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Prestin, a Cochlear Motor Protein, Is Defective in Non-Syndromic Hearing Loss
Human Molecular Genetics, 2003, Vol. 12, No. 10 1155–1162 DOI: 10.1093/hmg/ddg127 Prestin, a cochlear motor protein, is defective in non-syndromic hearing loss Xue Zhong Liu1,*, Xiao Mei Ouyang1, Xia Juan Xia2, Jing Zheng3, Arti Pandya2, Fang Li1, Li Lin Du1, Katherine O. Welch4, Christine Petit5, Richard J.H. Smith6, Bradley T. Webb2, Denise Yan1, Kathleen S. Arnos4, David Corey7, Peter Dallos3, Walter E. Nance2 and Zheng Yi Chen8 1Department of Otolaryngology, University of Miami, Miami, FL 33101, USA, 2Department of Human Genetics, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298-0033, USA, 3Department of Communication Sciences and Disorders, Auditory Physiology Laboratory (The Hugh Knowles Center), Northwestern University, Evanston, IL, USA, 4Department of Biology, Gallaudet University, Washington, DC 20002, USA, 5Unite´ de Ge´ne´tique des De´ficits Sensoriels, CNRS URA 1968, Institut Pasteur, Paris, France, 6Department of Otolaryngology University of Iowa, Iowa City, IA 52242, USA, 7Neurobiology Department, Harvard Medical School and Howard Hughes Medical Institute, Boston, MA, USA and 8Department of Neurology, Massachusetts General Hospital and Neurology Department, Harvard Medical School Boston, MA 02114, USA Received January 14, 2003; Revised and Accepted March 14, 2003 Prestin, a membrane protein that is highly and almost exclusively expressed in the outer hair cells (OHCs) of the cochlea, is a motor protein which senses membrane potential and drives rapid length changes in OHCs. Surprisingly, prestin is a member of a gene family, solute carrier (SLC) family 26, that encodes anion transporters and related proteins. Of nine known human genes in this family, three (SLC26A2, SLC26A3 and SLC26A4 ) are associated with different human hereditary diseases. -
Skeletal Dysplasias
Skeletal Dysplasias North Carolina Ultrasound Society Keisha L.B. Reddick, MD Wilmington Maternal Fetal Medicine Development of the Skeleton • 6 weeks – vertebrae • 7 weeks – skull • 8 wk – clavicle and mandible – Hyaline cartilage • Ossification – 7-12 wk – diaphysis appears – 12-16 wk metacarpals and metatarsals – 20+ wk pubis, calus, calcaneus • Visualization of epiphyseal ossification centers Epidemiology • Overall 9.1 per 1000 • Lethal 1.1 per 10,000 – Thanatophoric 1/40,000 – Osteogenesis Imperfecta 0.18 /10,000 – Campomelic 0.1 /0,000 – Achondrogenesis 0.1 /10,000 • Non-lethal – Achondroplasia 15 in 10,000 Most Common Skeletal Dysplasia • Thantophoric dysplasia 29% • Achondroplasia 15% • Osteogenesis imperfecta 14% • Achondrogenesis 9% • Campomelic dysplasia 2% Definition/Terms • Rhizomelia – proximal segment • Mezomelia –intermediate segment • Acromelia – distal segment • Micromelia – all segments • Campomelia – bowing of long bones • Preaxial – radial/thumb or tibial side • Postaxial – ulnar/little finger or fibular Long Bone Segments Counseling • Serial ultrasound • Genetic counseling • Genetic testing – Amniocentesis • Postnatal – Delivery center – Radiographs Assessment • Which segment is affected • Assessment of distal extremities • Any curvatures, fracture or clubbing noted • Are metaphyseal changes present • Hypoplastic or absent bones • Assessment of the spinal canal • Assessment of thorax. Skeletal Dysplasia Lethal Non-lethal • Thanatophoric • Achondroplasia • OI type II • OI type I, III, IV • Achondrogenesis • Hypochondroplasia -
Genes in Eyecare Geneseyedoc 3 W.M
Genes in Eyecare geneseyedoc 3 W.M. Lyle and T.D. Williams 15 Mar 04 This information has been gathered from several sources; however, the principal source is V. A. McKusick’s Mendelian Inheritance in Man on CD-ROM. Baltimore, Johns Hopkins University Press, 1998. Other sources include McKusick’s, Mendelian Inheritance in Man. Catalogs of Human Genes and Genetic Disorders. Baltimore. Johns Hopkins University Press 1998 (12th edition). http://www.ncbi.nlm.nih.gov/Omim See also S.P.Daiger, L.S. Sullivan, and B.J.F. Rossiter Ret Net http://www.sph.uth.tmc.edu/Retnet disease.htm/. Also E.I. Traboulsi’s, Genetic Diseases of the Eye, New York, Oxford University Press, 1998. And