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Chen A, Qu J, You Y, Pan J, Scheper V, Lin Y, Tian X, Shu F, Luo Y, Tang J, Zhang H. Intratympanic injection of MSC-derived small extracellular vesicles protects spiral ganglion neurons from degeneration. Biomed Pharmacother 2024; 179:117392. [PMID: 39232388 DOI: 10.1016/j.biopha.2024.117392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 08/23/2024] [Accepted: 08/30/2024] [Indexed: 09/06/2024] Open
Abstract
Sensorineural hearing loss is one of the most prevalent sensory deficits. Spiral ganglion neurons (SGNs) exhibit very limited regeneration capacity and their degeneration leads to profound hearing loss. Mesenchymal stem cell-derived small extracellular vesicles (MSC-sEV) have been demonstrated to repair tissue damage in various degenerative diseases. However, the effects of MSC-sEV on SGN degeneration remain unclear. In this study, we investigated the efficacy of MSC-sEV for protection against ouabain-induced SGN degeneration. MSC-sEV were derived from rat bone marrow and their components related to neuron growth were determined by proteomic analysis. In primary culture SGNs, MSC-sEV significantly promoted neurite growth and growth cone development. The RNA-Seq analysis of SGNs showed that enriched pathways include neuron development and axon regeneration, consistent with proteomics. In ouabain induced SGN degeneration rat model, MSC-sEV administration via intratympanic injection significantly enhanced SGN survival and mitigated hearing loss. Furthermore, after ouabain treatment, SGNs displayed evident signs of apoptosis, including nuclei condensation and fragmentation, with numerous cells exhibiting TUNEL-positive. However, administration of MSC-sEV effectively decreased the number of TUNEL-positive cells and reduced caspase-3 activation. In conclusion, our findings demonstrate the potential of MSC-sEV in preventing SGN degeneration and promoting neural growth, suggesting intratympanic injection of MSC-sEV is a specific and efficient strategy for neural hearing loss.
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Affiliation(s)
- Anning Chen
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Jiaxi Qu
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Yunyou You
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Jing Pan
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Verena Scheper
- Department of Otolaryngology, Hannover Medical School, Hannover 30625, Germany; Cluster of Excellence "Hearing4all", German Research Foundation, Hannover Medical School, Hannover 30625, Germany
| | - Yongdong Lin
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Xuexin Tian
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Fan Shu
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Yanjing Luo
- Department of Otolaryngology, Hannover Medical School, Hannover 30625, Germany; Cluster of Excellence "Hearing4all", German Research Foundation, Hannover Medical School, Hannover 30625, Germany
| | - Jie Tang
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Department of Physiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou 510515, China.
| | - Hongzheng Zhang
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Ear Research Institute, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
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Yin Y, Lyu X, Zhou J, Yu K, Huang M, Shen G, Hao C, Wang Z, Yu H, Gao B. Cerebral cortex functional reorganization in preschool children with congenital sensorineural hearing loss: a resting-state fMRI study. Front Neurol 2024; 15:1423956. [PMID: 38988601 PMCID: PMC11234816 DOI: 10.3389/fneur.2024.1423956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 06/07/2024] [Indexed: 07/12/2024] Open
Abstract
Purpose How cortical functional reorganization occurs after hearing loss in preschool children with congenital sensorineural hearing loss (CSNHL) is poorly understood. Therefore, we used resting-state functional MRI (rs-fMRI) to explore the characteristics of cortical reorganization in these patents. Methods Sixty-three preschool children with CSNHL and 32 healthy controls (HCs) were recruited, and the Categories of Auditory Performance (CAP) scores were determined at the 6-month follow-up after cochlear implantation (CI). First, rs-fMRI data were preprocessed, and amplitude of low-frequency fluctuation (ALFF) and regional homogeneity (ReHo) were calculated. Second, whole-brain functional connectivity (FC) analysis was performed using bilateral primary auditory cortex as seed points. Finally, Spearman correlation analysis was performed between the differential ALFF, ReHo and FC values and the CAP score. Results ALFF analysis showed that preschool children with CSNHL had lower ALFF values in the bilateral prefrontal cortex and superior temporal gyrus than HCs, but higher ALFF values in the bilateral thalamus and calcarine gyrus. And correlation analysis showed that some abnormal brain regions were weak negatively correlated with CAP score (p < 0.05). The ReHo values in the bilateral superior temporal gyrus, part of the prefrontal cortex and left insular gyrus were lower, whereas ReHo values in the bilateral thalamus, right caudate nucleus and right precentral gyrus were higher, in children with CSNHL than HCs. However, there was no correlation between ReHo values and the CAP scores (p < 0.05). Using primary auditory cortex (PAC) as seed-based FC further analysis revealed enhanced FC in the visual cortex, proprioceptive cortex and motor cortex. And there were weak negative correlations between the FC values in the bilateral superior temporal gyrus, occipital lobe, left postcentral gyrus and right thalamus were weakly negatively correlated and the CAP score (p < 0.05). Conclusion After auditory deprivation in preschool children with CSNHL, the local functions of auditory cortex, visual cortex, prefrontal cortex and somatic motor cortex are changed, and the prefrontal cortex plays a regulatory role in this process. There is functional reorganization or compensation between children's hearing and these areas, which may not be conducive to auditory language recovery after CI in deaf children.
