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Kortas A, Pomianowski A, Kolecka M, Rytel L. Sensorineural deafness in purebred white Devon Rex cats. J Vet Intern Med 2024; 38:1120-1126. [PMID: 38332646 PMCID: PMC10937476 DOI: 10.1111/jvim.17007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 01/24/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Data regarding congenital sensorineural deafness (CSD) in client-owned, white Devon Rex cats is limited because most of the information on this disease comes from experiments on mixed-breed cats. OBJECTIVES Provide data on the occurrence of CSD in a population of client-owned purebred white Devon Rex cats. ANIMALS Forty client-owned, purebred, white Devon Rex cats examined at 2 different facilities. Median age of the examined cats was 19 weeks. METHODS Hearing status was defined by use of brainstem auditory evoked responses. RESULTS The occurrence of sensorineural deafness in the studied population of Devon Rex cats was estimated at 10%. Unilateral and bilateral deafness occurred equally often, with 2 individuals having each (ie, 5.0%). No association between the occurrence of CSD and sex could be found, χ2 (1, n = 40) = 0.001 (P > .99). No association between blue irises and deafness was noted in the studied population, χ2 (1, n = 40) < 0.01 (P > .99). CONCLUSIONS The occurrence of CSD in a population of client-owned, white Devon Rex cats was found to be lower compared with data obtained in previously conducted studies of deafness in purebred cats. In the studied population of Devon Rex cats, no association between blue irises and CSD was found.
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Affiliation(s)
- Annemarie Kortas
- Department of Internal Diseases with Clinic, Faculty of Veterinary MedicineUniversity of Warmia and MazuryOlsztynPoland
| | - Andrzej Pomianowski
- Department of Internal Diseases with Clinic, Faculty of Veterinary MedicineUniversity of Warmia and MazuryOlsztynPoland
| | - Malgorzata Kolecka
- Neurology and Neurosurgery DepartmentSmall Animal Clinic KalbachFrankfurtGermany
| | - Liliana Rytel
- Department of Internal Diseases with Clinic, Faculty of Veterinary MedicineUniversity of Warmia and MazuryOlsztynPoland
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Boppana SB, van Boven M, Britt WJ, Gantt S, Griffiths PD, Grosse SD, Hyde TB, Lanzieri TM, Mussi-Pinhata MM, Pallas SE, Pinninti SG, Rawlinson WD, Ross SA, Vossen ACTM, Fowler KB. Vaccine value profile for cytomegalovirus. Vaccine 2023; 41 Suppl 2:S53-S75. [PMID: 37806805 DOI: 10.1016/j.vaccine.2023.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/28/2023] [Accepted: 06/02/2023] [Indexed: 10/10/2023]
Abstract
Cytomegalovirus (CMV) is the most common infectious cause of congenital malformation and a leading cause of developmental disabilities such as sensorineural hearing loss (SNHL), motor and cognitive deficits. The significant disease burden from congenital CMV infection (cCMV) led the US National Institute of Medicine to rank CMV vaccine development as the highest priority. An average of 6.7/1000 live births are affected by cCMV, but the prevalence varies across and within countries. In contrast to other congenital infections such as rubella and toxoplasmosis, the prevalence of cCMV increases with CMV seroprevalence rates in the population. The true global burden of cCMV disease is likely underestimated because most infected infants (85-90 %) have asymptomatic infection and are not identified. However, about 7-11 % of those with asymptomatic infection will develop SNHL throughout early childhood. Although no licensed CMV vaccine exists, several candidate vaccines are in development, including one currently in phase 3 trials. Licensure of one or more vaccine candidates is feasible within the next five years. Various models of CMV vaccine strategies employing different target populations have shown to provide substantial benefit in reducing cCMV. Although CMV can cause end-organ disease with significant morbidity and mortality in immunocompromised individuals, the focus of this vaccine value profile (VVP) is on preventing or reducing the cCMV disease burden. This CMV VVP provides a high-level, comprehensive assessment of the currently available data to inform the potential public health, economic, and societal value of CMV vaccines. The CMV VVP was developed by a working group of subject matter experts from academia, public health groups, policy organizations, and non-profit organizations. All contributors have extensive expertise on various elements of the CMV VVP and have described the state of knowledge and identified the current gaps. The VVP was developed using only existing and publicly available information.
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Affiliation(s)
- Suresh B Boppana
- Departments of Pediatrics and Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Michiel van Boven
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, and Julius Center for Health Sciences and Primary Care, Department of Epidemiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - William J Britt
- Departments of Pediatrics, Microbiology, and Neurobiology, Heersink School of Medicine, University of Alabama at Birmingham, USA
| | - Soren Gantt
- Centre de recherche du CHU Sainte-Justine, Montréal, QC H3T 1C5, Canada
| | - Paul D Griffiths
- Emeritus Professor of Virology, University College London, United Kingdom
| | - Scott D Grosse
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Terri B Hyde
- Global Immunization Division, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Tatiana M Lanzieri
- Measles, Rubella, and Cytomegalovirus Epidemiology Team, Viral Vaccine Preventable Diseases Branch / Division of Viral Diseases. National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Marisa M Mussi-Pinhata
- Department of Pediatrics, Ribeirão Preto Medical School, University of São Paulo, Brazil
| | - Sarah E Pallas
- Global Immunization Division, Center for Global Health, U.S. Centers for Disease Control and Prevention, Atlanta, GA 30329-4027, USA
| | - Swetha G Pinninti
- Departments of Pediatrics and Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - William D Rawlinson
- Serology and Virology Division, NSW Health Pathology Randwick, Prince of Wales Hospital, Sydney, Australia; School of Biotechnology and Biomolecular Sciences, and School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Shannon A Ross
- Departments of Pediatrics and Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Ann C T M Vossen
- Department of Medical Microbiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Karen B Fowler
- Departments of Pediatrics and Epidemiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
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Ketterer MC, Birkenhäger R, Beck R, Arndt S, Aschendorff A, Kunze M. Postnatal genetic umbilical cord analysis for earliest possible detection of inherited hearing impairment. Eur Arch Otorhinolaryngol 2023; 280:4811-4817. [PMID: 37093292 PMCID: PMC10562316 DOI: 10.1007/s00405-023-07986-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/17/2023] [Indexed: 04/25/2023]
Abstract
INTRODUCTION The most common sensorineural disorder in humans is hearing impairment and approximately 60% of prelingual hearing disorders are genetic. Especially parents with a congenital deaf child want to know as early as possible whether their second born child has the same genetic defect or not. The aim of this study is to demonstrate that postnatal genetic umbilical cord analysis is both the earliest detection possibility and sufficient. METHODS We included first born children with severe hearing impairment that underwent cochlear implantation. All included patients were analyzed genetically and exhibited mutations of either DFNB1 loci or SLC26A4 gene. Additionally, the umbilical cord of the sibling underwent genetic analysis to detect hereditary genetic mutations as early as possible. RESULTS 49 newborn children out of 22 families were included in this study. Genetic analysis revealed clinical relevant mutations in all first born children and in four siblings via umbilical cord analysis. All patients who have been diagnosed with a relevant genetic mutation that caused severe hearing impairment underwent hearing rehabilitation via cochlear implant surgery. CONCLUSION This study demonstrates the sufficient and early as possible detection of known genetically hearing disorders via umbilical cord analysis. In case of a known familial genetic hearing disorder, it is advisable to analyze newborn siblings for the corresponding genetic defect as soon as possible, to be able to plan and initiate clinical care for the patient as early as possible. It is also extremely important for the parents to obtain clear information about the auditory status of the newborn.
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Affiliation(s)
- Manuel Christoph Ketterer
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.
| | - Ralf Birkenhäger
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
- Molecular Biological Laboratory, Section for Clinical and Experimental Otology, University Medical Center Freiburg, Freiburg, Germany
| | - Rainer Beck
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Susan Arndt
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Antje Aschendorff
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Mirjam Kunze
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany
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Sorge I, Hirsch FW, Fuchs M, Gräfe D, Dietz A, Sorge M. Imaging in children with hearing loss. ROFO-FORTSCHR RONTG 2023; 195:896-904. [PMID: 37348530 DOI: 10.1055/a-2081-4119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
BACKGROUND Since the introduction of hearing screening in Germany in 2009, pediatric hearing disorders are detected at an early stage. Early therapy is essential for language development. Imaging plays a central role in diagnosis and therapy planning. METHOD Imaging findings of the most relevant causes of pediatric hearing disorders are presented. Specific attention is given to the method used in each case - CT or MRI. RESULTS AND CONCLUSIONS While CT is the method of choice for conductive hearing loss, a combination of CT and MRI with high-resolution T2-3D sequences has been established as the best diagnostic method for sensorineural hearing loss. The most common causes of conductive hearing loss in childhood are chronic inflammation and cholesteatoma. Congenital malformations of the outer or middle ear are less frequent. In the case of sensorineural hearing loss, the cause is located in the inner ear and/or the cochlear nerve or the cerebrum. In these cases, congenital malformations are the most common cause. KEY POINTS · CT and MRI are necessary to identify morphological causes of hearing disorders and to clarify the possibility of hearing-improving ear surgery or cochlear implantation.. · Contraindications for surgical procedures must be excluded.. · Anatomical variants that may be risk factors for surgery must be described.. CITATION FORMAT · Sorge I, Hirsch F, Fuchs M et al. Imaging diagnostics for childhood hearing loss. Fortschr Röntgenstr 2023; 195: 896 - 904.
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Affiliation(s)
- Ina Sorge
- Department of Pediatric Radiology, University Hospital Leipzig, Germany
| | | | - Michael Fuchs
- Department of Phoniatrics and Audiology, University Hospital Leipzig, Germany
| | - Daniel Gräfe
- Department of Pediatric Radiology, University Hospital Leipzig, Germany
| | - Andreas Dietz
- Department of Otolaryngology, University Hospital Leipzig, Germany
| | - Martin Sorge
- Department of Otolaryngology, University Hospital Leipzig, Germany
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Pinninti S, Boppana S. Congenital cytomegalovirus infection diagnostics and management. Curr Opin Infect Dis 2022; 35:436-441. [PMID: 35984001 PMCID: PMC10494910 DOI: 10.1097/qco.0000000000000874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE OF THE REVIEW Congenital cytomegalovirus infection (cCMV) is the most frequent congenital infection and a leading nongenetic cause of sensorineural hearing loss (SNHL) and brain disease. The purpose of this review is to highlight recent developments in the diagnosis and management of children with cCMV. RECENT FINDINGS Progress is being made in the efforts to identify more infants with cCMV, especially those with asymptomatic infection. Largely due to efforts by various advocacy/parent groups, a number of states in the United States and many hospital systems have implemented hearing targeted CMV screening and mandated education of pregnant women about CMV. SUMMARY cCMV is an important cause of SNHL and neurologic morbidity worldwide. Early identification of infected children is critical to improve outcomes by providing timely interventions and guidance for long-term follow up. The fact that most infants with cCMV have no abnormal clinical findings, and the need to obtain samples for diagnosis within the first 2-3 weeks of life, makes it challenging to identify a majority of infants with cCMV without universal newborn CMV screening.
