{"title":"Physiotherapy for Children with CLN2 Disease","authors":"Ina von Löbbecke","doi":"10.1590/2326-4594-jiems-2019-0009","DOIUrl":"https://doi.org/10.1590/2326-4594-jiems-2019-0009","url":null,"abstract":"CLN2 disease (neuronal ceroid lipofuscinosis type 2) is a rare, genetic, paediatric-onset, neurodegenerative lysosomal storage disorder characterised by seizures, ataxia, rapid loss of motor function and language ability, dementia, visual loss and early death. Physiotherapy plays an important role in the management of CLN2 disease, aiming to maintain the best possible functioning and autonomy of the child, support the child’s participation in everyday life, limit secondary complications and maintain or improve","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75112392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Pereira, C. D. Souza, L. Vedolin, F. Vairo, C. Lorea, C. Sobreira, C. Nogueira, L. Vilarinho
{"title":"Leigh Syndrome Due to mtDNA Pathogenic Variants","authors":"C. Pereira, C. D. Souza, L. Vedolin, F. Vairo, C. Lorea, C. Sobreira, C. Nogueira, L. Vilarinho","doi":"10.1590/2326-4594-JIEMS-2018-0003","DOIUrl":"https://doi.org/10.1590/2326-4594-JIEMS-2018-0003","url":null,"abstract":"Leigh syndrome is a devastating neurodegenerative disease, typically manifesting in infancy or early childhood. Hallmarks of the disease are symmetrical lesions in the basal ganglia or brain stem on MRI, and a clinical course with rapid deterioration of cognitive and motor functions. It is genetically heterogeneous, causative mutations have been disclosed in mitochondrial DNA and nuclear genes involved in the process of energy production in the mitochondria. We investigated the whole mitochondrial DNA in three Brazilian patients with LS, based on their clinical and biochemical data, with the aim to identify the disease-causing mutations. In two of the patients, with complex I deficiency, a novel heteroplasmic variant m.4142G>T (p.R279L) in MT-ND1 and a recurrent homoplasmic mutation m.10197G>A (p.A47T) in MT-ND3 were identified. In the remaining patient, with complex IV deficiency, a de novo heteroplasmic variant in MT-CO1 m.6547T>C (p.L215P) was found. The molecular investigation in mitochondrial diseases have shifted their focus from mitochondrial DNA to nuclear DNA, however, mtDNA protein-coding genes are one of the important genetic causes of mitochondrial disorders for Leigh syndrome. This study expands the molecular and clinical spectrum associated with this disease.","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86748309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giovana Regina Weber Hoss, Soraia Poloni, H. Blom, I. Schwartz
{"title":"Three Main Causes of Homocystinuria: CBS, cblC and MTHFR Deficiency. What do they Have in Common?","authors":"Giovana Regina Weber Hoss, Soraia Poloni, H. Blom, I. Schwartz","doi":"10.1590/2326-4594-jiems-2019-0007","DOIUrl":"https://doi.org/10.1590/2326-4594-jiems-2019-0007","url":null,"abstract":"Genetic homocystinurias are a group of inborn errors of metabolism that result in the massive excretion of homocysteine (Hcy) in the urine due to Hcy accumulation in the body, usually causing neurological and cardiovascular complications. The three most frequent causes are classical homocystinuria [deficiency of cystathionine beta-synthase (CBS)], methylmalonic aciduria with homocystinuria, cblC type (cblC deficiency) and severe methylenetetrahydrofolate reductase (MTHFR) deficiency. In this review, we highlight the similarities and differences among these disorders. Briefly, their joint manifestation is the accumulation of tHcy, however, the other sulfur amino acids show various and even invers profiles. Vascular disease, developmental delay and seizures are found in all homocystinurias, nevertheless, the complications of CNS differ in a wide variety of presentations and severities and are apparently less pronounced in CBS deficiency. Moreover, patients with remethylation defects typically do not present ectopia lentis and bone disturbances, tall stature and osteoporosis. Whereas hematological alterations, such as megaloblastic anemia, thrombocytopenia neutropenia and life-threatening microangiopathy, are specific findings of cblC deficiency.","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"293 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79667424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Metryka, N. Brown, J. Mercer, S. Wilkinson, Simon A. Jones, P. Williamson, I. Bruce
{"title":"Toward a Core Outcome Set for Head, Neck, and Respiratory Disease in Mucopolysaccharidosis Type II: Systematic Literature Review and Assessment of Heterogeneity in Outcome Reporting","authors":"A. Metryka, N. Brown, J. Mercer, S. Wilkinson, Simon A. Jones, P. Williamson, I. Bruce","doi":"10.1590/2326-4594-iem-18-0016","DOIUrl":"https://doi.org/10.1590/2326-4594-iem-18-0016","url":null,"abstract":"","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75942160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Larrandaburu, F. Vianna, Karina Griot, C. Queijo, G. Monzón, C. Ugarte, L. Nacul, L. Schuler‐Faccini, M. Sanseverino
