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Isa HM, Khudhair ZA, Abdulla KM, Idrees ZA, Busehail MY, Jawad ZA. Johanson-Blizzard Syndrome: A Case Report From Bahrain With a Literature Review. Cureus 2024; 16:e55969. [PMID: 38606259 PMCID: PMC11007587 DOI: 10.7759/cureus.55969] [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: 03/07/2024] [Indexed: 04/13/2024] Open
Abstract
Johanson-Blizzard syndrome (JBS) is a rare hereditary autosomal recessive disorder caused by a mutation in the ubiquitin protein ligase E3 component n-recognin 1 (UBR1) gene. This syndrome is characterized by the following typical clinical features: hypoplasia or aplasia of the alae nasi, congenital scalp defects, sensorineural hearing loss, hypothyroidism, growth retardation, psychomotor retardation, imperforate anus, genitourinary anomalies, and atypical hair patterns. Here, we describe a case of a 12-year-old girl with JBS of consanguineous parents. During the last trimester of pregnancy, a congenital abnormality affecting the nose was detected. Immediately after birth, the clinical examination revealed dysmorphic features in the form of hypoplastic alae nasi, microcephaly, mild hypotelorism, and cutis aplasia on the scalp. The genetic testing of the patient showed a novel sequence change mutation of the UBR1 gene (1bp duplication causing a frameshift), while both parents were carriers for this mutation. Moreover, a diagnosis of pancreatic insufficiency and subclinical hypothyroidism was made based on clinical presentation and laboratory results. The patient was started on pancreatic enzyme replacement therapy and fat-soluble vitamins, minerals, and antioxidant syrup. Further assessment revealed hypotonia, growth impairment, delay in reaching developmental milestones, and bilateral profound sensorineural hearing loss, which was managed with bilateral cochlear implantation. In addition, the patient underwent multiple craniofacial reconstructive surgeries. This case report highlights the importance of early diagnosis and multidisciplinary care of patients with JBS.
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Affiliation(s)
- Hasan M Isa
- Department of Pediatrics, Arabian Gulf University, Manama, BHR
- Department of Pediatrics, Salmaniya Medical Complex, Manama, BHR
| | | | | | - Zahra A Idrees
- Department of Otolaryngology, Salmaniya Medical Complex, Manama, BHR
| | | | - Zainab A Jawad
- Department of Pediatrics, Salmaniya Medical Complex, Manama, BHR
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2
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Alter NE, Introcaso K, Nunez C, Roach L, Ostrower ST. Pediatric Cochlear Implants in the Chudley-McCullough Syndrome: A Report of Two Cases. Cureus 2024; 16:e55440. [PMID: 38567212 PMCID: PMC10986770 DOI: 10.7759/cureus.55440] [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: 03/03/2024] [Indexed: 04/04/2024] Open
Abstract
Chudley-McCullough syndrome (CMS) is a rare autosomal recessive disorder characterized by sensorineural hearing loss and cerebral abnormalities, including ventriculomegaly and partial dysgenesis of the corpus callosum. CMS is caused by two inactivating mutations of the G protein signaling modulator 2 (GPSM2), which maintains inner hair cell polarity and spindle orientation. Since its initial description, CMS has been reported approximately 30 times in the medical literature with several individuals undergoing cochlear implantation to restore their hearing. Interestingly, within the past two years, we encountered two cases of CMS in our hospital, which primarily serves patients within a 30-mile radius. To our knowledge, the literature has yet to evaluate two unrelated cases of CMS occurring in such close succession. This case report describes two successful cases of bilateral cochlear implantation in two children with CMS. Notably, these individuals have no family history of consanguinity or prior hearing loss.
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Affiliation(s)
- Noah E Alter
- Department of Medical Education, Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Davie, USA
| | - Kailey Introcaso
- Department of Audiology, Joe DiMaggio Children's Hospital, Hollywood, USA
| | - Cathy Nunez
- Department of Speech-Language Pathology, Joe DiMaggio Children's Hospital, Hollywood, USA
| | - Leonor Roach
- Department of Audiology, Joe DiMaggio Children's Hospital, Hollywood, USA
| | - Samuel T Ostrower
- Department of Pediatric Otolaryngology, Joe Dimaggio Children's Hospital, Hollywood, USA
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3
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Sargazi M, Dehghani S, Dahmardeh M, Mohammadi SO. Ocular Manifestations of Alport Syndrome: Report and Comparison of Two Cases. Cureus 2023; 15:e47373. [PMID: 38022159 PMCID: PMC10657510 DOI: 10.7759/cureus.47373] [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: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
We report two cases of Alport syndrome and compare the clinical presentations and imaging findings in these cases. The clinical examination consisted of best-corrected visual acuity (BCVA), direct ophthalmoscopy, and slit-lamp examination. Macular optical coherence tomography (OCT) and anterior segment OCT (AS-OCT) and were utilized to document the details of the anterior and posterior segment pathologies. In order to evaluate systemic presentations of Alport syndrome, nephrology, and otolaryngology were consulted for each patient. In this study, the first case was a 27-year-old female with progressive myopia, anterior lenticonus, and temporal retinal thinning found in the ocular examination that led to the diagnosis of Alport syndrome. She underwent clear lens extraction and intraocular lens implantation, restoring acceptable visual acuity. The second case was a 20-year-old male patient with low visual acuity, severe bilateral anterior lenticonus, bilateral cataract, and temporal retinal thinning. The patient later developed renal failure and is a candidate for kidney transplantation. In this case report, progressive renal failure, hearing loss, and ocular abnormalities were all observed. This is consistent with previously reported cases given the typical characteristics of Alport syndrome, a rare inherited disease. The severity of those characteristics was higher in the male subject, a finding also consistent with prior reports indicating that males are usually affected more frequently and more severely than females, given that Alport syndrome is generally inherited as an X-linked disorder. Additionally, anterior segment and macular OCTs seemed to be of considerable significance in the early diagnosis of Alport syndrome given the typical ocular manifestations e.g. anterior lenticonus or temporal retinal atrophy.
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Affiliation(s)
- Meisam Sargazi
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Shima Dehghani
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Mina Dahmardeh
- Ophthalmology, Zahedan University of Medical Sciences, Zahedan, IRN
| | - Seyed Omid Mohammadi
- Ophthalmology, Burnett School of Medicine at Texas Christian University, Fort Worth, USA
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Huang J, Xie G, Chen J, Huang Y. A case report of superficial siderosis of the central nervous system and literature review. J Int Med Res 2023; 51:3000605231198389. [PMID: 37702555 PMCID: PMC10501075 DOI: 10.1177/03000605231198389] [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: 03/23/2023] [Accepted: 08/14/2023] [Indexed: 09/14/2023] Open
Abstract
Superficial siderosis of the central nervous system (SSCNS) is a rare disease characterized by iron deposition on the tissue surface of the middle axis system. We report the case of a man in his late 40 s who was admitted to the hospital with ataxia. A physical examination revealed cerebellar ataxia, sensorineural deafness, and bilateral pyramidal tract injury. Susceptibility-weighted magnetic resonance imaging showed linear hypointense signals on the surface of the cerebral hemispheres, sulcus gyrus, lateral ventricles, and cerebellum. The patient underwent treatment with deferiprone, mecobalamin, and vitamin B1, and the symptoms were not aggravated. The patient's daily living ability was near normal after 1 year of follow-up. A literature review indicated that most SSCNS patients present diverse clinical manifestations. Clinicians may consider SSCNS in patients with hearing impairment and gait ataxia, especially for those receiving anticoagulant therapy and with a history of brain injury or accident.
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Affiliation(s)
- Jian Huang
- Department of Neurology, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Gaosheng Xie
- Department of Neurology, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | | | - Ying Huang
- Department of Neurology, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Gannan Branch Center of the National Geriatric Disease Clinical Medical Research Center, Gannan Medical University, Ganzhou, China
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5
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Fu Y, Zhao Z, Zheng J, Zhu Y, Sun L. Gene Screening for Non-Syndromic Deafness in Hainanese Patients. J Int Adv Otol 2023; 19:283-287. [PMID: 37528592 PMCID: PMC10544452 DOI: 10.5152/iao.2023.21582] [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: 10/09/2021] [Accepted: 10/21/2022] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND Hainan Province is the southernmost island in China, far from the mainland, and the resident population changes little. In order to understand the mutation spectrum in Hainan and provide effective genetic counseling for deaf people, we carried out genetic analysis on the non-comprehensive hearing impairment in this population. Therefore, in this study, 183 children with moderate sensorineural deafness in the northeast of Hainan were analyzed with susceptibility gene carrying and gene mutation, providing some reference for hainan to guide the prevention and treatment of deafness. METHODS Complete clinical evaluations were performed on 183 unrelated patients with a non-syndromic hearing impairment from Hainan Province. Each subject was screened for common mutations using the matrix-assisted laser desorption ionization-time of flight mass spectrometry, including GJB2 c.35delG,c.235delC,c.299_300del AT,c.176_191del16,c.167delT; GJB3 c.538 C>T,c.547G >A;SLC26A4 IVS7-2 A>G,c.2168 A>G,c.1174A>T,c.1229 C>T,c.1226G>A,c.1975G>C,c.2027T>A,c.2162C>T,c.281C>T,c.589G>A,IVS15+5G>A; and mtRNA 1494 C>T,1555 A>G. RESULTS Genetic analysis showed that GJB2, SLC26A4, and mitochondrial M. 1555A > G mutations accounted for 7.10%, 8.74%, and 0.55% of the etiology of non-syndromic hearing impairment, respectively. Common mutations include GJB2 C. 235delC, SLC26A4 c.I vs7-2a →G, C. 2168A→G, and mitochondrial M. 1555A > G. The total mutation rate in Hainan was 16.39%. CONCLUSION Our study is the first one to carry out genetic analysis on non-syndromic hearing impairment in Hainan. The results show that in the cases of non-syndromic hearing impairment in these areas, there is a clear genetic cause accounted for 16.39%, and the mutation hot spots are mainly GJB2 and SLC26A4, and SLC26A4 is the most common mutation site. This study provides useful and targeted information for genetic counseling of deafness in people with non-syndromic hearing impairment in Hainan.
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Affiliation(s)
- Yifei Fu
- Department of ENT & HN Surgery, ainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Zhibin Zhao
- Department of ENT & HN Surgery, ainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Jing Zheng
- Department of ENT & HN Surgery, ainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yuanping Zhu
- Department of ENT & HN Surgery, ainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Liang Sun
- Department of ENT & HN Surgery, ainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
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6
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Chen Z, Luo M, Zhou C, Bie X, Yu S, Sun X. Fluid-solid coupling model and biological features of large vestibular aqueduct syndrome. Front Bioeng Biotechnol 2023; 11:1106371. [PMID: 37251559 PMCID: PMC10213941 DOI: 10.3389/fbioe.2023.1106371] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 05/03/2023] [Indexed: 05/31/2023] Open
Abstract
Objective: Computed tomography (CT) images of the temporal bone of large vestibular aqueduct syndrome (LVAS) patients were used to establish 3D numerical models based on the structure of the inner ear, which are, in turn, used to construct inner ear fluid-solid coupling models. The physiological features and pathophysiology of LVAS were analyzed from a biomechanical perspective using finite element analysis. Methods: CT images of the temporal bone were collected from five children attending the Second Hospital of Dalian Medical University in 2022. The CT images were used to build 3D models of the inner ear containing the vestibular aqueduct (VA) by Mimics and Geomagic software, and round window membrane models and fluid-solid coupling models were built by ANSYS software to perform fluid-solid coupling analysis. Results: By applying different pressure loads, the deformation of the round window membranes occurred, and their trend was basically the same as that of the load. The deformation and stress of the round window membranes increased with the increase in load. Under the same load, the deformation and stress of the round window membranes increased with the expansion of the midpoint width of the VA. Conclusion: CT images of the temporal bone used clinically could establish a complete 3D numerical model of the inner ear containing VA. Fluctuations in cerebrospinal fluid pressure could affect inner ear pressure, and VA had a limiting effect on the pressure from cerebrospinal fluid. The larger the VA, the smaller the limiting effect on the pressure.