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Affiliation(s)
- Swetha Pinninti
- Assistant Professor of Pediatrics, Pediatric Infectious Diseases, Heersink School of Medicine I University of Alabama at Birmingham
| | - Suresh Boppana
- Hugh Dillon MD Endowed Professor in Pediatric Infectious Diseases, Professor of Pediatrics and Microbiology, Heersink School of Medicine I University of Alabama at Birmingham, Birmingham, Alabama, USA
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Matsuura K, Yoshimura H, Shinagawa J, Kurozumi M, Takumi Y. Audiological Features in 63 Patients With Cochlear Nerve Deficiency. Otol Neurotol 2022; 43:23-28. [PMID: 34538855 DOI: 10.1097/mao.0000000000003365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE We aimed to investigate the clinical features of cochlear nerve deficiency (CND), and in particular, the long-term course of hearing disability and audiogram shapes. STUDY DESIGN Retrospective observational nonrandomized group study. SETTING Academic medical center. PATIENTS/INTERVENTIONS The subjects were 63 children with congenital hearing loss who visited our hospital between 2009 and 2019 and underwent MRI, based on which they were diagnosed with CND. There were 61 cases of unilateral CND and two cases of bilateral CND. MAIN OUTCOME MEASURES Imaging tests by MRI and CT and audiometric assessments by pure-tone audiometry and distortion product otoacoustic emission were performed. RESULTS Among the cases of CND diagnosed by assessing the cochlear nerve on MRI, approximately 20% of the bony cochlear nerve canals that could be assessed on CT were normal. Of the 61 cases diagnosed with unilateral CND, 55 cases had cochlear nerve aplasia (90.2%), and six had cochlear nerve hypoplasia (9.8%), with a mean hearing ability of 92.2 and 94.6 dB HL, respectively. Thus, the majority of cases had severe-to-profound hearing loss. The overall audiometric patterns were 78.7% flat, 9.8% cookie-bite, and 9.8% high-frequency. Six of 61 cases (9.8%) had a distortion product otoacoustic emission (DPOAE) response based on the affected side, and none of the cases lost the response during follow-up. CONCLUSIONS Herein, we report the largest study on CND and performed CND image and audiometric assessments. Accurately in diagnosing CND requires not only CT but also MRI assessment. Hearing loss is often severe to profound; however, various audiometric patterns have been observed. CND includes a small number of cases that respond to DPOAE, indicating that some CND cases are clinically diagnosed with auditory neuropathy spectrum disorder (ANSD). A sustained DPOAE response might help in differentiating CND from other ANSDs. Children with congenital deafness who have passed the newborn hearing screening by DPOAE should be examined by MRI to rule out CND.
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Affiliation(s)
| | | | | | - Masahiro Kurozumi
- Department of Radiology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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Almazroua AM, Alsughayer L, Ababtain R, Al-shawi Y, Hagr AA. The association between consanguineous marriage and offspring with congenital hearing loss. Ann Saudi Med 2020; 40:456-461. [PMID: 33307738 PMCID: PMC7733643 DOI: 10.5144/0256-4947.2020.456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/03/2020] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Consanguinity is a commonly recognized practice among marriages in the Middle East and may lead to an increase in the prevalence of inherited disorders. Autosomal recessive deafness is the most common form of inherited congenital hearing loss (CHL). OBJECTIVES Determine the association of consanguineous marriages with congenital sensorineural hearing loss (SNHL) and auditory neuropathy. DESIGN Descriptive and analytical cross-sectional study. SETTING Ear specialist hospital. PATIENTS AND METHODS Children with severe-to-profound congenital SNHL, who had been referred to the specialist hospital for cochlear implant were analyzed. Patients were divided into subgroups based on degree of consanguinity. MAIN OUTCOME MEASURE The relative risk of having more than one child with SNHL in offspring of a consanguineous marriage. SAMPLE SIZE 189 parents and children with CHL. RESULTS The parents of 157 children (83.1%) were blood-related. Of those, 48 had more than one child with CHL (31.4%), while only two parents who were not blood-related had more than one child with CHL (6.25%; P=.005). Among the 189 children, 131 (69.3%) parents were direct cousins. Only 39 (20.6%) and 43 (22.8%) children had family histories of CHL on the paternal and maternal sides, respectively. There was no statistically significant difference in the prevalence of auditory neuropathy between the offspring of consanguineous and non-consanguineous marriages (P=.648). CONCLUSION The risk of having more than one child with SNHL in the offspring from a consanguineous marriage is 3.5 times higher than that of a non-consanguineous mating. LIMITATION The association of hearing loss degree with consanguinity was not studied. CONFLICT OF INTEREST None.
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Affiliation(s)
| | - Luluh Alsughayer
- From the College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Rayanh Ababtain
- From the College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Yazeed Al-shawi
- From the Department of Otolaryngology, King Abdullah Ear Specialist Center, King Saud University, Riyadh, Saudi Arabia
- From the Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Abdulrahman A. Hagr
- From the Department of Otolaryngology, King Abdullah Ear Specialist Center, King Saud University, Riyadh, Saudi Arabia
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Gao X, Huang SS, Qiu SW, Su Y, Wang WQ, Xu HY, Xu JC, Kang DY, Dai P, Yuan YY. Congenital sensorineural hearing loss as the initial presentation of PTPN11-associated Noonan syndrome with multiple lentigines or Noonan syndrome: clinical features and underlying mechanisms. J Med Genet 2020; 58:465-474. [PMID: 32737134 DOI: 10.1136/jmedgenet-2020-106892] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/22/2020] [Accepted: 06/02/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Germline variants in PTPN11 are the primary cause of Noonan syndrome with multiple lentigines (NSML) and Noonan syndrome (NS), which share common skin and facial symptoms, cardiac anomalies and retardation of growth. Hearing loss is considered an infrequent feature in patients with NSML/NS. However, in our cohort, we identified a group of patients with PTPN11 pathogenic variants that were primarily manifested in congenital sensorineural hearing loss (SNHL). This study evaluated the incidence of PTPN11-related NSML or NS in patients with congenital SNHL and explored the expression of PTPN11 and the underlying mechanisms in the auditory system. METHODS A total of 1502 patients with congenital SNHL were enrolled. Detailed phenotype-genotype correlations were analysed in patients with PTPN11 variants. Immunolabelling of Ptpn11 was performed in P35 mice. Zebrafish with Ptpn11 knockdown/mutant overexpression were constructed to further explore mechanism underlying the phenotypes. RESULTS Ten NSML/NS probands were diagnosed via the identification of pathogenic variants of PTPN11, which accounted for ~0.67% of the congenital SNHL cases. In mice cochlea, Shp2, which is encoded by Ptpn11, is distributed in the spiral ganglion neurons, hair cells and supporting cells of the inner ear. In zebrafish, knockdown of ptpn11a and overexpression of mutant PTPN11 were associated with a significant decrease in hair cells and supporting cells. We concluded that congenital SNHL could be a major symptom in PTPN11-associated NSML or NS. Other features may be mild, especially in children. CONCLUSION Screening for PTPN11 in patients with congenital hearing loss and variant-based diagnoses are recommended.
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Affiliation(s)
- Xue Gao
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
- Department of Otolaryngology, PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Sha-Sha Huang
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Shi-Wei Qiu
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Yu Su
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Wei-Qian Wang
- Department of Otolaryngology, PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Hui-Yan Xu
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Jin-Cao Xu
- Department of Otolaryngology, PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Dong-Yang Kang
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Pu Dai
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Yong-Yi Yuan
- College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital; National Clinical Research Center for Otolaryngologic Diseases; State Key Lab of Hearing Science, Ministry of Education; Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
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Mutai H, Wasano K, Momozawa Y, Kamatani Y, Miya F, Masuda S, Morimoto N, Nara K, Takahashi S, Tsunoda T, Homma K, Kubo M, Matsunaga T. Variants encoding a restricted carboxy-terminal domain of SLC12A2 cause hereditary hearing loss in humans. PLoS Genet 2020; 16:e1008643. [PMID: 32294086 PMCID: PMC7159186 DOI: 10.1371/journal.pgen.1008643] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 01/31/2020] [Indexed: 02/07/2023] Open
Abstract
Hereditary hearing loss is challenging to diagnose because of the heterogeneity of the causative genes. Further, some genes involved in hereditary hearing loss have yet to be identified. Using whole-exome analysis of three families with congenital, severe-to-profound hearing loss, we identified a missense variant of SLC12A2 in five affected members of one family showing a dominant inheritance mode, along with de novo splice-site and missense variants of SLC12A2 in two sporadic cases, as promising candidates associated with hearing loss. Furthermore, we detected another de novo missense variant of SLC12A2 in a sporadic case. SLC12A2 encodes Na+, K+, 2Cl− cotransporter (NKCC) 1 and plays critical roles in the homeostasis of K+-enriched endolymph. Slc12a2-deficient mice have congenital, profound deafness; however, no human variant of SLC12A2 has been reported as associated with hearing loss. All identified SLC12A2 variants mapped to exon 21 or its 3’-splice site. In vitro analysis indicated that the splice-site variant generates an exon 21-skipped SLC12A2 mRNA transcript expressed at much lower levels than the exon 21-included transcript in the cochlea, suggesting a tissue-specific role for the exon 21-encoded region in the carboy-terminal domain. In vitro functional analysis demonstrated that Cl− influx was significantly decreased in all SLC12A2 variants studied. Immunohistochemistry revealed that SLC12A2 is located on the plasma membrane of several types of cells in the cochlea, including the strial marginal cells, which are critical for endolymph homeostasis. Overall, this study suggests that variants affecting exon 21 of the SLC12A2 transcript are responsible for hereditary hearing loss in humans. Sounds are perceived by auditory sensory cells, owing to tissues surrounding them, including the cochlear lateral wall. Part of the cochlear lateral wall, the stria vascularis, is critical for production and maintenance of inner-ear fluid with a high potassium concentration, and for generating the positive voltage in the inner ear, important for sound perception, by stimulating secretion of potassium from marginal cells. The gene SLC12A2 encodes a protein involved in sodium, potassium, and chloride transport essential for proper function of specific cells in the stria vascularis; however, human variants of SLC12A2 have not previously been associated with hearing loss. By comprehensive genetic analysis of protein-coding sequences, we identified four candidate changes in SLC12A2 in four families with congenital, severe-to-profound hearing loss. Intriguingly, all four genetic variants were either within or at the 3’-splice site of the exon 21 which encodes a part of the carboxy terminal intracellular domain of SLC12A2. Experiments in cultured cells showed that skipping or mutation of exon 21 significantly decreased chloride influx mediated by the SLC12A2 protein. Overall, our results strongly indicate that mutations influencing exon 21 of SLC12A2 represent a novel mechanism underlying deafness in humans.