Genetics in Primary Eyecare and Clinical Medicine by M.R. Seashore and R.S.Wappner, Appleton and Lange 1996. M. Ridley’s book Genome published in 2000 by Perennial provides additional information. Ridley estimates that we have 60,000 to 80,000 genes. See also R.M. Henig’s book The Monk in the Garden: The Lost and Found Genius of Gregor Mendel, published by Houghton Mifflin in 2001 which tells about the Father of Genetics. The 3rd edition of F. H. Roy’s book Ocular Syndromes and Systemic Diseases published by Lippincott Williams & Wilkins in 2002 facilitates differential diagnosis. Additional information is provided in D. Pavan-Langston’s Manual of Ocular Diagnosis and Therapy (5th edition) published by Lippincott Williams & Wilkins in 2002. M.A. Foote wrote Basic Human Genetics for Medical Writers in the AMWA Journal 2002;17:7-17. A compilation such as this might suggest that one gene = one disease. -
Esophageal Web Complicating an Isolated Esophageal Lichen Planus
Bahrain Medical Bulletin, Vol. 40, No. 4, December 2018 Esophageal Web Complicating an Isolated Esophageal Lichen Planus Sara Al-Saad, MB BCh BAO* Abdulla Darwish, FRCPath** Veena Nagaraj, FRCPath*** Zuhal Ghandoor, FRCP**** Lichen planus (LP) is a chronic, idiopathic disorder affecting the mucosal surfaces, skin and nails. Esophageal involvement in this disease is rare and only few cases were found in literature, thus making its diagnosis challenging as it can be easily misdiagnosed as gastroesophageal reflux disease. Currently, little is known about its pathogenesis and management. We report a case of a previously healthy 32-year-old female who presented with the complaint of dysphagia, which was later diagnosed endoscopically as an esophageal web. Biopsy of the lesion revealed a histological diagnosis of an esophageal lichen planus (ELP). This was treated with multiple Esophagogastro Duodenoscopy (OGD) dilatation sessions and local steroids. We also reviewed similar reported cases in the literature, stressing on the importance of the successful management of such a disease and its complications. Bahrain Med Bull 2018; 40(4): 254 - 256 Lichen Planus (LP) is a mucocutaneous disease of the stratified The treatment of esophageal webs includes endoscopic squamous epithelium, which affects the mucous membranes, dilatation, steroids and surgical myomectomy3. skin, nails, and scalp. LP is estimated to affect 0.5% to 2.0% of the general population. It is mostly reported in middle- The relationship between ELP and esophageal webs is not clear aged patients (between 30-60 years of age) and is seen more and rarely reported in the literature. evidently in females1. The aim of this presentation is to report a case of esophageal It is one of the chronic disorders where oral involvement may web complicating an ELP. -
Prevalence and Incidence of Rare Diseases: Bibliographic Data
Number 1 | January 2019 Prevalence and incidence of rare diseases: Bibliographic data Prevalence, incidence or number of published cases listed by diseases (in alphabetical order) www.orpha.net www.orphadata.org If a range of national data is available, the average is Methodology calculated to estimate the worldwide or European prevalence or incidence. When a range of data sources is available, the most Orphanet carries out a systematic survey of literature in recent data source that meets a certain number of quality order to estimate the prevalence and incidence of rare criteria is favoured (registries, meta-analyses, diseases. This study aims to collect new data regarding population-based studies, large cohorts studies). point prevalence, birth prevalence and incidence, and to update already published data according to new For congenital diseases, the prevalence is estimated, so scientific studies or other available data. that: Prevalence = birth prevalence x (patient life This data is presented in the following reports published expectancy/general population life expectancy). biannually: When only incidence data is documented, the prevalence is estimated when possible, so that : • Prevalence, incidence or number of published cases listed by diseases (in alphabetical order); Prevalence = incidence x disease mean duration. • Diseases listed by decreasing prevalence, incidence When neither prevalence nor incidence data is available, or number of published cases; which is the case for very rare diseases, the number of cases or families documented in the medical literature is Data collection provided. A number of different sources are used : Limitations of the study • Registries (RARECARE, EUROCAT, etc) ; The prevalence and incidence data presented in this report are only estimations and cannot be considered to • National/international health institutes and agencies be absolutely correct. -
