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Requena T, Keder A, zur Lage P, Albert JT, Jarman AP. A Drosophila model for Meniere's disease: Dystrobrevin is required for support cell function in hearing and proprioception. Front Cell Dev Biol 2022; 10:1015651. [PMID: 36438562 PMCID: PMC9688402 DOI: 10.3389/fcell.2022.1015651] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/27/2022] [Indexed: 08/04/2023] Open
Abstract
Meniere's disease (MD) is an inner ear disorder characterised by recurrent vertigo attacks associated with sensorineural hearing loss and tinnitus. Evidence from epidemiology and Whole Exome Sequencing (WES) suggests a genetic susceptibility involving multiple genes, including α-Dystrobrevin (DTNA). Here we investigate a Drosophila model. We show that mutation, or knockdown, of the DTNA orthologue in Drosophila, Dystrobrevin (Dyb), results in defective proprioception and impaired function of Johnston's Organ (JO), the fly's equivalent of the inner ear. Dyb and another component of the dystrophin-glycoprotein complex (DGC), Dystrophin (Dys), are expressed in support cells within JO. Their specific locations suggest that they form part of support cell contacts, thereby helping to maintain the integrity of the hemolymph-neuron diffusion barrier, which is equivalent to a blood-brain barrier. These results have important implications for the human condition, and notably, we note that DTNA is expressed in equivalent cells of the mammalian inner ear.
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Affiliation(s)
- T. Requena
- Biomedical Sciences: Centre for Discovery Brain Sciences, Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
- Division of Functional Genetics and Development, The Royal Dick School of Veterinary Sciences, The Roslin Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - A. Keder
- Ear Institute, University College London, London, United Kingdom
| | - P. zur Lage
- Biomedical Sciences: Centre for Discovery Brain Sciences, Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - J. T. Albert
- Ear Institute, University College London, London, United Kingdom
| | - A. P. Jarman
- Biomedical Sciences: Centre for Discovery Brain Sciences, Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
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Choi HG, Lee CH, Yoo DM, Min C, Park B, Kim SY. Effects of short- and long-term exposure to air pollution and meteorological factors on Meniere's disease. Sci Rep 2021; 11:16063. [PMID: 34373509 PMCID: PMC8352931 DOI: 10.1038/s41598-021-95491-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/23/2021] [Indexed: 11/30/2022] Open
Abstract
The association between air pollutants and Meniere’s disease has not been explored. The present study investigated the relationship between meteorological factors and air pollutants on Meniere’s disease. Participants, aged ≥ 40 years, of the Korean National Health Insurance Service-Health Screening Cohort were included in this study. The 7725 patients with Meniere’s disease were matched with 30,900 control participants. The moving average meteorological and air pollution data of the previous 7 days, 1 month, 3 months, and 6 months before the onset of Meniere’s disease were compared between the Meniere’s disease and control groups using conditional logistic regression analyses. Additional analyses were conducted according to age, sex, income, and residential area. Temperature range; ambient atmospheric pressure; sunshine duration; and levels of SO2, NO2, O3, CO, and PM10 for 1 month and 6 months were associated with Meniere’s disease. Adjusted ORs (odds ratios with 95% confidence interval [CI]) for 1 and 6 months of O3 concentration were 1.29 (95% CI 1.23–1.35) and 1.31 (95% CI 1.22–1.42), respectively; that for the 1 and 6 months of CO concentration were 3.34 (95% CI 2.39–4.68) and 4.19 (95% CI 2.79–6.30), respectively. Subgroup analyses indicated a steady relationship of O3 and CO concentrations with Meniere’s disease. Meteorological factors and air pollutants were associated with the rate of Meniere’s disease. In particular, CO and O3 concentrations were positively related to the occurrence of Meniere’s disease.
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Affiliation(s)
- Hyo Geun Choi
- Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, Korea.,Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University College of Medicine, Anyang, Korea.,Hallym Institute for Environmental Diseases (HIED), Chuncheon, Korea
| | - Chang Ho Lee
- Department of Otorhinolaryngology-Head & Neck Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Dae Myoung Yoo
- Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, Korea
| | - Chanyang Min
- Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, Korea.,Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Bumjung Park
- Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University College of Medicine, Anyang, Korea
| | - So Young Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
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Dean NJ, Pastras C, Brown D, Camp A. Are viral-infections associated with Ménière's Disease? A systematic review and meta-analysis of molecular-markers of viral-infection in case-controlled observational studies of MD. PLoS One 2019; 14:e0225650. [PMID: 31756230 PMCID: PMC6874328 DOI: 10.1371/journal.pone.0225650] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/09/2019] [Indexed: 12/18/2022] Open
Abstract
Despite considerable research, it remains controversial as to whether viral-infections are associated with Meniere’s Disease (MD), a clinically heterogeneous set of chronic inner-ear disorders strongly associated with endolymphatic hydrops. Here, we investigated whether viral-infections are associated with MD through a systematic review and meta-analysis of observational clinical studies using molecular-diagnostics. Eligible for inclusion were case-controlled studies which ascertained molecular-determinants of past or present viral-infection through either viral nucleic acids or host serological marker in MD cases and non-MD controls. Across online databases and grey literature, we identified 210 potentially relevant articles in the English language, from which a total of 14 articles fully satisfied our eligibility criteria such that meta-groups of 611 MD-cases and 373 controls resulted. The aggregate quality of the modest-sized (14 studies) body of evidence was limited and varied considerably with regards to participant selection, matching, and ascertainment(s) and determinant(s) of viral-infection. Most data identified concerned the human cytomegalovirus (CMV), and meta-analysis of eligible studies revealed that evidence of CMV-infection was associated approximately three-fold with MD compared to controls, however the timing of the infections was indeterminate as the pooled analyses combined antiviral serological markers with viral nucleic acid markers. No association was found for any of HSV-1, -2, VZV, or EBV. Associative analyses of any viral species not aforementioned were precluded by limited data, and thus potential associations between other viral species and MD, especially other than Herpesviridae, are yet to be characterised. Overall, we have found a small association between CMV-infection and MD, however it is to be determined for what sub-groups of MD this finding may be relevant, and ideally the reported association remains would be reproduced by a greater volume of higher quality evidence.