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Affiliation(s)
- Hideki Mutai
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Meguro, Tokyo, Japan
| | - Koichiro Wasano
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Meguro, Tokyo, Japan
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Yukihide Momozawa
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Yoichiro Kamatani
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Kyoto-McGill International Collaborative School in Genomic Medicine, Graduate School of Medicine, Kyoto University, Yoshidakonoecho, Kyoto, Japan
| | - Fuyuki Miya
- Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Sawako Masuda
- Department of Otorhinolaryngology, National Hospital Organization Mie National Hospital, Tsu, Mie, Japan
| | - Noriko Morimoto
- Department of Otorhinolaryngology, National Center for Child Health and Development, Setagaya, Tokyo, Japan
| | - Kiyomitsu Nara
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Meguro, Tokyo, Japan
| | - Satoe Takahashi
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Tatsuhiko Tsunoda
- Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
- Laboratory for Medical Science Mathematics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Kazuaki Homma
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- The Hugh Knowles Center for Clinical and Basic Science in Hearing and Its Disorders, Northwestern University, Evanston, Illinois, United States of America
| | - Michiaki Kubo
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Tatsuo Matsunaga
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Meguro, Tokyo, Japan
- Medical Genetics Center, National Hospital Organization Tokyo Medical Center, Meguro, Tokyo, Japan
- * E-mail:
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10
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Affiliation(s)
- Mark D Kilby
- Fetal Medicine Centre, Birmingham Women's and Children's Foundation Trust, University of Birmingham, Birmingham, UK
| | - Yves Ville
- Department of Obstetrics Fetal Imaging and Fetal Medicine, Necker-Enfants-Malades Hospital, University of Paris, Paris, France
| | - Ganesh Acharya
- Division of Obstetrics and Gynaecology, Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
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11
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Stadio AD, Molini E, Gambacorta V, Giommetti G, Volpe AD, Ralli M, Lapenna R, Trabalzini F, Ricci G. Sensorineural Hearing Loss in Newborns Hospitalized in Neonatal Intensive Care Unit: An Observational Study. Int Tinnitus J 2019; 23:31-36. [PMID: 31469525 DOI: 10.5935/0946-5448.20190006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Children hospitalized in Neonatal Intensive Care Units (NICU) present an increased risk for Sensorineural Hearing Loss (SNHL) due to prematurity, hypoxia-ischemia, hyperventilation, low birth weight and the use of ototoxic drugs. The aim of this study was to assess the prevalence of SNHL in newborns hospitalized in a NICU using Transient Evoked Otoacoustic Emissions (TEOAE) and Automated Auditory Brainstem Responses (A-ABR) and analyze the associated risk factors. A sample of 153 newborns hospitalized in NICU underwent TEOAE, A-ABR and clinical ABR to evaluate the presence of hearing deficits. Prevalence of SNHL was calculated and odds ratio for specific risk factors was measured. One-hundred fifteen babies (86.7%) presented normal hearing at TEOAE and A-ABR. Fifteen children had a REFER response at TEOAE and a PASS response at A-ABR. Twenty-five children (16.3%) had a REFER A-ABR and were addressed to clinical ABR. A diagnosis of SNHL was made in 12 (7.8%) newborns. An increased risk of SNHL was observed in preterm children <28 weeks (p=0.0135), in children with neurological disorders (p=0.02), that underwent surgery (p=0.0002), affected from premature retinopathy (p=0.0006), craniofacial malformation (p=0.007) and that had sepsis (p=0.04). Additional risk factors for SNHL in our sample were a maternal disease during pregnancy (p=0.0011), cesarean delivery (p<0.0001) and a twin pregnancy (p<0.0001). SNHL in newborns is correlated with hospitalization in NICU. An accurate hearing screening associated to a rigorous clinical medical collection of data is necessary to promptly identify cases of SNHL in children with a special attention to those hospitalized in NICU and plan proper intervention.
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MESH Headings
- Evoked Potentials, Auditory, Brain Stem/physiology
- Female
- Follow-Up Studies
- Hearing Loss, Sensorineural/congenital
- Hearing Loss, Sensorineural/diagnosis
- Hearing Tests/methods
- Humans
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/diagnosis
- Infant, Premature, Diseases/epidemiology
- Intensive Care Units, Neonatal
- Male
- Neonatal Screening/methods
- Otoacoustic Emissions, Spontaneous/physiology
- Prevalence
- Risk Assessment
- Severity of Illness Index
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Affiliation(s)
- Arianna Di Stadio
- Department of Surgical and biomedical sciences, University of Perugia, Italy
| | - Egisto Molini
- Department of Surgical and biomedical sciences, University of Perugia, Italy
| | - Valeria Gambacorta
- Department of Surgical and biomedical sciences, University of Perugia, Italy
| | - Giorgia Giommetti
- Department of Surgical and biomedical sciences, University of Perugia, Italy
| | | | - Massimo Ralli
- Department of Sense organs, Sapienza University of Rome, Italy
| | - Ruggero Lapenna
- Department of Otolaryngology, Meyer Children University hospital, Florence, Italy
| | - Franco Trabalzini
- Department of Otolaryngology, Meyer Children University hospital, Florence, Italy
| | - Giampietro Ricci
- Department of Surgical and biomedical sciences, University of Perugia, Italy
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12
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Mazzaferri F, Cordioli M, Conti M, Storato S, Be G, Biban P, Concia E, Merighi M. Symptomatic congenital Cytomegalovirus deafness: the impact of a six-week course of antiviral treatment on hearing improvement. Infez Med 2017; 25:347-350. [PMID: 29286014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Congenital Cytomegalovirus infection is the leading non-genetic cause of neurosensory deafness. We compared the outcomes of a treated group of children to an untreated group. The effect of antiviral therapy on hearing improvement between baseline and 2-year follow-up was statistically significant. These results suggest that the benefit of 6-week therapy is not limited to preventing further hearing deterioration.
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Affiliation(s)
- Fulvia Mazzaferri
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Maddalena Cordioli
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Michela Conti
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Silvia Storato
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Giorgia Be
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Paolo Biban
- Neonatal Intensive Care Unit, Verona University Hospital, Verona, Italy
| | - Ercole Concia
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
| | - Mara Merighi
- Diagnostic and Public Health Department, Infectious Diseases and Tropical Medicine Section, University of Verona, Verona, Italy
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13
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De Franco E, Flanagan SE, Yagi T, Abreu D, Mahadevan J, Johnson MB, Jones G, Acosta F, Mulaudzi M, Lek N, Oh V, Petz O, Caswell R, Ellard S, Urano F, Hattersley AT. Dominant ER Stress-Inducing WFS1 Mutations Underlie a Genetic Syndrome of Neonatal/Infancy-Onset Diabetes, Congenital Sensorineural Deafness, and Congenital Cataracts. Diabetes 2017; 66:2044-2053. [PMID: 28468959 PMCID: PMC5482085 DOI: 10.2337/db16-1296] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 04/23/2017] [Indexed: 12/31/2022]
Abstract
Neonatal diabetes is frequently part of a complex syndrome with extrapancreatic features: 18 genes causing syndromic neonatal diabetes have been identified to date. There are still patients with neonatal diabetes who have novel genetic syndromes. We performed exome sequencing in a patient and his unrelated, unaffected parents to identify the genetic etiology of a syndrome characterized by neonatal diabetes, sensorineural deafness, and congenital cataracts. Further testing was performed in 311 patients with diabetes diagnosed before 1 year of age in whom all known genetic causes had been excluded. We identified 5 patients, including the initial case, with three heterozygous missense mutations in WFS1 (4/5 confirmed de novo). They had diabetes diagnosed before 12 months (2 before 6 months) (5/5), sensorineural deafness diagnosed soon after birth (5/5), congenital cataracts (4/5), and hypotonia (4/5). In vitro studies showed that these WFS1 mutations are functionally different from the known recessive Wolfram syndrome-causing mutations, as they tend to aggregate and induce robust endoplasmic reticulum stress. Our results establish specific dominant WFS1 mutations as a cause of a novel syndrome including neonatal/infancy-onset diabetes, congenital cataracts, and sensorineural deafness. This syndrome has a discrete pathophysiology and differs genetically and clinically from recessive Wolfram syndrome.
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Affiliation(s)
- Elisa De Franco
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K
| | - Sarah E Flanagan
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K
| | - Takuya Yagi
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Damien Abreu
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Jana Mahadevan
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Matthew B Johnson
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K
| | - Garan Jones
- Department of Molecular Genetics, Royal Devon & Exeter NHS Foundation Trust, Exeter, U.K
| | - Fernanda Acosta
- Department of Pediatrics, Centro Médico Nacional 20 de Noviembre ISSSTE, Mexico City, Mexico
| | - Mphele Mulaudzi
- Department of Paediatrics and Child Health, University of Pretoria Medical School, Pretoria, South Africa
| | - Ngee Lek
- KK Women's and Children's Hospital, Singapore
- Duke-NUS Medical School, National University of Singapore, Singapore
| | - Vera Oh
- KK Women's and Children's Hospital, Singapore
| | - Oliver Petz
- Praxis für Kinder-und Jugendmedizin, Diabetologische Schwerpunktpraxis, Coesfeld, Germany
| | - Richard Caswell
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K
| | - Sian Ellard
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K
- Department of Molecular Genetics, Royal Devon & Exeter NHS Foundation Trust, Exeter, U.K
| | - Fumihiko Urano
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Andrew T Hattersley
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, U.K.
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14
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Asma A, Roslenda AR, Fadzilah I, Mazita A, Marina MB, Ab Aziz A. Bilateral microtia, canal atresia and aplasia of cochleovestibular nerve. Med J Malaysia 2017; 72:135-137. [PMID: 28473682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A six-month-old baby with congenital patent ductus arteriosus (PDA), bilateral microtia and canal atresia was referred for hearing assessment. The audiology assessment revealed bilateral profound hearing loss, which is atypical for a case of pure canal atresia. Imaging was performed much earlier than usual and, as suspected, the patient also had bilateral severe inner ear anomaly. It is extremely rare for a person to have both external and inner ear anomaly because of the different embryological origin. The only suitable hearing rehabilitation option for this kind of patients is brainstem implant. However, the parents had opted for sign language as a form of communication.