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Affiliation(s)
- Zewen Chen
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Mengjie Luo
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Can Zhou
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xu Bie
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shen Yu
- State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, China
| | - Xiuzhen Sun
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
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7
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Deeb Y, Martini N, Ahmad YA, Alkosti M, Hamdan O. A challenging diagnosis for thiamine transporter deficiency anemia (Rogers syndrome) in two young siblings: A rare case report. Clin Case Rep 2023; 11:e7192. [PMID: 37091967 PMCID: PMC10114085 DOI: 10.1002/ccr3.7192] [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: 11/21/2022] [Revised: 03/17/2023] [Accepted: 03/27/2023] [Indexed: 04/25/2023] Open
Abstract
We present these two cases to emphasize the necessity of critical thinking and high suspicion of the disease (Rogers syndrome) to avoid potentially fatal situations due to its rarity and the importance of early treatment.
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Affiliation(s)
- Yara Deeb
- Faculty of MedicineAl Andalus UniversityQadmusSyrian Arab Republic
- Stemosis for Scientific ResearchDamascusSyrian Arab Republic
| | - Nafiza Martini
- Stemosis for Scientific ResearchDamascusSyrian Arab Republic
- Faculty of MedicineDamascus UniversityDamascusSyrian Arab Republic
| | - Yara Ahmad Ahmad
- Stemosis for Scientific ResearchDamascusSyrian Arab Republic
- Faculty of MedicineDamascus UniversityDamascusSyrian Arab Republic
| | - Marwa Alkosti
- Faculty of MedicineDamascus UniversityDamascusSyrian Arab Republic
- Pediatric University HospitalDamascusSyrian Arab Republic
| | - Othman Hamdan
- Faculty of MedicineDamascus UniversityDamascusSyrian Arab Republic
- Pediatric University HospitalDamascusSyrian Arab Republic
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8
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Kamkari N, Chari D. Labyrinthitis Ossificans in a Post-Splenectomy Patient With Meningitis: A Case Report and Review of Literature. Cureus 2023; 15:e34555. [PMID: 36879701 PMCID: PMC9985465 DOI: 10.7759/cureus.34555] [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] [Accepted: 02/02/2023] [Indexed: 02/05/2023] Open
Abstract
This report describes a case of cochlear implantation to treat profound deafness three months after a diagnosis of bacterial meningitis in a patient with a remote history of splenectomy. A 71-year-old woman with a remote history of a splenectomy over 20 years before presented with bilateral profound deafness that occurred as sequela from pneumococcal meningitis three months prior. The patient had been vaccinated against the 23-valent polysaccharide pneumococcal vaccine (PPV-23). The audiometric evaluation revealed no response in either ear. Imaging was suggestive of complete ossification of the right cochlea with partial ossification of the basal turn of the left cochlea. She underwent successful left-sided cochlear implantation. Standard post-implantation speech outcomes include consonant-nucleus-consonant (CNC) word and phoneme scores and Az-Bio in quiet and noise. The patient noted subjective improvement in her hearing. Performance measures markedly improved when compared to her pre-operative evaluation, which showed no aided sound detection. This case report highlights the possibility of meningitis many years after splenectomy that can result in profound deafness with labyrinthitis ossificans and the potential for hearing rehabilitation for cochlear implantation.
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Affiliation(s)
- Nick Kamkari
- Otolaryngology-Head and Neck Surgery, University of Massachusetts Chan Medical School, Worcester, USA
| | - Divya Chari
- Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, USA.,Otolaryngology-Head and Neck Surgery, University of Massachusetts Chan Medical School, Worcester, USA
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Beqiri-Jashari A, Janchevska A, Ahmeti I, Doksimovski F, Cipanovska M, Teov B, Stefanovska ES, Plaseska-Karanfilska D, Gucev Z. Alström Syndrome with Early Vision and Hearing Impairement. Pril (Makedon Akad Nauk Umet Odd Med Nauki) 2022; 43:159-162. [PMID: 35843912 DOI: 10.2478/prilozi-2022-0028] [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: 06/15/2023]
Abstract
Alström syndrome (ALMS) is an autosomal recessive disorder characterized by multiple organ involvement, including progressive cone-rod dystrophy, sensorineural hearing loss, childhood obesity, and type 2 diabetes mellitus. Pathogenic variants in the ALMS1 gene are the known cause for the occurrence of this devastating condition. Here we report on a 12 year old boy referred to the University Clinic with early signs of impaired hearing and vision, obesity, and scoliosis. Central vision was first affected, followed by peripheral vision. In addition, his weight began increasing after the age of two years, reaching 78 kg at a height of 157 cm (BMI 31.64). No polydactyly was present. His mental development was normal in spite of his hearing and vision impairments. There was acanthosis nigricans on the neck. ECG and the cardiac ultrasound were normal. At the age of 12 years, his testicles are 12 ml and his pubertal status is P2 A2. OGTT revealed impaired glucose tolerance with elevated insulin concentrations 121ulU/mL (reference range 2,00-29,1 ulU/mL). Renal function was unaffected, liver functions were normal. Uric acid and lipids were within normal plasma concentrations. A Whole Exome Sequencing was performed and a homozygous ALMS1 pathogenic, frameshift gene variant (LRG_741t1(ALMS1):c.4156dup; p.Thr1386AsnfsTer15) was determined as the cause of the disease. Both parents were carriers for the variant. The absence of mental retardation and polydactyly differentiates Alström and Bardet-Biedle syndrome.
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Affiliation(s)
| | | | - Irfan Ahmeti
- University Clinic for Endocrinology, Diabetes and Metabolic Diseases, Medical Faculty Skopje, RN Macedonia
| | - Filip Doksimovski
- University Clinic for Paediatrics, Medical Faculty Skopje, RN Macedonia
| | - Marija Cipanovska
- University Clinic for Paediatrics, Medical Faculty Skopje, RN Macedonia
| | - Bojan Teov
- University Clinic for Paediatrics, Medical Faculty Skopje, RN Macedonia
| | - Emilija Sukarova Stefanovska
- Macedonian Academy of Sciences and Arts, Research Centre for Genetic Engineering and Biotechnology "Georgi D. Efremov", Skopje, Skopje Macedonia
| | - Dijana Plaseska-Karanfilska
- Macedonian Academy of Sciences and Arts, Research Centre for Genetic Engineering and Biotechnology "Georgi D. Efremov", Skopje, Skopje Macedonia
| | - Zoran Gucev
- University Clinic for Paediatrics, Medical Faculty Skopje, RN Macedonia
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10
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He Z, Kong W, Zou S, Huang H, Sha S. Editorial: Hearing Loss: From Pathogenesis to Treatment. Front Cell Neurosci 2022; 16:907483. [PMID: 35755783 PMCID: PMC9231520 DOI: 10.3389/fncel.2022.907483] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zuhong He
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Weijia Kong
- Department of Cell and Molecular Biology, Brain Institute, Tulane University, New Orleans, LA, United States
| | - Shengyu Zou
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hai Huang
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Suhua Sha
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
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11
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Rigoli L, Caruso V, Salzano G, Lombardo F. Wolfram Syndrome 1: From Genetics to Therapy. Int J Environ Res Public Health 2022; 19:3225. [PMID: 35328914 DOI: 10.3390/ijerph19063225] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 02/01/2023]
Abstract
Wolfram syndrome 1 (WS1) is a rare neurodegenerative disease transmitted in an autosomal recessive mode. It is characterized by diabetes insipidus (DI), diabetes mellitus (DM), optic atrophy (OA), and sensorineural hearing loss (D) (DIDMOAD). The clinical picture may be complicated by other symptoms, such as urinary tract, endocrinological, psychiatric, and neurological abnormalities. WS1 is caused by mutations in the WFS1 gene located on chromosome 4p16 that encodes a transmembrane protein named wolframin. Many studies have shown that wolframin regulates some mechanisms of ER calcium homeostasis and therefore plays a role in cellular apoptosis. More than 200 mutations are responsible for WS1. However, abnormal phenotypes of WS with or without DM, inherited in an autosomal dominant mode and associated with one or more WFS1 mutations, have been found. Furthermore, recessive Wolfram-like disease without DM has been described. The prognosis of WS1 is poor, and the death occurs prematurely. Although there are no therapies that can slow or stop WS1, a careful clinical monitoring can help patients during the rapid progression of the disease, thus improving their quality of life. In this review, we describe natural history and etiology of WS1 and suggest criteria for a most pertinent approach to the diagnosis and clinical follow up. We also describe the hallmarks of new therapies for WS1.
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12
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Tsetsos N, Poutoglidis A, Vlachtsis K, Kilmpasanis A, Gougousis S. Sudden Sensorineural Hearing Loss Following the Second Dose of COVID-19 Vaccine. Cureus 2021; 13:e17435. [PMID: 34589343 PMCID: PMC8462391 DOI: 10.7759/cureus.17435] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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] [Accepted: 08/25/2021] [Indexed: 11/29/2022] Open
Abstract
Sudden sensorineural hearing loss (SSHL) is a common otolaryngology emergency that significantly affects the patient's quality of life. Although in most cases its etiology remains unknown (idiopathic SSHL), viral infections and vascular compromise constitute the most widely accepted etiopathogenic mechanisms. Specifically, occlusion of the internal auditory artery has been reported in cases of sudden deafness. Thrombotic events following the Oxford-AstraZeneca COVID-19 vaccine are rare. There have been reports of SSHL following immunization with Pfizer and Moderna COVID-19 vaccine; however, no etiologic relationship has been established between the two entities yet. We present a unique case of SSHL following the second dose of the Oxford-AstraZeneca COVID-19 vaccine. A 61-year-old female was referred to our department with a four-day history of the right-sided sense of fulness combined with almost complete hearing loss that had started two days after the second dose of Oxford-AstraZeneca COVID-19 vaccine. Pure tone audiometry showed profound right-sided sensorineural hearing loss. Magnetic resonance imaging of the brain and internal auditory canal and magnetic resonance angiography were both normal. The combination of glucocorticoids and acetylsalicylic acid leads to almost full recovery 15 days after deafness. The COVID-19 era is full of new challenges and clinical dilemmas. In our case, the addition of acetylosalicid acid to the patient's initial treatment may have contributed to the hearing restoration; however, this fact will remain a hypothesis.