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Affiliation(s)
- Yi Yin
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xinyue Lyu
- Guizhou Medical University, Guiyang, China
| | - Jian Zhou
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Kunlin Yu
- The Key Laboratory for Chemistry of Natural Product of Guizhou Province, Guizhou Medical University, Guiyang, China
| | - Mingming Huang
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guiquan Shen
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Cheng Hao
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Zhengfu Wang
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Hui Yu
- Department of Radiology, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Bo Gao
- Department of Radiology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Key Laboratory of Brain Imaging, Guizhou Medical University, Guiyang, China
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3
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Deng X, Yang X, Bu M, Tang A, Zhang H, Long L, Zeng Z, Wang Y, Chen P, Jiang M, Chen BT. Nomogram for prediction of hearing rehabilitation outcome in children with congenital sensorineural hearing loss after cochlear implantation. Heliyon 2024; 10:e29529. [PMID: 38699755 PMCID: PMC11063407 DOI: 10.1016/j.heliyon.2024.e29529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 05/05/2024] Open
Abstract
Background Reliable predictors for rehabilitation outcomes in patients with congenital sensorineural hearing loss (CSNHL) after cochlear implantation (CI) are lacking. The purchase of this study was to develop a nomogram based on clinical characteristics and neuroimaging features to predict the outcome in children with CSNHL after CI. Methods Children with CSNHL prior to CI surgery and children with normal hearing were enrolled into the study. Clinical data, high resolution computed tomography (HRCT) for ototemporal bone, conventional brain MRI for structural analysis and brain resting-state fMRI (rs-fMRI) for the power spectrum assessment were assessed. A nomogram combining both clinical and imaging data was constructed using multivariate logistic regression analysis. Model performance was evaluated and validated using bootstrap resampling. Results The final cohort consisted of 72 children with CSNHL (41 children with poor outcome and 31 children with good outcome) and 32 healthy controls. The white matter lesion from structural assessment and six power spectrum parameters from rs-fMRI, including Power4, Power13, Power14, Power19, Power23 and Power25 were used to build the nomogram. The area under the receiver operating characteristic (ROC) curve of the nomogram obtained using the bootstrapping method was 0.812 (95 % CI = 0.772-0.836). The calibration curve showed no statistical difference between the predicted value and the actual value, indicating a robust performance of the nomogram. The clinical decision analysis curve showed a high clinical value of this model. Conclusions The nomogram constructed with clinical data, and neuroimaging features encompassing ototemporal bone measurements, white matter lesion values from structural brain MRI and power spectrum data from rs-fMRI showed a robust performance in predicting outcome of hearing rehabilitation in children with CSNHL after CI.