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Affiliation(s)
- A Asma
- Universiti Kebangsaan Malaysia Medical Centre, Head & Neck Surgery, Department of Otolaryngology, Kuala Lumpur, Malaysia.
| | - A R Roslenda
- Universiti Kebangsaan Malaysia Medical Centre, Head & Neck Surgery, Department of Otolaryngology, Kuala Lumpur, Malaysia
| | - I Fadzilah
- Sungai Buloh Hospital, Department of Otorhinolaryngology-Head & Neck Surgery, Malaysia
| | - A Mazita
- KPJ Klang Specialist Hospital, Klang, Selangor, Malaysia
| | - M B Marina
- Universiti Kebangsaan Malaysia Medical Centre, Head & Neck Surgery, Department of Otolaryngology, Kuala Lumpur, Malaysia
| | - A Ab Aziz
- Universiti Kebangsaan Malaysia, Department of Radiology, Kuala Lumpur, Malaysia
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15
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Liu CC, Livingstone D, Yunker WK. The role of bone conduction hearing aids in congenital unilateral hearing loss: A systematic review. Int J Pediatr Otorhinolaryngol 2017; 94:45-51. [PMID: 28167010 DOI: 10.1016/j.ijporl.2017.01.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/02/2017] [Accepted: 01/04/2017] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To systematically review the literature on the audiological and/or quality of life benefits of a bone conduction hearing aid (BCHA) in children with congenital unilateral conductive or sensorineural deafness. METHODS A systematic search was performed according to the PRISMA guidelines using the PubMed, Medline, and Embase databases. Data were collected on the following outcomes of interest: speech reception threshold, speech discrimination, sound localization, and quality of life measures. Given the heterogeneity of the data for quantitative analysis, the results are qualitatively summarized. RESULTS Eight studies were included in the review. Four studies examined the audiological outcomes associated with bone conduction hearing aid implantation. There was a consistent gain in speech reception thresholds and speech discrimination, especially in noisy environments. Results pertaining to sound localization was inconsistent. The studies that examined quality of life measures reported a high usage rate of BCHAs among children. Quality of life improvements are reported with suggested benefit in the subdomain of learning. CONCLUSION Given the potential benefits of a BCHA, along with the fact that it can be safely trialed using a headband, it is reasonable to trial a BCHA in children with congenital unilateral deafness. Should the trial offer audiological and/or quality of life benefits for the individual child, then BCHA implantation can be considered.
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Affiliation(s)
- C Carrie Liu
- Division of Otolaryngology - Head and Neck Surgery, Department of Surgery, Cumming School of Medicine, University of Calgary, Canada
| | - Devon Livingstone
- Division of Otolaryngology - Head and Neck Surgery, Department of Surgery, Cumming School of Medicine, University of Calgary, Canada
| | - Warren K Yunker
- Division of Otolaryngology - Head and Neck Surgery, Department of Surgery, Cumming School of Medicine, University of Calgary, Canada; Division of Pediatric Surgery, Department of Surgery, Cumming School of Medicine, University of Calgary, Canada.
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16
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Rudić M, Wong W, Viner S, Strachan D, Raine C. Bilateral cochlear nerve absence in a 3 year old child with VACTERL association. Int J Pediatr Otorhinolaryngol 2017; 93:71-74. [PMID: 28109502 DOI: 10.1016/j.ijporl.2016.12.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/21/2016] [Accepted: 12/21/2016] [Indexed: 11/19/2022]
Abstract
We report a case of a 3 year old boy with bilateral profound sensorineural hearing loss diagnosed from New Born Hearing Screening, with severe form of VACTERL association. He was referred to our Cochlear Implant Unit for assessment with regard to the possibility of cochlear implantation. MRI findings have showed bilateral vestibulocochlear cystic abnormalities. Only single nerve noted within the IAM on the right and likely single nerve within the IAM on the left. Hence, decision was made not to offer cochlear implantation. This is the first report of severe bilateral cochleovestibular nerve abnormalities to be associated with VACTERL.
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Affiliation(s)
- Milan Rudić
- Yorkshire Auditory Implant Service (YAIS), Bradford Royal Infirmary, Listening for Life Centre, Bradford Teaching Hospitals NHS Foundation Trust, UK.
| | - Winson Wong
- Yorkshire Auditory Implant Service (YAIS), Bradford Royal Infirmary, Listening for Life Centre, Bradford Teaching Hospitals NHS Foundation Trust, UK
| | - Stuart Viner
- Radiology Department, Bradford Royal Infirmary, Bradford Teaching Hospitals NHS Foundation Trust, UK
| | - David Strachan
- Yorkshire Auditory Implant Service (YAIS), Bradford Royal Infirmary, Listening for Life Centre, Bradford Teaching Hospitals NHS Foundation Trust, UK
| | - Christopher Raine
- Yorkshire Auditory Implant Service (YAIS), Bradford Royal Infirmary, Listening for Life Centre, Bradford Teaching Hospitals NHS Foundation Trust, UK
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17
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Isaiah A, Lee D, Lenes-Voit F, Sweeney M, Kutz W, Isaacson B, Roland P, Lee KH. Clinical outcomes following cochlear implantation in children with inner ear anomalies. Int J Pediatr Otorhinolaryngol 2017; 93:1-6. [PMID: 28109477 DOI: 10.1016/j.ijporl.2016.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 11/28/2016] [Accepted: 12/01/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE A significant proportion of children with congenital hearing loss who are candidates for cochlear implants (CIs) may have inner ear malformations (IEMs). Surgical and speech outcomes following CI in these children have not been widely reported. METHODS The charts of children who were evaluated for a CI between 1/1/1986 and 12/31/2014 at a university-based tertiary level pediatric cochlear implant center were reviewed. Principal inclusion criteria included (i) age 1-18 years, (ii) history of bilateral severe to profound sensorineural hearing loss, and (iii) limited benefit from binaural amplification. Exclusion criteria included (i) underlying diagnosis of neurodevelopmental disorder and (ii) lack of follow up for speech assessment if a CI was performed. The following outcome measures were reviewed: (i) imaging findings with magnetic resonance imaging or high resolution computed tomography, (ii) intraoperative complications, and (iii) speech perception categorized as the ability to perceive closed set, open set, or none. RESULTS The prevalence of IEMs was 27% (102 of 381), of which 79% were bilateral. Cochlear dysplasia accounted for 30% (40 of 136) of the anomalies. Seventy-eight of the 102 patients received a CI (78%). Surgery was noted to be challenging in 24% (19 of 78), with a perilymphatic gusher being the most common intraoperative finding. Cochlear dysplasia, vestibular dysplasia and cochlear nerve hypoplasia were associated with poor speech perception (open OR closed set speech recognition scores, 0-23%), although the outcomes in children with enlarged vestibular aqueduct were similar to those of children with normal inner ear anatomy (65%). CONCLUSIONS Cochlear implantation is safe in children with IEMs. However, the speech perception outcomes are notably below those of patients with normal anatomy, with the exception of when an enlarged vestibular aqueduct is present.
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Affiliation(s)
- Amal Isaiah
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | | | - Felicity Lenes-Voit
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Melissa Sweeney
- UT Dallas Callier Center for Communication Disorders, Dallas, TX, USA
| | - Walter Kutz
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Brandon Isaacson
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Peter Roland
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kenneth H Lee
- Department of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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18
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Chen Y, Wong LLN, Zhu S, Xi X. Vocabulary development in Mandarin-speaking children with cochlear implants and its relationship with speech perception abilities. Res Dev Disabil 2017; 60:243-255. [PMID: 27816256 DOI: 10.1016/j.ridd.2016.10.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 10/19/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND China has the largest population of children with hearing impairments and cochlear implantation is gaining popularity there. However, the vocabulary development in this population is largely unexplored. AIMS This study examined early vocabulary outcomes, factors influencing early vocabulary development and the relationship between speech perception and vocabulary development in Mandarin-speaking children during the first year of cochlear implant use. METHODS AND PROCEDURES A battery of vocabulary tests was administered to 80 children before implantation and 3, 6, and 12 months after implantation. Demographic information was obtained to evaluate their relationships with vocabulary outcomes. OUTCOMES AND RESULTS The Mandarin-speaking children, who received their cochlear implants before 3 years of age, developed vocabulary at a rate faster than that of their same-aged peers with normal hearing. Better pre-implant hearing levels, younger age at implantation, and higher maternal education level contributed to the early vocabulary development. The trajectories of speech perception development highly correlated with those of vocabulary development during 3 to 12 months of CI use. CONCLUSIONS and Implications: These findings imply that the vocabulary development of children implanted before 3 years of age may catch up with that of their hearing peers.
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Affiliation(s)
- Yuan Chen
- Clinical Hearing Sciences (CHearS) Laboratory, Division of Speech and Hearing Sciences, The University of Hong Kong, Hong Kong, China.
| | - Lena L N Wong
- Clinical Hearing Sciences (CHearS) Laboratory, Division of Speech and Hearing Sciences, The University of Hong Kong, Hong Kong, China
| | - Shufeng Zhu
- Department of Electrical & Electronic Engineering, South University of Science and Technology of China, Shenzhen, China
| | - Xin Xi
- Department of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Beijing, China
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19
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Klingebiel R, Bockmühl U, Werbs M, Freigang B, Vorwerk W, Thieme N, Lehmann R. Visualization of inner ear dysplasias in patients with sensorineural hearing loss: High-resolution MR imaging and volume-rendered reconstructions. Acta Radiol 2016; 42:574-81. [PMID: 11736704 DOI: 10.1080/028418501127347403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: We evaluated a data acquisition and post-processing protocol for inner ear (IE) assessment by MR imaging in patients, suffering from various labyrinth malformations. Material and Methods: MR IE studies of 158 consecutive patients (316 IEs) suffering from sensorineural hearing loss without evidence of an acoustic neurinoma were reviewed for pathologies of the IE and internal acoustic meatus. High-resolution MR data of all abnormal IE studies (n=45) were post-processed to previously standardized 3D volume rendered (VR) reconstructions. Results: In 9 patients (5.7%) the following IE dysplasias were detected: malformation of the cochlea (6 IEs), vestibulum (4 IEs), semicircular canals (12 IEs) and vestibular aqueduct/endolymphatic sac (10 IEs). One patient showed evidence of an aplasia of the vestibulocochlear nerve. In 4 patients multiple IE dysplasias were encountered. Comprehensive 3D visualization of all labyrinthine dysplasias was achieved by the use of two VR reconstructions. The overall time for bilateral IE assessment amounted to 30-35 min. Conclusion: The imaging protocol allows for rapid and comprehensive visualization of various IE dysplasias, based on a limited number of VR reconstructions.
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Affiliation(s)
- R Klingebiel
- Neuroradiology Section, Department of Radiology, Charité Campus Mitte, Humboldt University, Berlin, Germany
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20
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Ai Y, Xu L, Li L, Li J, Luo J, Wang M, Fan Z, Wang H. The auditory characteristics of children with inner auditory canal stenosis. Acta Otolaryngol 2016; 136:687-91. [PMID: 26981851 DOI: 10.3109/00016489.2016.1152505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Conclusions This study shows that the prevalence of auditory neuropathy spectrum disorder (ANSD) in the children with inner auditory canal (IAC) stenosis is much higher than those without IAC stenosis, regardless of whether they have other inner ear anomalies. In addition, the auditory characteristics of ANSD with IAC stenosis are significantly different from those of ANSD without any middle and inner ear malformations. Objectives To describe the auditory characteristics in children with IAC stenosis as well as to examine whether the narrow inner auditory canal is associated with ANSD. Method A total of 21 children, with inner auditory canal stenosis, participated in this study. A series of auditory tests were measured. Meanwhile, a comparative study was conducted on the auditory characteristics of ANSD, based on whether the children were associated with isolated IAC stenosis. Results Wave V in the ABR was not observed in all the patients, while cochlear microphonic (CM) response was detected in 81.1% ears with stenotic IAC. Sixteen of 19 (84.2%) ears with isolated IAC stenosis had CM response present on auditory brainstem responses (ABR) waveforms. There was no significant difference in ANSD characteristics between the children with and without isolated IAC stenosis.
