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Faridi R, Stratton P, Salmeri N, Morell RJ, Khan AA, Usmani MA, Newman WG, Riazuddin S, Friedman TB. Homozygous novel truncating variant of CLPP associated with severe Perrault syndrome. Clin Genet 2024; 105:584-586. [PMID: 38454547 PMCID: PMC10990821 DOI: 10.1111/cge.14514] [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: 12/29/2023] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 03/09/2024]
Abstract
A female proband and her affected niece are homozygous for a novel frameshift variant of CLPP. The proband was diagnosed with severe Perrault syndrome encompassing hearing loss, primary ovarian insufficiency, abnormal brain white matter and developmental delay.
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Affiliation(s)
- Rabia Faridi
- Laboratory of Molecular Genetics, NIDCD, NIH, Bethesda, Maryland, USA
| | - Pamela Stratton
- Office of the Clinical Director, Intramural Research Program, NINDS, NIH, Bethesda, Maryland, USA
| | - Noemi Salmeri
- Rehabilitation Medicine Department, Clinical Center, NIH, Bethesda, Maryland, USA
| | - Robert J. Morell
- Genomics and Computational Biology Core, NIDCD, NIH, Bethesda, Maryland, USA
| | - Asma Ali Khan
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore Pakistan
| | - Muhammad A Usmani
- Allama Iqbal Medical Research Center, Jinnah Burn and Reconstructive Surgery Center, University of Health Sciences, Lahore, Pakistan
| | - William G. Newman
- Evolution Infection and Genomics, University of Manchester, Manchester, UK
| | - Sheikh Riazuddin
- Allama Iqbal Medical Research Center, Jinnah Burn and Reconstructive Surgery Center, University of Health Sciences, Lahore, Pakistan
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Monroy C, Yu C, Houston D. EXPRESS: Parent-child sensorimotor coordination in toddlers with and without hearing loss. Q J Exp Psychol (Hove) 2024:17470218241253277. [PMID: 38659184 DOI: 10.1177/17470218241253277] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Infants experience the world through their actions with objects and their interactions with other people, especially their parents. Prior research has shown that school-age children with hearing loss experience poorer quality interactions with typically hearing parents, yet little is known about parent-child interactions between toddlers with hearing loss and their parents early in life. In the current study, we used mobile eye-tracking to investigate parent-child interactions in toddlers with and without hearing loss (mean ages: 19.42 months, SD = 3.41 months). Parents and toddlers engaged in a goal-directed, interactive task that involved inserting coins into a slot and required joint coordination between the parent and the child. Overall, findings revealed that deaf toddlers demonstrate typical action skills in line with their hearing peers and engage in similar interactions with their parents during social interactions. Findings also revealed that deaf toddlers explored objects more and showed more temporal stability in their motor movements (i.e., less variation in their timing across trials) compared with hearing peers, suggesting further adaptability of the deaf group to their atypical sensory environment rather than poorer coordination. In contrast to previous research, findings suggest an intact ability of deaf toddlers to coordinate their actions with their parents and highlight the adaptability within dyads who have atypical sensory experiences.
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Affiliation(s)
| | - Chen Yu
- Department of Psychology, University of Texas at Austin
| | - Derek Houston
- Department of Speech, Language, and Hearing Sciences, University of Connecticut
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Abitbol M, Couronné A, Dufaure de Citres C, Gache V. A PAX3 insertion in the Celestial breed and certain feline breeding lines with dominant blue eyes. Anim Genet 2024. [PMID: 38644700 DOI: 10.1111/age.13433] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 03/15/2024] [Accepted: 04/09/2024] [Indexed: 04/23/2024]
Abstract
During the last 60 years many inherited traits in domestic outbred cats were selected and retained giving birth to new breeds characterised by singular coat or morphological phenotypes. Among them, minimal white spotting associated with blue eyes was selected by feline breeders to create the Altai, Topaz, and Celestial breeds. Various established breeds also introduced this trait in their lineages. The trait, that was confirmed as autosomal dominant by breeding data, was first described in domestic cats from Kazakhstan and Russia, in British shorthair and British longhair from Russia, and in Maine Coon cats from the Netherlands, suggesting different founding effects. Using a genome-wide association study we identified a single region on chromosome C1 that was associated with the minimal white spotting and blue eyes phenotype (also called DBE by breeders for dominant blue eyes) in the French Celestial breed. Within that region we identified Paired Box 3 (PAX3) as the strongest candidate gene, since PAX3 is a key regulator of MITF (Melanocyte-Inducing Transcription Factor) and PAX3 variants have been previously identified in various species showing white spotting with or without blue eyes including the mouse and the horse. Whole genome sequencing of a Celestial cat revealed an endogenous retrovirus LTR (long terminal repeat) insertion within PAX3 intron 4 known to contain regulatory sequences (conserved non-coding element [CNE]) involved in PAX3 expression. The insertion is in the vicinity of CNE2 and CNE3. All 52 Celestial and Celestial-mixed cats with a DBE phenotype presented the insertion, that was absent in their 22 non-DBE littermates and in 87 non-DBE cats from various breeds. The outbred Celestial founder was also heterozygous for the insertion. Additionally, the variant was found in nine DBE Maine Coon cats related to the Celestial founder and four DBE Siberian cats with an uncertain origin. Segregation of the variant in the Celestial breed is consistent with dominant inheritance and does not appear to be associated with deafness. We propose that this NC_018730.3:g.206974029_206974030insN[395] variant represents the DBECEL (Celestial Dominant Blue Eyes) allele in the domestic cat.
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Affiliation(s)
- Marie Abitbol
- Univ Lyon, VetAgro Sup, Marcy-l'Etoile, France
- Institut NeuroMyoGène INMG-PNMG, CNRS UMR5261, INSERM U1315, Faculté de Médecine, Rockefeller, Université Claude Bernard Lyon 1, Lyon, France
| | | | | | - Vincent Gache
- Institut NeuroMyoGène INMG-PNMG, CNRS UMR5261, INSERM U1315, Faculté de Médecine, Rockefeller, Université Claude Bernard Lyon 1, Lyon, France
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Donis KC, Kalil MAB, Poswar F, Kok F, Kohem CL, Poloni S, Borsatto T, Vairo FPE, Pinheiro FC, Schwartz IVD. An adult with cystathionine beta-synthase deficiency, camptodactyly-arthropathy-coxa vara-pericarditis syndrome, and deafness: A case report. Genet Mol Biol 2024; 47:e20220335. [PMID: 38593426 PMCID: PMC11003653 DOI: 10.1590/1678-4685-gmb-2022-0335] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/11/2023] [Indexed: 04/11/2024] Open
Abstract
Massive sequencing platforms allow the identification of complex clinical phenotypes involving more than one autosomal recessive disorder. In this study, we report on an adult patient, born to a related couple (third degree cousins), referred for genetic evaluation due to ectopia lentis, deafness and previous diagnosis of juvenile idiopathic arthritis. He was biochemically diagnosed as having Classic Homocystinuria (HCU); Sanger sequencing of the CBS gene showed the genotype NM_000071.2(CBS):c.[833T>C];[833T>C], compatible with the diagnosis of pyridoxine-responsive HCU. As he also had symptoms not usually associated with HCU, exome sequencing was performed. In addition to the variants found in the Sanger sequencing, the following variants were identified: NM_001256317.1(TMPRSS3):c.[413C>A];[413C>A]; and the NM_005807.6(PRG4):c.[3756dup]:[3756dup], confirming the diagnosis of autosomal recessive nonsyndromic deafness and Camptodactyly-Arthropathy-Coxa Vara-Pericarditis Syndrome (CACP), respectively. Genomic analysis allowed the refinement of the diagnosis of a complex case and improvement of the patient's treatment.
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Affiliation(s)
- Karina Carvalho Donis
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, Porto Alegre, RS, Brazil
| | | | - Fabiano Poswar
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, Porto Alegre, RS, Brazil
| | - Fernando Kok
- Universidade de São Paulo, Hospital das Clínicas, Departamento de Neurologia, Unidade de Neurogenética, São Paulo, SP, Brazil
- Mendelics Análise Genômica, São Paulo, SP, Brazil
| | - Charles Lubianca Kohem
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Serviço de Reumatologia, Porto Alegre, RS, Brazil
| | - Soraia Poloni
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Experimental, Laboratório BRAIN, Porto Alegre, RS, Brazil
| | - Taciane Borsatto
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Experimental, Laboratório BRAIN, Porto Alegre, RS, Brazil
| | - Filippo Pinto e Vairo
- Mayo Clinic, Center for Individualized Medicine, Rochester, MN, USA
- Mayo Clinic, Department of Clinical Genomics, Rochester, MN, USA
| | - Franciele Cabral Pinheiro
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
| | - Ida Vanessa Doederlein Schwartz
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Experimental, Laboratório BRAIN, Porto Alegre, RS, Brazil
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Yu X, Li S, Guo Q, Leng J, Ding Y. The Association Between Mitochondrial tRNA Glu Variants and Hearing Loss: A Case-Control Study. Pharmgenomics Pers Med 2024; 17:77-89. [PMID: 38562431 PMCID: PMC10984097 DOI: 10.2147/pgpm.s441281] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 03/16/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose This study aimed to examine the frequencies of mt-tRNAGlu variants in 180 pediatric patients with non-syndromic hearing loss (NSHL) and 100 controls. Methods Sanger sequencing was performed to screen for mt-tRNAGlu variants. These mitochondrial DNA (mtDNA) pathogenic mutations were further assessed using phylogenetic conservation and haplogroup analyses. We also traced the origins of the family history of probands carrying potential pathogenic mtDNA mutations. Mitochondrial functions including mtDNA content, ATP and reactive oxygen species (ROS) were examined in cells derived from patients carrying the mt-tRNAGlu A14692G and CO1/tRNASer(UCN) G7444A variants and controls. Results We identified four possible pathogenic variants: m.T14709C, m.A14683G, m.A14692G and m.A14693G, which were found in NSHL patients but not in controls. Genetic counseling suggested that one child with the m.A14692G variant had a family history of NSHL. Sequence analysis of mtDNA suggested the presence of the CO1/tRNASer(UCN) G7444A and mt-tRNAGlu A14692G variants. Molecular analysis suggested that, compared with the controls, patients with these variants exhibited much lower mtDNA copy numbers, ATP production, whereas ROS levels increased (p<0.05 for all), suggesting that the m.A14692G and m.G7444A variants led to mitochondrial dysfunction. Conclusion mt-tRNAGlu variants are important risk factors for NSHL.
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Affiliation(s)
- Xuejiao Yu
- Department of Clinical Laboratory, Quzhou People’s Hospital, the Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, Zhejiang Province, 324000, People’s Republic of China
| | - Sheng Li
- Department of Otolaryngology, Quzhou People’s Hospital, the Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, Zhejiang Province, 324000, People’s Republic of China
| | - Qinxian Guo
- Central Laboratory, Hangzhou First People’s Hospital, Hangzhou, Zhejiang Province, 310006, People’s Republic of China
| | - Jianhang Leng
- Central Laboratory, Hangzhou First People’s Hospital, Hangzhou, Zhejiang Province, 310006, People’s Republic of China
| | - Yu Ding
- Central Laboratory, Hangzhou First People’s Hospital, Hangzhou, Zhejiang Province, 310006, People’s Republic of China
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Chen X, Meng F, Chen C, Li S, Chou Z, Xu B, Mo JQ, Guo Y, Guan MX. Deafness-associated tRNA Phe mutation impaired mitochondrial and cellular integrity. J Biol Chem 2024; 300:107235. [PMID: 38552739 PMCID: PMC11046301 DOI: 10.1016/j.jbc.2024.107235] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/06/2024] [Accepted: 03/18/2024] [Indexed: 04/23/2024] Open
Abstract
Defects in mitochondrial RNA metabolism have been linked to sensorineural deafness that often occurs as a consequence of damaged or deficient inner ear hair cells. In this report, we investigated the molecular mechanism underlying a deafness-associated tRNAPhe 593T > C mutation that changed a highly conserved uracil to cytosine at position 17 of the DHU-loop. The m.593T > C mutation altered tRNAPhe structure and function, including increased melting temperature, resistance to S1 nuclease-mediated digestion, and conformational changes. The aberrant tRNA metabolism impaired mitochondrial translation, which was especially pronounced by decreases in levels of ND1, ND5, CYTB, CO1, and CO3 harboring higher numbers of phenylalanine. These alterations resulted in aberrant assembly, instability, and reduced activities of respiratory chain enzyme complexes I, III, IV, and intact supercomplexes overall. Furthermore, we found that the m.593T > C mutation caused markedly diminished membrane potential, and increased the production of reactive oxygen species in the mutant cell lines carrying the m.593T > C mutation. These mitochondrial dysfunctions led to the mitochondrial dynamic imbalance via increasing fission with abnormal mitochondrial morphology. Excessive fission impaired the process of autophagy including the initiation phase, formation, and maturation of the autophagosome. In particular, the m.593T > C mutation upregulated the PARKIN-dependent mitophagy pathway. These alterations promoted an intrinsic apoptotic process for the removal of damaged cells. Our findings provide critical insights into the pathophysiology of maternally inherited deafness arising from tRNA mutation-induced defects in mitochondrial and cellular integrity.