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Affiliation(s)
- Nikolaos Tsetsos
- Department of Otorhinolaryngology - Head and Neck Surgery, "G. Papanikolaou" General Hospital, Thessaloniki, GRC
| | - Alexandros Poutoglidis
- Department of Otorhinolaryngology - Head and Neck Surgery, "G. Papanikolaou" General Hospital, Thessaloniki, GRC
| | - Konstantinos Vlachtsis
- Department of Otorhinolaryngology - Head and Neck Surgery, "G. Papanikolaou" General Hospital, Thessaloniki, GRC
| | - Adamantios Kilmpasanis
- Department of Otorhinolaryngology - Head and Neck Surgery, "G. Papanikolaou" General Hospital, Thessaloniki, GRC
| | - Spyridon Gougousis
- Department of Otorhinolaryngology - Head and Neck Surgery, "G. Papanikolaou" General Hospital, Thessaloniki, GRC
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13
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Sherif M, Demirbilek H, Çayır A, Tahir S, Çavdarlı B, Demiral M, Cebeci AN, Vurallı D, Rahman SA, Unal E, Büyükyılmaz G, Baran RT, Özbek MN, Hussain K. Identification of Three Novel and One Known Mutation in the WFS1 Gene in Four Unrelated Turkish Families: The Role of Homozygosity Mapping in the Early Diagnosis. J Clin Res Pediatr Endocrinol 2021; 13:34-43. [PMID: 32938580 PMCID: PMC7947724 DOI: 10.4274/jcrpe.galenos.2020.2020.0152] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE Bi-allelic mutations in the wolframin gene (WFS1) cause Wolfram syndrome 1 (WS1 or DIDMOAD) characterized by nonautoimmune diabetes mellitus, optic atrophy, diabetes insipidus, sensorineural deafness, urinary tract abnormalities, and neuropsychiatric disorders. Patients presenting with an incomplete phenotype of WS1 were evaluated using homozygosity mapping and subsequent whole-exome sequencing. METHODS Four unrelated consanguineous Turkish families, including seven affected children, and their unaffected parents and siblings were evaluated. Homozygosity mapping was performed, followed by whole-exome sequencing of WFS1. Mutations were classified according to results of “in silico” analyses, protein prediction, and functional consequences. RESULTS Homozygosity mapping confirmed shared homozygous regions on chromosome 4 (chr4p16.1) between the affected individuals, that was absent in their unaffected siblings. Exome sequencing identified three novel (c.1215T>A, c.554G>A, c.1525_1540dup) and one known (c.1522_1523delTA) mutations in WFS1. All mutations were predicted to cause stop codon leading to early termination of protein synthesis and complete loss-of-function. All patients were found to be homozygous for the change, with parents and other unaffected siblings being carriers. CONCLUSION Our study expands the mutation spectrum of WSF1 mutations with three novel mutations. Homozygosity mapping may provide enrichment for molecular genetic analysis and early diagnosis of WS1 patients with incomplete phenotype, particularly in consanguineous pedigrees.
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Affiliation(s)
- Maha Sherif
- University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom
| | - Hüseyin Demirbilek
- University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom,Diyarbakır Children’s Hospital, Clinic of Paediatric Endocrinology, Diyarbakır, Turkey,Hacettepe University Faculty of Medicine, Department of Pediatric Endocrinology, Ankara, Turkey,* Address for Correspondence: University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom; Diyarbakır Children’s Hospital, Clinic of Paediatric Endocrinology, Diyarbakır; Hacettepe University Faculty of Medicine, Department of Pediatric Endocrinology, Ankara, Turkey Phone: +90 543 370 54 91 E-mail:
| | - Atilla Çayır
- Regional Training and Research Hospital, Clinic of Paediatric Endocrinology, Erzurum, Turkey
| | - Sophia Tahir
- University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom
| | - Büşra Çavdarlı
- Ankara City Hospital, Clinic of Medical Genetics, Ankara, Turkey
| | - Meliha Demiral
- Gazi Yaşargil Training and Research Hospital, Clinic of Pediatric Endocrinology, Diyarbakır, Turkey
| | - Ayşe Nurcan Cebeci
- Derince Training and Research Hospital, Clinic of Paediatric Endocrinology, Kocaeli, Turkey
| | - Doğuş Vurallı
- Hacettepe University Faculty of Medicine, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Sofia Asim Rahman
- University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom
| | - Edip Unal
- Gazi Yaşargil Training and Research Hospital, Clinic of Pediatric Endocrinology, Diyarbakır, Turkey
| | - Gönül Büyükyılmaz
- Ankara City Hospital, Clinic of Pediatric Endocrinology, Ankara, Turkey
| | - Riza Taner Baran
- Diyarbakır Children’s Hospital, Clinic of Paediatric Endocrinology, Diyarbakır, Turkey
| | - Mehmet Nuri Özbek
- Diyarbakır Children’s Hospital, Clinic of Paediatric Endocrinology, Diyarbakır, Turkey,Gazi Yaşargil Training and Research Hospital, Clinic of Pediatric Endocrinology, Diyarbakır, Turkey
| | - Khalid Hussain
- University College London, Institute of Child Health, Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, London, United Kingdom,Sidra Medicine, Department of Pediatrics, Division of Endocrinology, Doha, Qatar
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Dupont J, Vieira JP, Tavares ALT, Conceição CR, Khan S, Bertoli-Avella AM, Sousa AB. Adding evidence to the role of NEUROG1 in congenital cranial dysinnervation disorders. Clin Genet 2021; 99:588-593. [PMID: 33439489 DOI: 10.1111/cge.13922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/11/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 11/28/2022]
Abstract
Congenital cranial dysinnervation disorders (CCDDs) are a heterogeneous group of neurodevelopmental phenotypes caused by a primary disturbance of innervation due to deficient, absent, or misguided cranial nerves. Although some CCDDs genes are known, several clinical phenotypes and their aetiologies remain to be elucidated. We describe a 12-year-old boy with hypotonia, developmental delay, sensorineural hearing loss, and keratoconjunctivitis due to lack of corneal reflex. He had a long expressionless face, severe oromotor dysfunction, bilateral agenesis/severe hypoplasia of the VIII nerve with marked atresia of the internal auditory canals and cochlear labyrinth malformation. Trio-exome sequencing identified a homozygous loss of function variant in the NEUROG1 gene (NM_006161.2: c.202G > T, p.Glu68*). NEUROG1 is considered a causal candidate for CCDDs based on (i) the previous report of a patient with a homozygous gene deletion and developmental delay, deafness due to absent bilateral VIII nerves, and severe oromotor dysfunction; (ii) a second patient with a homozygous NEUROG1 missense variant and corneal opacity, absent corneal reflex and intellectual disability; and (iii) the knockout mouse model phenotype which highly resembles the disorder observed in humans. Our findings support the growing compelling evidence that loss of NEUROG1 leads to a very distinctive disorder of cranial nerves development.
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Affiliation(s)
- Juliette Dupont
- Genetics Department, Hospital de Santa Maria, Centro Hospitalar Universitário de Lisboa Norte, Lisbon, Portugal
| | - José Pedro Vieira
- Neurology Department, Hospital de Dona Estefânia, Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Ana Lisa Taylor Tavares
- East Anglian Medical Genetics Service, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.,Department of Health, Genomics England, Queen Mary University of London, Charterhouse Square, London, UK
| | - Carla Ribeiro Conceição
- Neuroradiology Department, Hospital de Dona Estefânia, Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Suliman Khan
- Research Data Analysis, CENTOGENE AG, Rostock, Germany
| | | | - Ana Berta Sousa
- Genetics Department, Hospital de Santa Maria, Centro Hospitalar Universitário de Lisboa Norte, Lisbon, Portugal.,Laboratório de Imunologia Básica, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
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15
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Kishi H, Jojima T, Kogai T, Iijima T, Ohira E, Tanuma D, Konno S, Kato K, Kezuka A, Akimoto K, Sakumoto J, Hishinuma A, Tomaru T, Makita N, Usui I, Aso Y. A case of hypoparathyroidism, deafness, and renal dysplasia (HDR) syndrome with a novel frameshift variant in GATA3, p.W10Cfs40, lacks kidney malformation. Clin Case Rep 2020; 8:2619-2624. [PMID: 33363791 PMCID: PMC7752573 DOI: 10.1002/ccr3.3186] [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: 01/25/2020] [Revised: 06/08/2020] [Accepted: 06/22/2020] [Indexed: 11/11/2022] Open
Abstract
Autosomal dominant hypoparathyroidism, deafness, and renal dysplasia (HDR) syndrome are typically diagnosed by manifestations of the three features with a positive family history. Our case carried a de novo variant in causative gene, GATA3, but presenting no renal dysplasia or family history. The phenotypic heterogeneity raises a caution for diagnosis.
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Affiliation(s)
- Haruka Kishi
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Teruo Jojima
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Takahiko Kogai
- Department of Infection Control and Clinical Laboratory MedicineDokkyo Medical University MibuShimotsuga, TochigiJapan
| | - Toshie Iijima
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Eriko Ohira
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Dai Tanuma
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Sachiyo Konno
- Center of Medical UltrasonicsDokkyo Medical University MibuShimotsuga, TochigiJapan
| | - Kanako Kato
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Atsumi Kezuka
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Kazumi Akimoto
- Division of Clinical ScienceResearch Support CenterDokkyo Medical University MibuShimotsuga, TochigiJapan
| | - Junko Sakumoto
- Department of Infection Control and Clinical Laboratory MedicineDokkyo Medical University MibuShimotsuga, TochigiJapan
| | - Akira Hishinuma
- Department of Infection Control and Clinical Laboratory MedicineDokkyo Medical University MibuShimotsuga, TochigiJapan
| | - Takuya Tomaru
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Noriko Makita
- Department of Nephrology and EndocrinologyThe University of TokyoTokyoJapan
| | - Isao Usui
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
| | - Yoshimasa Aso
- Department of Endocrinology and MetabolismDokkyo Medical UniversityMibu, TochigiJapan
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16
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Koumangoye R, Bastarache L, Delpire E. NKCC1: Newly Found as a Human Disease-Causing Ion Transporter. Function (Oxf) 2020; 2:zqaa028. [PMID: 33345190 PMCID: PMC7727275 DOI: 10.1093/function/zqaa028] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 09/14/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 01/06/2023] Open
Abstract
Among the electroneutral Na+-dependent chloride transporters, NKCC1 had until now evaded identification as a protein causing human diseases. The closely related SLC12A transporters, NKCC2 and NCC have been identified some 25 years ago as responsible for Bartter and Gitelman syndromes: two renal-dependent salt wasting disorders. Absence of disease was most surprising since the NKCC1 knockout mouse was shown in 1999 to be viable, albeit with a wide range of deleterious phenotypes. Here we summarize the work of the past 5 years that introduced us to clinical cases involving NKCC1. The most striking cases are of 3 children with inherited mutations, who have complete absence of NKCC1 expression. These cases establish that lack of NKCC1 causes deafness; CFTR-like secretory defects with mucus accumulation in lung and intestine; severe xerostomia, hypotonia, dysmorphic facial features, and severe neurodevelopmental disorder. Another intriguing case is of a patient with a dominant deleterious SLC12A2 allele. This de novo mutation introduced a premature stop codon leading to a truncated protein. This mutant transporter seems to exert dominant-negative effect on wild-type transporter only in epithelial cells. The patient who suffers from lung, bladder, intestine, pancreas, and multiple endocrine abnormalities has, however, normal hearing and cognition. Finally, new reports substantiate the haploinsufficiency prediction of the SLC12A2 gene. Cases with single allele mutations in SLC12A2 have been linked to hearing loss and neurodevelopmental disorders.