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MESH Headings
- Audiometry
- Child
- Child, Preschool
- Ear, Inner/abnormalities
- Ear, Inner/diagnostic imaging
- Ear, Inner/physiopathology
- Evoked Potentials, Auditory, Brain Stem
- Female
- Hearing
- Hearing Loss, Sensorineural/congenital
- Hearing Loss, Sensorineural/diagnostic imaging
- Hearing Loss, Sensorineural/etiology
- Hearing Loss, Sensorineural/physiopathology
- Humans
- Infant
- Magnetic Resonance Imaging
- Male
- Otoacoustic Emissions, Spontaneous
- Retrospective Studies
- Temporal Bone/diagnostic imaging
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Affiliation(s)
- Yu Ai
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- b Clinical Auditory Center, Eye & Ear Infirmary of Shandong Provincial Hospital Group , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
- d Artificial Auditory Engineering Centre of Shandon Province , Jinan , PR China
| | - Lei Xu
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- b Clinical Auditory Center, Eye & Ear Infirmary of Shandong Provincial Hospital Group , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
- d Artificial Auditory Engineering Centre of Shandon Province , Jinan , PR China
| | - Li Li
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
| | - Jianfeng Li
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
| | - Jianfen Luo
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- b Clinical Auditory Center, Eye & Ear Infirmary of Shandong Provincial Hospital Group , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
- d Artificial Auditory Engineering Centre of Shandon Province , Jinan , PR China
| | - Mingming Wang
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
| | - Zhaomin Fan
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
- d Artificial Auditory Engineering Centre of Shandon Province , Jinan , PR China
| | - Haibo Wang
- a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China
- c Shandong Provincial Key Laboratory of Otology , Jinan , PR China
- d Artificial Auditory Engineering Centre of Shandon Province , Jinan , PR China
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Chen Y, Wong LLN, Zhu S, Xi X. Early speech perception in Mandarin-speaking children at one-year post cochlear implantation. Res Dev Disabil 2016; 49-50:1-12. [PMID: 26647002 DOI: 10.1016/j.ridd.2015.11.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 11/16/2015] [Accepted: 11/19/2015] [Indexed: 06/05/2023]
Abstract
PURPOSE The aim in this study was to examine early speech perception outcomes in Mandarin-speaking children during the first year of cochlear implant (CI) use. METHOD A hierarchical early speech perception battery was administered to 80 children before and 3, 6, and 12 months after implantation. Demographic information was obtained to evaluate its relationship with these outcomes. RESULTS Regardless of dialect exposure and whether a hearing aid was trialed before implantation, implant recipients were able to attain similar pre-lingual auditory skills after 12 months of CI use. Children speaking Mandarin developed early Mandarin speech perception faster than those with greater exposure to other Chinese dialects. In addition, children with better pre-implant hearing levels and younger age at implantation attained significantly better speech perception scores after 12 months of CI use. Better pre-implant hearing levels and higher maternal education level were also associated with a significantly steeper growth in early speech perception ability. CONCLUSIONS Mandarin-speaking children with CIs are able to attain early speech perception results comparable to those of their English-speaking counterparts. In addition, consistent single language input via CI probably enhances early speech perception development at least during the first-year of CI use.
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Affiliation(s)
- Yuan Chen
- Clinical Hearing Sciences (CHearS) Laboratory, Division of Speech and Hearing Sciences, The University of Hong Kong, 7th Floor, Meng Wah Complex, Pokfulam, Hong Kong, China.
| | - Lena L N Wong
- Clinical Hearing Sciences (CHearS) Laboratory, Division of Speech and Hearing Sciences, The University of Hong Kong, 7th Floor, Meng Wah Complex, Pokfulam, Hong Kong, China
| | - Shufeng Zhu
- Department of Electrical and Electronic Engineering, South University of Science and Technology of China, China
| | - Xin Xi
- Department of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Beijing, China
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22
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Kong D, Fu K, Zhao H. [The progress of inner ear malformation in radiological research]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:88-90. [PMID: 27197469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inner ear malformations are anomalies linking to development insults at different periods of embryogenesis,which are common causes of congenital sensorineural hearing loss. The evaluation of pediatric sensorineural hearing loss mostly depends on high-resolution computed tomography and magnetic resonance imaging, which can excellently depict the temporal bones and inner ear malformations.
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Zhou Y, Qing J, Dong Y, Nie J, Li J, Wang C, Liu Y, Peng T, Duan M, Liu X, Xie D. The role of transcription factors of neurosensory cells in non-syndromic sensorineural hearing loss with or without inner ear malformation. Acta Otolaryngol 2015; 136:277-82. [PMID: 26634621 DOI: 10.3109/00016489.2015.1109706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSIONS Previous studies have stated the roles and correlation of the four TFs (Sox2, Atoh1, Neurog1, and Neurod1) in the development of neurosensory cells. but whether they are inherited pathogenic factors to cause non-syndromic sensorineural hearing loss is unknown so far. This is the first time for screening the Sox2, Atoh1, Neurog1, and Neurod1 genes in children with NSHL. The c.133A > G in Neurod1 gene is a polymorphism, which is not associated with NSHL. Although these genes are the recognized TFs for modulating the development and transformation of NSCs, they may not be the inherited pathogenic factors to cause congenital severe or profound NSHL directly. OBJECTIVE To investigate the effect of the transcription factors (TFs) for the development of neurosensory cells (NSCs) and to explore the genetic etiology of congenital profound non-syndromic sensorineural hearing loss (NSHL). METHODS Children with NSHL, from multi-national and regional group, and control group were recruited to screen for the most common mutations for non-syndromic deafness among East Asian (mtDNA 12S rRNA: 1555A > G, 1494C > T; SLC26A4: IVS7-2 A > G, 2168 C > T). And mutational analysis of the coding regions in Sox2, Atoh1 and Neurog1, Neurod1 genes were performed. RESULTS Only the c.133A > G (p. Ala45Thr) in the Neurod1 gene was detected in this study. The allele frequencies of this variant were 88.00% and 84.88% in the inner ear malformation group and the normal inner ear group, respectively, while 90.85% of children in the control group carried c.133A > G. This variant existed in every group commonly and had no significant difference among them. No variant in the other two TFs was detected in this cohort.
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Affiliation(s)
- Yuan Zhou
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Jie Qing
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Yunpeng Dong
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Jin Nie
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Jingkun Li
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Chunmei Wang
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Yuyuan Liu
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Tao Peng
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
| | - Maoli Duan
- b Department of Clinical Science, Intervention and Technology, Department of Otolaryngology Head and Neck Surgery, Department of Neurotology and Audiology , Karolinska Institutet , Stockholm , Sweden
| | - Xuezhong Liu
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
- c Department of Otolaryngology, Miller School of Medicine , University of Miami , Miami , FL , USA
| | - Dinghua Xie
- a Department of Otolaryngology Head and Neck Surgery , Institute of Otology, the Second Xiangya Hospital, Central South University , Changsha , PR China
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Zhou B, Lin S, Lin Y, Fang Z, Ye S, Zhang R. [Imaging and audiology analysis of the congenital inner ear malformations]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2015; 29:1950-1953. [PMID: 26911056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To investigate imaging and audiology features of temporal bone and analyze the classification and prevalence of inner ear abnormalities in children with sensorineural hearing loss. METHOD Children who were diagnosed with sensorineural hearing loss were examined by high resolution CT and the inner ear fluid of MRI. And each chart was retrospectively reviewed to determine the imaging and audiology features. RESULT There were 125 patients(232 ears) found with inner ear malformation in 590 children with SNHL. About 21.71% of the inner ear malformation occurred in severe and profound hearing loss ears, and 12.85% occurred in r moderate hearing loss ears. The inner ear malformation rate in normal hearing ears were 13.59%. CONCLUSION CT and MRI examinations of temporal bone are important diagnostic tools to indentify inner ear malformations. Inner ear malformations are almost bilateral and hearing loss are profoud. Cochleo-vestibular malformations and large vestibular aqueduct are the 2 most frequent deformities. Among the children with SNHL, deformity rate in the severe and profound hearing loss ears is higher than that in moderate hearing loss ear. Inner ear malformations can exist in people with normal hearing.
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Huang L, Zheng W, Wu C, Wei X, Wu X, Wang Y, Zheng H. Diffusion Tensor Imaging of the Auditory Neural Pathway for Clinical Outcome of Cochlear Implantation in Pediatric Congenital Sensorineural Hearing Loss Patients. PLoS One 2015; 10:e0140643. [PMID: 26485661 PMCID: PMC4618518 DOI: 10.1371/journal.pone.0140643] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 09/29/2015] [Indexed: 11/18/2022] Open
Abstract
Although conventional structural MRI provides vital information in the evaluation of congenital sensorineural hearing loss (SNHL), it is relatively insensitive to white matter microstructure. Our objective was to evaluate possible changes in microstructure of the auditory pathway in children with congenital sensorineural hearing loss (SNHL), and the possible distinction between good and poor outcome of cochlear implantation (CI) patients by using diffusion tensor imaging (DTI). Twenty-four patients with congenital SNHL and 20 healthy controls underwent conventional MRI and DTI examination using a 1.5T MR scanner. The DTI metrics of fractional anisotropy (FA) and mean diffusivity (MD) of six regions of interest (ROIs) positioned along the auditory pathway—the trapezoid body, superior olivary nucleus, inferior colliculus, medial geniculate body, auditory radiation and white matter of Heschl's gyrus—was measured in all subjects. Among the 24 patients, 8 patients with a categorie of auditory performance (CAP) score over 6 were classified into the good outcome group, and 16 patients with a CAP score below 6 were classified into the poor outcome group. A significant decrease was observed in FA values while MD values remained unchanged at the six ROIs of SNHL patients compared with healthy controls. Compared to good outcome subjects, poor outcome subjects displayed decreased FA values at all of the ROIs. No changes were observed in MD values. Correlation analyses only revealed strong correlations between FA values and CAP scores, and strong correlations between CAP scores and age at implant were also found. No correlations of FA values with age at implant were observed. Our results show that preoperative DTI can be used to evaluate microstructural alterations in the auditory pathway that are not detectable by conventional MR imaging, and may play an important role in evaluating the outcome of CI. Early cochlear implantation might be more effectively to restore hearing in SNHL patients.