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Affiliation(s)
- Xiaowan Chen
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University First Hospital, Lanzhou, Gansu, China; Institute of Genetics, Zhejiang University International School of Medicine, Hangzhou, Zhejiang, China
| | - Feilong Meng
- Institute of Genetics, Zhejiang University International School of Medicine, Hangzhou, Zhejiang, China; Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chao Chen
- Institute of Genetics, Zhejiang University International School of Medicine, Hangzhou, Zhejiang, China; Center for Mitochondrial Biomedicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shujuan Li
- Department of Otolaryngology-Head and Neck Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Zhiqiang Chou
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University First Hospital, Lanzhou, Gansu, China
| | - Baicheng Xu
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Jun Q Mo
- Department of Pathology, Rady Children's Hospital, University of California School of Medicine, San Diego, California, USA
| | - Yufen Guo
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Min-Xin Guan
- Institute of Genetics, Zhejiang University International School of Medicine, Hangzhou, Zhejiang, China; Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Center for Mitochondrial Biomedicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Zhejiang Provincial Lab of Genetics and Genomics, Zhejiang University, Hangzhou, Zhejiang, China.
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Almalki F. Review and research gap identification in genetics causes of syndromic and nonsyndromic hearing loss in Saudi Arabia. Ann Hum Genet 2024. [PMID: 38517009 DOI: 10.1111/ahg.12559] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/13/2024] [Accepted: 03/04/2024] [Indexed: 03/23/2024]
Abstract
Congenital hearing loss is one of the most common sensory disabilities worldwide. The genetic causes of hearing loss account for 50% of hearing loss. Genetic causes of hearing loss can be classified as nonsyndromic hearing loss (NSHL) or syndromic hearing loss (SHL). NSHL is defined as a partial or complete hearing loss without additional phenotypes; however, SHL, known as hearing loss, is associated with other phenotypes. Both types follow a simple Mendelian inheritance fashion. Several studies have been conducted to uncover the genetic factors contributing to NSHL and SHL in Saudi patients. However, these studies have encountered certain limitations. This review assesses and discusses the genetic factors underpinning NSHL and SHL globally, with a specific emphasis on the Saudi Arabian context. It also explores the prevalence of the most observed genetic causes of NSHL and SHL in Saudi Arabia. It also sheds light on areas where further research is needed to fully understand the genetic foundations of hearing loss in the Saudi population. This review identifies several gaps in research in NSHL and SHL and provides insights into potential research to be conducted.
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Affiliation(s)
- Faisal Almalki
- Medical Laboratories Technology Department, College of Applied Medical Sciences, Taibah University, Al Madinah Al Munwarah, Saudi Arabia
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Stanger A, Buhmann G, Dörfelt S, Zablotski Y, Fischer A. Rapid hearing threshold assessment with modified auditory brainstem response protocols in dogs. Front Vet Sci 2024; 11:1358410. [PMID: 38511189 PMCID: PMC10951061 DOI: 10.3389/fvets.2024.1358410] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/26/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction Auditory brainstem response (ABR) is the gold standard for hearing testing in dogs. ABR is commonly used in puppies to diagnose congenital sensorineural deafness. Long test times limit the use for a more comprehensive hearing screening in veterinary practice. This study aimed to establish a super-fast hearing screening protocol in dogs. Methods Hearing thresholds were routinely measured with a mobile device designed for newborn hearing screening in 90 dogs. We introduced modifications of the ABR protocol, e. g., a binaural test mode, higher stimulus rates, a broadband chirp stimulus, and an algorithm for automatic peak V detection in a stepwise fashion. Hearing thresholds were then measured with fast protocols utilizing either 30 Hz click or 90 Hz broadband chirp stimuli with 80, 60, 40, 30, 20, 10, 0 and -10 dBnHL stimulation intensities. Interrater reliability, agreement between click and chirp hearing thresholds and correlations with clinical characteristics of the dogs were assessed. Results Using all innovations, the test time for hearing threshold assessment in both ears was reduced to 1.11 min (mean). The chirp stimulus accentuated both, peak V and the subsequent trough, which are essential features for judgement of the hearing threshold, but preceding peaks were less conspicuous. Interrater reliability and agreement between click and chirp hearing threshold was excellent. Dogs >10 years of age and dogs with abnormal hearing score or otitis score had significantly higher hearing thresholds than younger dogs (p ≤ 0.001) or dogs without abnormalities (p < 0.001). Conclusion The results demonstrate that modifications in ABR protocols speed-up test times significantly while the quality of the recordings for hearing threshold assessment is maintained. Modified ABR protocols enable super-fast hearing threshold assessment in veterinary practice.
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Affiliation(s)
| | | | | | | | - Andrea Fischer
- Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
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Cannova S, Meossi C, Grilli F, Milani D, Alberti F, Cesaretti C, Marchisio PG, Crosti F, Pezzani L. CATSHL syndrome, a new family and phenotypic expansion. Clin Genet 2024; 105:313-316. [PMID: 37990933 DOI: 10.1111/cge.14455] [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: 09/14/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/23/2023]
Abstract
We report the case of a 12-year-old girl and her father who both had marked postnatal tall stature, camptodactyly and clinodactyly, scoliosis and juvenile-onset hearing loss. The CATSHL (CAmptodactyly - Tall stature - Scoliosis - Hearing Loss syndrome) syndrome was suspected, and molecular analysis revealed a hitherto unreported, monoallelic variant c.1861C>T (p.Arg621Cys) in FGFR3. This variant affects the same residue, but is different than, the variant p.Arg621His reported in the two families with dominant CATSHL described so far. Interestingly, peg-shaped incisors were observed in the proband, a feature never reported in CATSHL but typical of another FGFR3-related condition, LADD (Lacrimo - Auricolo - Dento - Digital) syndrome. The FGFR3 p.Arg621Cys variant seems to be a newly identified cause of CATSHL syndrome with some phenotypic overlap with the LADD syndrome.
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Affiliation(s)
| | - Camilla Meossi
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Federico Grilli
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Donatella Milani
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
| | | | - Claudia Cesaretti
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Paola Giovanna Marchisio
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
- Dipartimento di Fisiopatologia Medico-Chirurgica e dei Trapianti, Università degli Studi di Milano, Milano, Italy
| | | | - Lidia Pezzani
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milano, Italy
- UO Pediatria, ASST Papa Giovanni XXIII, Bergamo, Italy
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Korleski MJ, Stefanac SJ, Inglehart MR. Dentists' considerations concerning treating patients from the Deaf and Hard of Hearing community: A national survey. J Dent Educ 2024; 88:278-288. [PMID: 37921409 DOI: 10.1002/jdd.13405] [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: 09/04/2023] [Revised: 10/10/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
OBJECTIVES Research shows that adults who were Deaf or Hard of Hearing (HoH) had poorer oral health than adults who did not belong to this community. The objectives were to assess dentists' education, knowledge, attitudes, and professional behavior related to treating patients from the Deaf or HoH community and the relationships between these constructs. METHODS A total of 207 members of the American Dental Association and the Michigan Dental Association responded to a mailed or web-based survey concerning their education, knowledge, attitudes, and professional behavior related to treating patients from the Deaf or HoH community. RESULTS On average, the respondents disagreed that they were well educated in classroom-based, clinical, or community-based dental school settings (five-point answer scale with 1 = disagree strongly; mean = 2.29/2.27/2.35) or by their professional organization (mean = 2.00) about treating Deaf or HoH patients. However, the more recently the respondents had graduated from dental school, the better they described their education about this topic (r = 0.29; p < 0.001). Additionally, 45.9% agreed/strongly agreed that they would like to attend a continuing education course about this topic; 68.9% agreed/agreed strongly that negative consequences for patients' general health can occur; and 61.1% that patients cannot be well educated about oral hygiene if Deaf or HoH patients do not have appropriate interpretive support in dental offices. The better dentists were educated about this topic, the more knowledge they had (r = 0.50; p < 0.001). On average, the respondents agreed more strongly that they were comfortable treating adult patients who communicated orally than patients using American Sign Language (4.02 vs. 3.25; p < 0.001). CONCLUSIONS These findings show that efforts are needed to improve dental school and continuing education curricula about dental treatment for Deaf and HoH patients. The more recently the respondents had graduated, the more positively they described their education. Increased dental school and continuing education efforts are still urgently needed.
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Affiliation(s)
- Michael J Korleski
- General Practice Residency Program, University of California, San Francisco, California, USA
| | - Stephen J Stefanac
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Marita R Inglehart
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
- Department of Psychology, College of Literature, Science & Arts, University of Michigan, Ann Arbor, Michigan, USA
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Cychosz M, Edwards JR, Munson B, Romeo R, Kosie J, Newman RS. The everyday speech environments of preschoolers with and without cochlear implants. J Child Lang 2024:1-22. [PMID: 38362892 DOI: 10.1017/s0305000924000023] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Children who receive cochlear implants develop spoken language on a protracted timescale. The home environment facilitates speech-language development, yet it is relatively unknown how the environment differs between children with cochlear implants and typical hearing. We matched eighteen preschoolers with implants (31-65 months) to two groups of children with typical hearing: by chronological age and hearing age. Each child completed a long-form, naturalistic audio recording of their home environment (appx. 16 hours/child; >730 hours of observation) to measure adult speech input, child vocal productivity, and caregiver-child interaction. Results showed that children with cochlear implants and typical hearing were exposed to and engaged in similar amounts of spoken language with caregivers. However, the home environment did not reflect developmental stages as closely for children with implants, or predict their speech outcomes as strongly. Home-based speech-language interventions should focus on the unique input-outcome relationships for this group of children with hearing loss.
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Delcenserie A, Genesee F, Champoux F. Exposure to sign language prior and after cochlear implantation increases language and cognitive skills in deaf children. Dev Sci 2024:e13481. [PMID: 38327110 DOI: 10.1111/desc.13481] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 11/06/2023] [Accepted: 11/18/2023] [Indexed: 02/09/2024]
Abstract
Recent evidence suggests that deaf children with CIs exposed to nonnative sign language from hearing parents can attain age-appropriate vocabularies in both sign and spoken language. It remains to be explored whether deaf children with CIs who are exposed to early nonnative sign language, but only up to implantation, also benefit from this input and whether these benefits also extend to memory abilities, which are strongly linked to language development. The present study examined the impact of deaf children's early short-term exposure to nonnative sign input on their spoken language and their phonological memory abilities. Deaf children who had been exposed to nonnative sign input before and after cochlear implantation were compared to deaf children who never had any exposure to sign input as well as to children with typical hearing. The children were between 5;1 and 7;1 years of age at the time of testing and were matched on age, sex, and socioeconomic status. The results suggest that even short-term exposure to nonnative sign input has positive effects on general language and phonological memory abilities as well as on nonverbal working memory-with total length of exposure to sign input being the best predictor of deaf children's performance on these measures. The present data suggest that even access to early short-term nonnative visual language input is beneficial for the language and phonological memory abilities of deaf children with cochlear implants, suggesting also that parents should not be discouraged from learning and exposing their child to sign language. RESEARCH HIGHLIGHTS: This is the first study to examine the effects of early short-term exposure to nonnative sign input on French-speaking children with cochlear implants' spoken language and memory abilities. Early short-term nonnative exposure to sign input can have positive consequences for the language and phonological memory abilities of deaf children with CIs. Extended exposure to sign input has some additional and important benefits, allowing children to perform on par with children with typical hearing.
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Affiliation(s)
- A Delcenserie
- Université de Montréal, Québec, Canada
- School of Speech-Language Pathology and Audiology, Universite de Montreal, Quebec, Canada
| | | | - F Champoux
- School of Speech-Language Pathology and Audiology, Universite de Montreal, Quebec, Canada
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13
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Iwasaki A, Kobayashi M, Hirata S, Takabatake K, Ujihara M, Fujimaki T. A Case of Unilateral Facial Spasm With Vulnerable Hearing Function Due to a History of Cisplatin Treatment, Resulting in Intraoperative Hearing Loss. Cureus 2024; 16:e53695. [PMID: 38455770 PMCID: PMC10918615 DOI: 10.7759/cureus.53695] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2024] [Indexed: 03/09/2024] Open
Abstract
A 51-year-old man with a history of cisplatin treatment for a right testicular tumor underwent microvascular decompression for hemifacial spasm. At an early stage in the surgical procedure, the intraoperative auditory brainstem response (ABR) was diminished despite a relatively minimally invasive approach, resulting in irreversible hearing loss. Cisplatin is known to cause dose-dependent hearing impairment primarily affecting the cochlea, but it can also induce neurotoxicity. In the present case, prior cisplatin administration may have caused fragility of the cochlear nerve as well. Patients with a history of ototoxic and neurotoxic drugs such as cisplatin require more careful manipulation and thorough intraoperative auditory monitoring during neurosurgical procedures that may affect hearing, such as those for hemifacial spasms.
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Affiliation(s)
- Akina Iwasaki
- Neurosurgery, Saitama Medical University Hospital, Saitama, JPN
| | | | - Sachiko Hirata
- Neurosurgery, Saitama Medical University Hospital, Saitama, JPN
| | | | - Masaki Ujihara
- Neurosurgery, Saitama Medical University Hospital, Saitama, JPN
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14
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Martini A, Cozza A, Di Pasquale Fiasca VM. The Inheritance of Hearing Loss and Deafness: A Historical Perspective. Audiol Res 2024; 14:116-128. [PMID: 38391767 PMCID: PMC10886121 DOI: 10.3390/audiolres14010010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/12/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
If the term "genetics" is a relatively recent proposition, introduced in 1905 by English biologist William Bateson, who rediscovered and spread in the scientific community Mendel's principles of inheritance, since the dawn of human civilization the influence of heredity has been recognized, especially in agricultural crops and animal breeding. And, later, in familial dynasties. In this concise review, we outline the evolution of the idea of hereditary hearing loss, up to the current knowledge of molecular genetics and epigenetics.