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Affiliation(s)
- Rainelli Koumangoye
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Lisa Bastarache
- Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA,Corresponding author. E-mail:
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Ozon ZA, Alikasifoglu A, Kandemir N, Aydin B, Gonc EN, Karaosmanoglu B, Celik NB, Eroglu-Ertugrul NG, Taskiran EZ, Haliloglu G, Oguz KK, Kiper PO, Yalnizoglu D, Utine GE, Alikasifoglu M. Novel insights into diabetes mellitus due to DNAJC3-defect: Evolution of neurological and endocrine phenotype in the pediatric age group. Pediatr Diabetes 2020; 21:1176-1182. [PMID: 32738013 DOI: 10.1111/pedi.13098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/11/2020] [Accepted: 07/24/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND A number of inborn errors of metabolism caused by abnormal protein trafficking that lead to endoplasmic reticulum storage diseases (ERSD) have been defined in the last two decades. One such disorder involves biallelic mutations in the gene encoding endoplasmic reticulum resident co-chaperone DNAJC3 (P58IPK ) that leads to diabetes in the second decade of life, in addition to multiple endocrine dysfunction and nervous system involvement. OBJECTIVE The aim of this study was to define the natural history of this new form of diabetes, especially the course of abnormalities related to glucose metabolism. METHODS Whole-exome and Sanger sequencing was used to detect DNAJC3 defect in two patients. Detailed analysis of their clinical history as well as biochemical, neurological and radiological studies were carried out to deduce natural history of neurological and endocrine phenotype. RESULTS DNAJC3 defect led to beta-cell dysfunction causing hyperinsulinemichypoglycemia around 2 years of age in both patients, which evolved into diabetes with insulin deficiency in the second decade of life, probably due to beta cell loss. Endocrine phenotype involved severe early-onset growth failure due to growth hormone deficiency, and hypothyroidism of central origin. Neurological phenotype involved early onset sensorineural deafness discovered around 5 to 6 years, and neurodegeneration of central and peripheral nervous system in the first two decades of life. CONCLUSION Biallelic loss-of-function in the ER co-chaperone DNAJC3 leads to a new form of diabetes with early onset hyperinsulinemic hypoglycemia evolving into insulin deficiency as well as severe growth failure, hypothyroidism and diffuse neurodegeneration.
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Affiliation(s)
- Z Alev Ozon
- Department of Pediatrics, Division of Endocrinology, Hacettepe University, Ankara, Turkey
| | - Ayfer Alikasifoglu
- Department of Pediatrics, Division of Endocrinology, Hacettepe University, Ankara, Turkey
| | - Nurgun Kandemir
- Department of Pediatrics, Division of Endocrinology, Hacettepe University, Ankara, Turkey
| | - Busra Aydin
- Department of Medical Genetics, Hacettepe University, Ankara, Turkey
| | - E Nazli Gonc
- Department of Pediatrics, Division of Endocrinology, Hacettepe University, Ankara, Turkey
| | | | - Nur Berna Celik
- Department of Pediatrics, Division of Endocrinology, Hacettepe University, Ankara, Turkey
| | | | - Ekim Z Taskiran
- Department of Medical Genetics, Hacettepe University, Ankara, Turkey
| | - Goknur Haliloglu
- Department of Pediatrics, Division of Neurology, Hacettepe University, Ankara, Turkey
| | | | - Pelin Ozlem Kiper
- Department of Pediatrics, Division of Genetics, Hacettepe University, Ankara, Turkey
| | - Dilek Yalnizoglu
- Department of Pediatrics, Division of Neurology, Hacettepe University, Ankara, Turkey
| | - Gulen Eda Utine
- Department of Pediatrics, Division of Genetics, Hacettepe University, Ankara, Turkey
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Patil SJ, Karthik GA, Bhavani GS, Bhat V, Matalia J, Shah J, Shukla A, Girisha KM. Bosley-Salih-Alorainy syndrome in patients from India. Am J Med Genet A 2020; 182:2699-2703. [PMID: 32864817 DOI: 10.1002/ajmg.a.61809] [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: 05/04/2019] [Revised: 02/05/2020] [Accepted: 07/20/2020] [Indexed: 11/07/2022]
Abstract
Bi-allelic HOXA1 pathogenic variants clinically manifest as two distinct syndromes, Bosley-Salih-Alorainy syndrome (BSAS) and Athabascan brainstem dysgenesis syndrome, mainly reported in two different populations from Saudi Arabia and southwest North America, respectively. Here we report two siblings of Indian origin with BSAS phenotype caused by a novel homozygous exon 2 HOXA1 pathogenic variants.
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Affiliation(s)
- Siddaramappa J Patil
- Division of Medical Genetics, Mazumdar Shaw Medical Center, Narayana Hrudayalaya Hospitals, Bangalore, India
| | | | - Gandham SriLakshmi Bhavani
- Department of Medical Genetics, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - Venkatraman Bhat
- Department of Radiology, Mazumdar Shaw Medical Center, Narayana Hrudayalaya Hospitals, Bangalore, India
| | - Jyoti Matalia
- Department of Pediatric Ophthalmology & Strabismology, Narayana Nethralaya, Bangalore, India
| | - Jhanvi Shah
- Division of Medical Genetics, Mazumdar Shaw Medical Center, Narayana Hrudayalaya Hospitals, Bangalore, India
| | - Anju Shukla
- Department of Medical Genetics, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - Katta Mohan Girisha
- Department of Medical Genetics, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
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Wang M, Li Q, Deng A, Zhu X, Yang J. Identification of a novel mutation in CRYM in a Chinese family with hearing loss using whole-exome sequencing. Exp Ther Med 2020; 20:1447-1454. [PMID: 32742378 PMCID: PMC7388290 DOI: 10.3892/etm.2020.8890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/23/2019] [Accepted: 05/07/2020] [Indexed: 12/26/2022] Open
Abstract
Previous studies have identified ~50 genes that contribute to non-syndromic autosomal dominant sensorineural deafness (DFNA). However, in numerous families with hearing loss, the specific gene mutation remains to be identified. In the present study, the clinical characteristics and gene mutations were analyzed in a Chinese pedigree with hereditary hearing loss. The clinical characteristics of the family members were assessed and a detailed audiology function examination was performed. Whole-exome sequencing (WES) was performed to identify the gene mutation responsible for the hearing loss. Sanger sequencing was used to verify the candidate mutation detected in the family. The family consisted of 31 members, seven of whom were diagnosed with sensorineural deafness of varying degrees. No mutation was identified by the general deafness gene chip. However, a novel heterozygous mutation in exon 3 (c.152C>T; Pro51Leu) of the gene crystallin µ (CRYM) was identified by WES. This result was further verified by Sanger sequencing. Co-segregation of genotypes and phenotypes suggested that this novel mutation was instrumental for the hearing loss/DFNA. In conclusion, the present study identified a novel pathogenic mutation, NM_001888.5(CRYM): c.152C>T(Pro51Leu), associated with DFNA. This mutation has not been reported previously and further functional studies are warranted.
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Affiliation(s)
- Min Wang
- Department of Otorhinolaryngology and Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing 400037, P.R. China
| | - Qian Li
- Department of Otorhinolaryngology and Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing 400037, P.R. China
| | - Anchun Deng
- Department of Otorhinolaryngology and Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing 400037, P.R. China
| | - Xianbai Zhu
- Department of Otorhinolaryngology and Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing 400037, P.R. China
| | - Junjie Yang
- Department of Otorhinolaryngology and Head and Neck Surgery, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing 400037, P.R. China
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20
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Yu S, Chen WX, Lu W, Chen C, Ni Y, Duan B, Wang B, Wang H, Xu ZM. Novel heterozygous GATA3 and SLC34A3 variants in a 6-year-old boy with Barakat syndrome and hypercalciuria. Mol Genet Genomic Med 2020; 8:e1222. [PMID: 32155322 PMCID: PMC7216807 DOI: 10.1002/mgg3.1222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 12/19/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 01/14/2023] Open
Abstract
Background Barakat syndrome is an autosomal dominant disorder characterized by the triad of hypoparathyroidism, sensorineural deafness, and renal anomalies and is caused by mutations in GATA3 gene. SLC34A3 is the cause gene of hypophosphatemic rickets with hypercalciuria, and heterozygous carriers may have milder clinical symptoms. The aim of this study was to identify the underlying genetic cause of a patient who initially presented with renal failure, hypercalciuria, kidney stone, and bilateral sensorineural deafness. Methods A 6‐year‐old boy with complex clinical presentations was investigated. Comprehensive medical evaluations were performed including auditory function tests, endocrine function tests, metabolic studies, and imaging examinations. Molecular diagnoses were analyzed by trio whole‐exome sequencing. Results One novel de novo deleterious variant (c. 324del) of the GATA3 gene was identified in the patient. The patient can be diagnosed with Barakat syndrome. In addition, one novel variant (c. 589A>G) of the SLC34A3 gene was detected, which was inherited from the father. This heterozygous variant can explain the hypercalciuria and kidney stone that occurred in both the patient and his father. Conclusion This study provides a special case which is phenotype‐driven dual diagnoses, and the two novel variants can parsimoniously explain the complex clinical presentations of this patient.
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Affiliation(s)
- Sha Yu
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China.,Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Wen-Xia Chen
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Chao Chen
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Yihua Ni
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Bo Duan
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Bin Wang
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Huijun Wang
- Center for Molecular Medicine, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Zheng-Min Xu
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, Shanghai, China
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Chen K, Wang H, Lai Y. Kallmann Syndrome Due to Heterozygous Mutation in SOX10 Coexisting With Waardenburg Syndrome Type II: Case Report and Review of Literature. Front Endocrinol (Lausanne) 2020; 11:592831. [PMID: 33597923 PMCID: PMC7883637 DOI: 10.3389/fendo.2020.592831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 12/14/2020] [Indexed: 01/18/2023] Open
Abstract
INTRODUCTION Kallmann syndrome (KS) is idiopathic hypogonadotropic hypogonadism with olfactory loss or decline. Waardenburg syndrome type II (WS2) is a clinically and genetically heterogeneous disease, characterized by congenital sensorineural deafness and abnormal pigmentation of the iris, hair, and skin. Recently, mutations in the well-known WS pathogenic gene SOX10 have been found in some KS patients with deafness, but whether SOX10 is a co-pathogenic gene of KS and WS remains uncertain. Here, we report a rare case of KS and WS2 co-occurrence due to SOX10 mutations. METHODS Detailed histories were collected through questionnaires and physical examination. Blood samples of the patient and his family members were collected after obtaining informed consents. Suspected mutations were amplified and verified by Sanger sequencing after the next generation sequencing of related genes. The raw sequence data were compared to the known gene sequence data in publicly available sequence data bases using Burrows-Wheeler Aligner software (BWA, 0.7.12-r1039). RESULTS A 28-year-old male patient sought treatment for hypogonadism and the absence of secondary sexual characteristics. In addition, he showed signs of obesity, hyposmia, sensorineural hearing loss, and blue iris. Magnetic resonance imaging (MRI) of the olfactory bulb showed small bilateral olfactory bulbs and tracts and diaphragma cerebri. MRI of the pituitary gland revealed a flat pituitary gland in the sella. Laboratory examination demonstrated hypogonadotropic hypogonadism, pituitary hypothyroidism, subclinical hypothyroidism, and the presence of insulin resistance with normal blood glucose levels. Sequencing of the SOX10 gene showed a 20 bp insertion in between coding bases 1,179 and 1,180 (c.1179_1180insACTATGGCTCAGCCTTCCCC). This results in a frame-shifting mutation of the 394th amino acid serine in exon4 with the resulting the amino acid sequence of the protein predicted to be TMAQPSP PSPAPSLTTL TISPQDPIMA TRARPLASTR PSPIWGPRSG PSTRPSLTPA PQGPSPTAPH TGSSQYIRHC PGPKGGPVAT TPRPAPAPSL CALFLAHLRP GGGSGGG*. CONCLUSION SOX10 plays an important role in some critical stages of neural crest cell development and SOX10 mutation may be a common pathogenic factor for both KS and WS. Therefore, SOX10 mutation analysis should be considered for KS patients with combined WS clinical manifestations, especially deafness.