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Affiliation(s)
- Xi Deng
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Xueqing Yang
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Meiru Bu
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Anzhou Tang
- Department of Otorhinolaryngology Head and Neck Surgery, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Huiting Zhang
- MR Research Collaboration, Siemens Healthineers Ltd., 430000, Wuhan, PR China
| | - Liling Long
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Zisan Zeng
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Yifeng Wang
- Institute of Brain and Psychological Sciences, Sichuan Normal University, No. 5, Jing'an Road, Chengdu, 610066, Sichuan, PR China
| | - Ping Chen
- Department of Otorhinolaryngology Head and Neck Surgery, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Muliang Jiang
- Department of Radiology, The First Affiliated Hospital of Guangxi Medical University, No.6 Shuangyong Road, Nanning, 530021, Guangxi, PR China
| | - Bihong T. Chen
- Department of Diagnostic Radiology, City of Hope National Medical Center, 1500 E, Duarte, CA, 91010, USA
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Chen Y, Mu W, Wu Y, Xu J, Li X, Hu H, Wang S, Wang D, Hui B, Wang L, Dong Y, Chen W. Optogenetically modified human embryonic stem cell-derived otic neurons establish functional synaptic connection with cochlear nuclei. J Tissue Eng 2024; 15:20417314241265198. [PMID: 39092452 PMCID: PMC11292720 DOI: 10.1177/20417314241265198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 06/14/2024] [Indexed: 08/04/2024] Open
Abstract
Spiral ganglia neurons (SGNs) impairment can cause deafness. One important therapeutic approach involves utilizing stem cells to restore impaired auditory circuitry. Nevertheless, the inadequate implementation of research methodologies poses a challenge in accurately assessing the functionality of derived cells within the circuit. Here, we describe a novel method for converting human embryonic stem cells (hESCs) into otic neurons (ONs) and assess their functional connectivity using an optogenetic approach with cells or an organotypic slice of rat cochlear nucleus (CN) in coculture. Embryonic stem cell-derived otic neurons (eONs) exhibited SGN marker expression and generated functional synaptic connection when cocultured with cochlear nucleus neurons (CNNs). Synapsin 1 and VGLUT expression are found in the cochlear nucleus of brain slices, where eONs projected processes during the coculture of eONs and CN brain slices. Action potential spikes and INa+/IK+ of CNNs increased in tandem with light stimulations to eONs. These findings provide further evidence that eONs may be a candidate source to treat SGN-deafness.
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Affiliation(s)
- Yanni Chen
- Institute of Translational Medicine, and Children’s Hospital Affiliated and Key Laboratory of Diagnosis and Treatment of Neonatal Diseases of Zhejiang Province, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- College of Public Health, Shanghai University of Medicine & Health Sciences, Shanghai China
- Institute of Wound Prevention and Treatment, Shanghai University of Medicine & Health Sciences, Shanghai, China
- Institute of Translational Medicine, School of Medicine, Zhejiang University, Hangzhou, China
| | - Wenbo Mu
- Institute of Translational Medicine, and Children’s Hospital Affiliated and Key Laboratory of Diagnosis and Treatment of Neonatal Diseases of Zhejiang Province, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- College of Public Health, Shanghai University of Medicine & Health Sciences, Shanghai China
- Institute of Wound Prevention and Treatment, Shanghai University of Medicine & Health Sciences, Shanghai, China
- Institute of Translational Medicine, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yongkang Wu
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, School of Physical Education & Health Care, East China Normal University, Shanghai, China
| | - Jiake Xu
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, China
| | - Xiaofang Li
- Department of Neurology of the First Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University School of Medicine, Hangzhou, China
| | - Hui Hu
- School of Laboratory Medicine and Bioengineering, Hangzhou Medical College, Hangzhou, China
| | - Siqi Wang
- College of Public Health, Shanghai University of Medicine & Health Sciences, Shanghai China
| | - Dali Wang
- Center for Clinical and Translational Medicine, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Bin Hui
- College of Pharmacy, Shanghai University of Medical & Health Sciences, Shanghai, China
| | - Lang Wang
- Department of Neurology of the First Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Dong
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, School of Physical Education & Health Care, East China Normal University, Shanghai, China
| | - Wei Chen
- Institute of Translational Medicine, and Children’s Hospital Affiliated and Key Laboratory of Diagnosis and Treatment of Neonatal Diseases of Zhejiang Province, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