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Affiliation(s)
- Alessandro Martini
- Padova University Research Center "International Auditory Processing Project in Venice (I-APPROVE)", Department of Neurosciences, University of Padua, 35128 Padua, Italy
| | - Andrea Cozza
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, 35128 Padua, Italy
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15
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Meristo M, Surian L, Strid K. False belief understanding in deaf children: what are the difficulties? Front Psychol 2024; 15:1238505. [PMID: 38304920 PMCID: PMC10832997 DOI: 10.3389/fpsyg.2024.1238505] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 01/05/2024] [Indexed: 02/03/2024] Open
Abstract
Children with cochlear implants (CIs) demonstrate proficiency in verbal-story elicited-response (VS-ER) false-belief tasks, such as the Sally & Ann task, at a similar age as typically developing hearing children. However, they face challenges in non-verbal spontaneous-response (NV-SR) false-belief tasks, measured via looking times, which hearing infants typically pass by around 2 years of age, or earlier. The purpose of the present study was to examine whether these difficulties remain in a non-verbal-story elicited-response (NVS-ER) false-belief task, in which children are offered the opportunity to provide an elicited response to a non-verbal-story task. A total of thirty 4- to 8-year-old children with CI-s and hearing children completed three different kinds of false-belief tasks. The results showed that children with CI-s performed above chance level on the verbal task (i.e., VS-ER task), but not on the two non-verbal tasks, (i.e., NVS-ER and NV-SR tasks). The control group of typically developing hearing children performed above chance on all three kinds of tasks (one-tailed significance level). Our findings highlight the importance of external narrative support for children with CIs in tasks that involve mental perspective-taking, and specifically predicting actions based on false beliefs.
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Affiliation(s)
- Marek Meristo
- Department of Psychology, University of Gothenburg, Gothenburg, Sweden
| | - Luca Surian
- Department of Psychology and Cognitive Science, University of Trento, Trento, Italy
| | - Karin Strid
- Department of Psychology, University of Gothenburg, Gothenburg, Sweden
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Di Stadio A, De Luca P, Ippolito V, Vedova P, Garofalo S, Turchetta R, Ferlito S, della Volpe A. Comparative Analysis of Intellectual Quotient in Developmental Population with Severe Hearing Loss: Hearing Aids vs. Cochlear Implant Users. Life (Basel) 2023; 14:12. [PMID: 38276261 PMCID: PMC10820146 DOI: 10.3390/life14010012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/09/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
The development of language, memory and intellectual functions is linked to normal hearing and correct sounds interpretation. Hearing loss (HL), especially in its severe form, negatively affects the development of these functions. This prospective study aimed at comparing the Intelligent Quotients (IQ) of children with cochlear implants (CI) with the ones of people wearing hearing aids (HA) after one year of hearing rehabilitation. 21 subjects with severe/profound bilateral hearing loss (deafness) were included in this study. Eleven children with congenital profound HL underwent CI and ten children with moderate to severe HL (congenital and acquired) were rehabilitated by HA. Children's IQs were assessed at enrolment (T0) and 12 months after hearing aids/CI use plus speech therapy. Statistical analyses were performed to analyze the data within and between groups. Comparison of IQs showed no statistically significant differences between CI and HA none at T0 and T1. The subtests showed lower scores in verbal comprehension and process speed index in patients treated with HA when compared to CI. This study showed that auditory rehabilitation can support the normal development of cognitive function in children between six and eight years of age. The use of the correct hearing aids based on the patient's hearing thresholds is important to maximize the rehabilitation outcomes. Due to the small sample size, although stratified for age, our results must be considered preliminary and further analyses on larger samples are needed to confirm our data.
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Affiliation(s)
- Arianna Di Stadio
- GF Ingrassia Department, University of Catania, 95121 Catania, Italy;
| | - Pietro De Luca
- Otolaryngology Department, Isola Tiberina—Gemelli Isola Hospital, 00186 Rome, Italy; (P.D.L.); (A.d.V.)
| | - Valentina Ippolito
- ENT Department, Pediatric CI Regional Referral Centre, Santobono-Pausilipon Children’s Hospital of Naples, 80129 Naples, Italy; (V.I.); (S.G.)
| | - Paola Vedova
- Neuropsychiatric Department, Santobono-Pausillipon Hospital, 80129 Naples, Italy;
| | - Sabina Garofalo
- ENT Department, Pediatric CI Regional Referral Centre, Santobono-Pausilipon Children’s Hospital of Naples, 80129 Naples, Italy; (V.I.); (S.G.)
| | - Rosaria Turchetta
- Pediatric Audiology Unit, Organ of Sense Department, University La Sapienza of Rome, 00185 Rome, Italy;
| | - Salvatore Ferlito
- GF Ingrassia Department, University of Catania, 95121 Catania, Italy;
| | - Antonio della Volpe
- Otolaryngology Department, Isola Tiberina—Gemelli Isola Hospital, 00186 Rome, Italy; (P.D.L.); (A.d.V.)
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Redfield SE, De-la-Torre P, Zamani M, Wang H, Khan H, Morris T, Shariati G, Karimi M, Kenna MA, Seo GH, Xu H, Lu W, Naz S, Galehdari H, Indzhykulian AA, Shearer AE, Vona B. PKHD1L1, A Gene Involved in the Stereocilia Coat, Causes Autosomal Recessive Nonsyndromic Hearing Loss. medRxiv 2023:2023.10.08.23296081. [PMID: 37873491 PMCID: PMC10593026 DOI: 10.1101/2023.10.08.23296081] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Identification of genes associated with nonsyndromic hearing loss is a crucial endeavor given the substantial number of individuals who remain without a diagnosis after even the most advanced genetic testing. PKHD1L1 was established as necessary for the formation of the cochlear hair-cell stereociliary coat and causes hearing loss in mice and zebrafish when mutated. We sought to determine if biallelic variants in PKHD1L1 also cause hearing loss in humans. Exome sequencing was performed on DNA of four families segregating autosomal recessive nonsyndromic sensorineural hearing loss. Compound heterozygous p.[(Gly129Ser)];p.[(Gly1314Val)] and p.[(Gly605Arg)];p[(Leu2818TyrfsTer5)], homozygous missense p.(His2479Gln) and nonsense p.(Arg3381Ter) variants were identified in PKHD1L1 that were predicted to be damaging using in silico pathogenicity prediction methods. In vitro functional analysis of two missense variants was performed using purified recombinant PKHD1L1 protein fragments. We then evaluated protein thermodynamic stability with and without the missense variants found in one of the families and performed a minigene splicing assay for another variant. In silico molecular modelling using AlphaFold2 and protein sequence alignment analysis were carried out to further explore potential variant effects on structure. In vitro functional assessment indicated that both engineered PKHD1L1 p.(Gly129Ser) and p.(Gly1314Val) mutant constructs significantly reduced the folding and structural stabilities of the expressed protein fragments, providing further evidence to support pathogenicity of these variants. Minigene assay of the c.1813G>A p.(Gly605Arg) variant, located at the boundary of exon 17, revealed exon skipping leading to an in-frame deletion of 48 amino acids. In silico molecular modelling exposed key structural features that might suggest PKHD1L1 protein destabilization. Multiple lines of evidence collectively associate PKHD1L1 with nonsyndromic mild-moderate to severe sensorineural hearing loss. PKHD1L1 testing in individuals with mild-moderate hearing loss may identify further affected families.
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Affiliation(s)
- Shelby E. Redfield
- Department of Otolaryngology and Communication Enhancement, Boston Children’s Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA 02115, USA
| | - Pedro De-la-Torre
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, Massachusetts, USA
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA
| | - Mina Zamani
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, Kianpars, Ahvaz, Iran
| | - Hanjun Wang
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052, China
| | - Hina Khan
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan
| | - Tyler Morris
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, Massachusetts, USA
| | - Gholamreza Shariati
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, Kianpars, Ahvaz, Iran
- Department of Medical Genetics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Karimi
- Khuzestan Cochlear Implantation Center (Tabassom), Ahvaz, Iran
| | - Margaret A. Kenna
- Department of Otolaryngology and Communication Enhancement, Boston Children’s Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA 02115, USA
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, Massachusetts, USA
| | | | - Hongen Xu
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052, China
| | - Wei Lu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-she Road, Zhengzhou, 450052, China
| | - Sadaf Naz
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan
| | - Hamid Galehdari
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Artur A. Indzhykulian
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, Massachusetts, USA
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA
| | - A. Eliot Shearer
- Department of Otolaryngology and Communication Enhancement, Boston Children’s Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA 02115, USA
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA
| | - Barbara Vona
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, 37075 Göttingen, Germany
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Chen H, Fang Q, Benseler F, Brose N, Moser T. Probing the role of the C 2F domain of otoferlin. Front Mol Neurosci 2023; 16:1299509. [PMID: 38152587 PMCID: PMC10751786 DOI: 10.3389/fnmol.2023.1299509] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/07/2023] [Indexed: 12/29/2023] Open
Abstract
Afferent synapses of cochlear inner hair cells (IHCs) employ a unique molecular machinery. Otoferlin is a key player in this machinery, and its genetic defects cause human auditory synaptopathy. We employed site-directed mutagenesis in mice to investigate the role of Ca2+ binding to the C2F domain of otoferlin. Substituting two aspartate residues of the C2F top loops, which are thought to coordinate Ca2+-ions, by alanines (OtofD1841/1842A) abolished Ca2+-influx-triggered IHC exocytosis and synchronous signaling in the auditory pathway despite substantial expression (~60%) of the mutant otoferlin in the basolateral IHC pole. Ca2+ influx of IHCs and their resting membrane capacitance, reflecting IHC size, as well as the number of IHC synapses were maintained. The mutant otoferlin showed a strong apex-to-base abundance gradient in IHCs, suggesting impaired protein targeting. Our results indicate a role of the C2F domain in otoferlin targeting and of Ca2+ binding by the C2F domain for IHC exocytosis and hearing.
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Affiliation(s)
- Han Chen
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
- Collaborative Research Center 889, University of Göttingen, Göttingen, Germany
- Auditory Neuroscience and Synaptic Nanophysiology Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Göttingen Graduate Center for Neurosciences, Biophysics and Molecular Biosciences, University of Göttingen, Göttingen, Germany
| | - Qinghua Fang
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
- Collaborative Research Center 889, University of Göttingen, Göttingen, Germany
- Auditory Neuroscience and Synaptic Nanophysiology Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Fritz Benseler
- Department of Molecular Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Nils Brose
- Collaborative Research Center 889, University of Göttingen, Göttingen, Germany
- Department of Molecular Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Multiscale Bioimaging Cluster of Excellence (MBExC), University of Göttingen, Göttingen, Germany
| | - Tobias Moser
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
- Collaborative Research Center 889, University of Göttingen, Göttingen, Germany
- Auditory Neuroscience and Synaptic Nanophysiology Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Multiscale Bioimaging Cluster of Excellence (MBExC), University of Göttingen, Göttingen, Germany
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Li Y, Liang L, Bai J, Zheng L, Qin T. Case report: Prenatal diagnosis in the fetus of a couple with both thalassemia and deafness genes. Front Genet 2023; 14:1258293. [PMID: 38146341 PMCID: PMC10749304 DOI: 10.3389/fgene.2023.1258293] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/20/2023] [Indexed: 12/27/2023] Open
Abstract
Background: Prenatal diagnosis and genetic counseling play an important role in preventing and controlling birth defects. No reports were found of prenatal diagnosis of couples carrying both the thalassemia and deafness genes. In this study, we presented the prenatal screening and diagnosis of a couple with both thalassemia and deafness genes, contributing to better genetic counseling. Case Report: A couple visited our hospital for a routine prenatal examination. As required by the policy in our region, they underwent screening and genetic diagnosis for thalassemia. Meanwhile, they did not accept the recommendation to test for spinal muscular atrophy and deafness genes. The female was confirmed to be a Hb Quong Sze (Hb QS) carrier (αQSα/αα, βN/βN), and the male had Hb H disease combined with β-thalassemia (--SEA/αCSα, βCDs41-42 (-TTCT)/βN). A prenatal diagnosis of the fetus revealed a Hb CS heterozygote. Subsequent complementary testing showed that the male was a double heterozygote of the GJB2 gene c.299_300delAT combined with c.109G>A, and Sanger sequencing confirmed that the female was a carrier of c.508_511dup in the GJB2. Fortunately, the chorionic villi results indicated that the fetus was only a carrier of deafness. Conclusion: Since both partners carried thalassemia and deafness genes, the couple required prenatal diagnosis for the respective mutations. Expanded carrier screening (ECS) is a more advanced technology that can detect multiple disease genes simultaneously.