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Affiliation(s)
- Lexing Huang
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Wenbin Zheng
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
- * E-mail:
| | - Chunxiao Wu
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Xiaoqin Wei
- Department of E.N.T, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Xianguang Wu
- Department of E.N.T, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yanting Wang
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Hongyi Zheng
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
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26
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Ao L, Liu Y. [Clinical diagnose and significance of congenital sensorineural hearing loss combined with BPES]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2015; 29:1660-1663. [PMID: 26790275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To analyze congenital sensorineural hearing loss combined with blepharophimosis-ptosis-epicanthus inversus syndrome (BPES). For the case of cochlear implantation to child with congenital sensorineural deafness combined BPES, accomplish routine examination and assessment, combining with literature to analyze the clinical diagnosis of this disease and its significance. Sensorineural hearing loss is a common congenital diseases with neonatal incidence of 1 per thousand - 3 per thousand, 50%-70% of deafness is associated with genetic factors, the incidence of congenital sensorineural hearing loss combined with eye disease is about 40%-60%, mainly reflected in ametropia and retinopathy. BPES's main clinical manifestations is blepharophimosis, ptosis, epicanthus inversus, and telecanthus. BPES is a rare autosomal dominant disease caused by FOXL 2 gene mutation, sometimes associated with retarded growth, delayed development, congenital heart disease, and microcephaly. Suffering from both sensorineural hearing loss and BPES is rare in reported literature. This case is diagnosed by clinical examination, without visual impairment. Facial nerve dysplasia has been found during the surgery. For congenital deafness patients with eye disease or other diseases, timely and correct diagnosis has important clinical significance, which can improve the diagnostic rate and make it coming true to early intervention, and then, effectively improve the quality of the patients. There are few literature reports, of patients with two kinds of genetic diseases. Our inference is that the cases are rare or the patients has visited different departments and ignored the other systems' signs. Therefore, in such doubtful cases, we should do the professional comprehensive examination in daily clinical work in order to avoid missed diagnosis or delayed treatment and intervention. By analyzing this case, the patient may also suffer from facial nerve dysplasia. Preoperatively viewing CT scan and operatively facial nerve monitor being used can avoid the occurrence of surgical complications.
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Diao M, Sun J, Liu Y. [One case of a pregnant femal taking realgar induceing congenital inner ear malformation]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2015; 29:1390-1391. [PMID: 26685413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A pregnant female taken realgar because of superstition, which caused the baby congenital deafness. Auditory test indicated that bilateral auditory brainstem response (ABR) hearing threshold level was greater than 90 dB nHL and auditory steady state response (ASSR) hearing level ranging from 0.5 kHz to 4 kHz was beyond 110 dB HL. Temporal bone CT showed that bilateral cochlear and semicircular canal malformations, with internal auditory canal broadened.
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Minami SB, Takegoshi H, Shinjo Y, Enomoto C, Kaga K. Usefulness of measuring electrically evoked auditory brainstem responses in children with inner ear malformations during cochlear implantation. Acta Otolaryngol 2015; 135:1007-15. [PMID: 26062093 DOI: 10.3109/00016489.2015.1048377] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSIONS EABR is a reliable and effective way of objectively confirming device function and implant-responsiveness of the peripheral auditory neurons up to the level of the brainstem in cases of inner ear malformation. OBJECTIVE To investigate the usefulness of measuring the intra-operative electrically evoked compound action potential (ECAP) and electrically evoked auditory brainstem response (EABR) in patients with and without congenital inner ear anomalies during cochlear implantation. METHOD Thirty-eight consecutive children (40 ears) aged 5 or younger with congenital profound hearing loss. Twenty-four (25 ears) lacked congenital inner ear anomalies. The 14 patients (15 ears) with a malformation had common cavities (four ears), incomplete partition type I (three ears), cochlea hypoplasia type III (three ears), enlarged vestibular aqueduct (four ears), and cochlear nerve canal stenosis (one ear). Main outcome measures are ECAP and EABR responses. RESULTS Of the 25 ears lacking any malformation, 21, three, and one showed 'Good', 'Variable', and 'No' ECAP responses, respectively, and 24 and one showed 'Good' and 'Variable' intra-cochlear responses, respectively. Of the 15 ears with a malformation, two showed 'Good' ECAP responses, nine had 'Variable' ECAP responses, and four showed 'No' ECAP responses. Moreover, five showed 'Good' EABR responses and 10 showed 'Variable' EABR responses.
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Affiliation(s)
- Shujiro B Minami
- National Institute of Sensory Organs, National Tokyo Medical Center , Tokyo , Japan
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29
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Ryhänen SJ, Anttila P. [Hereditary macrothrombocytopenia and hearing loss]. Duodecim 2015; 131:871-874. [PMID: 26237886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We describe an autosomal dominant hereditary thrombocytopenia syndrome caused by a defect in the MYH9 gene. Of our three patients, all have thrombocytopenia from birth, and their thrombocytes are large in size. The hemorrhagic tendency caused by thrombocytopenia is often mild. Approximately 60% of the patients develop sensorineural hearing loss and approx. 30% develop renal insufficiency that frequently progresses to require hemodialysis. It is of particular importance to recognize the thrombocytopenia as being hereditary and permanent in order to save the patients from useless and harmful therapeutic efforts.
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30
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Lee GD, Chen VM, Barnes AC, Goldman DR, Duker JS. Retinal telangiectasis detected during a vision screening examination in a child with hearing loss led to the diagnosis of facioscapulohumeral muscular dystrophy. J AAPOS 2014; 18:303-5. [PMID: 24924285 DOI: 10.1016/j.jaapos.2014.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/07/2014] [Accepted: 02/15/2014] [Indexed: 11/17/2022]
Abstract
A 2-year-old girl with congenital sensorineural hearing loss was found to have retinal exudation and subretinal fluid in her left eye. Further investigation revealed leaking retinal telangiectasias in her left eye and extensive areas of peripheral retinal nonperfusion in both eyes. A clinical diagnosis of facioscapulohumeral muscular dystrophy (FSHD) was confirmed by genetic testing. The patient was followed with serial intraoperative optical coherence tomography (OCT) scans, which demonstrated subretinal fluid in the macula and its subsequent resolution after treatment. She underwent 6 rounds of panretinal photocoagulation and 2 injections of intravitreal bevacizumab, which resolved the subretinal fluid and exudates.
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Affiliation(s)
- Gregory D Lee
- Tufts Medical Center Ophthalmology, Boston, Massachusetts.
| | - Vicki M Chen
- Tufts Medical Center Ophthalmology, Boston, Massachusetts
| | | | | | - Jay S Duker
- Tufts Medical Center Ophthalmology, Boston, Massachusetts
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Mijares E, Báez L, Cabrera L, Pérez-Abalo MC, Torres-Fortuny A. Hearing screening using auditory steady state responses obtained by simultaneous air- and bone-conduction stimuli. Acta Otorrinolaringol Esp 2014; 66:8-15. [PMID: 24766784 DOI: 10.1016/j.otorri.2014.02.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/09/2014] [Indexed: 11/19/2022]
Abstract
INTRODUCTION AND OBJECTIVES Minimising false positives rates is an important goal of universal newborn hearing screening programmes. An adequate way for reaching that goal could be differentiating between transient conductive hearing losses (false positives) and permanent sensorineural hearing impairments (true positives) by means of a methodology that studies electrophysiological responses obtained using both air- and bone-conduction stimuli. Our objective was to evaluate the efficiency of an automated hearing screening test based on auditory steady state responses obtained using simultaneous air- and bone-conduction stimuli. METHODS A sample of 80 high risk babies lees than 2 months of born were screened using the automatic screening test. A confirmatory clinical and electrophysiological evaluation was used as the gold standard. RESULTS The estimated diagnostic efficiency of this screening test was equivalent (100% sensitivity and 97.7% specificity) to the efficiency reported for otoacoustic emissions and automated auditory brainstem responses. The introduction of bone conduction in the screening reduced the false positive rate from 13.3% to 2.2%. The test duration was 5.3 (± 1.9)min. In 34% of babies only one repetition of the test was needed to raising the result. CONCLUSIONS The screening test performed quite well in this initial clinical trial, differentiating transient conductive hearing losses from permanent neurosensory impairments and improving the diagnostic efficiency of auditory steady state responses.
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Affiliation(s)
- Eleina Mijares
- Departamento de Audición y Lenguaje, Centro de Neurociencias de Cuba, La Habana, Cuba.
| | - Lidia Báez
- Departamento de Neurofisiología, Hospital Pediátrico William Soler, La Habana, Cuba
| | - Licer Cabrera
- Departamento de Neurofisiología, Hospital Pediátrico William Soler, La Habana, Cuba
| | - María C Pérez-Abalo
- Departamento de Audición y Lenguaje, Centro de Neurociencias de Cuba, La Habana, Cuba
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Albertz N, Cardemil F, Rahal M, Mansilla F, Cárdenas R, Zitko P. [Universal screening program and early intervention (USPEI) in congenital bilateral sensorineural hearing loss in Chile]. Rev Med Chil 2014; 141:1057-63. [PMID: 24448863 DOI: 10.4067/s0034-98872013000800013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 05/01/2013] [Indexed: 11/17/2022]
Abstract
Congenital hearing loss is the total or partial inability to hear sounds through the ears. It is the most common disability in newborns in Chile and worldwide, and is a permanent condition. The direct impact on children who are not adequately diagnosed is the alteration in acquisition of language and cognitive skills and a decline in their social and school insertion, jeopardizing their professional and potentially productive life. Universal screening programs for hearing loss are essential for the diagnosis, since 50% of infants with hearing loss have no known risk factor. Screening before one month of age, confirmation before 3 months, and effective intervention before 6 months, allows the development of these children as if they had normal hearing. In Chile there is a selective program of screening for infants aged less than 32 weeks or 1,500 grams, as part of Explicit Health Guarantees, but it covers only 0.9% of newborns per year. Therefore, a large majority of children remain without diagnosis. The aim of this review is to compare the situation in Chile with other countries, raising the need to move towards a universal neonatal hearing loss screening program, and propose necessary conditions in terms of justification and implementation of a universal screening public policy.
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Blum M, Distl O. [Phenotypic trends and breeding values for canine congenital sensorineural deafness in Dalmatian dogs]. Berl Munch Tierarztl Wochenschr 2014; 127:70-76. [PMID: 24490346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present study, breeding values for canine congenital sensorineural deafness, the presence of blue eyes and patches have been predicted using multivariate animal models to test the reliability of the breeding values for planned matings. The dataset consisted of 6669 German Dalmatian dogs born between 1988 and 2009. Data were provided by the Dalmatian kennel clubs which are members of the German Association for Dog Breeding and Husbandry (VDH). The hearing status for all dogs was evaluated using brainstem auditory evoked potentials. The reliability using the prediction error variance of breeding values and the realized reliability of the prediction of the phenotype of future progeny born in each one year between 2006 and 2009 were used as parameters to evaluate the goodness of prediction through breeding values. All animals from the previous birth years were used for prediction of the breeding values of the progeny in each of the up-coming birth years. The breeding values based on pedigree records achieved an average reliability of 0.19 for the future 1951 progeny. The predictive accuracy (R2) for the hearing status of single future progeny was at 1.3%. Combining breeding values for littermates increased the predictive accuracy to 3.5%. Corresponding values for maternal and paternal half-sib groups were at 3.2 and 7.3%. The use of breeding values for planned matings increases the phenotypic selection response over mass selection. The breeding values of sires may be used for planned matings because reliabilities and predictive accuracies for future paternal progeny groups were highest.