Hypertrophic Pyloric Stenosis
Imaging of Pediatric Abdominal Disease Mark S. Finkelstein DO, FAOCR Department of Medical Imaging What is our goal? . Familiarize pediatricians to a variety of common pediatric GI disorders . Outline a practical approach to imaging pediatric GI diseases . Review current methods & discuss current imaging techniques for the evaluation of pediatric GI disease What is the purpose of the plain film abdomen study? . Foundation of GI imaging . Distinguishes surgical vs. non-surgical disease . Considerations – AP supine: . Used to evaluate vague or chronic abdominal pain – Horizontal beam: . Used to demonstrate free intra-peritoneal air (erect,supine cross table lateral or decubitus) – Prone: . Useful for differentiating large from small bowel . Useful for excluding SBO Common Imaging Techniques . Fluoroscopy . Ultrasound . CT . Nuclear Medicine . MRI Fluoroscopy Technique . Fasting time: – Premature = 2-4 hours NPO – Infant < 2 1/2 yrs = 4 hours NPO – Children > 2 1/2 yrs = 6 hours NPO . Digital low dose fluoroscopy with small field size . Contrast medium: – Barium is best – Air – Other options: . Gastrograffin (GG) = High osmolality, water soluble warning: GG should only be used by qualified experienced pediatric radiologists . Metrizimide, Iohexol, Iopamidol, etc.= low osmolality, non-ionic water soluble Ultrasound Technique . Abdomen Prep (Complete/Limited) Fasting time: – Children < 5 yr. = 4 hours NPO – Children > 5 yr. = 8 hours NPO . Renal/Pelvic Prep – Infant < 1 yr. = Patient given formula, juice during exam – 1yr- 10yrs = Child must drink 12-16 oz clear fluid 1 -2 hrs prior to exam – > 11 yr. = Child must drink 24-32 oz clear fluid 1 -2 hrs prior to exam Children who are continent should not empty bladder 3 hrs prior to renal US exam CT Technique . -
Orphanet Report Series Rare Diseases Collection
Marche des Maladies Rares – Alliance Maladies Rares Orphanet Report Series Rare Diseases collection DecemberOctober 2013 2009 List of rare diseases and synonyms Listed in alphabetical order www.orpha.net 20102206 Rare diseases listed in alphabetical order ORPHA ORPHA ORPHA Disease name Disease name Disease name Number Number Number 289157 1-alpha-hydroxylase deficiency 309127 3-hydroxyacyl-CoA dehydrogenase 228384 5q14.3 microdeletion syndrome deficiency 293948 1p21.3 microdeletion syndrome 314655 5q31.3 microdeletion syndrome 939 3-hydroxyisobutyric aciduria 1606 1p36 deletion syndrome 228415 5q35 microduplication syndrome 2616 3M syndrome 250989 1q21.1 microdeletion syndrome 96125 6p subtelomeric deletion syndrome 2616 3-M syndrome 250994 1q21.1 microduplication syndrome 251046 6p22 microdeletion syndrome 293843 3MC syndrome 250999 1q41q42 microdeletion syndrome 96125 6p25 microdeletion syndrome 6 3-methylcrotonylglycinuria 250999 1q41-q42 microdeletion syndrome 99135 6-phosphogluconate dehydrogenase 67046 3-methylglutaconic aciduria type 1 deficiency 238769 1q44 microdeletion syndrome 111 3-methylglutaconic aciduria type 2 13 6-pyruvoyl-tetrahydropterin synthase 976 2,8 dihydroxyadenine urolithiasis deficiency 67047 3-methylglutaconic aciduria type 3 869 2A syndrome 75857 6q terminal deletion 67048 3-methylglutaconic aciduria type 4 79154 2-aminoadipic 2-oxoadipic aciduria 171829 6q16 deletion syndrome 66634 3-methylglutaconic aciduria type 5 19 2-hydroxyglutaric acidemia 251056 6q25 microdeletion syndrome 352328 3-methylglutaconic -
Blueprint Genetics Comprehensive Skeletal Dysplasias and Disorders