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Affiliation(s)
- Youqiong Li
- Center for Medical Genetics and Prenatal Diagnosis, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
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20
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Liew XW, Tang ZHM, Ong YQC, See KC. Hearing Loss after COVID-19 and Non-COVID-19 Vaccination: A Systematic Review. Vaccines (Basel) 2023; 11:1834. [PMID: 38140238 PMCID: PMC10748333 DOI: 10.3390/vaccines11121834] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: Vaccine safety is an important topic with public health implications on a global scale. The purpose of this study was to systematically review available literature assessing sensorineural hearing loss (SNHL) incidence and severity following both coronavirus disease 2019 (COVID-19) and non-COVID-19 vaccinations, as well as prognosis and outcomes. (2) Methods: This systematic review was performed according to the Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines. Relevant publications evaluating post-vaccination SNHL were selected from PubMed and Embase, searching from inception to July 2023. (3) Results: From 11 observational studies, the incidence of post-vaccination SNHL was low for both COVID-19 and non-COVID-19 vaccines, ranging from 0.6 to 60.77 per 100,000 person-years, comparable to all-cause SNHL. (4) Conclusions: The incidence rates of SNHL following COVID-19 and non-COVID-19 vaccinations remained reassuringly low. Most patients experienced improved hearing function in the weeks to months following vaccination. This study underscores the importance and safety of vaccinations and encourages ongoing surveillance and detailed reporting of hearing loss cases post-vaccination.
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Affiliation(s)
- Xin Wei Liew
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 169856, Singapore; (X.W.L.); (Z.H.M.T.); (Y.Q.C.O.)
| | - Zer Han Malcolm Tang
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 169856, Singapore; (X.W.L.); (Z.H.M.T.); (Y.Q.C.O.)
| | - Yan Qing Cherie Ong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 169856, Singapore; (X.W.L.); (Z.H.M.T.); (Y.Q.C.O.)
| | - Kay Choong See
- Division of Respiratory and Critical Care Medicine, Department of Medicine, National University Hospital, Singapore 119228, Singapore
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Hahn R, Avraham KB. Gene Therapy for Inherited Hearing Loss: Updates and Remaining Challenges. Audiol Res 2023; 13:952-966. [PMID: 38131808 PMCID: PMC10740825 DOI: 10.3390/audiolres13060083] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/13/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
Hearing loss stands as the most prevalent sensory deficit among humans, posing a significant global health challenge. Projections indicate that by 2050, approximately 10% of the world's population will grapple with disabling hearing impairment. While approximately half of congenital hearing loss cases have a genetic etiology, traditional interventions such as hearing aids and cochlear implants do not completely restore normal hearing. The absence of biological treatment has prompted significant efforts in recent years, with a strong focus on gene therapy to address hereditary hearing loss. Although several studies have exhibited promising recovery from common forms of genetic deafness in mouse models, existing challenges must be overcome to make gene therapy applicable in the near future. Herein, we summarize the primary gene therapy strategies employed over past years, provide an overview of the recent achievements in preclinical studies for genetic hearing loss, and outline the current key obstacles to cochlear gene therapy.
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Affiliation(s)
| | - Karen B. Avraham
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel;
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Meier RP, Rathmann C, Shield A. Editorial: Modality and language acquisition: how does the channel through which language is expressed affect how children and adults are able to learn? Front Psychol 2023; 14:1334171. [PMID: 38111863 PMCID: PMC10726121 DOI: 10.3389/fpsyg.2023.1334171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/13/2023] [Indexed: 12/20/2023] Open
Affiliation(s)
- Richard P. Meier
- Department of Linguistics, The University of Texas at Austin, Austin, TX, United States
| | - Christian Rathmann
- Department of Deaf Studies & Sign Language Interpreting, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Aaron Shield
- Department of Speech Pathology & Audiology, Miami University, Oxford, OH, United States
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23
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Herrera CG, Kessler TM, Pagliarin KC. Instrument to evaluate the perception of minimal contrasts in Chilean Sign Language - reliability evidence. Codas 2023; 35:e20220184. [PMID: 38055413 PMCID: PMC10750821 DOI: 10.1590/2317-1782/20232022184es] [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: 07/06/2022] [Accepted: 08/02/2023] [Indexed: 12/08/2023] Open
Abstract
PURPOSE Obtain evidence of the test reliability to evaluate the perception of minimum contrasts in Chilean Sign Language (LSCh). METHODS Ten deaf children and adolescents aged between 7 and 14 years participated in this study. They were evaluated with the test of perception of minimal contrasts in LSCh. The test was reapplied 11 and 14 days after the first application (test-retest reliability). Spearman's Rho correlation was performed. During the first application, authorization was requested from the parents of the children and adolescents to record the responses of the participants so that another evaluator could re-score the protocols, in order to obtain inter-rater reliability. First-order agreement coefficient (AC1) Gwet's was used for data analysis. RESULTS Test-retest obtained a strong and significant correlation (Rho= 0.741; p=0.014). The concordance values obtained inter-rater vary between 0.962 and 1 (p<0.001), indicating that the test presents almost perfect concordance. CONCLUSION The minimum pairs perception test in LSCh presents satisfactory test-retest and inter-rater reliability.
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Affiliation(s)
- Carlos González Herrera
- Departamento de Ciencias de la Fonoaudiología, Facultad de Ciencias de la Salud, Universidad de Talca – UTALCA - Talca (VII Región del Maule), Chile.
| | - Themis Maria Kessler
- Programa de Pós-graduação em Distúrbios da Comunicação Humana, Universidade Federal de Santa Maria – UFSM - Santa Maria (RS), Brasil.
| | - Karina Carlesso Pagliarin
- Programa de Pós-graduação em Distúrbios da Comunicação Humana, Universidade Federal de Santa Maria – UFSM - Santa Maria (RS), Brasil.
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Bellone RR, Tanaka J, Esdaile E, Sutton RB, Payette F, Leduc L, Till BJ, Abdel-Ghaffar AK, Hammond M, Magdesian KG. A de novo 2.3 kb structural variant in MITF explains a novel splashed white phenotype in a Thoroughbred family. Anim Genet 2023; 54:752-762. [PMID: 37697831 DOI: 10.1111/age.13352] [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: 07/12/2023] [Revised: 07/12/2023] [Accepted: 08/19/2023] [Indexed: 09/13/2023]
Abstract
Splashed white in horses is characterized by extensive white patterning on the legs, face and abdomen and may be accompanied by deafness. To date, seven variants in microphthalmia-associated transcription factor (MITF) and two variants in Paired Box 3 (PAX3) have been identified to explain this phenotype. A splashed white Thoroughbred stallion, whose sire and dam were not patterned, was hypothesized to have a de novo variant leading to his white coat pattern. A whole-genome sequencing candidate gene approach identified two single nucleotide variants (SNVs) in SOX10, four SNVs in MITF and a 2.3 kb deletion in MITF with the alternative allele present in this stallion but absent in the other 18 horses analyzed. All six SNVs were annotated as modifiers and were not further considered. The deletion in MITF (NC_009159.3:g.21555811_21558139delinsAAAT) encompasses exon 9 encoding a part of the helix-loop-helix domain required for DNA binding. Sanger sequencing and parentage testing confirmed that this deletion was a de novo mutation of maternal origin. Consistent with the published nomenclature, we denote this likely causal variant as SW8. Genotyping three of this stallion's offspring identified SW8 only in the nearly all-white foal that was confirmed deaf by brainstem auditory evoked response testing. This foal was also a compound heterozygote for dominant white variants (W20/W22), but to date, W variants alone have not been connected to deafness. SW8 marks the fourth de novo MITF variant in horses reported to cause white patterning. The link between deafness and all MITF variants with and without other variants impacting melanocyte development and function needs to be further explored.
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Affiliation(s)
- R R Bellone
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
- Department of Population Health and Reproduction, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - J Tanaka
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - E Esdaile
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - R B Sutton
- Cell Physiology and Molecular Biophysics, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - F Payette
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, University School of Veterinary Medicine, University of Pennsylvania, Kennett Square, Pennsylvania, USA
| | - L Leduc
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, University School of Veterinary Medicine, University of Pennsylvania, Kennett Square, Pennsylvania, USA
| | - B J Till
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - A K Abdel-Ghaffar
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - M Hammond
- Veterinary Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, California, USA
- Department of Population Health and Reproduction, School of Veterinary Medicine, UC Davis, Davis, California, USA
| | - K G Magdesian
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, California, USA
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25
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Terry J. Enablers and barriers for hearing parents with deaf children: Experiences of parents and workers in Wales, UK. Health Expect 2023; 26:2666-2683. [PMID: 37694502 PMCID: PMC10632626 DOI: 10.1111/hex.13864] [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: 06/28/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND More than 90% of deaf children are born to hearing families who know little about deafness. Benefits from hearing screening at birth are often lost, as families find little information about pathways for deaf children but are key to ensuring deaf children receive relevant language and communication support. Systems surrounding deaf children and family members are crucial for children's health and social development. Experiences of hearing parents raising deaf children and understanding factors that influence families' experience of navigating pathways for deaf children through health and education services are currently underreported. METHODS An exploratory study was conducted in Wales, UK. Twenty participants were interviewed, including 10 hearing parents of deaf children and 10 people who work with deaf children using semistructured interviews. Bronfenbrenner's ecological systems theory was used as a lens to explore the micro-, meso-, exo-, macro- and chronosystems that surround children and families. This study explores potential supports and barriers in those systems. FINDINGS Findings are reported under two broad headings: enablers and barriers. Under enablers, it was found that provision of resources, supporting people and knowledge were key factors. Under barriers, a lack of knowledge, lack of provision and battling services and attitudes were key issues that need addressing. CONCLUSION Hearing parents of deaf children in Wales, UK reported experiencing a range of enablers and barriers that impact upon their experiences of raising a deaf child. Further provision is needed by policymakers and governments to recognise support needs to improve the outcomes for deaf children. PATIENT OR PUBLIC CONTRIBUTION This project was developed from initial discussions with the stakeholder reference group and progressed with the group's deaf panel and hearing parents with deaf children. The project's steering group was involved in study design, recruitment and continuous feedback on all stages of the research process.
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Affiliation(s)
- Julia Terry
- Faculty of Medicine, Health and Life ScienceSwansea UniversitySwanseaWalesUK
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26
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Finsterer J. Novel genetic syndrome manifesting with cerebral atrophy, cataract, hypoacusis, diabetes, and brachy-/syndactyly. J Family Med Prim Care 2023; 12:3415-3417. [PMID: 38361886 PMCID: PMC10866254 DOI: 10.4103/jfmpc.jfmpc_642_23] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/21/2023] [Accepted: 08/30/2023] [Indexed: 02/17/2024] Open
Abstract
Genetic disorders manifest clinically in a variety of phenotypes. A patient with cataract, hypoacusis, hand and foot deformities, and diabetes was not reported. The patient is a 74-year-old male with a history of congenital foot and hand deformities manifesting as brachydactyly of fingers 4 and 5 on the right side and brachydactyly and syndactyly of the fingers 1-5 on the left side. Foot deformities required orthopedic surgery from an early age. He later developed cataract that required surgery, hypoacusis with tinnitus on the left side, and diabetes. Cerebral MRI revealed generalized atrophy. Since the family history was positive for deaf muteness in his father, a genetic defect was considered. In summary, a novel syndrome has been described that manifests itself in cerebral atrophy, cataract, hypoacusis, hand and foot deformities, and diabetes. Considering the father's deaf muteness, a genetic cause of the syndrome is likely.
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Affiliation(s)
- Josef Finsterer
- Department of Neurological, Neurology and Neurophysiology Center, Vienna, Austria
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27
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Awazu A, Takemoto D, Watanabe K, Sakamoto N. Possibilities of skin coat color-dependent risks and risk factors of squamous cell carcinoma and deafness of domestic cats inferred via RNA-seq data. Genes Cells 2023; 28:893-905. [PMID: 37864512 DOI: 10.1111/gtc.13076] [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: 07/18/2023] [Revised: 10/02/2023] [Accepted: 10/06/2023] [Indexed: 10/23/2023]
Abstract
The transcriptome data of skin cells from domestic cats with brown, orange, and white coats were analyzed using a public database to investigate the possible relationship between coat color-related gene expression and squamous cell carcinoma risk, as well as the mechanism of deafness in white cats. We found that the ratio of the expression level of genes suppressing squamous cell carcinoma to that of genes promoting squamous cell carcinoma might be considerably lower than the theoretical estimation in skin cells with orange and white coats in white-spotted cat. We also found the possibility of the frequent production of KIT lacking the first exon (d1KIT) in skin cells with white coats, and d1KIT production exhibited a substantial negative correlation with the expression of SOX10, which is essential for melanocyte formation and adjustment of hearing function. Additionally, the production of d1KIT was expected to be due to the insulating activity of the feline endogenous retrovirus 1 (FERV1) LTR in the first intron of KIT by its CTCF binding sequence repeat. These results contribute to basic veterinary research to understand the relationship between cat skin coat and disease risk, as well as the underlying mechanism.
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Affiliation(s)
- Akinori Awazu
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
- Research Center for the Mathematics on Chromatin Live Dynamics, Hiroshima University, Hiroshima, Japan
| | - Daigo Takemoto
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Kaichi Watanabe
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Naoaki Sakamoto
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
- Research Center for the Mathematics on Chromatin Live Dynamics, Hiroshima University, Hiroshima, Japan
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28
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Behtani L, Paromov D, Moïn-Darbari K, Houde MS, Bacon BA, Maheu M, Leroux T, Champoux F. Sensory Reweighting for Postural Control in Older Adults with Age-Related Hearing Loss. Brain Sci 2023; 13:1623. [PMID: 38137071 PMCID: PMC10741952 DOI: 10.3390/brainsci13121623] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/24/2023] Open
Abstract
There is growing evidence linking hearing impairments and the deterioration of postural stability in older adults. To our knowledge, however, no study to date has investigated the effect of age-related hearing loss on the sensory reweighting process during postural control. In the absence of data, much is unknown about the possible mechanisms, both deleterious and compensatory, that could underly the deterioration of postural control following hearing loss in the elderly. The aim of this study was to empirically examine sensory reweighting for postural control in older adults with age-related hearing loss as compared to older adults with normal hearing. The center of pressure of all participants was recorded using a force platform and the modified clinical test of sensory interaction and balance protocol. The results suggest that individuals with age-related hearing loss displayed increased somatosensory reliance relative to normal hearing younger adults. This increased reliance on somatosensory input does not appear to be effective in mitigating the loss of postural control, probably due to the concomitant deterioration of tactile and proprioceptive sensitivity and acuity associated with aging. Beyond helping to further define the role of auditory perception in postural control, these results further the understanding of sensory-related mechanisms associated with postural instability in older adults.