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Affiliation(s)
- Meike Blum
- Institut für Tierzucht und Vererbungsforschung, Stiftung Tierärztliche Hochschule Hannover
| | - Ottmar Distl
- Institut für Tierzucht und Vererbungsforschung, Stiftung Tierärztliche Hochschule Hannover
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Abstract
A genome-wide association study (GWAS) was performed for 235 Dalmatian dogs using the canine Illumina high density bead chip to identify quantitative trait loci (QTL) associated with canine congenital sensorineural deafness (CCSD). Data analysis was performed for all Dalmatian dogs and in addition, separately for brown-eyed and blue-eyed dogs because of the significant influence of eye colour on CCSD in Dalmatian dogs. Mixed linear model analysis (MLM) revealed seven QTL with experiment-wide significant associations (-log10P>5.0) for CCSD in all Dalmatian dogs. Six QTL with experiment-wide significant associations for CCSD were found in brown-eyed Dalmatian dogs and in blue-eyed Dalmatian dogs, four experiment-wide significant QTL were detected. The experiment-wide CCSD-associated SNPs explained 82% of the phenotypic variance of CCSD. Five CCSD-loci on dog chromosomes (CFA) 6, 14, 27, 29 and 31 were in close vicinity of genes shown as causative for hearing loss in human and/or mouse.
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Affiliation(s)
- Susanne Kluth
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
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Smyth CM, Sinnathuray AR, Hughes AE, Toner JG. Cochlear implantation in keratitis–ichthyosis–deafness syndrome – 10-year follow-up of two patients. Cochlear Implants Int 2013; 13:54-9. [PMID: 22340753 DOI: 10.1179/146701011x12950038111936] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- C M Smyth
- Department of Otolaryngology, Belfast City Hospital, UK.
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Stew BT, Fishpool SJC, Owens D, Quine S. Muckle-Wells syndrome: a treatable cause of congenital sensorineural hearing loss. B-ENT 2013; 9:161-163. [PMID: 23909124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
Muckle-Wells syndrome (MWS) is a rare autosomal dominant condition with variable expression. It is a subset of auto-inflammatory diseases characterised by recurrent inflammatory crises and is associated with chronic recurrent urticaria, sensorineural deafness, periodic arthritis and secondary amyloidosis. The diagnosis of MWS is a clinical one with sufferers classically presenting in childhood with a moderate fever and non-pruiginous urticaria. We describe a case of a six-year-old girl who was successfully diagnosed and treated with Anakinra. Muckle and Wells originally described this syndrome in 1962; however, only recently was it discovered to be genetically linked to chromosome 1q44 and subsequently to missense mutations in the CIAS1/NALP3/PYPAF1 gene. Since then, treatment has evolved and it remains one of few treatable causes of congenital profound sensorineural hearing loss.
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Affiliation(s)
- B T Stew
- Department of ENT Surgery, Singleton Hospital, Swansea, UK.
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37
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Wieringa JW, de Vries JJC, Murk JL. [Congenital CMV infections]. Ned Tijdschr Geneeskd 2013; 157:A6250. [PMID: 24103134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Only 10-15% of neonates with congenital cytomegalovirus infection have symptoms at birth. The most common symptoms are intrauterine growth retardation, microcephaly, petechiae, jaundice, hepatosplenomegaly, intracranial abnormalities, ophthalmological abnormalities and hearing loss. Symptomatic and asymptomatic CMV infections can both have long-term effects. CMV infection during pregnancy is diagnosed using a blood test and possible testing of the amniotic fluid for viral DNA. Infection of the fetus may be prevented by treating the mother with CMV hyperimmune globulin. In the neonate a diagnosis can be made by viral culture or PCR in urine. PCR in saliva could be an alternative. Blood testing is of limited value. If symptoms of CMV infection occur in the neonate, such as petechiae, microcephaly, central nervous system abnormalities, sensorineural hearing loss or chorioretinitis, antiviral treatment should be considered. Long-term follow-up is advisable because of the possibility of delayed-onset hearing loss and chorioretinitis.
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Abstract
CONCLUSION Even if hearing loss is mild to moderate, the presence of cochlear nerve (CN) hypoplasia associated with retrocochlear disorders should be considered. OBJECTIVES CN hypoplasia is a term that refers to an absent cochlear nerve on high-resolution magnetic resonance imaging (MRI). Most cases of CN hypoplasia are associated with profound hearing loss. The present study reports six pediatric cases of unilateral CN hypoplasia with mild to moderate hearing loss. METHODS Between May 2008 and April 2011, pure-tone hearing tests were performed in 17 patients who were diagnosed with CN hypoplasia on high resolution for evaluation of unilateral sensorineural hearing loss at the National Center for Child Health and Development. Of these, six patients had average hearing levels in the affected ears of < 60 dB and were therefore included in this study. RESULTS All six ears with CN hypoplasia were associated with CN canal stenosis. DPOAEs were present in one (17%) of the six affected ears. The ABR thresholds of the ears with CN hypoplasia were significantly elevated compared with 1-4 kHz pure-tone hearing levels in one of three cases. In two of five cases, the maximum word recognition scores of the affected ears were poor compared with pure-tone hearing levels.
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Affiliation(s)
- Hidenobu Taiji
- Department of Otorhinolaryngology, National Center for Child Health and Development, National Institute of Sensory Organs, National Tokyo Medical Center, Tokyo, Japan.
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Yuan YY, Song YS, Chai CM, Shen WD, Han WJ, Liu J, Wang GJ, Dong TX, Han DY, Dai P. Intraoperative CT-guided cochlear implantation in congenital ear deformity. Acta Otolaryngol 2012; 132:951-8. [PMID: 22668345 DOI: 10.3109/00016489.2012.674214] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSIONS Intraoperative computed tomography (iCT)-guided cochlear implantation is practical and effective for correct electrode placement in the cochlea of patients with congenital inner ear and/or complex middle ear malformation. OBJECTIVES The operation in patients with inner ear and/or complex middle ear malformation including abnormal facial nerve course is difficult. This study evaluated the efficacy of cochlear implantation under the guidance of iCT to insure correct electrode placement. METHODS This was a prospective interventional case series. Ten patients with severe to profound sensorineural hearing loss due to ear malformations were enrolled, and iCT was used to confirm the right placement of electrodes. RESULTS Intraoperative CT was performed three times in one patient, twice in two, and once in the others. Interruption of the surgical process for each iCT until resumption of surgery was 9.64 ± 0.63 min. iCT revealed incorrectly positioned cochlear implants in two patients, which were immediately corrected. There were no reoperations due to misplacement of electrodes. iCT helped locate the cochlea in the middle ear of one patient with an abnormal facial nerve course. The overall intervention rate based on iCT findings was 30%. LEVEL OF EVIDENCE level 4.
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MESH Headings
- Adult
- Child
- Child, Preschool
- China
- Cochlear Implantation/methods
- Deafness/congenital
- Deafness/diagnostic imaging
- Deafness/physiopathology
- Deafness/surgery
- Ear, Inner/abnormalities
- Ear, Inner/diagnostic imaging
- Ear, Inner/physiopathology
- Ear, Inner/surgery
- Ear, Middle/abnormalities
- Ear, Middle/diagnostic imaging
- Ear, Middle/physiopathology
- Ear, Middle/surgery
- Electrodes, Implanted
- Facial Nerve/abnormalities
- Facial Nerve/physiopathology
- Facial Nerve/surgery
- Female
- Hearing Loss, Sensorineural/congenital
- Hearing Loss, Sensorineural/diagnostic imaging
- Hearing Loss, Sensorineural/physiopathology
- Hearing Loss, Sensorineural/surgery
- Humans
- Infant
- Male
- Postoperative Complications/diagnostic imaging
- Postoperative Complications/physiopathology
- Surgery, Computer-Assisted/methods
- Telemetry
- Tomography, X-Ray Computed/methods
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Affiliation(s)
- Yong-Yi Yuan
- Department of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Beijing, China
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40
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Géléoc GSG. [TMC1 and TMC2: key partners in hearing and vestibular function]. Med Sci (Paris) 2012; 28:701-3. [PMID: 22920869 DOI: 10.1051/medsci/2012288009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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41
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Abstract
CMV is the most common congenital infection in newborns worldwide. Congenital CMV causes sensorineural hearing loss in a significant proportion of infected newborns, while the majority of newborns are asymptomatic. In the last three years there have been significant advances in the diagnosis and treatment of congenital CMV. We have developed practical evidence based guidelines for the management of congenital CMV.
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Affiliation(s)
- S Kadambari
- Paediatric Infectious Diseases Unit, St George's University of London, Cranmer Terrace, London, United Kingdom.
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Berninger E, Westling B. Outcome of a universal newborn hearing-screening programme based on multiple transient-evoked otoacoustic emissions and clinical brainstem response audiometry. Acta Otolaryngol 2011; 131:728-39. [PMID: 21466262 DOI: 10.3109/00016489.2011.554440] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSION This universal newborn hearing-screening (UNHS) programme revealed high efficacy. The proportion of congenital sensorineural hearing loss was higher in left ears and in males than in right ears and females, which was in line with the systematic ear asymmetries and sex differences in transient-evoked otoacoustic emission (TEOAE) pass percentage. OBJECTIVES To study the long-term outcome of a UNHS programme based on multiple TEOAEs and clinical click-evoked auditory brainstem response (ABR). METHOD The study included all the newborns that were screened during a 6-year period (n = 31 092). TEOAE pass/fail was analysed in detail. In an assessment performed 10 years after the start of the 6-year UNHS, prevalence, degree and type of congenital hearing loss were studied. RESULTS The proportion of screened newborns was high, i.e. 98%. Multiple TEOAE recordings minimized the need for clinical ABR. Fifty-seven (0.18%) subjects showed bilateral hearing loss (exceeding ≈ 30 dB HL); median ABR threshold = 60 dB nHL (at 2.5 months of age). Bilateral and unilateral sensorineural hearing loss was found in 0.17% (n = 52; 56% males) and 0.06% (n = 18; 61% left ears, 56% males) of the screened newborns, respectively. Higher TEOAE pass percentages (p < 0.01) were demonstrated in right ears and in females than in left ears and males.
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Affiliation(s)
- Erik Berninger
- Department of Audiology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
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Jin Z, Cheng J, Lu Y, Li J, Sun Y, Yuan H, Han D. [Genetic and audiological characters of a Chinese family with non-syndromic hereditary hearing loss]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2011; 25:158-161. [PMID: 21563462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To investigate the phenotype and genetic characters of a Chinese family with an autosomal-dominant inherited high-frequency sensorineural hearing loss. METHOD A Chinese pedigree associated with an autosomal-dominant inherited high-frequency sensorineural hearing loss was investigated. After obtaining informed consent from all study participants medical and audiological examination to rule out any syndromic hearing impairment. Application of microsatellite markers on DFNA 21 loci preliminary screening of 23 genes, data were analyzed by linkage analysis. RESULT Proband of the family had been diagnosed with high-frequency sensorineural hearing loss. A Chinese family SX-H043 with non-syndromic hearing loss were ascertained. This Chinese family with late onset hearing impairment spanned four generations and comprised 43 members. The mode of inheritance of the families should be autosomal dominant according to the pedigree. Hearing impairment of affected members in family SX-H043 occurred 25 to 50 years descending audiograms. Whole frequencies became involved with increasing age. CONCLUSION A Chinese family with late-onset high-frequency sensorineural hearing loss were clinically studied. Positive sites were not found in the known deafness loci screening. The information should facilitate future gene scan and linkage analyses for novel relative genes contributing to high-frequency sensorineural hearing loss.