- College of Public Health, Shanghai University of Medicine & Health Sciences, Shanghai China
- Institute of Wound Prevention and Treatment, Shanghai University of Medicine & Health Sciences, Shanghai, China
- Institute of Translational Medicine, School of Medicine, Zhejiang University, Hangzhou, China
- Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China
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Buonsenso D, Poretti G, Mariani F, Colonna AT, Costa S, Giordano L, Priolo F, Conti G, Tizio A, Rodolico D, Amorelli GM, Orazi L, Petrianni M, Ricci D, Lanzone A, Sanguinetti M, Cattani P, Raffaelli F, Sali M, Zampino G, Vento G, Valentini P. Acute and post-acute multidisciplinary outcomes of newborns born from mothers with SARS-CoV-2 infection during pregnancy or the perinatal period. Heliyon 2023; 9:e19206. [PMID: 37662770 PMCID: PMC10474402 DOI: 10.1016/j.heliyon.2023.e19206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/10/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
INTRODUCTION We performed a single-center, prospective, observational study of newborns born from mothers with microbiologically confirmed SARS-CoV-2 infection in pregnancy or at time of delivery to evaluate acute and mid-term multidisciplinary outcomes. METHODS Infants were offered a multidisciplinary follow-up consisting of nasopharyngeal Polymerase Chain Reaction test at birth and at 48-72 h of life, auxological and ophthalmological assessments, and serologic testing. RESULTS 791 women and their 791 children (52.3% males) were included. Most placentas (94.9%) had abnormal inflammatory findings. 171 (27.3%) and 36 (13.7%) children respectively had pathological TEOAEs in at least one ear and bilaterally, while only four of the 85 children that underwent ABR had pathological findings (4.7%). 64 children underwent fluorescein angiography, which resulted pathological only in 1 case (1.6%). Anti-SARS-CoV-2 IgGs were found in up to 60% of children tested at six months of age. Our findings showed no association between the maternal vaccination status or the presence of maternal symptoms during pregnancy and neonatal outcomes. CONCLUSIONS Our study shows that the large majority of newborns exposed to SARS-CoV-2 infection in utero or during the first hours of life have optimal outcomes. Our previous report of abnormal ophthalmologic findings was not confirmed on a larger cohort, while further studies are needed to better characterize audiological outcomes. Further prospective, case-controlled studies are still needed.
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Affiliation(s)
- Danilo Buonsenso
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
- Global Health Research Institute, Istituto di Igiene, Università Cattolica Del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Microbiologia, Università Cattolica Del Sacro Cuore, Rome, Italy
| | - Giulia Poretti
- Medicine and Surgery, Università Cattolica Del Sacro Cuore, 00168 Rome, Italy
| | - Francesco Mariani
- Pediatric Resident, Università Cattolica Del Sacro Cuore, 00168 Rome, Italy
| | | | - Simonetta Costa
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Lucia Giordano
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Francesca Priolo
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Guido Conti
- Institute of Otorhinolaryngology, Università Cattolica Del Sacro Cuore, Fondazione Policlinico “A Gemelli”, IRCCS, Rome, Italy
| | - Angelo Tizio
- Institute of Otorhinolaryngology, Università Cattolica Del Sacro Cuore, Fondazione Policlinico “A Gemelli”, IRCCS, Rome, Italy
| | - Daniela Rodolico
- Institute of Otorhinolaryngology, Università Cattolica Del Sacro Cuore, Fondazione Policlinico “A Gemelli”, IRCCS, Rome, Italy
| | - Giulia Maria Amorelli
- Department of Ophthalmology, Gemelli Foundation IRCSS, Catholic University of the Sacred Heart, Rome, Italy
- National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of Low Vision Patients, IAPB Italia Onlus- Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - Lorenzo Orazi
- Department of Ophthalmology, Gemelli Foundation IRCSS, Catholic University of the Sacred Heart, Rome, Italy
| | - Maria Petrianni
- Department of Ophthalmology, Gemelli Foundation IRCSS, Catholic University of the Sacred Heart, Rome, Italy
| | - Daniela Ricci
- Department of Ophthalmology, Gemelli Foundation IRCSS, Catholic University of the Sacred Heart, Rome, Italy
| | - Antonio Lanzone
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Maurizio Sanguinetti
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Microbiologia, Università Cattolica Del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Paola Cattani
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Microbiologia, Università Cattolica Del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Francesca Raffaelli
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Michela Sali
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Microbiologia, Università Cattolica Del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Giuseppe Zampino
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Giovanni Vento