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Affiliation(s)
- Lydia Behtani
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
- Centre de Recherche de L’institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, QC H3W 1W4, Canada
| | - Daniel Paromov
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
- Centre de Recherche de L’institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, QC H3W 1W4, Canada
| | - Karina Moïn-Darbari
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
| | - Marie-Soleil Houde
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
| | - Benoit Antoine Bacon
- Department of Psychology, Faculty of Art and Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
| | - Maxime Maheu
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
- Institut Universitaire Sur la Réadaptation en Déficience Physique de Montréal (IURDPM), Pavillon Laurier, CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montréal, QC H2H 2N8, Canada
| | - Tony Leroux
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
| | - François Champoux
- School of Speech Language Pathology and Audiology, Faculty of Medecine, Université de Montréal, Montréal, QC H3T 1J4, Canada; (L.B.); (D.P.); (K.M.-D.); (M.-S.H.); (M.M.); (T.L.)
- Centre de Recherche de L’institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, QC H3W 1W4, Canada
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Abstract
Neurological insults, such as congenital blindness, deafness, amputation, and stroke, often result in surprising and impressive behavioural changes. Cortical reorganisation, which refers to preserved brain tissue taking on a new functional role, is often invoked to account for these behavioural changes. Here, we revisit many of the classical animal and patient cortical remapping studies that spawned this notion of reorganisation. We highlight empirical, methodological, and conceptual problems that call this notion into doubt. We argue that appeal to the idea of reorganisation is attributable in part to the way that cortical maps are empirically derived. Specifically, cortical maps are often defined based on oversimplified assumptions of 'winner-takes-all', which in turn leads to an erroneous interpretation of what it means when these maps appear to change. Conceptually, remapping is interpreted as a circuit receiving novel input and processing it in a way unrelated to its original function. This implies that neurons are either pluripotent enough to change what they are tuned to or that a circuit can change what it computes. Instead of reorganisation, we argue that remapping is more likely to occur due to potentiation of pre-existing architecture that already has the requisite representational and computational capacity pre-injury. This architecture can be facilitated via Hebbian and homeostatic plasticity mechanisms. Crucially, our revised framework proposes that opportunities for functional change are constrained throughout the lifespan by the underlying structural 'blueprint'. At no period, including early in development, does the cortex offer structural opportunities for functional pluripotency. We conclude that reorganisation as a distinct form of cortical plasticity, ubiquitously evoked with words such as 'take-over'' and 'rewiring', does not exist.
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Affiliation(s)
- Tamar R Makin
- MRC Cognition and Brain Sciences Unit, University of CambridgeCambridgeUnited Kingdom
| | - John W Krakauer
- Department of Neuroscience, Johns Hopkins University School of MedicineBaltimoreUnited States
- Department of Neurology, Johns Hopkins University School of MedicineBaltimoreUnited States
- The Santa Fe InstituteSanta FeUnited States
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30
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Fayand A, Cescato M, Le Corre L, Terré A, Wacheux M, Zhu YYJ, Melet A, Moreau TRJ, Bodaghi B, Bonnet F, Bronnimann D, Cuisset L, Faria R, Grateau G, Pillet P, Mulders-Manders CM, Neven B, Quartier P, Richer O, Savey L, Truchetet ME, Py BF, Boursier G, Herbeuval JP, Georgin-Lavialle S, Rodero MP. Pathogenic variants in the NLRP3 LRR domain at position 861 are responsible for a boost-dependent atypical CAPS phenotype. J Allergy Clin Immunol 2023; 152:1303-1311.e1. [PMID: 37506976 DOI: 10.1016/j.jaci.2023.07.006] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND Cryopyrin-associated periodic syndrome (CAPS) is associated with NLRP3 pathogenic variants, mostly located in the NACHT (neuronal apoptosis inhibitor protein, MHC class 2 transcription activator, incompatibility locus protein from Podospora anserina, telomerase-associated protein) domain. Cold-induced urticarial rash is among the main clinical features. However, this study identified a series of 14 patients with pathogenic variants of the Y861 residue (p.Tyr861) of the LRR domain of NLRP3 and minimal prevalence of cold-induced urticarial rash. OBJECTIVES This study aimed to address a possible genotype/phenotype correlation for patients with CAPS and to investigate at the cellular levels the impact of the Y861C substitution (p.Tyr861Cys) on NLRP3 activation. METHODS Clinical features of 14 patients with CAPS and heterozygous substitution at position 861 in the LRR domain of NLRP3 were compared to clinical features of 48 patients with CAPS and pathogenic variants outside the LRR domain of NLRP3. IL-1β secretion by PBMCs and purified monocytes from patients and healthy donors was evaluated following LPS and monosodium urate crystal stimulation. RESULTS Patients with substitution at position 861 of NLRP3 demonstrated a higher prevalence of sensorineural hearing loss while being less prone to skin urticarial. In contrast to patients with classical CAPS, cells from patients with a pathogenic variant at position 861 required an activation signal to secrete IL-1β but produced more IL-1β during the early and late phase of secretion than cells from healthy donors. CONCLUSIONS Pathogenic variants of Y861 of NLRP3 drive a boost-dependent oversecretion of IL-1β associated with an atypical CAPS phenotype.
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Affiliation(s)
- Antoine Fayand
- Department of Internal Medicine, National Reference Center for Autoinflammatory Diseases and Amyloid A Amyloidosis, Tenon Hospital, Sorbonne Université, Paris, France; Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Margaux Cescato
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Laurent Le Corre
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Alexandre Terré
- Department of Internal Medicine, National Reference Center for Autoinflammatory Diseases and Amyloid A Amyloidosis, Tenon Hospital, Sorbonne Université, Paris, France; Laboratoire Mécanismes Cellulaires et Moléculaires des Désordres Hématologiques et Implications Thérapeutiques, Institut Imagine, Institut National de la Santé et de la Recherche Médicale, Université Paris Cité, Paris, France
| | - Margaux Wacheux
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Yixiang Y J Zhu
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Armelle Melet
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Thomas R J Moreau
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France; Translational Immunology Unit, Institut Pasteur, Université Paris Cité, Paris, France
| | - Bahram Bodaghi
- Department of Ophthalmology, Instituts Hospitalo-Universitaires FOReSIGHT, Pitié-Salpêtrière Hospital, Assistance Publique-Hȏpitaux de Paris, Sorbonne Université, Paris, France
| | - Fabrice Bonnet
- Service de Médecine Interne et Maladies Infectieuses, Hôpital Saint-André, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Didier Bronnimann
- Service de Médecine Interne et Maladies Infectieuses, Hôpital Saint-André, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Laurence Cuisset
- Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
| | - Raquel Faria
- Unidade de Imunologia Clínica, Centro Hospitalar Universitário do Porto, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health, Porto, Portugal
| | - Gilles Grateau
- Department of Internal Medicine, National Reference Center for Autoinflammatory Diseases and Amyloid A Amyloidosis, Tenon Hospital, Sorbonne Université, Paris, France
| | - Pascal Pillet
- Service de Pédiatrie et Rhumatologie Pédiatrique, Hôpital Pellegrin-Enfants, Bordeaux, France
| | - Catharina M Mulders-Manders
- Department of Internal Medicine, Radboud Expertise Center for Immunodeficiency and Autoinflammation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Benedicte Neven
- Pediatric Immunology-Hematology and Rheumatology Unit, Necker Hospital, Université Paris Cité, Paris, France
| | - Pierre Quartier
- Pediatric Immunology-Hematology and Rheumatology Unit, Necker Hospital, Université Paris Cité, Paris, France; RAISE Reference Centre for Rare Diseases, Paris, France
| | - Olivier Richer
- Service de Pédiatrie et Rhumatologie Pédiatrique, Hôpital Pellegrin-Enfants, Bordeaux, France
| | - Léa Savey
- Department of Internal Medicine, National Reference Center for Autoinflammatory Diseases and Amyloid A Amyloidosis, Tenon Hospital, Sorbonne Université, Paris, France
| | - Marie-Elise Truchetet
- Department of Rheumatology, Hôpital Pellegrin, Bordeaux, France; Unite de Mixte Recherche 5164 ImmunoConcept, Bordeaux University Hospital, Bordeaux University, Bordeaux, France
| | - Bénédicte F Py
- Centre International de Recherche en Infectiologie, Université Lyon, Lyon, France; U1111, Institut National de la Santé et de la Recherche Médicale, Université Claude Bernard Lyon 1, Lyon, France; Unite de Mixte Recherche 5308, Centre National de la Recherche Scientifique, École Normale Supérieure de Lyon, Lyon, France
| | - Guilaine Boursier
- Laboratoire de Génétique des Maladies Rares et Autoinflammatoires, Service de Génétique Moléculaire et Cytogénomique, National Reference Center for Autoinflammatory Diseases and AA Amyloidosis, Centre Hospitalier Universitaire Montpellier, Université de Montpellier, Montpellier, France
| | - Jean-Philippe Herbeuval
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France
| | - Sophie Georgin-Lavialle
- Department of Internal Medicine, National Reference Center for Autoinflammatory Diseases and Amyloid A Amyloidosis, Tenon Hospital, Sorbonne Université, Paris, France.
| | - Mathieu P Rodero
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre National de la Recherche Scientifique, Université Paris Cité, Paris, France.
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Arioli M, Segatta C, Papagno C, Tettamanti M, Cattaneo Z. Social perception in deaf individuals: A meta-analysis of neuroimaging studies. Hum Brain Mapp 2023; 44:5402-5415. [PMID: 37609693 PMCID: PMC10543108 DOI: 10.1002/hbm.26444] [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: 03/07/2023] [Revised: 06/22/2023] [Accepted: 07/22/2023] [Indexed: 08/24/2023] Open
Abstract
Deaf individuals may report difficulties in social interactions. However, whether these difficulties depend on deafness affecting social brain circuits is controversial. Here, we report the first meta-analysis comparing brain activations of hearing and (prelingually) deaf individuals during social perception. Our findings showed that deafness does not impact on the functional mechanisms supporting social perception. Indeed, both deaf and hearing control participants recruited regions of the action observation network during performance of different social tasks employing visual stimuli, and including biological motion perception, face identification, action observation, viewing, identification and memory for signs and lip reading. Moreover, we found increased recruitment of the superior-middle temporal cortex in deaf individuals compared with hearing participants, suggesting a preserved and augmented function during social communication based on signs and lip movements. Overall, our meta-analysis suggests that social difficulties experienced by deaf individuals are unlikely to be associated with brain alterations but may rather depend on non-supportive environments.
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Affiliation(s)
- Maria Arioli
- Department of Human and Social SciencesUniversity of BergamoBergamoItaly
| | - Cecilia Segatta
- Department of Human and Social SciencesUniversity of BergamoBergamoItaly
| | - Costanza Papagno
- Center for Mind/Brain Sciences (CIMeC)University of TrentoTrentoItaly
| | | | - Zaira Cattaneo
- Department of Human and Social SciencesUniversity of BergamoBergamoItaly
- IRCCS Mondino FoundationPaviaItaly
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32
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Irurtzun A. Biological, cultural, and environmental factors catalyzing the emergence of (alternate) sign languages. Front Psychol 2023; 14:1224437. [PMID: 37928584 PMCID: PMC10620713 DOI: 10.3389/fpsyg.2023.1224437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 09/13/2023] [Indexed: 11/07/2023] Open
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Malesci R, Lombardi M, Abenante V, Fratestefano F, Del Vecchio V, Fetoni AR, Troisi J. A Systematic Review on Metabolomics Analysis in Hearing Impairment: Is It a Possible Tool in Understanding Auditory Pathologies? Int J Mol Sci 2023; 24:15188. [PMID: 37894867 PMCID: PMC10607298 DOI: 10.3390/ijms242015188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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: 08/17/2023] [Revised: 09/27/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
With more than 466 million people affected, hearing loss represents the most common sensory pathology worldwide. Despite its widespread occurrence, much remains to be explored, particularly concerning the intricate pathogenic mechanisms underlying its diverse phenotypes. In this context, metabolomics emerges as a promising approach. Indeed, lying downstream from molecular biology's central dogma, the metabolome reflects both genetic traits and environmental influences. Furthermore, its dynamic nature facilitates well-defined changes during disease states, making metabolomic analysis a unique lens into the mechanisms underpinning various hearing impairment forms. Hence, these investigations may pave the way for improved diagnostic strategies, personalized interventions and targeted treatments, ultimately enhancing the clinical management of affected individuals. In this comprehensive review, we discuss findings from 20 original articles, including human and animal studies. Existing literature highlights specific metabolic changes associated with hearing loss and ototoxicity of certain compounds. Nevertheless, numerous critical issues have emerged from the study of the current state of the art, with the lack of standardization of methods, significant heterogeneity in the studies and often small sample sizes being the main limiting factors for the reliability of these findings. Therefore, these results should serve as a stepping stone for future research aimed at addressing the aforementioned challenges.