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Oya M, Tadano Y, Takihata Y, Ikomi F, Tokunaga T. Utility of Hyperbaric Oxygen Therapy for Acute Acoustic Trauma: 20 years' Experience at the Japan Maritime Self-Defense Force Undersea Medical Center. Int Arch Otorhinolaryngol 2019; 23:e408-e414. [PMID: 31649760 PMCID: PMC6805185 DOI: 10.1055/s-0039-1688433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 06/25/2018] [Accepted: 03/17/2019] [Indexed: 11/29/2022] Open
Abstract
Introduction
Acute acoustic trauma, which is a kind of sensorineural hearing loss, is caused by acoustic overstimulation. Hyperbaric oxygen therapy (HBOT) is reported to be effective against acute acoustic trauma.
Objective
We aimed to evaluate the efficacy of HBOT against acoustic hearing loss based on our 20 years of experience with such cases.
Methods
Patients who were treated with HBOT for acute acoustic trauma between April 1997 and August 2017 were evaluated in this study. Thirty-five patients with a mean age of 25.7 ± 9.2 (range: 16–48) years were included. Thirty-nine out of 70 ears (35 patients) were damaged. We investigated the initial level of hearing loss; the extent to which hearing recovered; subjective symptoms, such as tinnitus and aural fullness; and the treatment administered.
Results
The planned HBOT was completed in 37 of 39 ears. Twenty-six of the 37 ears (70.2%) displayed improved hearing, and 31 of the 37 ears (83.9%) exhibited symptom improvement. Twenty-three (76.7%) and 26 (86.7%) of the 30 ears treated with steroids demonstrated improvements in hearing and subjective symptoms, respectively.
Conclusion
A combination of HBOT and steroids should be considered as a treatment for acute acoustic trauma in cases involving symptoms such as tinnitus and aural fullness.
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Affiliation(s)
- Morihiko Oya
- Department of Medical Research, Japan Maritime Self-Defense Force Undersea Medical Center, Yokosuka, Japan
| | - Yutaka Tadano
- Department of Medical Research, Japan Maritime Self-Defense Force Undersea Medical Center, Yokosuka, Japan
| | - Yasuhiro Takihata
- Department of Medical Research, Japan Maritime Self-Defense Force Undersea Medical Center, Yokosuka, Japan
| | - Fumitaka Ikomi
- Department of Research Institute, National Defense Medical College, Tokorozawa, Japan
| | - Tetsuji Tokunaga
- Department of Medical Research, Japan Maritime Self-Defense Force Undersea Medical Center, Yokosuka, Japan
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23
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Xie MX, Yang WP, Luo HJ, Ismail F, Hao YY, Yang JQ. G59S mutation in the GJB2 gene in a Chinese family with classic Vohwinkel syndrome. J Dermatol 2019; 46:154-157. [PMID: 30565282 DOI: 10.1111/1346-8138.14727] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 03/05/2018] [Accepted: 11/05/2018] [Indexed: 11/28/2022]
Abstract
Vohwinkel syndrome (VS) is a rare autosomal dominant condition, also known as mutilating palmoplantar keratoderma accompanied by sensorineural deafness. The LOR and GJB2 genes are reported to be responsible for VS. The GJB2 gene encodes connexin 26, a component of intercellular gap junctions expressed in various tissues. We report the case of a 31-year-old Chinese woman with classic VS characterized by sensorineural deafness and mutilating palmoplantar keratoderma. Further genetic studies demonstrated a nucleotide change (c.175G>A) in the GJB2 gene, leading to an amino acid alteration (G59S). This identical missense mutation (G59S) has also been reported in a patient with Bart-Pumphrey syndrome. Together with our findings and previous studies, we conclude that the identical mutation (G59S) in the GJB2 gene contributes to various manifestations.
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Affiliation(s)
- Ming-Xing Xie
- Department of Dermatology, Changxing Hospital, Huzhou, China
| | - Wei-Ping Yang
- Department of Stomatology, The First Affiliated Hospital of Huzhou University, Huzhou, China
| | - Hao-Jie Luo
- Department of Dermatology, The First Affiliated Hospital of Huzhou University, Huzhou, China
| | - Ferina Ismail
- Department of Dermatology, The Royal London Hospital, London, UK
| | - Yang-Yang Hao
- Department of Dermatology, The First Affiliated Hospital of Huzhou University, Huzhou, China
| | - Jian-Qiang Yang
- Department of Dermatology, The First Affiliated Hospital of Huzhou University, Huzhou, China
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24
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Neves JF, Doffinger R, Barcena-Morales G, Martins C, Papapietro O, Plagnol V, Curtis J, Martins M, Kumararatne D, Cordeiro AI, Neves C, Borrego LM, Katan M, Nejentsev S. Novel PLCG2 Mutation in a Patient With APLAID and Cutis Laxa. Front Immunol 2018; 9:2863. [PMID: 30619256 PMCID: PMC6302768 DOI: 10.3389/fimmu.2018.02863] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/20/2018] [Indexed: 12/27/2022] Open
Abstract
Background: The auto-inflammation and phospholipase Cγ2 (PLCγ2)-associated antibody deficiency and immune dysregulation (APLAID) syndrome is a rare primary immunodeficiency caused by a gain-of-function mutation S707Y in the PLCG2 gene previously described in two patients from one family. The APLAID patients presented with early-onset blistering skin lesions, posterior uveitis, inflammatory bowel disease (IBD) and recurrent sinopulmonary infections caused by a humoral defect, but lacked circulating autoantibodies and had no cold-induced urticaria, contrary to the patients with the related PLAID syndrome. Case: We describe a new APLAID patient who presented with vesiculopustular rash in the 1st weeks of life, followed by IBD, posterior uveitis, recurrent chest infections, interstitial pneumonitis, and also had sensorineural deafness and cutis laxa. Her disease has been refractory to most treatments, including IL1 blockers and a trial with ruxolitinib has been attempted. Results: In this patient, we found a unique de novo heterozygous missense L848P mutation in the PLCG2 gene, predicted to affect the PLCγ2 structure. Similarly to S707Y, the L848P mutation led to the increased basal and EGF-stimulated PLCγ2 activity in vitro. Whole blood assays showed reduced production of IFN-γ and IL-17 in response to polyclonal T-cell stimulation and reduced production of IL-10 and IL-1β after LPS stimulation. Reduced IL-1β levels and the lack of clinical response to treatment with IL-1 blockers argue against NLRP3 inflammasome hyperactivation being the main mechanism mediating the APLAID pathogenesis. Conclusion: Our findings indicate that L848P is novel a gain-of-function mutation that leads to PLCγ2 activation and suggest cutis laxa as a possible clinical manifestations of the APLAID syndrome.
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Affiliation(s)
- João Farela Neves
- Primary Immunodeficiencies Unit, Hospital Dona Estefânia—CHLC, EPE, Lisbon, Portugal
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Lisbon, Portugal
| | - Rainer Doffinger
- Department of Clinical Biochemistry and Immunology, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Gabriela Barcena-Morales
- Laboratorio de Inmunologia, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Catarina Martins
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Lisbon, Portugal
| | - Olivier Papapietro
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Vincent Plagnol
- University College London Genetics Institute, University College London, London, United Kingdom
| | - James Curtis
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Marta Martins
- Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Dinakantha Kumararatne
- Department of Clinical Biochemistry and Immunology, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Ana Isabel Cordeiro
- Primary Immunodeficiencies Unit, Hospital Dona Estefânia—CHLC, EPE, Lisbon, Portugal
| | - Conceição Neves
- Primary Immunodeficiencies Unit, Hospital Dona Estefânia—CHLC, EPE, Lisbon, Portugal
| | - Luis Miguel Borrego
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Lisbon, Portugal
- Immunoallergy Department, Hospital CUF Descobertas, Lisbon, Portugal
| | - Matilda Katan
- Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Sergey Nejentsev
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centers, Amsterdam, Netherlands
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25
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Celmina M, Micule I, Inashkina I, Audere M, Kuske S, Pereca J, Stavusis J, Pelnena D, Strautmanis J. EAST/SeSAME syndrome: Review of the literature and introduction of four new Latvian patients. Clin Genet 2018; 95:63-78. [PMID: 29722015 DOI: 10.1111/cge.13374] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 03/01/2018] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 11/28/2022]
Abstract
EAST (Epilepsy, Ataxia, Sensorineural deafness, Tubulopathy) or SeSAME (Seizures, Sensorineural deafness, Ataxia, Mental retardation, and Electrolyte imbalance) syndrome is a rare autosomal recessive syndrome first described in 2009 independently by Bockenhauer and Scholl. It is caused by mutations in KCNJ10, which encodes Kir4.1, an inwardly rectifying K+ channel found in the brain, inner ear, kidney and eye. To date, 16 mutations and at least 28 patients have been reported. In this paper, we review mutations causing EAST/SeSAME syndrome, clinical manifestations in detail, and efficacy of treatment in previously reported patients. We also report a new Latvian kindred with 4 patients. In contrast to the majority of previous reports, we found a progressive course of the disorder in terms of hearing impairment and neurologic deficit. The treatment is based on antiepileptic drugs, electrolyte replacement, hearing aids and mobility devices. Future research should concentrate on recognizing the lesions in the central nervous system to evaluate new potential diagnostic criteria and on formally evaluating intellectual disability.
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Affiliation(s)
- M Celmina
- Clinic for Pediatrics, Children's Clinical University Hospital, Riga, Latvia.,Faculty of Continuing Education, University of Latvia, Riga, Latvia
| | - I Micule
- Clinic for Medical Genetics and Prenatal Diagnostics, Children's Clinical University Hospital, Riga, Latvia
| | - I Inashkina
- Latvian Biomedical Research and Study Center, Riga, Latvia
| | - M Audere
- ENT Department, Children's Clinical University Hospital, Riga, Latvia
| | - S Kuske
- Latvian Children's Hearing Center, Riga, Latvia
| | - J Pereca
- Emergency Department, Royal Infirmary of Edinburg, Edinburgh, United Kingdom
| | - J Stavusis
- Latvian Biomedical Research and Study Center, Riga, Latvia
| | - D Pelnena
- Latvian Biomedical Research and Study Center, Riga, Latvia
| | - J Strautmanis
- Clinic for Pediatric Neurology and Neurosurgery, Children's Clinical University Hospital, Riga, Latvia
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26
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Kojima M, Nagano T, Nakata K, Hara S, Katsurada N, Yamamoto M, Tachihara M, Kamiryo H, Kobayashi K, Usui T, Nishimura Y. Lung squamous cell carcinoma associated with hypoparathyroidism with sensorineural deafness and renal dysplasia syndrome: a case report. Onco Targets Ther 2018; 11:1595-1599. [PMID: 29593425 PMCID: PMC5865551 DOI: 10.2147/ott.s161420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hypoparathyroidism with sensorineural deafness and renal dysplasia (HDR) syndrome is an autosomal dominant condition caused by mutations of the gene encoding the dual zinc-finger transcription factor, GATA3. A previous study identified some patients with GATA3 gene variants and breast cancer, suggesting that GATA3 variants may contribute to tumorigenesis in estrogen receptor 1-positive breast tumors; however, these patients did not have HDR syndrome. A 32-year-old nonsmoking Japanese woman was histologically diagnosed with lung squamous cell carcinoma associated with HDR syndrome and a c.C952T>C (p.C318R) germline mutation in GATA3. This is the first report describing cancer in a patient with HDR syndrome. Our data indicates that GATA3 mutations may be a potential therapeutic target for lung cancer.