{"title":"Rare Diseases in Uruguay: Focus on Infants with Abnormal Newborn Screening","authors":"M. Larrandaburu, F. Vianna, Karina Griot, C. Queijo, G. Monzón, C. Ugarte, L. Nacul, L. Schuler‐Faccini, M. Sanseverino","doi":"10.1590/2326-4594-JIEMS-2019-0002","DOIUrl":"https://doi.org/10.1590/2326-4594-JIEMS-2019-0002","url":null,"abstract":" Abstract Introduction: Newborn Screening Program (NBS) in Uruguay includes congenital hypothyroidism (CHT), phenylketonuria (PKU), congenital adrenal hyperplasia (CAH), cystic fibrosis (CF), medium chain acyl-CoA dehydrogenase deficiency (MCADD), and Congenital Hearing Loss (CHL). Objetives: This study describe the epidemiological characteristics of newborns with abnormal neonatal screening tests diagnosed by blood drop and otoacoustic emissions in Uruguay. Results: Cases with abnormal NBS tests (399 newborns; 0.17%) were compared to the newborns with normal tests in the same period (239,240). Prevalence rates (per 10,000 livebirths) were 10.00 for CHL; 3.70 for CH; 1.20 for CF; 0.59 for CAH; 0.54 for PKU; 0.13 for MCADD. The Department of Artigas had the highest rate of abnormal tests. Lower maternal education, less prenatal care, increased prematurity rate and neonatal depression were more frequent in in mothers whose children had CHL. Conclusions: This is the first study evaluating the characteristics of newborns with abnormal screening in Uruguay. Because these results may impact the planning of health services, data transmission between clinical care and public health systems is needed to improve both follow-up and","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78277897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fabíola Vicente, E. Jurecki, D. Giovannetti, A. Ferreira, Efigênia Leite, L. Giugliani, C. Acquadro
{"title":"Linguistic Validation of the Phenylketonuria - Quality of Life (PKU-QOL) Questionnaire Into Brazilian Portuguese","authors":"Fabíola Vicente, E. Jurecki, D. Giovannetti, A. Ferreira, Efigênia Leite, L. Giugliani, C. Acquadro","doi":"10.1590/2326-4594-JIEMS-2018-0001","DOIUrl":"https://doi.org/10.1590/2326-4594-JIEMS-2018-0001","url":null,"abstract":"","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78934691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ayman W El-Hattab, Mohammed Almannai, Fernando Scaglia
{"title":"Arginine and citrulline for the treatment of MELAS syndrome.","authors":"Ayman W El-Hattab, Mohammed Almannai, Fernando Scaglia","doi":"10.1177/2326409817697399","DOIUrl":"10.1177/2326409817697399","url":null,"abstract":"<p><p>MELAS (mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes) syndrome is a maternally inherited mitochondrial disease with a broad spectrum of manifestations. In addition to impaired energy production, nitric oxide (NO) deficiency occurs in MELAS syndrome and leads to impaired blood perfusion in microvasculature that can contribute to several complications including stroke-like episodes, myopathy, and lactic acidosis. The supplementation of NO precursors, L-arginine and L-citrulline, increases NO production and hence can potentially have therapeutic utility in MELAS syndrome. L-citrulline raises NO production to a greater extent than L-arginine; therefore, L-citrulline may have a better therapeutic effect. The clinical effect of L-citrulline has not yet been studied and clinical studies on L-arginine, which are limited, only evaluated the stroke-like episodes aspect of the disease. Controlled studies are still needed to assess the clinical effects of L-arginine and L-citrulline on different aspects of MELAS syndrome.</p>","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"5 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519148/pdf/nihms876713.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35193439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miyono M Hendrix, Stephanie L Foster, Suzanne K Cordovado
{"title":"Newborn Screening Quality Assurance Program for CFTR Mutation Detection and Gene Sequencing to Identify Cystic Fibrosis.","authors":"Miyono M Hendrix, Stephanie L Foster, Suzanne K Cordovado","doi":"10.1177/2326409816661358","DOIUrl":"https://doi.org/10.1177/2326409816661358","url":null,"abstract":"<p><p>All newborn screening laboratories in the United States and many worldwide screen for cystic fibrosis. Most laboratories use a second-tier genotyping assay to identify a panel of mutations in the CF transmembrane regulator (<i>CFTR</i>) gene. Centers for Disease Control and Prevention's Newborn Screening Quality Assurance Program houses a dried blood spot repository of samples containing <i>CFTR</i> mutations to assist newborn screening laboratories and ensure high-quality mutation detection in a high-throughput environment. Recently, <i>CFTR</i> mutation detection has increased in complexity with expanded genotyping panels and gene sequencing. To accommodate the growing quality assurance needs, the repository samples were characterized with several multiplex genotyping methods, Sanger sequencing, and 3 next-generation sequencing assays using a high-throughput, low-concentration DNA extraction method. The samples performed well in all of the assays, providing newborn screening laboratories with a resource for complex <i>CFTR</i> mutation detection and next-generation sequencing as they transition to new methods.</p>","PeriodicalId":56346,"journal":{"name":"Journal of Inborn Errors of Metabolism and Screening","volume":"4 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2326409816661358","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34784114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}