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Affiliation(s)
| | - Christopher Pastras
- School of Medical Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Daniel Brown
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, WA, Australia
| | - Aaron Camp
- School of Medical Sciences, The University of Sydney, Sydney, NSW, Australia
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Ménière's Disease: Molecular Analysis of Aquaporins 2, 3 and Potassium Channel KCNE1 Genes in Brazilian Patients. Otol Neurotol 2017; 37:1117-21. [PMID: 27509294 DOI: 10.1097/mao.0000000000001136] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Ménière's disease (MD) is a complex disease of unknown etiology characterized by a symptomatic tetrad of vertigo, hearing loss, tinnitus, and aural fullness. In addition to factors related to homeostasis of the inner ear, genetic factors have been implicated in its pathophysiology, including genes related to the transport of water and ionic composition maintenance of the endolymph, such as the aquaporin genes AQP2 and AQP3, and the potassium channel gene KCNE1. The aim of this study was to identify polymorphisms of these genes and determine their association with clinical characteristics of patients with MD. DESIGN A case-control genetic association study was carried out, including 30 patients with definite Ménière's disease and 30 healthy controls. The coding regions of the target genes were amplified from blood samples by polymerase chain reaction (PCR), followed by direct sequencing. The associations of polymorphisms with clinical characteristics were analyzed with logistic regression. RESULTS Five polymorphisms were identified: rs426496 in AQP2; rs591810 in AQP3; and rs1805127, rs1805128, and rs17173510 in KCNE1. After adjustment, rs426496 was significantly associated with tinnitus during the initial crisis and with altered electronystagmography, and rs1805127 was significantly associated with nephropathy. CONCLUSIONS The genetic variant rs426496 in AQP2; rs591810 in AQP3 and rs1805127, rs1805128, and rs17173510, in KCNE1 were found in patients with Ménière's disease. The polymorphism rs426496, in AQP2, is associated with tinnitus at the onset of Ménière's disease and altered electronystagmography. In addition, rs1805127, in KCNE1, is associated with the presence of nephropathy.
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Chiarella G, Petrolo C, Cassandro E. The genetics of Ménière's disease. APPLICATION OF CLINICAL GENETICS 2015; 8:9-17. [PMID: 25609993 PMCID: PMC4293923 DOI: 10.2147/tacg.s59024] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Our understanding of the genetic basis of Ménière’s disease (MD) is still limited. Although the familial clustering and the geographical and racial differences in incidence strongly suggest a certain role for genetic factors in the development of MD, no convincing evidence for an association with any gene exists, at present. In this review, starting from rational bases for a genetic approach to MD, we explored the numerous reports published in literature and summarize the recent advances in understanding of the genetic fundaments of the disease.
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Affiliation(s)
- Giuseppe Chiarella
- Department of experimental and Clinical Medicine, Audiology and Phoniatrics Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - C Petrolo
- Department of experimental and Clinical Medicine, Audiology and Phoniatrics Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - E Cassandro
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
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Requena T, Cabrera S, Martín-Sierra C, Price SD, Lysakowski A, Lopez-Escamez JA. Identification of two novel mutations in FAM136A and DTNA genes in autosomal-dominant familial Meniere's disease. Hum Mol Genet 2014; 24:1119-26. [PMID: 25305078 DOI: 10.1093/hmg/ddu524] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Meniere's disease (MD) is a chronic disorder of the inner ear defined by sensorineural hearing loss, tinnitus and episodic vertigo, and familial MD is observed in 5-15% of sporadic cases. Although its pathophysiology is largely unknown, studies in human temporal bones have found an accumulation of endolymph in the scala media of the cochlea. By whole-exome sequencing, we have identified two novel heterozygous single-nucleotide variants in FAM136A and DTNA genes, both in a Spanish family with three affected cases in consecutive generations, highly suggestive of autosomal-dominant inheritance. The nonsense mutation in the FAM136A gene leads to a stop codon that disrupts the FAM136A protein product. Sequencing revealed two mRNA transcripts of FAM136A in lymphoblasts from patients, which were confirmed by immunoblotting. Carriers of the FAM136A mutation showed a significant decrease in the expression level of both transcripts in lymphoblastoid cell lines. The missense mutation in the DTNA gene produces a novel splice site which skips exon 21 and leads to a shorter alternative transcript. We also demonstrated that FAM136A and DTNA proteins are expressed in the neurosensorial epithelium of the crista ampullaris of the rat by immunohistochemistry. While FAM136A encodes a mitochondrial protein with unknown function, DTNA encodes a cytoskeleton-interacting membrane protein involved in the formation and stability of synapses with a crucial role in the permeability of the blood-brain barrier. Neither of these genes has been described in patients with hearing loss, FAM136A and DTNA being candidate gene for familiar MD.