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Affiliation(s)
- Mariko Kojima
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tatsuya Nagano
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kyosuke Nakata
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Shigeo Hara
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Naoko Katsurada
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Masatsugu Yamamoto
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Motoko Tachihara
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Hiroshi Kamiryo
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kazuyuki Kobayashi
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Takeshi Usui
- Department of Medical Genetics, Shizuoka General Hospital, Shizuoka City, Shizuoka, Japan
| | - Yoshihiro Nishimura
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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27
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Pomahačová R, Zamboryová J, Sýkora J, Paterová P, Fiklík K, Votava T, Černá Z, Jehlička P, Lád V, Šubrt I, Dort J, Dortová E. First 2 cases with thiamine-responsive megaloblastic anemia in the Czech Republic, a rare form of monogenic diabetes mellitus: a novel mutation in the thiamine transporter SLC19A2 gene-intron 1 mutation c.204+2T>G. Pediatr Diabetes 2017; 18:844-847. [PMID: 28004468 DOI: 10.1111/pedi.12479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 08/10/2016] [Accepted: 11/01/2016] [Indexed: 01/19/2023] Open
Abstract
Thiamine-responsive megaloblastic anemia (TRMA) is a rare autosomal recessive disorder caused by mutations in the SLC19A2 gene. To date at least 43 mutations have been reported for the gene encoding a plasma membrane thiamine transporter protein (THTR-1). TRMA has been reported in less than 80 cases worldwide. Here, we illustrate 2 female patients with TRMA first diagnosed in the Czech Republic and in central Europe being confirmed by sequencing of the THTR-1 gene SLC19A2. Both subjects are compound heterozygotes with 3 different mutations in the SLC19A2 gene. In case 2, the SLC19A2 intron 1 mutation c.204+2T>G has never been reported before. TRMA subjects are at risk of diabetic ketoacidosis during intercurrent disease and arrythmias. Thiamine supplementation has prevented hematological disorders over a few years in both pediatric subjects, and improved glycaemic control of diabetes mellitus. Patient 1 was suffering from hearing loss and rod-cone dystrophy at the time of diagnosis, however, she was unresponsive to thiamine substitution. Our patient 2 developed the hearing loss despite the early thiamine substitution, however no visual disorder had developed. The novel mutation described here extends the list of SLC19A2 mutations causing TRMA.
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Affiliation(s)
- Renata Pomahačová
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Jana Zamboryová
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Josef Sýkora
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Petra Paterová
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Karel Fiklík
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Tomáš Votava
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Zdeňka Černá
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Petr Jehlička
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Václav Lád
- Department of Paediatrics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Ivan Šubrt
- Institute of Medical Genetics, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Jiří Dort
- Department of Neonatology, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
| | - Eva Dortová
- Department of Neonatology, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic
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28
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Papavasiliou A, Foska K, Ioannou J, Nagel M. Epilepsy, ataxia, sensorineural deafness, tubulopathy syndrome in a European child with KCNJ10 mutations: A case report. SAGE Open Med Case Rep 2017; 5:2050313X17723549. [PMID: 28835827 PMCID: PMC5536383 DOI: 10.1177/2050313x17723549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 07/07/2017] [Indexed: 11/23/2022] Open
Abstract
Background: Epilepsy, ataxia, sensorineural deafness, tubulopathy syndrome is a multi-organ disorder that links to autosomal recessive mutations in the KCNJ10 gene, which encodes for the Kir4.1 potassium channel. It is mostly described in consanguineous, non-European families. Case Report: A European male of non-consanguineous birth, with early-onset, static ataxic motor disorder, intellectual disability and epilepsy, imitating cerebral palsy, presented with additional findings of renal tubulopathy, sensorineural deafness and normal neuroimaging leading to the diagnosis of epilepsy, ataxia, sensorineural deafness, tubulopathy syndrome. The patient was heterozygous for two KCNJ10 mutations: a missense mutation (p.R65C) that is already published and a not yet published duplication (p.F119GfsX25) that creates a premature truncation of the protein. Both mutations are likely damaging. Parental testing has not been performed, and therefore, we do not know for certain whether the mutations are on different alleles. This young man presents some clinical and laboratory features that differ from previously reported patients with epilepsy, ataxia, sensorineural deafness, tubulopathy syndrome. Conclusion: The necessity of accurate diagnosis through genetic testing in patients with static motor disorders resembling cerebral palsy phenotypes, atypical clinical features and noncontributory neuroimaging is emphasized.
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Affiliation(s)
| | - Katerina Foska
- Department of Pediatric Neurology, Pendeli Children's Hospital, Athens, Greece
| | - John Ioannou
- Department of Pediatric Neurology, Pendeli Children's Hospital, Athens, Greece
| | - Mato Nagel
- Laboratory for Molecular Diagnostics, Weisswasser, Germany
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29
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Abstract
Pendred syndrome is an autosomal recessive disorder that is classically defined by the combination of sensorineural deafness/hearing impairment, goiter, and an abnormal organification of iodide with or without hypothyroidism. The hallmark of the syndrome is the impaired hearing, which is associated with inner ear malformations such as an enlarged vestibular aqueduct (EVA). The thyroid phenotype is variable and may be modified by the nutritional iodine intake. Pendred syndrome is caused by biallelic mutations in the SLC26A4/PDS gene, which encodes the multifunctional anion exchanger pendrin. Pendrin has affinity for chloride, iodide, and bicarbonate, among other anions. In the inner ear, pendrin functions as a chloride/bicarbonate exchanger that is essential for maintaining the composition and the potential of the endolymph. In the thyroid, pendrin is expressed at the apical membrane of thyroid cells facing the follicular lumen. Functional studies have demonstrated that pendrin can mediate iodide efflux in heterologous cells. This, together with the thyroid phenotype observed in humans (goiter, impaired iodine organification) suggests that pendrin could be involved in iodide efflux into the lumen, one of the steps required for thyroid hormone synthesis. Iodide efflux can, however, also occur in the absence of pendrin suggesting that other exchangers or channels are involved. It has been suggested that Anoctamin 1 (ANO1/TMEM16A), a calcium-activated anion channel, which is also expressed at the apical membrane of thyrocytes, could participate in mediating apical efflux. In the kidney, pendrin is involved in bicarbonate secretion and chloride reabsorption. While there is no renal phenotype under basal conditions, severe metabolic alkalosis has been reported in Pendred syndrome patients exposed to an increased alkali load. This review provides an overview on the clinical spectrum of Pendred syndrome, the functional data on pendrin with a focus on its potential role in the thyroid, as well as the controversy surrounding the relative physiological roles of pendrin and anoctamin.
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Affiliation(s)
- Jean-Louis Wémeau
- Université de Lille 2, Centre Hospitalier Régional Universitaire de Lille, Clinique Endocrinologique Marc-Linquette, 59037 Lille, France.
| | - Peter Kopp
- Northwestern University, Division of Endocrinology, Metabolism and Molecular Medicine, Feinberg School of Medicine, Tarry 15, 303 East Chicago Avenue, Chicago, IL 60611, USA.
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30
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Carraro M, Almishaal A, Hillas E, Firpo M, Park A, Harrison RV. Cytomegalovirus (CMV) Infection Causes Degeneration of Cochlear Vasculature and Hearing Loss in a Mouse Model. J Assoc Res Otolaryngol 2016; 18:263-273. [PMID: 27995350 DOI: 10.1007/s10162-016-0606-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [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: 10/12/2016] [Accepted: 11/24/2016] [Indexed: 12/20/2022] Open
Abstract
Cytomegalovirus (CMV) infection is one of the most common causes of congenital hearing loss in children. We have used a murine model of CMV infection to reveal functional and structural cochlear pathogenesis. The cerebral cortex of Balb/c mice (Mus musculus) was inoculated with 2000 pfu (plaque forming units) of murine CMV on postnatal day 3. At 6 weeks of age, cochlear function was monitored using auditory brainstem response (ABR) and distortion product otoacoustic emission (DPOAE) measures. Histological assessment of cochlear vasculature using a corrosion cast technique was made at 8 weeks. Vascular casts of mCMV-damaged cochleas, and those of untreated control animals, were examined using scanning electron microscopy. We find very large variations in the degree of vascular damage in animals given identical viral injections (2000 pfu). The primary lesion caused by CMV infection is to the stria vascularis and to the adjacent spiral limbus capillary network. Capillary beds of the spiral ligament are generally less affected. The initial vascular damage is found in the mid-apical turn and appears to progress to more basal cochlear regions. After viral migration to the inner ear, the stria vascularis is the primary affected structure. We suggest that initial auditory threshold losses may relate to the poor development or maintenance of the endocochlear potential caused by strial dysfunction. Our increased understanding of the pathogenesis of CMV-related hearing loss is important for defining methods for early detection and treatment.
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Affiliation(s)
- Mattia Carraro
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Auditory Science Laboratory, Neuroscience and Mental Health Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Ali Almishaal
- Department of Communication Sciences and Disorders, University of Utah, Salt Lake City, UT, USA
| | - Elaine Hillas
- Department of Surgery, University of Utah, Salt Lake City, UT, USA
| | - Matthew Firpo
- Department of Surgery, University of Utah, Salt Lake City, UT, USA
| | - Albert Park
- Department of Surgery, University of Utah, Salt Lake City, UT, USA
- Department of Otolaryngology, University of Utah, Salt Lake City, UT, USA
| | - Robert V Harrison
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada.
- Auditory Science Laboratory, Neuroscience and Mental Health Program, The Hospital for Sick Children, Toronto, ON, Canada.
- Department of Otolaryngology, Head and Neck Surgery, University of Toronto, Toronto, ON, Canada.
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31
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Köylü MT, Gökçe G, Sobaci G, Oysul FG, Akincioğlu D. Ophthalmic pathologies in female subjects with bilateralcongenital sensorineural hearing loss. Turk J Med Sci 2016; 46:139-44. [PMID: 27511347 DOI: 10.3906/sag-1411-82] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 11/15/2014] [Accepted: 04/24/2015] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM The high prevalence of ophthalmologic pathologies in hearing-disabled subjects necessitates early screening of other sensory deficits, especially visual function. The aim of this study is to determine the frequency and clinical characteristics of ophthalmic pathologies in patients with congenital bilateral sensorineural hearing loss (SNHL). MATERIALS AND METHODS This descriptive study is a prospective analysis of 78 young female SNHL subjects who were examined at a tertiary care university hospital with a detailed ophthalmic examination, including electroretinography (ERG) and visual field tests as needed. RESULTS The mean age was 19.00 ± 1.69 years (range: 15 to 24 years). A total of 39 cases (50%) had at least one ocular pathology. Refractive errors were the leading problem, found in 35 patients (44.9%). Anterior segment examination revealed heterochromia iridis or Waardenburg syndrome in 2 cases (2.56%). Dilated fundus examination revealed retinal pathologies in 15 cases (19.23%), including retinitis pigmentosa or Usher's syndrome in 8 cases (10.25%). Most of the Usher's syndrome cases (87.5%) had consanguinity. CONCLUSION Screening for congenital SNHL in the early years of life and routine yearly follow-ups are essential for maximizing the rehabilitation of this disabled group. The high rate of visually debilitating syndromic ocular pathologies associated with high frequency of consanguinity doubles the importance.