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Affiliation(s)
- Rita Malesci
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Martina Lombardi
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, 84084 Fisciano, Italy
- European Institute of Metabolomics (EIM) Foundation ETS, G. Puccini, 2, 84081 Baronissi, Italy
| | - Vera Abenante
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
| | - Federica Fratestefano
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
| | - Valeria Del Vecchio
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Anna Rita Fetoni
- Department of Neuroscience, Reproductive Sciences and Dentistry (Audiology and Vestibology Service), University of Naples Federico II, 80138 Napoli, Italy; (V.D.V.); (A.R.F.)
| | - Jacopo Troisi
- Theoreo srl, Spin off Company of the University of Salerno, Via Degli Ulivi 3, 84090 Montecorvino Pugliano, Italy; (V.A.); (F.F.); (J.T.)
- Department of Chemistry and Biology “A. Zambelli”, University of Salerno, 84084 Fisciano, Italy
- European Institute of Metabolomics (EIM) Foundation ETS, G. Puccini, 2, 84081 Baronissi, Italy
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy
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Muñoz Quispe ME, Mendoza Cóndor MJ, Cahuana Vílchez JE, Mattos-Vela MA. [Deaf people and sign language: an enigma in dentistry]. Rev Cient Odontol (Lima) 2023; 10:e135. [PMID: 38390608 PMCID: PMC10880720 DOI: 10.21142/2523-2754-1004-2022-135] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/13/2022] [Indexed: 02/24/2024] Open
Abstract
Sign language is the main means of communication for deaf people; consists of the combination of manual, body and facial movements with specific meanings. Among the main barriers faced by this community are the lack of communication, shortage of health services, added to the inexperience and lack of knowledge of sign language by the health professional. This article aims to raise awareness of the importance and need of sign language in dental clinical care and professional training, as well as strategies, tools and recommendations for better care for deaf people. Databases such as SciELO, Google Scholar, PubMed and ScienceDirect were included during the years 2007 and 2021 It was concluded that the main barriers during communication are the little knowledge of sign language in dentists, the little access to interpreters and difficulties in obtaining appointments; affecting the susceptibility to develop oral diseases. The inclusion of sign language courses within the university curriculum provides academic and professional ethics benefits; however, follow-up is necessary to confirm compliance with the requested parameters. Among the main tools and strategies, the use of educational videos, the accompaniment of interpreters and, in view of technological development, the use of mobile applications, can facilitate communication. Likewise, a set of recommendations is proposed for the approach of adult and child deaf patients.
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Kurt E, Çoraplı M, Oktay C, Olgun A, Parlak ME. Computed Tomography and Magnetic Resonance Imaging for Congenital Hearing Loss: A Retrospective Study. Eurasian J Med 2023; 55:169-172. [PMID: 37909185 PMCID: PMC10724725 DOI: 10.5152/eurasianjmed.2023.22196] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/28/2022] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE The aim of this study is to evaluate the relationship between the cochlear nerve and the anatomical structures of the cochlea and internal acoustic canal in patients with congenital hearing loss. MATERIALS AND METHODS Temporal tomography and magnetic resonance images of 44 patients (88 ears) with non-syndromic congenital hearing loss were retrospectively analyzed between 2018 and 2021. Patients were divided into 2 groups according to cochlear nerve hypoplasia. Cochlear nerve canal width, cochlear basal/ middle turn widths, and internal auditory canal widths were examined. RESULTS Cochlear nerve hypoplasia was detected in 18.2% (n=16) of the patients and all of the patients with cochlear nerve hypoplasia had severe hearing loss. A statistically significant difference was found between the structures' widths in patients with and without cochlear nerve hypoplasia, in cochlear nerve canal and coronal width of the internal auditory canal. When stenosis is accepted as <1.4 mm for cochlear nerve canal and <3.80 mm for coronal width of the internal auditory canal, cochlear nerve hypoplasia differs statistically between the groups in measurements (respectively; P < .001, P=.018). CONCLUSIONS In patients with sensorineural hearing loss, cochlear nerve hypoplasia may accompany. Anatomical structures are important in predicting cochlear nerve hypoplasia from temporal computed tomography. Cochlear nerve hypoplasia should be suspected if the cochlear nerve canal and coronal width of the internal auditory canal are less than 1.4 mm and 3.8 mm, respectively, on temporal computed tomography.
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Affiliation(s)
- Ercan Kurt
- Department of Otolaryngology, Adıyaman Training and Research Hospital, Adıyaman, Turkey
| | - Mahmut Çoraplı
- Department of Radiology, Adıyaman Training and Research Hospital, Adıyaman, Turkey
| | - Cemil Oktay
- Department of Radiology, Adıyaman Training and Research Hospital, Adıyaman, Turkey
| | - Abdulkerim Olgun
- Department of Plastic and Reconstructive Surgery, Atatürk University Hospital, Erzurum, Turkey
| | - Mehmet Emin Parlak
- Department of Child Healthy and Diseases, Kahta State Hospital, Adıyaman, Turkey
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Vande Walle C, Keymeulen A, Oostra A, Schiettecatte E, Dhooge IJ, Smets K, Herregods N. Implications of isolated white matter abnormalities on neonatal MRI in congenital CMV infection: a prospective single-centre study. BMJ Paediatr Open 2023; 7:e002097. [PMID: 37844971 PMCID: PMC10582994 DOI: 10.1136/bmjpo-2023-002097] [Citation(s) in RCA: 1] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/19/2023] [Indexed: 10/18/2023] Open
Abstract
OBJECTIVE Investigating the clinical implications of isolated white matter abnormalities on neonatal brain MRI in congenital cytomegalovirus (CMV). DESIGN Prospective, observational. PATIENTS/INTERVENTIONS Two paediatric radiologists, blinded to clinical data, independently scored the white matter in 286 newborns with congenital CMV. After assessing interobserver variability, mean score was used to categorise white matter (normal, doubtful or abnormal). Patients with other brain abnormalities were excluded. MAIN OUTCOME MEASURES Hearing and neuromotor evaluation. RESULTS Cohen's weighted kappa was 0.79 (95% CI 0.73 to 0.84). White matter was normal in 121 patients, doubtful in 62, abnormal in 28. Median clinical follow-up was 12.0 months (IQR 12.0-27.7 months). Neonatal hearing loss occurred in 4/27 patients (14.8%) with abnormal, 1/118 patients (0.8%) with normal and 1/62 patients (1.6%) with doubtful white matter (p<0.01). Impaired cognitive development was seen in 3/27 patients (11.1%) with abnormal, 3/114 patients (2.6%) with normal and 1/59 patients (1.7%) with doubtful white matter (p=0.104). Alberta Infant Motor Scale (AIMS) was below P75 in 21/26 patients (80.8%) with abnormal, 73/114 patients (64.0%) with normal and 36/57 patients (63.2%) with doubtful white matter (p=0.231). In a subgroup of patients with minimal clinical follow-up of 18 months, AIMS score was below P75 in 10/13 patients (76.9%) with abnormal, 13/34 patients (38.2%) with normal and 7/20 patients (35.0%) with doubtful white matter (p<0.05). CONCLUSIONS Abnormal white matter was associated with neonatal hearing loss and mild, lower motor scores. A tendency towards impaired cognitive development was seen. Patients with doubtful white matter did not show worse clinical outcome.
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Affiliation(s)
- Caroline Vande Walle
- Department of Radiology and Nuclear Medicine, Universitair Ziekenhuis Gent, Gent, Belgium
| | | | - Ann Oostra
- Centre for Developmental Disorders, Universitair Ziekenhuis Gent, Gent, Belgium
| | - Eva Schiettecatte
- Department of Radiology and Nuclear Medicine, Universitair Ziekenhuis Gent, Gent, Belgium
| | | | - Koenraad Smets
- Department of Neonatology, Universitair Ziekenhuis Gent, Gent, Belgium
| | - Nele Herregods
- Department of Radiology and Nuclear Medicine, Universitair Ziekenhuis Gent, Gent, Belgium
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Sakaki Y, Hosoya M, Nishiyama T, Wakabayashi T, Shimanuki MN, Ozawa H, Oishi N. A Case of Vestibular Schwannoma with Deafness Showing Remarkable Hearing Recovery Following Hearing-Preserving Surgery. J Int Adv Otol 2023; 19:426-430. [PMID: 37789631 PMCID: PMC10645190 DOI: 10.5152/iao.2023.221035] [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: 12/23/2022] [Accepted: 05/01/2023] [Indexed: 10/05/2023] Open
Abstract
Surgery for vestibular schwannoma can be divided into hearing-preserving and nonhearing-preserving surgeries. Hearing-preserving surgery is usually not considered in patients with deafness due to vestibular schwannoma, because hearing is unlikely to improve, and surgery aims to maximize the tumor resection at the expense of hearing. We report an extremely rare case of a 46-year-old man with unilateral profound hearing loss due to a vestibular schwannoma with marked cystic degeneration in the left cistern, which significantly recovered to near-normal hearing levels after hearing-preserving surgery. Hearing loss gradually worsened, and preoperative pure-tone evaluation showed complete hearing loss in the left ear. However, the response to the distortion product otoacoustic emission was preserved, and hearing loss was considered to be retrocochlear. Tumor resection was performed using the retrolabyrinthine approach with continuous monitoring using dorsal cochlear nucleus action potential, auditory brainstem response, and facial nerve function muscle action potential. The cistern portion of the tumor was almost completely resected along with the wall. Postoperatively, the pure-tone threshold on the left side markedly improved. The present case clearly demonstrates the possibility of hearing recovery in patients with retrocochlear hearing loss. We should consider expanding the indications for hearing-preserving surgery.
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Affiliation(s)
- Yusuke Sakaki
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Makoto Hosoya
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Takanori Nishiyama
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Takeshi Wakabayashi
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Marie N. Shimanuki
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Hiroyuki Ozawa
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Naoki Oishi
- Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan
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Cesaroni CA, Napoli M, Spagnoli C, Rizzi S, Frattini D, Fusco C. Posterior Cranial Fossa Malformation and Vascular Dysplasia in GJB2 Gene Mutation. Can J Neurol Sci 2023:1-3. [PMID: 37680178 DOI: 10.1017/cjn.2023.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Affiliation(s)
- Carlo Alberto Cesaroni
- Department of Pediatrics, Child Neurology Unit, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
| | - Manuela Napoli
- Neuroradiology Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Carlotta Spagnoli
- Department of Pediatrics, Child Neurology Unit, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
| | - Susanna Rizzi
- Department of Pediatrics, Child Neurology Unit, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
| | - Daniele Frattini
- Department of Pediatrics, Child Neurology Unit, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
| | - Carlo Fusco
- Department of Pediatrics, Child Neurology Unit, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
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Herran RM, Montgomery CJ, Henning SC, Herbert CJ, Ditmars AM, Yates CJ, Pisoni DB, Kronenberger WG. Speed of Information Processing and Verbal Working Memory in Children and Adolescents With Cochlear Implants. Otol Neurotol 2023; 44:e613-e620. [PMID: 37504975 PMCID: PMC10527241 DOI: 10.1097/mao.0000000000003966] [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: 07/29/2023]
Abstract
BACKGROUND Verbal working memory delays are found in many deaf children with cochlear implants compared with normal-hearing peers, but the factors contributing to these delays are not well understood. This study investigated differences between cochlear implant users and normal-hearing peers in memory scanning speed during a challenging verbal working memory task. To better understand variability in verbal working memory capacity within each sample, associations between memory scanning speed, speech recognition, and language were also investigated. METHODS Twenty-five prelingually deaf, early implanted children (age, 8-17 yr) with cochlear implants and 25 normal-hearing peers completed the Wechsler Intelligence Scale for Children, Fifth Edition, Letter-Number Sequencing (LNS) working memory task. Timing measures were made for response latency and average pause duration between letters/numbers recalled during the task. Participants also completed measures of speech recognition, vocabulary, and language comprehension. RESULTS Children with cochlear implants had longer pause durations than normal-hearing peers during three-span LNS sequences, but the groups did not differ in response latencies or in pause durations during two-span LNS sequences. In the sample of cochlear implant users, poorer speech recognition was correlated with longer pause durations during two-span sequences, whereas poorer vocabulary and weaker language comprehension were correlated with longer response latencies during two-span sequences. Response latencies and pause durations were unrelated to language in the normal-hearing sample. CONCLUSION Children with cochlear implants have slower verbal working memory scanning speed than children with normal hearing. More robust phonological-lexical representations of language in memory may facilitate faster memory scanning speed and better working memory in cochlear implant users.
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Affiliation(s)
- Reid M Herran
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
| | - Caitlin J Montgomery
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
| | - Shirley C Henning
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
| | - Carolyn J Herbert
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
| | - Allison M Ditmars
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
| | - Catherine J Yates
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis
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Ramos-Sánchez RY, López-Fontanet JJ, Izquierdo N. Adult Refsum Disease in Puerto Rico: A Case Report. Cureus 2023; 15:e45426. [PMID: 37859930 PMCID: PMC10581862 DOI: 10.7759/cureus.45426] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2023] [Indexed: 10/21/2023] Open
Abstract
Patients with adult Refsum Disease (ARD) have retinitis pigmentosa and thus nyctalopia, anosmia, sensorineural deafness, polyneuropathy, and ataxia. Upon physical examination, patients with ARD have congenital short metacarpals, metatarsals, and cardiac arrhythmias. Manifestations due to the lack of phytanoyl-CoA hydroxylase in peroxisomes needed for alpha-oxidation of phytanic acid lead patients to accumulate phytanic acid in their body tissues. To our knowledge, no consensus for clinical diagnostic criteria for patients with ARD has been published. Our patient had nyctalopia, retinal findings, and visual field results compatible with retinitis pigmentosa. Additionally, the patient had decreased macular thickness and volume in both eyes, the findings being worse in the left eye. The patient had undergone hand surgery due to chronic pain in both hands, as well as his fourth and fifth metatarsal bones were shortened. Interestingly, audiology evaluation showed mild hearing loss in the right ear and mild to moderate hearing loss in the left ear. Inheritance patterns in patients with ARD have been described. Physical examination, phytanic acid evaluation, and genetic studies may all help reach an ARD diagnosis. This is the first report of adult Refsum disease in Puerto Rico.