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Piero Valentini
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
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Choe G, Park SK, Kim BJ. Hearing loss in neonates and infants. Clin Exp Pediatr 2023; 66:369-376. [PMID: 36634668 PMCID: PMC10475863 DOI: 10.3345/cep.2022.01011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 01/10/2023] Open
Abstract
Hearing in neonates and infants is crucial for their development of language and communication skills. Unless hearing loss is appropriately managed early, it can cause a significant socioeconomic burden considering its detrimental impact on the child's development and its common nature. It is also the most common congenital sensory deficit, with an approximate incidence of 1.5 per 1,000 newborns. Its etiologies are heterogeneous: genetic causes are reportedly involved in up to 80% of cases, while congenital cytomegalovirus infection is the leading environmental factor contributing to congenital hearing loss. The introduction of newborn hearing screening using automated auditory brainstem response and/or automated otoacoustic emission in many developed countries has helped detect and manage hearing loss early. Current auditory rehabilitation options such as cochlear implantation implementing cutting-edge technologies can treat almost all degrees of hearing loss, emphasizing the importance of early hearing detection and intervention. Rapidly developing genetic diagnostic technologies and future cutting-edge treatment options, including gene therapy, will shed light on the future management of hearing loss in neonates and infants.
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Affiliation(s)
- Goun Choe
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - Su-Kyoung Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Bong Jik Kim
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
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Al-Ani RM. Various aspects of hearing loss in newborns: A narrative review. World J Clin Pediatr 2023; 12:86-96. [PMID: 37342452 PMCID: PMC10278076 DOI: 10.5409/wjcp.v12.i3.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/22/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
Hearing loss is considered the most common birth defect. The estimated prevalence of moderate and severe hearing loss in a normal newborn is 0.1%-0.3%, while the prevalence is 2%-4% in newborns admitted to the newborn intensive care unit. Neonatal hearing loss can be congenital (syndromic or non-syndromic) or acquired such as ototoxicity. In addition, the types of hearing loss can be conductive, sensorineural, or mixed. Hearing is vital for the acquisition of language and learning. Therefore, early detection and prompt treatment are of utmost importance in preventing the unwanted sequel of hearing loss. The hearing screening program is mandatory in many nations, especially for high-risk newborns. An automated auditory brainstem response test is used as a screening tool in newborns admitted to the newborn intensive care unit. Moreover, genetic testing and screening for cytomegalovirus in newborns are essential in identifying the cause of hearing loss, particularly, mild and delayed onset types of hearing loss. We aimed to update the knowledge on the various aspects of hearing loss in newborns with regard to the epidemiology, risk factors, causes, screening program, investigations, and different modalities of treatment.
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Affiliation(s)
- Raid M Al-Ani
- Department of Surgery/Otolaryngology, University of Anbar, College of Medicine, Ramadi 31001, Anbar, Iraq
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Identification of Target Proteins Involved in Cochlear Hair Cell Progenitor Cytotoxicity following Gentamicin Exposure. J Clin Med 2022; 11:jcm11144072. [PMID: 35887836 PMCID: PMC9319054 DOI: 10.3390/jcm11144072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/30/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Given the non-labile, terminal differentiation of inner-ear sensory cells, preserving their function is critical since sensory cell damage results in irreversible hearing loss. Gentamicin-induced cytotoxicity is one of the major causes of sensory cell damage and consequent sensorineural hearing loss. However, the precise molecular mechanisms and target proteins involved in ototoxicity are still unknown. The objective of the present study was to identify target proteins involved in gentamicin-induced cytotoxicity to better characterize the molecular pathways involved in sensory cell damage following ototoxic drug administration using House Ear Institute-Organ of Corti 1 (HEI-OC1) cells and high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS). We identified several unique proteins involved in gentamicin-induced cytotoxicity, expression of which were further confirmed using confocal microscopy. Further investigation of these pathways can inform the design and discovery of novel treatment modalities to prevent sensory cell damage and preserve their function.
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