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Affiliation(s)
| | - Gökçen Gökçe
- Department of Ophthalmology, Kayseri Military Hospital, Kayseri, Turkey
| | - Güngor Sobaci
- Department of Ophthalmology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | | | - Dorukcan Akincioğlu
- Department of Ophthalmology, Gülhane Military Medical School, Ankara, Turkey
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32
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Abstract
Ototoxic drugs can be used to produce a loss of cochlear hair cells to create animal models of deafness. However, to the best of our knowledge, there is no report on the establishment of a rat deafness model through the combined application of aminoglycosides and loop diuretics. The aim of this study was to use single or combined administration of furosemide and kanamycin sulfate to establish rat models of deafness. The rats received intravenous injections of different doses of furosemide and/or intramuscular injections of kanamycin sulfate. The auditory brainstem response was measured to determine the hearing threshold after drug application. Immunocytochemistry and confocal microscopy were performed to evaluate inner ear morphology. In the group receiving combined administration of furosemide and kanamycin, the auditory brainstem response threshold showed significant elevation 3 days after administration, higher than that produced by furosemide or kanamycin alone. The hair cells showed varying degrees of injury, from the apical turn to the basal turn of the cochlea and from the outer hair cells to the inner hair cells. The spiral ganglion cells maintained a normal morphology during the first week after the hair cells completely disappeared, and then gradually degenerated. After 2 months, the majority of spiral ganglion cells disappeared, but a few remained. These findings demonstrate that the combined administration of furosemide and kanamycin has a synergistic ototoxic effect, and that these drugs can produce hair cell loss and hearing loss in rats. These findings suggest that even in patients with severe deafness, electronic cochlear implants may partially restore hearing.
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Affiliation(s)
- Long Ma
- The Second Artillery General Hospital of Chinese PLA, Beijing, China
| | - Hai-Jin Yi
- Department of Otolaryngology-Head & Neck Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Fen-Qian Yuan
- Department of Head and Neck Surgery, Jiangxi Cancer Hospital, Nanchang, Jiangxi Province, China
| | - Wei-Wei Guo
- Department of Otolaryngology, Head & Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China
| | - Shi-Ming Yang
- Department of Otolaryngology, Head & Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China
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Dweikat IM, Abdelrazeq S, Ayesh S, Jundi T. MEGDEL Syndrome in a Child From Palestine: Report of a Novel Mutation in SERAC1 Gene. J Child Neurol 2015; 30:1053-6. [PMID: 25051967 DOI: 10.1177/0883073814541474] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 06/01/2014] [Indexed: 11/16/2022]
Abstract
We report the first Palestinian child manifesting with 3-methylglutaconic aciduria psychomotor delay, muscle hypotonia, sensori-neural deafness, and Leigh-like lesions on brain magnetic resonance imaging (MRI), a clinical phenotype that is characteristic of MEGDEL syndrome. MEGDEL syndrome was recently found to be caused by mutations in SERAC1, encoding a protein essential for mitochondrial function, phospholipid remodeling, and intracellular cholesterol trafficking. We identified a novel homozygous mutation in SERAC1 gene (c.1018delT) that generates frame shift and premature termination of protein translation. Plasma and cerebrospinal fluid lactate, plasma alanine, and respiratory chain complexes in fresh muscle were normal. This report further expands the genetic spectrum of MEGDEL syndrome and adds to the evidence that it is associated with variable patterns of respiratory chain abnormalities.
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Affiliation(s)
- Imad M Dweikat
- An-Najah National University, Metabolic. Faculty of Medicine and Health Sciences, Nablus
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Hu EW, Liu LB, Jiang RY, He XH. Goiter and hearing impairment: A case of a male patient with Pendred syndrome. Oncol Lett 2014; 8:2059-2062. [PMID: 25295090 PMCID: PMC4186633 DOI: 10.3892/ol.2014.2461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 06/24/2014] [Indexed: 11/06/2022] Open
Abstract
Pendred syndrome is a rare genetic disease that causes a disturbance in thyroid hormone synthesis, which results in thyroid dysfunction and the development of goiter and sensorineural deafness. The present report describes the case of a young euthyroid male, who developed a large goiter and hearing impairment, despite no family history of these conditions. A left lobectomy and a subtotal right lobectomy were performed, and the patient was administered permanent hormone replacement therapy with thyroxine. Patients with Pendred syndrome exhibit distinct clinical features and the mechanisms associated with the molecular genetics of this disease have been clarified. Thus, gene detection is considered to be a reliable diagnostic method. Certain patients require surgical intervention in order to relieve the symptoms. Misdiagnosis can be significantly reduced by increasing the understanding of Pendred syndrome.
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Affiliation(s)
- Er-Wei Hu
- Department of General Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Li-Bin Liu
- Department of General Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Ruo-Yu Jiang
- Department of General Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Xiang-Hui He
- Department of General Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
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Ridal M, Outtasi N, Taybi Z, Boulouiz R, Chaouki S, Boubou M, Maaroufi M, Benmansour N, Zaki Z, Ouldim K, Barakat H, Hida M, Tizniti S, El Alami MN. [Etiologic profile of severe and profound sensorineural hearing loss in children in the region of north-central Morocco]. Pan Afr Med J 2014; 17:100. [PMID: 25018837 PMCID: PMC4081148 DOI: 10.11604/pamj.2014.17.100.2331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 11/28/2013] [Indexed: 11/24/2022] Open
Abstract
Introduction Le diagnostic d'une surdité profonde est possible dès les premiers jours de vie. Or, le développement du langage et l'intégration scolaire et professionnelle ne sont pas possible que si la surdité est prise en charge précocement. L’établissement d'un diagnostc étiologique a des implications pronostiques et thérapeutiques. Méthodes C'est une étude rétrospective allant de Juin 2009 au mois de Janvier 2012 ayant recensé 250 cas d'enfants porteurs d'une surdité sévère et profonde. Résultats La moyenne d’âge au moment de l'annonce du diagnostic est de 3.7 ans. Les étiologies prédominantes sont les surdités génétiques dans 35.6% suivies des surdités acquises dans 30.8% des cas. Dans 34.4% des cas aucune étiologie n'a pu être retrouvée. Conclusion Cette étude met en évidence la prédominance éventuelle de causes génétiques de la surdité neurosensorielle de l'enfant au Maroc, et souligne la nécessité d'améliorer les politiques de prévention des maladies infectieuses et de dépistage de la surdité néonatale. Cependant, des analyses moléculaires plus ciblées et la réalisation d'un scanner des rochers systématiques sont nécessaires pour évaluer plus précisément la contribution des étiologies génétiques.
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Affiliation(s)
- Mohammed Ridal
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Naouar Outtasi
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Zainab Taybi
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Redouan Boulouiz
- Laboratoire de biologie moléculaire, Institut Pasteur Casablanca, Maroc
| | | | | | | | - Najib Benmansour
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Zouheir Zaki
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Karim Ouldim
- Laboraoire de génétique médicale, CHU Hassan II Fès, Maroc
| | - Hamid Barakat
- Laboratoire de biologie moléculaire, Institut Pasteur Casablanca, Maroc
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Abstract
The electroneutral Na(+)-K(+)-Cl(-) cotransporters NKCC1 (encoded by the SLC12A2 gene) and NKCC2 (SLC12A1 gene) belong to the Na(+)-dependent subgroup of solute carrier 12 (SLC12) family of transporters. They mediate the electroneutral movement of Na(+) and K(+), tightly coupled to the movement of Cl(-) across cell membranes. As they use the energy of the ion gradients generated by the Na(+)/K(+)-ATPase to transport Na(+), K(+), and Cl(-) from the outside to the inside of a cell, they are considered secondary active transport mechanisms. NKCC-mediated transport occurs in a 1Na(+), 1K(+), and 2Cl(-) ratio, although NKCC1 has been shown to sometimes mediate partial reactions. Both transporters are blocked by bumetanide and furosemide, drugs which are commonly used in clinical medicine. NKCC2 is the molecular target of loop diuretics as it is expressed on the apical membrane of thick ascending limb of Henle epithelial cells, where it mediates NaCl reabsorption. NKCC1, in contrast, is found on the basolateral membrane of Cl(-) secretory epithelial cells, as well as in a variety of non-epithelial cells, where it mediates cell volume regulation and participates in Cl(-) homeostasis. Following their molecular identification two decades ago, much has been learned about their biophysical properties, their mode of operation, their regulation by kinases and phosphatases, and their physiological relevance. However, despite this tremendous amount of new information, there are still so many gaps in our knowledge. This review summarizes information that constitutes consensus in the field, but it also discusses current points of controversy and highlights many unanswered questions.
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Affiliation(s)
- Nicolas Markadieu
- Department of Anesthesiology, Vanderbilt University School of Medicine, MCN T-4202, 1161 21st Avenue South, Nashville, TN, 37232, USA
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Hopyan T, Peretz I, Chan LP, Papsin BC, Gordon KA. Children using cochlear implants capitalize on acoustical hearing for music perception. Front Psychol 2012; 3:425. [PMID: 23133430 PMCID: PMC3490327 DOI: 10.3389/fpsyg.2012.00425] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [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: 07/12/2012] [Accepted: 10/01/2012] [Indexed: 11/15/2022] Open
Abstract
Cochlear implants (CIs) electrically stimulate the auditory nerve providing children who are deaf with access to speech and music. Because of device limitations, it was hypothesized that children using CIs develop abnormal perception of musical cues. Perception of pitch and rhythm as well as memory for music was measured by the children’s version of the Montreal Battery of Evaluation of Amusia (MBEA) in 23 unilateral CI users and 22 age-matched children with normal hearing. Children with CIs were less accurate than their normal hearing peers (p < 0.05). CI users were best able to discern rhythm changes (p < 0.01) and to remember musical pieces (p < 0.01). Contrary to expectations, abilities to hear cues in music improved as the age at implantation increased (p < 0.01). Because the children implanted at older ages also had better low frequency hearing prior to cochlear implantation and were able to use this hearing by wearing hearing aids. Access to early acoustical hearing in the lower frequency ranges appears to establish a base for music perception, which can be accessed with later electrical CI hearing.
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Affiliation(s)
- Talar Hopyan
- Department of Otolaryngology, Cochlear Implant Program, The Hospital for Sick Children Toronto, ON, Canada
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Ganie MA, Ali I, Ahangar AG, Wani MM, Ahmed S, Bhat MA, Seth S, Mudasir S. Thiamine responsive megaloblastic anemia syndrome associated with patent ductus arteriosus: First case report from Kashmir Valley of the Indian subcontinent. Indian J Endocrinol Metab 2012; 16:646-650. [PMID: 22837935 PMCID: PMC3401775 DOI: 10.4103/2230-8210.98033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Thiamine responsive megaloblastic anemia syndrome, an autosomal recessive inherited disorder characterized by a triad of anemia, diabetes mellitus and sensorineural deafness is caused by a deficiency of a thiamine transporter protein. The disorder is rare and has not been reported from our community which has high background of consanguinity. We report a six years old girl who presented with diabetes mellitus which remitted after thiamine replacement. The girl in addition had sensorineural deafness, reinopathy, atrial septal defect and megaloblastic anemia which responded to high doses of thymine. This is the first case reported from Kashmir valley and third from India. The presentation and management in such cases is discussed.