Comprehensive Skeletal Dysplasias and Disorders Panel Test code: MA3301 Is a 251 gene panel that includes assessment of non-coding variants. Is ideal for patients with a clinical suspicion of disorders involving the skeletal system. About Comprehensive Skeletal Dysplasias and Disorders This panel covers a broad spectrum of skeletal disorders including common and rare skeletal dysplasias (eg. achondroplasia, COL2A1 related dysplasias, diastrophic dysplasia, various types of spondylo-metaphyseal dysplasias), various ciliopathies with skeletal involvement (eg. short rib-polydactylies, asphyxiating thoracic dysplasia dysplasias and Ellis-van Creveld syndrome), various subtypes of osteogenesis imperfecta, campomelic dysplasia, slender bone dysplasias, dysplasias with multiple joint dislocations, chondrodysplasia punctata group of disorders, neonatal osteosclerotic dysplasias, osteopetrosis and related disorders, abnormal mineralization group of disorders (eg hypopohosphatasia), osteolysis group of disorders, disorders with disorganized development of skeletal components, overgrowth syndromes with skeletal involvement, craniosynostosis syndromes, dysostoses with predominant craniofacial involvement, dysostoses with predominant vertebral involvement, patellar dysostoses, brachydactylies, some disorders with limb hypoplasia-reduction defects, ectrodactyly with and without other manifestations, polydactyly-syndactyly-triphalangism group of disorders, and disorders with defects in joint formation and synostoses. Availability 4 weeks Gene Set Description -
Habilitative Services and Outpatient Rehabilitation Therapy
UnitedHealthcare® Commercial Coverage Determination Guideline Habilitative Services and Outpatient Rehabilitation Therapy Guideline Number: CDG.026.11 Effective Date: May 1, 2021 Instructions for Use Table of Contents Page Related Commercial Policies Coverage Rationale ........................................................................... 1 • Cochlear Implants Definitions ........................................................................................... 6 • Cognitive Rehabilitation Applicable Codes .............................................................................. 9 • Durable Medical Equipment, Orthotics, Medical References .......................................................................................36 Supplies and Repairs/ Replacements Guideline History/Revision Information .......................................36 • Inpatient Pediatric Feeding Programs Instructions for Use .........................................................................36 • Skilled Care and Custodial Care Services Medicare Advantage Coverage Summaries • Rehabilitation: Cardiac Rehabilitation Services (Outpatient) • Rehabilitation: Medical Rehabilitation (OT, PT and ST, including Cognitive Rehabilitation) • Respiratory Therapy, Pulmonary Rehabilitation and Pulmonary Services Coverage Rationale Indications for Coverage Habilitative Services Habilitative services are Medically Necessary, Skilled Care services that are part of a prescribed treatment plan or maintenance program* to help a person with a disabling condition to -
Clinical Vignette Abstracts NASPGHAN Annual Meeting October 10-12, 2013
Clinical Vignette Abstracts NASPGHAN Annual Meeting October 10-12, 2013 Poster Session I Eosphagus Stomach 11 Successful Use of Biliary Ducts Balloon Dilator in Repairing Post-Surgical Esophageal Stricture in premature infant. I. Absah, Department of Pediatirc Gastroenterology and Hepatology, Mayo Clinic college of Medicien, Rochester, Minnesota, UNITED STATES. Absah, M.B. Beg, Department of Pediatirc Gastroenterology and Hepatology, SUNY Upstate Medical University, Syracuse, New York, UNITED STATES. Background: Esophageal atresia (EA) with or without tracheoesophageal fistula (TEF) is the most common type of gastrointestinal atresia with occurrence rate of I in 3,000 to 5,000 births. There are 5 major varieties of EA. The most common variant of this anomaly consists of a blind esophageal pouch with a fistula between the trachea and the distal esophagus, which occurs in 84% of the time. Treatment is by extra-pleural surgical repair of the esophageal atresia and closure of the tracheoesophageal fistula. Complications may include leakage to the mediastinum, fistula recurrence, GERD, and stricture formation at the anastomosis site. Benign stricture occurs in 40% of the cases after surgical repair. These benign post-surgical strictures cause feeding difficulties and require treatment. Esophageal dilation is 90% effective, but strictures that do not respond to dilation must be resected surgically. Case report: A 52 days old premature baby that was born at 35 weeks presented with feeding difficulty, due to benign esophageal stricture 44 days after surgical repair of EA and TEF. The luminal diameter of the stricture was ≤ 4mm, for that regular balloon esophageal dilators (smallest = 6mm) couldn’t be used. -