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Affiliation(s)
- Zhanguo Jin
- Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, 100853, China
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Lalaiants MR, Bliznets EA, Markova TG, Poliakov AV, Tavartkiladze GA. [The results of audiological examination of children presenting with sensorineural loss of hearing due to GJB2 gene mutations during the first year of life]. Vestn Otorinolaringol 2011:31-35. [PMID: 21720291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
One of the topical problems of modern pediatric audiology is early diagnostics of congenital sensorineural loss of hearing in children and their timely rehabilitation. The objective of the present study was to obtain audiological characteristics of sensorineural hearing impairment associated with GJB2 gene mutations in children during the first year of life. The methods used were registration of short-latency auditory evoked potentials (slAEP) and the otoacoustic emission (OAE) techniques. The study included 66 children at the age of several months presenting with bilateral sensorineural loss of hearing who were available for the examination by an otorhinolaryngologist, tympanometry, slAEP recording, delayed EOAE (dEOAE) and distortion-product frequency OAE (dpOAE) techniques, and genetic counseling. The examination was carried out in duplicate, with an interval of 3 months. The genotype containing GJB2 gene mutations was identified in 47 (71.2%) children. The 35delG mutation was found in 41; in 31 of them it occurred in the homozygous state and in 10 in the heterozygous state. In the latter group, 8 children had the 35delG mutation in the compound heterozygous state together with one more mutation. Six children turned out to carry a pathological genotype with other GJB2 gene mutations. It was shown that OAE fails to be recorded in most patients with hearing impairment due to GJB2 gene mutations during the first months of life. The authors conclude that these mutations usually lead to the development of persistent bilateral symmetric sensorineural loss of hearing.
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Purcell DD, Fischbein N, Lalwani AK. Identification of previously “undetectable” abnormalities of the bony labyrinth with computed tomography measurement. Laryngoscope 2010; 113:1908-11. [PMID: 14603045 DOI: 10.1097/00005537-200311000-00009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND In patients with congenital sensorineural hearing loss (SNHL), a computed tomography (CT) scan of the temporal bone identifies inner ear malformations in approximately 25%, whereas the inner ear is grossly normal to visual inspection in the remaining 75% of the patients. In the latter group, the hearing loss is often attributed to radiologically undetectable abnormalities of the membranous labyrinth. However, subtle bony malformations may be missed because visual inspection alone is insensitive for detection. OBJECTIVE To test the hypothesis that there are subtle bony abnormalities of the inner ear in patients with SNHL who are radiologically deemed to have normal otic bone, using standardized measurements of the inner ear. STUDY DESIGN Retrospective review. METHODS Measurements of the cochlea, vestibule, and semicircular canals (SCCs) were made on axial and coronal temporal bone CT scans on 15 patients with normal hearing and 15 patients with congenital SNHL and grossly normal temporal bone CT scans. Student's t-test was performed to compare the measurements of the two groups. RESULTS All studies from the SNHL group were deemed normal by visual inspection and standardized measurements (+/-2 SD from normal). Surprisingly, there were significant differences in the measurements of the cochlea and of the SCCs between patients with and without SHNL (P <.05). CONCLUSIONS As a group, patients with SNHL and a "normal CT scan" have significant differences in the dimensions of the inner ear. This suggests that these patients have disturbed morphogenesis of both membranous and bony labyrinth. This novel observation has important implications for understanding the etiology of SNHL.
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Affiliation(s)
- Derk D Purcell
- Department of Otolaryngology-Head and Neck Surgery, University of California San Francisco, USA
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Nahili H, Charif M, Boulouiz R, Bounaceur S, Benrahma H, Abidi O, Chafik A, Rouba H, Kandil M, Barakat A. Prevalence of the mitochondrial A 1555G mutation in Moroccan patients with non-syndromic hearing loss. Int J Pediatr Otorhinolaryngol 2010; 74:1071-4. [PMID: 20637512 DOI: 10.1016/j.ijporl.2010.06.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 06/08/2010] [Accepted: 06/12/2010] [Indexed: 11/16/2022]
Abstract
UNLABELLED Mutations in mitochondrial DNA (mtDNA), especially the A1555G transition in the 12S rRNA gene, are one of the causes of both aminoglycoside-induced and non-syndromic sensorineural hearing loss. OBJECTIVE The aim of this study was to determine the prevalence of the A1555G mitochondrial mutation in Moroccan patients. METHODS We performed molecular characterization by PCR-RFLP and direct sequencing of one hundred and sixty four patients (84 unrelated familial and 80 sporadic cases) with a congenital sensorineural non-syndromic hearing loss and one hundred normal hearing controls for the occurrence of the A1555G mutation. RESULTS Mutational analysis of the mtDNA showed the presence of the homoplasmic A1555G mutation in three families, leading to a frequency of 3.6% similar to that reported for European-populations. No A1555G mutation was detected in sporadic and controls cases. However, we detected in twenty normal hearing controls a novel polymorphism A1557C, which was not found in patient samples. We further evidenced the presence of the A1438G mitochondrial polymorphism in four patients with sensorineural hearing loss and in five controls. CONCLUSION Our results show that the occurrence of the A1555G mutation in hearing impaired patient's accounts for 3.6% in a Moroccan patients and those novel mtDNA polymorphisms might contribute to a novel sub-haplogroup specific of the Magrheb.
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Affiliation(s)
- Halima Nahili
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur, Place Louis Pasteur, 20360 Casablanca, Morocco.
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Jin Y, Munetaka U, Hayasi A, Takegoshi H, Nakajima Y, Kaga K. Vestibular myogenic potentials of athletes for the Deaf Olympic Games with congenital profound hearing loss. Acta Otolaryngol 2010; 130:935-41. [PMID: 20113194 DOI: 10.3109/00016480903536028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONCLUSIONS Our study revealed that VEMPs in responses to clicks and 500 Hz STB were abnormal in 25% of athletes with congenital profound sensorineural hearing loss for the Deaf Olympic Games. These results confirm that a part of deaf athletes with congenital vestibular failure is well compensated for higher level sport activities. OBJECTIVES The aim of this study was to investigate the appearance rate of VEMP, vestibular failure and its compensation in Japanese deaf athletes by the VEMP test, caloric test and balance test. METHODS Sixteen subjects among the Deaf Olympic Games athletes of Japan volunteered to participate in this study. All the subjects have congenital profound sensorineural hearing loss. RESULTS In the VEMP test, 24 ears (75%) showed normal click-evoked responses, 5 ears (16%) showed decreased click-evoked responses, 3 ears (9%) showed no click-evoked responses, 28 ears (87.5%) showed normal 500 Hz short tone burst (STB)-evoked responses and 4 ears (12.5%) showed decreased responses. In the ice-water caloric test, 11 subjects (69%) showed normal responses bilaterally, 3 subjects showed bilateral responses with asymmetrical responses and 2 subjects (12%) showed no response bilaterally. All the subjects showed normal balance test results.
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Affiliation(s)
- Yulian Jin
- National Institute of Sensory Organs, National Tokyo Medical Center, Tokyo, Japan
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Wan LC, Guo MH, Qian YH, Liu SX, Zhang HZ, Chen SJ, Chen H, Gong J. [Cochlear implant in patients with congenital malformation of the inner ear]. Nan Fang Yi Ke Da Xue Xue Bao 2009; 29:2118-2121. [PMID: 19861281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To summarize the clinical experience with multi-channel cochlear implantation in patients with inner ear malformations and evaluate and the outcomes of speech rehabilitation. METHODS A retrospective study was conducted in 295 patients receiving cochlear implantation from 1998 to 2007, including 25 patients with large vestibular aqueduct syndrome (LVAS), 9 with Modini malformation, and 5 with common cavity deformity. All the patients received the Nucleus24 cochlear implants. In LVAS cases, 4 had Nucleus 24R (ST) implants, 8 had Contuor implants, 10 had Contuor Advance, and the remaining cases used Nucleus24(M) straight-electrode implants. RESULTS Severe gusher appeared in 3 cases of LVAS, and perilymph fluctuation were seen in other 15 cases. Four patients with Mondini malformation and 2 with common cavity malformation also experienced severe gusher, but the electrodes were inserted smoothly in all the patients without postoperative facial paralysis or cerebrospinal fluid leakage. The hearing threshold in these patients was similar to that in patients with normal cochlear structure. After speech rehabilitation for over 6 months, the abilities of speech discrimination and spoken language improved in all the cases in comparison with the preoperative lingual functions. CONCLUSION Multi-channel cochlear implantation can be performed in patients with inner ear malformation, but should not be attempted in patients with poor cochlear and cochlear nerve development. A comprehensive pre-operative radiographic and audiological evaluation is essential.
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Affiliation(s)
- Liang-cai Wan
- Department of Otolaryngology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
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Alemanno MS, Cama E, Santarelli R, Carella M, Zelante L, Toffolatti L, Palladino T, Melchionda S, Arslan E. A novel missense mutation in the Connexin 26 gene associated with autosomal recessive nonsyndromic sensorineural hearing loss in a consanguineous Tunisian family. Int J Pediatr Otorhinolaryngol 2009; 73:127-31. [PMID: 18990456 DOI: 10.1016/j.ijporl.2008.09.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 09/08/2008] [Accepted: 09/09/2008] [Indexed: 11/18/2022]
Abstract
Nonsyndromic sensorineural hearing impairment is inherited in a predominantly autosomal recessive manner in up to 70% of cases. The gene more often involved is GJB2, encoding the gap junction protein Connexin 26. We report here a novel missense mutation in the GJB2 gene found in a Tunisian family. A homozygous change C/G at nucleotide 263 was detected in the 4-year-old girl of this family, affected by congenital moderate hearing loss. This transversion leads to the replacement of a highly conserved alanine with glycine at codon 88 (A88G). The consanguineous parents of the child are healthy carriers of the mutation.
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Affiliation(s)
- Maria Stella Alemanno
- Servizio di Genetica Medica, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
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Teriutin FM, Barashkov NA, Dzhemileva LU, Posukh OL, Fedotova EE, Gurinova EE, Fedorova SA, Tavartkiladze GA, Khusnutdinova EK. [Cochlear implantation in a child with congenital sensorineural deafness due to 35 DELG mutation in GJB2 (connexin 26) gene]. Vestn Otorinolaringol 2009:17-19. [PMID: 19491791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This paper reports the first case of cochlear implantation performed in this country in a child with congenital non-syndromic sensorineural loss of hearing having hereditary etiology and attributable to autosomal-recessive 35 delG mutation in locus DFNB1 (13q.11-q12) of GJB2 (connexin 26) gene.
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