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Affiliation(s)
- Mohd Ashraf Ganie
- Department of Endocrinology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Imran Ali
- Department of Endocrinology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - A. G. Ahangar
- Department of Cardiovascular Thoracic Surgery, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Mohd Maqbool Wani
- Department of Neurology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Sanjeed Ahmed
- Department of Cardiovascular Thoracic Surgery, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
- Department of Radio Diagnosis, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Manzoor Ahmed Bhat
- Department of Endocrinology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Sulaiman Seth
- Department of Endocrinology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Syed Mudasir
- Department of Clinical Biochemistry, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
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Abstract
Bartter's syndrome is a group of inherited, salt-losing tubulopathies presenting as metabolic alkalosis with normotensive hyperreninemia and hyperaldosteronism. We report here the first case of a neonate with bilateral, sensorineural deafness, a variant of antenatal Bartter's syndrome from an Indian community.
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Affiliation(s)
- R P Bhamkar
- Department of Pediatrics, Gurunanak Hospital, Bandra (E), Mumbai, India
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Riquelme R, Cediel R, Contreras J, la Rosa Lourdes RD, Murillo-Cuesta S, Hernandez-Sanchez C, Zubeldia JM, Cerdan S, Varela-Nieto I. A comparative study of age-related hearing loss in wild type and insulin-like growth factor I deficient mice. Front Neuroanat 2010; 4:27. [PMID: 20661454 PMCID: PMC2907134 DOI: 10.3389/fnana.2010.00027] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [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: 03/31/2010] [Accepted: 06/01/2010] [Indexed: 01/07/2023] Open
Abstract
Insulin-like growth factor-I (IGF-I) belongs to the family of insulin-related peptides that fulfils a key role during the late development of the nervous system. Human IGF1 mutations cause profound deafness, poor growth and mental retardation. Accordingly, Igf1−/− null mice are dwarfs that have low survival rates, cochlear alterations and severe sensorineural deafness. Presbycusis (age-related hearing loss) is a common disorder associated with aging that causes social and cognitive problems. Aging is also associated with a decrease in circulating IGF-I levels and this reduction has been related to cognitive and brain alterations, although there is no information as yet regarding the relationship between presbycusis and IGF-I biodisponibility. Here we present a longitudinal study of wild type Igf1+/+ and null Igf1−/− mice from 2 to 12 months of age comparing the temporal progression of several parameters: hearing, brain morphology, cochlear cytoarchitecture, insulin-related factors and IGF gene expression and IGF-I serum levels. Complementary invasive and non-invasive techniques were used, including auditory brainstem-evoked response (ABR) recordings and in vivo MRI brain imaging. Igf1−/− null mice presented profound deafness at all the ages studied, without any obvious worsening of hearing parameters with aging. Igf1+/+ wild type mice suffered significant age-related hearing loss, their auditory thresholds and peak I latencies augmenting as they aged, in parallel with a decrease in the circulating levels of IGF-I. Accordingly, there was an age-related spiral ganglion degeneration in wild type mice that was not evident in the Igf1 null mice. However, the Igf1−/− null mice in turn developed a prematurely aged stria vascularis reminiscent of the diabetic strial phenotype. Our data indicate that IGF-I is required for the correct development and maintenance of hearing, supporting the idea that IGF-I-based therapies could contribute to prevent or ameliorate age-related hearing loss.
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Affiliation(s)
- Raquel Riquelme
- Instituto de Investigaciones Biomedicas "Alberto Sols", CSIC-UAM Madrid, Spain
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Pavone P, Ruggieri M, Lombardo I, Sudi J, Biancheri R, Castellano-Chiodo D, Rossi A, Incorpora G, Nowak NJ, Christian SL, Pavone L, Dobyns WB. Microcephaly, sensorineural deafness and Currarino triad with duplication-deletion of distal 7q. Eur J Pediatr 2010; 169:475-81. [PMID: 19838731 DOI: 10.1007/s00431-009-1061-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Accepted: 09/03/2009] [Indexed: 01/10/2023]
Abstract
Currarino syndrome (CS) is a peculiar form of caudal regression syndrome [also known as autosomal dominant sacral agenesis (OMIM no. 176450)] characterised by (1) partial absence of the sacrum with intact first sacral vertebra, (2) a pre-sacral mass and (3) anorectal anomalies (Currarino triad). We studied a 3-year-old girl with Currarino triad who had additional systemic features and performed array comparative genomic hybridisation to look for chromosomal abnormalities. This girl had the typical spectrum of anomalies of the CS including (a) partial sacral agenesis (hemisacrum with remnants of only sacral S1-S2 vertebrae and a residual S3 vertebral body) associated with complete coccygeal agenesis, (b) pre-intrasacral dermoid, (c) intra-dural lipoma, (d) ectopic anus and (e) tethered cord. She had, in addition, pre- and post-natal growth impairment (<3rd percentile), severe microcephaly (<-3 SD) with normal gyration pattern and lack of cortical thickening associated with a hypoplastic inferior vermis, facial dysmorphism, sensorineural deafness and decreased serum levels of IGF-1. A de novo 10.3-Mb duplication of 7q34-q35 and an 8.8-Mb deletion on 7q36 were identified in this patient. The Homeobox HLXB9 (CS) gene is contained within the deletion accounting for the CS phenotype including microcephaly. The spectrums of associated abnormalities in the IGF-1 deficiency growth retardation with sensorineural deafness and mental retardation syndrome (OMIM no. 608747) are discussed. To the best of our knowledge, this is the first reported case of a patient with distal 7q chromosomal imbalance and features of CS triad (including microcephaly) and the first documented case of a patient with normal gyration pattern microcephaly. The spectrum of associated anomalies in this newly recognised phenotype complex consists of growth failure, typical facial anomalies with additional (previously unreported) nervous system abnormalities (e.g. sensorineural deafness) and somatomedin C deficiency.
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Neuwirth AK, Sahai I, Falcone JF, Fleming J, Bagg A, Borgna-Pignatti C, Casey R, Fabris L, Hexner E, Mathews L, Ribeiro ML, Wierenga KJ, Neufeld EJ. Thiamine-responsive megaloblastic anemia: identification of novel compound heterozygotes and mutation update. J Pediatr 2009; 155:888-892.e1. [PMID: 19643445 PMCID: PMC2858590 DOI: 10.1016/j.jpeds.2009.06.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 03/25/2009] [Accepted: 06/08/2009] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To determine causative mutations and clinical status of 7 previously unreported kindreds with TRMA syndrome, (thiamine-responsive megaloblastic anemia, online Mendelian inheritance in man, no. 249270), a recessive disorder of thiamine transporter Slc19A2. STUDY DESIGN Genomic DNA was purified from blood, and SLC19A2 mutations were characterized by sequencing polymerase chain reaction-amplified coding regions and intron-exon boundaries of all probands. Compound heterozygotes were further analyzed by sequencing parents, or cloning patient genomic DNA, to ascertain that mutations were in trans. RESULTS We detected 9 novel SLC19A2 mutations. Of these, 5 were missense, 3 were nonsense, and 1 was insertion. Five patients from 4 kindreds were compound heterozygotes, a finding not reported previously for this disorder, which has mostly been found in consanguineous kindreds. CONCLUSION SLC19A2 mutation sites in TRMA are heterogeneous; with no regional "hot spots." TRMA can be caused by heterozygous compound mutations; in these cases, the disorder is found in outbred populations. To the extent that heterozygous patients were ascertained at older ages, a plausible explanation is that if one or more allele(s) is not null, partial function might be preserved. Phenotypic variability may lead to underdiagnosis or diagnostic delay, as the average time between the onset of symptoms and diagnosis was 8 years in this cohort.
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Affiliation(s)
- Anke K. Neuwirth
- Division of Hematology and Oncology, Children’s Hospital Boston and Harvard Medical School, Boston, Massachusetts
| | - Inderneel Sahai
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jill F. Falcone
- Division of Hematology and Oncology, Children’s Hospital Boston and Harvard Medical School, Boston, Massachusetts
| | - Judy Fleming
- Translational Research Program, Children’s Hospital Boston and Harvard Medical School, Boston, Massachusetts
| | - Adam Bagg
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia
| | | | - Robin Casey
- Department of Medical Genetics, Alberta Children’s Hospital & University of Calgary, Alberta, Canada
| | - Luca Fabris
- Department of Surgical and Gastroenterological Sciences University of Padova, Italy
| | - Elizabeth Hexner
- Department of Medicine, University of Pennsylvania, Philadelphia
| | - Lulu Mathews
- Department of Pediatrics, Medical College Calicut, Kerala, India
| | | | - Klaas J. Wierenga
- Division of Genetics, Department of Pediatrics, University of Miami, Miller School of Medicine, Florida
| | - Ellis J. Neufeld
- Division of Hematology and Oncology, Children’s Hospital Boston and Harvard Medical School, Boston, Massachusetts, Dana-Farber Cancer Institute, Boston, Massachusetts
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Annear NMP, Gale DP, Loughlin S, Dorkins HR, Maxwell PH. End-stage renal failure associated with congenital deafness. NDT Plus 2008; 1:171-5. [PMID: 25983868 PMCID: PMC4421173 DOI: 10.1093/ndtplus/sfn019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Accepted: 02/01/2008] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Daniel P Gale
- Department of Nephrology , Imperial College , London
| | - Sam Loughlin
- Molecular Genetics Laboratory, N.E. Thames Regional Genetics Service
| | - Huw R Dorkins
- N.W. Thames Regional Genetics Service , Kennedy Galton Centre , Harrow HA1 3UJ , UK
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Francis PJ, Johnson S, Edmunds B, Kelsell RE, Sheridan E, Garrett C, Holder GE, Hunt DM, Moore AT. Genetic linkage analysis of a novel syndrome comprising North Carolina-like macular dystrophy and progressive sensorineural hearing loss. Br J Ophthalmol 2003; 87:893-8. [PMID: 12812894 PMCID: PMC1771750 DOI: 10.1136/bjo.87.7.893] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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] [Accepted: 09/19/2002] [Indexed: 11/04/2022]
Abstract
AIM To characterise the phenotype and identify the underlying genetic defect in a family with deafness segregating with a North Carolina-like macular dystrophy (NCMD). METHODS Details of the family were obtained from the Moorfields Eye Hospital genetic clinic database and comprised eight affected, four unaffected members, and two spouses. Pedigree data were collated and leucocyte DNA extracted from venous blood. Positional candidate gene and genetic linkage strategies utilising polymerase chain reaction (PCR) based microsatellite marker genotyping were performed to identify the disease locus. RESULTS The non-progressive ocular phenotype shared similarities with North Carolina macular dystrophy. Electro-oculography and full field electroretinography were normal. Progressive sensorineural deafness was also present in all affected individuals over the age of 20 years. Hearing was normal in all unaffected relatives. Haplotype analysis indicated that this family is unrelated to previously reported families with NCMD. Genotyping excluded linkage to the MCDR1 locus and suggested a potential novel disease locus on chromosome 14q (Z=2.92 at theta=0 for marker D14S261). CONCLUSION The combination of anomalies segregating in this family represents a novel phenotype. This molecular analysis indicates the disease is genetically distinct from NCMD.
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Affiliation(s)
- P J Francis
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, UK
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