s)
- Suming Shi
- 1 Department of Otolaryngology-Head and Neck Surgery, Fudan University, Shanghai, China.,2 NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Ping Guo
- 1 Department of Otolaryngology-Head and Neck Surgery, Fudan University, Shanghai, China.,2 NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
| | - Wuqing Wang
- 1 Department of Otolaryngology-Head and Neck Surgery, Fudan University, Shanghai, China.,2 NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, China
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