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Affiliation(s)
- Raúl Y Ramos-Sánchez
- Ophthalmology, University of Puerto Rico, Medical Sciences Campus, San Juan, PRI
| | | | - Natalio Izquierdo
- Ophthalmology, University of Puerto Rico, Medical Sciences Campus, San Juan, PRI
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Nagappa M, Sharma S, Govindaraj P, Chickabasaviah YT, Siram R, Shroti A, Seshagiri DV, Debnath M, Sinha S, Bindu PS, Taly AB. Characterisation of Patients with SH3TC2 Associated Neuropathy in an Indian Cohort. Neurol India 2023; 71:940-945. [PMID: 37929431 DOI: 10.4103/0028-3886.388101] [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: 11/07/2023]
Abstract
Background SH3TC2 variations lead to demyelinating recessive Charcot-Marie-Tooth (CMT) disease, which is commonly associated with early-onset scoliosis and cranial neuropathy. Data from Indian ethnicity is limited. Objective We aim to report the characteristics of patients with SH3TC2-associated neuropathy from an Indian cohort. Patients and Methods Data of five unrelated subjects with SH3TC2 variations were analyzed. Results Clinical features included female predominance (n = 4), early-onset neuropathy (n = 2), pes cavus and hammer toes (n = 4), kyphoscoliosis (n = 1), impaired vision and hearing (n = 1), facial muscle weakness (n = 1), impaired kinaesthetic sense (n = 3), tremor (n = 2), and ataxia (n = 1). Four patients had the "CMT" phenotype, while one patient had Roussy-Levy syndrome. All had demyelinating electrophysiology with conduction velocities being "very slow" in one, "slow" in one, "mildly slow" in two, and "intermediate" in one patient. Brain stem auditory evoked potentials were universally abnormal though only one patient had symptomatic deafness. Seven variants were identified in SH3TC2 [homozygous = 3 (c.1412del, c.69del, c.3152G>A), heterozygous = 4 (c.1105C>T, c.3511C>T, c.2028G>C, c.254A>T)]. Except for c.3511C>T variant, the rest were novel. Three patients had additional variations in genes having pathobiological relevance in other CMTs or amyotrophic lateral sclerosis. Conclusion We provide data on a cohort of patients of Indian origin with SH3TC2 variations and highlight differences from other cohorts. Though the majority were not symptomatic for hearing impairment, evoked potentials disclosed abnormalities in all. Further studies are required to establish the functional consequences of novel variants and their interacting molecular partners identified in the present study to strengthen their association with the phenotype.
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Affiliation(s)
- Madhu Nagappa
- Department of Neurology; Department of Neuromuscular Laboratory, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Shivani Sharma
- Department of Neurology; Department of Neuropathology; Department of Neuromuscular Laboratory, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | | | - Yasha T Chickabasaviah
- Department of Neuropathology; Department of Neuromuscular Laboratory, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Ramesh Siram
- Department of Neurology, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Akhilesh Shroti
- Department of Neurology, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Doniparthi V Seshagiri
- Department of Neurology, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Monojit Debnath
- Department of Human Genetics, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Sanjib Sinha
- Department of Neurology, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Parayil S Bindu
- Department of Neurology; Department of Neuromuscular Laboratory, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
| | - Arun B Taly
- Department of Neurology; Department of Neuromuscular Laboratory, Neurobiology Research Centre (NBRC), National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, Karnataka, India
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Yoshimura H, Watanabe K, Nishio SY, Takumi Y, Usami SI. Determining optimal cochlear implant electrode array with OTOPLAN. Acta Otolaryngol 2023; 143:748-752. [PMID: 37737708 DOI: 10.1080/00016489.2023.2256790] [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: 07/21/2023] [Accepted: 08/25/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND To achieve better speech performance following cochlear implantation (CI), measuring the patient's cochlear duct length (CDL) and determining the appropriate length of the CI array are important. OBJECTIVE To investigate the CDL in CI patients after using the OTOPLAN software preoperatively and compare the results of angular insertion depth (AID) estimation by OTOPLAN and postoperative radiography. MATERIALS AND METHODS The study included 105 Japanese CI patients with normal cochleae. We measured the CDL using OTOPLAN and the position of the tip channel of the electrode for each selected electrode array, and estimated the AID using the software. RESULTS The mean CDL was 35.1 ± 1.6 mm. Preoperatively, the mean estimated AID was 580.3 ± 57.8°. Postoperative radiography revealed a mean AID of 583.0 ± 56.7°, demonstrating a strong linear correlation between the two measurements (R2 = 0.635). CONCLUSION AND SIGNIFICANCE Our findings revealed that CDL varies widely, which is consistent with previous studies. To achieve better speech perception, surgeons should select the appropriate length of CI electrode array based on the individual's CDL. Preoperative measurement of each CDL by OTOPLAN, which is clinically feasible and comparable to postoperative evaluation, can be used to ensure selection of the appropriate electrode array length.
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Affiliation(s)
- Hidekane Yoshimura
- Department of Otorhinolaryngology - Head and Neck Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kizuki Watanabe
- Department of Otorhinolaryngology - Head and Neck Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ya Nishio
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yutaka Takumi
- Department of Otorhinolaryngology - Head and Neck Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-Ichi Usami
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
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李 勇, 池 文, 林 垦, 祖 金, 邵 华, 毛 志, 陈 泉, 马 静. [ TCOF1 Gene variation in Treacher Collins syndrome and evaluation of speech rehabilitation after bone bridge surgery]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 37:748-754. [PMID: 37640998 PMCID: PMC10722122 DOI: 10.13201/j.issn.2096-7993.2023.09.011] [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] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/25/2023] [Indexed: 08/31/2023]
Abstract
Objective:By analyzing the clinical phenotypic characteristics and gene sequences of two patients with Treacher Collins syndrome(TCS), the biological causes of the disease were determined. Then discuss the therapeutic effect of hearing intervention after bone bridge implantation. Methods:All clinical data of the two family members were collected, and the patients signed the informed consent. The peripheral blood of the proband and family members was extracted, DNA was extracted for whole exome sequencing, and Sanger sequencing was performed on the family members for the mutation site.TCOF1genetic mutations analysis was performed on the paitents. Then, the hearing threshold and speech recognition rate of family 2 proband were evaluated and compared under the sound field between bare ear and wearing bone bridge. Results:In the two pedigrees, the probands of both families presented with auricle deformity, zygomatic and mandibular hypoplasia, micrognathia, hypotropia of the eye fissure, and hypoplasia of the medial eyelashes. The proband of Family 1 also presents with specific features including right-sided narrow anterior nasal aperture and dental hypoplasia, which were consistent with the clinical diagnosis of Treacher Collins syndrome. Genetic testing was conducted on both families, and two heterozygous mutations were identified in the TCOF1 gene: c. 1350_1351dupGG(p. A451Gfs*43) and c. 4362_4366del(p. K1457Efs*12), resulting in frameshift mutations in the amino acid sequence. Sanger sequencing validation of the TCOF1 gene in the parents of the proband in Family 1 did not detect any mutations. Proband 1 TCOF1 c. 1350_1351dupGG heterozygous variants have not been reported previously. The postoperative monosyllabic speech recognition rate of family 2 proband was 76%, the Categories of Auditory Performance(CAP) score was 6, and the Speech Intelligibility Rating(SIR) score was 4. Assessment using the Meaningful Auditory Integration Scale(MAIS) showed notable improvement in the patient's auditory perception, comprehension, and usage of hearing aids. Evaluation using the Glasgow Children's Benefit Inventory and quality of life assessment revealed significant improvements in the child's self care abilities, daily living and learning, social interactions, and psychological well being, as perceived by the parents. Conclusion:This study has elucidated the biological cause of Treacher Collins syndrome, enriched the spectrum of TCOF1 gene mutations in the Chinese population, and demonstrated that bone bridge implantation can improve the auditory and speech recognition rates in TCS patients.
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Affiliation(s)
- 勇桦 李
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 文月 池
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 垦 林
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 金艳 祖
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 华 邵
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 志勇 毛
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 泉东 陈
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
| | - 静 马
- 昆明市儿童医院(昆明医科大学附属儿童医院)耳鼻咽喉头颈外科(昆明,650228)Department of Otorhinolaryngology Head and Neck Surgery, Kunming Children's Hospital[Children's Hospital Affiliated to Kunming Medical University], Kunming, 650228, China
- 昆明市儿童先天出生缺陷防控研究重点实验室Kunming Key Laboratory for Prevention and Control of Congenital Birth Defects of Children
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Cadoni G, Primiano G, Picciotti PM, Calandrelli R, Galli J, Servidei S, Conti G. Hearing Impairment and Neuroimaging Results in Mitochondrial Diseases. J Pers Med 2023; 13:1329. [PMID: 37763097 PMCID: PMC10532611 DOI: 10.3390/jpm13091329] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/26/2023] [Accepted: 08/27/2023] [Indexed: 09/29/2023] Open
Abstract
Mitochondrial diseases (MDs) are heterogeneous genetic disorders characterized by mitochondrial DNA (mtDNA) defects, involving tissues highly dependent on oxidative metabolism: the inner ear, brain, eye, skeletal muscle, and heart. We describe adult patients with genetically defined MDs, characterizing hearing function and neuroimaging results. We enrolled 34 patients (mean age: 50.02 ± 15 years, range: 18-75 years; 20 females and 14 males) classified in four groups: MELAS, MIDD, PEO, and Encephalopathy/Polyneuropathy. Audiological evaluations included psychoacoustical tests (pure-tone and speech audiometry), electrophysiological tests (Auditory Brainstem Responses, ABRs), and Impedenzometry. Neuroimaging evaluations considered global MRI abnormalities or structural brain changes. In total, 19/34 patients carried the m.3243A > G mutation (6 affected by MELAS, 12 affected by MIDD, and 1 affected by PEO); 11 had an mtDNA deletion (all affected by PEO); 3 had nuclear genes associated with MDs (POLG1 and OPA1); and 1 patient had an mtDNA deletion without an identified nuclear gene defect (affected by PEO). Sensory neural, bilateral, and symmetrical hearing loss was present in 25 patients (73.5%) to different degrees: 9 mild, 9 moderate, 5 severe, and 2 profound. The severe/profound and mild hearing losses were associated with pantonal and high-frequency audiograms, respectively. Instead, moderate hearing losses were associated with both high-frequency (five cases) and pantonal (five cases) audiogram shapes. In addition, 21/25 patients showed a cochlear site of lesion (84%), and 4/25 (16%) showed a retrocochlear site. We found global MRI abnormalities or structural brain changes in 26/30 subjects (86.6%): 21 had white matter abnormalities, 15 had cortical atrophy, 10 had subcortical atrophy, 8 had basal nuclei involvement or cerebellar atrophy, 4 had stroke-like lesions or laminar necrosis, and 1 had cysts or vacuolated lesions. We concluded that genetic alterations are associated with different clinical presentations for both auditory function and neuroradiological findings. There is no fixed relationship between genotype and phenotype for the clinical conditions analyzed.
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Affiliation(s)
- Gabriella Cadoni
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Testa-Collo e Organi di Senso, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Guido Primiano
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Pasqualina M. Picciotti
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Testa-Collo e Organi di Senso, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Rosalinda Calandrelli
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Jacopo Galli
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Testa-Collo e Organi di Senso, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Serenella Servidei
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Guido Conti
- Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.C.); (G.P.); (J.G.); (S.S.); (G.C.)
- Dipartimento di Testa-Collo e Organi di Senso, Catholic University of the Sacred Heart, 00168 Rome, Italy
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Breun M, Flock K, Feldheim J, Nattmann A, Monoranu CM, Herrmann P, Ernestus RI, Löhr M, Hagemann C, Stein U. Metastasis Associated in Colorectal Cancer 1 (MACC1) mRNA Expression Is Enhanced in Sporadic Vestibular Schwannoma and Correlates to Deafness. Cancers (Basel) 2023; 15:4089. [PMID: 37627117 PMCID: PMC10452285 DOI: 10.3390/cancers15164089] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Vestibular schwannoma (VS) are benign cranial nerve sheath tumors of the vestibulocochlear nerve. Their incidence is mostly sporadic, but they can also be associated with NF2-related schwannomatosis (NF2), a hereditary tumor syndrome. Metastasis associated in colon cancer 1 (MACC1) is known to contribute to angiogenesis, cell growth, invasiveness, cell motility and metastasis of solid malignant cancers. In addition, MACC1 may be associated with nonsyndromic hearing impairment. Therefore, we evaluated whether MACC1 may be involved in the pathogenesis of VS. Sporadic VS, recurrent sporadic VS, NF2-associated VS, recurrent NF2-associated VS and healthy vestibular nerves were analyzed for MACC1 mRNA and protein expression by quantitative polymerase chain reaction and immunohistochemistry. MACC1 expression levels were correlated with the patients' clinical course and symptoms. MACC1 mRNA expression was significantly higher in sporadic VS compared to NF2-associated VS (p < 0.001). The latter expressed similar MACC1 concentrations as healthy vestibular nerves. Recurrent tumors resembled the MACC1 expression of the primary tumors. MACC1 mRNA expression was significantly correlated with deafness in sporadic VS patients (p = 0.034). Therefore, MACC1 might be a new molecular marker involved in VS pathogenesis.