Esophageal Web in a Down Syndrome Infant—A Rare Case Report
children Case Report Esophageal Web in a Down Syndrome Infant—A Rare Case Report Nirmala Thomas 1, Roy J. Mukkada 2, Muhammed Jasim Abdul Jalal 3,* and Nisha Narayanankutty 3 1 Department of Pediatrics, VPS Lakeshore Hospital, 682040 Kochi, Kerala, India; [email protected] 2 Department of Gastromedicine, VPS Lakeshore Hospital, 682040 Kochi, Kerala, India; [email protected] 3 Department of Family Medicine, VPS Lakeshore Hospital, 682040 Kochi, Kerala, India; [email protected] * Correspondence: [email protected]; Tel.: +91-954-402-0621 Received: 8 November 2017; Accepted: 8 January 2018; Published: 11 January 2018 Abstract: We describe the rare case of an infant with trisomy 21 who presented with recurrent vomiting and aspiration pneumonia and a failure to thrive. Infants with Down’s syndrome have been known to have various problems in the gastrointestinal tract. In the esophagus, what have been described are dysmotility, gastroesophageal reflux and strictures. This infant on evaluation was found to have an esophageal web and simple endoscopic dilatation relieved the infant of her symptoms. No similar case has been reported in literature. Keywords: trisomy 21; recurrent vomiting; aspiration pneumonia; esophageal web 1. Introduction In 1866, John Langdon Down described the physical manifestations of the disorder that would later bear his name [1]. Jerome Lejeune demonstrated its association with chromosome 21 in 1959 [1]. It is the most common chromosomal abnormality occurring in humans and it is caused by the presence a third copy of chromosome 21 (trisomy 21). It is associated with multisystem involvement with manifestations that grossly impact the quality of life of the child. -
Identification of the Finnish Founder Mutation for Diastrophic Dysplasia
European Journal of Human Genetics (1999) 7, 664–670 t © 1999 Stockton Press All rights reserved 1018–4813/99 $15.00 http://www.stockton-press.co.uk/ejhg ARTICLE Identification of the Finnish founder mutation for diastrophic dysplasia (DTD) Johanna H¨astbacka1, Anne Kerrebrock2, Kati Mokkala1, Gregory Clines3, Michael Lovett3,4, Ilkka Kaitila5, Albert de la Chapelle6 and Eric S Lander2,7 1Department of Medical Genetics, Haartman Institute, University of Helsinki, Finland 2Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA 3McDermott Center and 4Department of Biochemistry, University of Texas Southwestern Medical Center at Dallas, Texas, USA 5Department of Clinical Genetics, Helsinki University Central Hospital, Finland 6Division of Human Cancer Genetics, Ohio State University, Columbus, Ohio, USA 7Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA Diastrophic dysplasia (DTD) is especially prevalent in Finland and the existence of a founder mutation has been previously inferred from the fact that 95% of Finnish DTD chromosomes have a rare ancestral haplotype found in only 4% of Finnish control chromosomes. Here we report the identification of the Finnish founder mutation as a GT– > GC transition (c.–26 + 2T > C) in the splice donor site of a previously undescribed 5'-untranslated exon of the diastrophic dysplasia sulfate transporter gene (DTDST); the mutation acts by severely reducing mRNA levels. Among 84 DTD families in Finland, patients carried two copies of the mutation in 69 families, one copy in 14 families, and no copies in one family. Roughly 90% of Finnish DTD chromosomes thus carry the splice-site mutation, which we have designated DTDSTFin. Unexpectedly, we found that nine of the DTD chromosomes having the apparently ancestral haplotype did not carry DTDSTFin, but rather two other mutations.