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Affiliation(s)
- Teresa Requena
- Otology & Neurotology Group CTS495, Department of Genomic Medicine, GENYO - Centre for Genomics and Oncological Research - Pfizer/University of Granada/Junta de Andalucía, PTS, Granada 18016, Spain
| | - Sonia Cabrera
- Otology & Neurotology Group CTS495, Department of Genomic Medicine, GENYO - Centre for Genomics and Oncological Research - Pfizer/University of Granada/Junta de Andalucía, PTS, Granada 18016, Spain
| | - Carmen Martín-Sierra
- Otology & Neurotology Group CTS495, Department of Genomic Medicine, GENYO - Centre for Genomics and Oncological Research - Pfizer/University of Granada/Junta de Andalucía, PTS, Granada 18016, Spain
| | - Steven D Price
- Department of Anatomy and Cell Biology, University of Illinois, Chicago, IL 60612, USA and
| | - Anna Lysakowski
- Department of Anatomy and Cell Biology, University of Illinois, Chicago, IL 60612, USA and
| | - José A Lopez-Escamez
- Otology & Neurotology Group CTS495, Department of Genomic Medicine, GENYO - Centre for Genomics and Oncological Research - Pfizer/University of Granada/Junta de Andalucía, PTS, Granada 18016, Spain, Department of Otolaryngology, Hospital de Poniente, El Ejido, Almería 04700, Spain
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Requena T, Espinosa‐Sanchez J, Cabrera S, Trinidad G, Soto‐Varela A, Santos‐Perez S, Teggi R, Perez P, Batuecas‐Caletrio A, Fraile J, Aran I, Martin E, Benitez J, Pérez‐Fernández N, Lopez‐Escamez J. Familial clustering and genetic heterogeneity in Meniere's disease. Clin Genet 2013; 85:245-52. [DOI: 10.1111/cge.12150] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/19/2013] [Accepted: 03/19/2013] [Indexed: 01/31/2023]
Affiliation(s)
- T. Requena
- Otology & Neurotology Group CTS495, Human DNA Variability Department ‐ Centro de Genómica e Investigación OncológicaPfizer/Universidad de Granada/ Junta de Andalucía (GENYO) Granada Spain
| | - J.M. Espinosa‐Sanchez
- Otology & Neurotology Group CTS495, Human DNA Variability Department ‐ Centro de Genómica e Investigación OncológicaPfizer/Universidad de Granada/ Junta de Andalucía (GENYO) Granada Spain
- Department of OtorhinolaryngologyHospital San Agustin Linares Spain
| | - S. Cabrera
- Otology & Neurotology Group CTS495, Human DNA Variability Department ‐ Centro de Genómica e Investigación OncológicaPfizer/Universidad de Granada/ Junta de Andalucía (GENYO) Granada Spain
| | - G. Trinidad
- Division of Otoneurology, Department of OtorhinolaryngologyComplejo Hospitalario Badajoz Badajoz Spain
| | - A. Soto‐Varela
- Division of Otoneurology, Department of OtorhinolaryngologyComplexo Hospitalario Universitario Santiago de Compostela Spain
| | - S. Santos‐Perez
- Division of Otoneurology, Department of OtorhinolaryngologyComplexo Hospitalario Universitario Santiago de Compostela Spain
| | - R. Teggi
- Department of OtolaryngologySan Raffaelle Scientific Institute Milan Italy
| | - P. Perez
- Department of OtorhinolaryngologyHospital Cabueñes Gijón Spain
| | | | - J. Fraile
- Department of OtolaryngologyHospital Miguel Servet Zaragoza Spain
| | - I. Aran
- Department of OtolaryngologyComplexo Hospitalario de Pontevedra Pontevedra Spain
| | - E. Martin
- Department of OtolaryngologyHospital Universitario de Getafe Madrid Spain
| | - J. Benitez
- Department of OtolaryngologyHospital Universitario de Gran Canaria Dr Negrin Las Palmas Spain
| | - N. Pérez‐Fernández
- Department of OtolaryngologyClinica Universidad de Navarra Pamplona Spain
| | - J.A. Lopez‐Escamez
- Otology & Neurotology Group CTS495, Human DNA Variability Department ‐ Centro de Genómica e Investigación OncológicaPfizer/Universidad de Granada/ Junta de Andalucía (GENYO) Granada Spain
- Department of OtolaryngologyHospital de Poniente Almería Spain
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