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Affiliation(s)
- Maria Breun
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
| | - Katharina Flock
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
| | - Jonas Feldheim
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
- Division of Clinical Neurooncology, Department of Neurology, University Hospital Essen, 45147 Essen, Germany
| | - Anja Nattmann
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
- Department of Ophthalmology, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Camelia M. Monoranu
- Institute of Pathology, Department of Neuropathology, University of Würzburg, 97080 Würzburg, Germany
| | - Pia Herrmann
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Ralf-Ingo Ernestus
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
| | - Mario Löhr
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
| | - Carsten Hagemann
- Section Experimental Neurosurgery, Department of Neurosurgery, University Hospital Würzburg, 97080 Würzburg, Germany (A.N.)
| | - Ulrike Stein
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
- German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
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46
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Gonçalves CI, Carriço JN, Omar OM, Abdalla E, Lemos MC. Hypoparathyroidism, deafness and renal dysplasia syndrome caused by a GATA3 splice site mutation leading to the activation of a cryptic splice site. Front Endocrinol (Lausanne) 2023; 14:1207425. [PMID: 37600721 PMCID: PMC10436458 DOI: 10.3389/fendo.2023.1207425] [Citation(s) in RCA: 1] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/13/2023] [Indexed: 08/22/2023] Open
Abstract
The HDR syndrome is a rare autosomal dominant disorder characterised by Hypoparathyroidism, Deafness, and Renal dysplasia, and is caused by inactivating heterozygous germline mutations in the GATA3 gene. We report an 11-year-old girl with HDR syndrome caused by a heterozygous mutation located at the splice acceptor site of exon 5 of the GATA3 gene (NM_001002295.2: c.925-1G>T). Functional studies using a minigene assay showed that this splice site mutation abolished the normal splicing of the GATA3 pre-mRNA and led to the use of a cryptic splice acceptor site, resulting in the loss of the first seven nucleotides (TCTGCAG) of exon 5 in the GATA3 mRNA. These findings increase the understanding of the mechanisms by which GATA3 splicing mutations can cause HDR syndrome.
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Affiliation(s)
- Catarina I. Gonçalves
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Josianne N. Carriço
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Omneya M. Omar
- Department of Pediatrics, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Ebtesam Abdalla
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Manuel C. Lemos
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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Peters CW, Hanlon KS, Ivanchenko MV, Zinn E, Linarte EF, Li Y, Levy JM, Liu DR, Kleinstiver BP, Indzhykulian AA, Corey DP. Rescue of hearing by adenine base editing in a humanized mouse model of Usher syndrome type 1F. Mol Ther 2023; 31:2439-2453. [PMID: 37312453 PMCID: PMC10421997 DOI: 10.1016/j.ymthe.2023.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 12/31/2022] [Revised: 04/03/2023] [Accepted: 06/08/2023] [Indexed: 06/15/2023] Open
Abstract
Usher syndrome type 1F (USH1F), characterized by congenital lack of hearing and balance and progressive loss of vision, is caused by mutations in the PCDH15 gene. In the Ashkenazi population, a recessive truncation mutation accounts for a large proportion of USH1F cases. The truncation is caused by a single C→T mutation, which converts an arginine codon to a stop (R245X). To test the potential for base editors to revert this mutation, we developed a humanized Pcdh15R245X mouse model for USH1F. Mice homozygous for the R245X mutation were deaf and exhibited profound balance deficits, while heterozygous mice were unaffected. Here we show that an adenine base editor (ABE) is capable of reversing the R245X mutation to restore the PCDH15 sequence and function. We packaged a split-intein ABE into dual adeno-associated virus (AAV) vectors and delivered them into cochleas of neonatal USH1F mice. Hearing was not restored in a Pcdh15 constitutive null mouse despite base editing, perhaps because of early disorganization of cochlear hair cells. However, injection of vectors encoding the split ABE into a late-deletion conditional Pcdh15 knockout rescued hearing. This study demonstrates the ability of an ABE to correct the PCDH15 R245X mutation in the cochlea and restore hearing.
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Affiliation(s)
- Cole W Peters
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Killian S Hanlon
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Department of Neurology, Harvard Medical School and Massachusetts General Hospital, Boston, MA 02114, USA
| | | | - Eric Zinn
- Grousbeck Gene Therapy Center, Schepens Eye Research Institute, Massachusetts Eye and Ear, Boston, MA 02114, USA
| | | | - Yaqiao Li
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Jonathan M Levy
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard University, Cambridge, MA 02138, USA
| | - David R Liu
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard University, Cambridge, MA 02138, USA
| | - Benjamin P Kleinstiver
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Pathology, Harvard Medical School, Boston, MA 02115, USA
| | - Artur A Indzhykulian
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Department of Otolaryngology - Head and Neck Surgery, Harvard Medical School and Massachusetts Eye and Ear, Boston, MA 02114, USA
| | - David P Corey
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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Freeman L, Bristowe L, Kirk EP, Delatycki MB, Scully JL. Should genes for non-syndromic hearing loss be included in reproductive genetic carrier screening: Views of people with a personal or family experience of deafness. J Genet Couns 2023. [PMID: 37533186 DOI: 10.1002/jgc4.1757] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 06/26/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
Many commercial reproductive genetic carrier screening (RGCS) panels include genes associated with non-syndromic hearing loss (NSHL), however little is known about the general acceptability of their inclusion. Although some couples wish to avoid having a deaf child, there are effective interventions and supports available for deafness, and no consensus on whether it is appropriate to reproductively screen NSHL genes. This study explored views of people with personal experience of deafness regarding carrier screening for genes associated with NSHL. We interviewed 27 participants; 14 who identified as deaf and 13 hearing parents of a deaf child. Thematic analysis was undertaken on transcripts of interviews. The findings reveal the complexity of attitudes within these groups. Some vacillated between the wish to support prospective parents' reproductive autonomy and concerns about potential harms, especially the expression of negative messages about deafness and the potential loss of acceptance in society. While some participants felt carrier screening could help prospective parents to prepare for a deaf child, there was little support for reproductive screening and termination of pregnancy. Participants emphasized the need for accurate information about the lived experience of deafness. The majority felt deafness is not as severe as other conditions included in RGCS, and most do not consider deafness as a disability. People with personal experience of deafness have diverse attitudes towards RGCS for deafness informed by their own identify and experience, and many have concerns about how it should be discussed and implemented in a population wide RGCS program.
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Affiliation(s)
- Lucinda Freeman
- School of Women's and Children's Health, University of New South Wales, Randwick, New South Wales, Australia
- Graduate School of Health, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Lisa Bristowe
- Centre for Clinical Genetics, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia
| | - Edwin P Kirk
- School of Women's and Children's Health, University of New South Wales, Randwick, New South Wales, Australia
- Centre for Clinical Genetics, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia
- NSW Health Pathology East Genomics Laboratory, Randwick, New South Wales, Australia
| | - Martin B Delatycki
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Victorian Clinical Genetics Services, Parkville, Victoria, Australia
| | - Jackie Leach Scully
- Disability Innovation Institute, University of New South Wales, Randwick, New South Wales, Australia
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Delpire E, Koumangoye R. NKCC1 in human diseases: is the SLC12A2 gene haploinsufficient? Am J Physiol Cell Physiol 2023; 325:C385-C390. [PMID: 37399495 PMCID: PMC10393318 DOI: 10.1152/ajpcell.00238.2023] [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: 05/30/2023] [Revised: 06/17/2023] [Accepted: 06/17/2023] [Indexed: 07/05/2023]
Abstract
Mutations in the SLC12A2 gene, which encodes the Na-K-2Cl cotransporter-1 (NKCC1), are linked to various conditions such as neurodevelopmental deficits, deafness, and fluid secretion in different epithelia. Cases of complete NKCC1 deficiency in young patients are straightforward, leading to clinical presentations that overlap with the phenotypes observed in NKCC1 knockout mouse models. However, cases involving deleterious variants in one allele are more difficult, as the clinical presentation is variable, and the cause-effect relationship is not always clear. For instance, we worked on a single patient's case from multiple angles and published six related papers to convince ourselves of the cause-and-effect relationship between her NKCC1 mutation and her clinical presentations. The cluster of mutations in a small portion of the carboxyl terminus and its association with deafness point to a cause-and-effect relationship, even if the molecular mechanism is unknown. Overall, the preponderance of evidence suggests that the SLC12A2 gene is a human disease-causing and likely haploinsufficient gene that requires further investigation.
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Affiliation(s)
- Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States
| | - Rainelli Koumangoye
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States
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50
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Monda E, Prosnitz A, Aiello R, Lioncino M, Norrish G, Caiazza M, Drago F, Beattie M, Tartaglia M, Russo MG, Colan SD, Calcagni G, Gelb BD, Kaski JP, Roberts AE, Limongelli G. Natural History of Hypertrophic Cardiomyopathy in Noonan Syndrome With Multiple Lentigines. Circ Genom Precis Med 2023; 16:350-358. [PMID: 37199218 DOI: 10.1161/circgen.122.003861] [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] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 03/10/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND We aimed to examine clinical features and outcomes of consecutive molecularly characterized patients with Noonan syndrome with multiple lentigines and hypertrophic cardiomyopathy. METHODS A retrospective, longitudinal multicenter cohort of consecutive children and adults with a genetic diagnosis of Noonan syndrome with multiple lentigines and hypertrophic cardiomyopathy between 2002 and 2019 was assembled. We defined a priori 3 different patterns of left ventricular remodeling during follow-up: (1) an increase in ≥15% of the maximal left ventricular wall thickness (MLVWT), both in mm and z-score (progression); (2) a reduction ≥15% of the MLVWT, both in mm and z-score (absolute regression); (3) a reduction ≥15% of the MLVWT z-score with a stable MLVWT in mm (relative regression). The primary study end point was a composite of cardiovascular death, heart transplantation, and appropriate implantable cardioverter defibrillator-shock. RESULTS The cohort comprised 42 patients with Noonan syndrome with multiple lentigines and hypertrophic cardiomyopathy, with a median age at diagnosis of 3.5 (interquartile range, 0.2-12.3) years. Freedom from primary end point was 92.7% (95% CI, 84.7%-100%) 1 year after presentation and 80.9% (95% CI, 70.1%-90.7%) at 5 years. Patients with MLVWT z-score >13.7 showed reduced survival compared with those with <13.7. During a median follow-up of 3.7 years (interquartile range, 2.6-7.9), absolute regression was the most common type of left ventricular remodeling (n=9, 31%), followed by progression (n=6, 21%), and relative regression (n=6, 21%). CONCLUSIONS These findings provide insights into the natural history of left ventricular hypertrophy, and can help inform clinicians regarding risk stratification and clinical outcomes in patients with Noonan syndrome with multiple lentigines and hypertrophic cardiomyopathy.
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Affiliation(s)
- Emanuele Monda
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
| | - Aaron Prosnitz
- Congenital Heart Center, Levine Children's Hospital, Atrium Health, Charlotte, NC (A.P.)
| | - Rossella Aiello
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
| | - Michele Lioncino
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
| | - Gabrielle Norrish
- Centre for Pediatric Inherited and Rare Cardiovascular Disease, Institute of Cardiovascular Science, University College London, United Kingdom (G.N., J.P.K.)
- Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital, London, United Kingdom (G.N., J.P.K.)
| | - Martina Caiazza
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
| | - Fabrizio Drago
- Department of Pediatric Cardiology and Cardiac Surgery, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy (F.D., G.C.)
| | - Meaghan Beattie
- Department of Cardiology and Division of Genetics, Department of Pediatrics, Boston Children's Hospital, MA (M.B., S.D.C., A.E.R.)
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy (M.T.)
| | - Maria Giovanna Russo
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
| | - Steven D Colan
- Department of Cardiology and Division of Genetics, Department of Pediatrics, Boston Children's Hospital, MA (M.B., S.D.C., A.E.R.)
| | - Giulio Calcagni
- Department of Pediatric Cardiology and Cardiac Surgery, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy (F.D., G.C.)
| | - Bruce D Gelb
- Mindich Child Health and Development Institute and Departments of Pediatrics and Genetics and Genomic Science, Icahn School of Medicine at Mount Sinai, New York, NY (B.D.G.)
| | - Juan Pablo Kaski
- Centre for Pediatric Inherited and Rare Cardiovascular Disease, Institute of Cardiovascular Science, University College London, United Kingdom (G.N., J.P.K.)
- Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital, London, United Kingdom (G.N., J.P.K.)
| | - Amy E Roberts
- Department of Cardiology and Division of Genetics, Department of Pediatrics, Boston Children's Hospital, MA (M.B., S.D.C., A.E.R.)
| | - Giuseppe Limongelli
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy (E.M., R.A., M.L., M.C., M.G.R., G.L.)
- Institute of Cardiovascular Sciences, University College of London and St Bartholomew's Hospital, United Kingdom (G.L.)
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