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Molecular Genetics and Metabolism Reports

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https://www.readbyqxmd.com/read/28540187/case-report-of-treatment-experience-with-idursulfase-beta-hunterase-in-an-adolescent-patient-with-mps-ii
#1
Lock-Hock Ngu, Winnie Ong Peitee, Huey Yin Leong, Hui Bein Chew
Mucopolysaccharidosis (MPS) II or Hunter syndrome is a chronic, progressive, multi-systemic illness associated with significant morbidity and early mortality. Available evidence in Asian populations shows that Hunter syndrome has a mean age of onset of 2 to 5 years and a life expectancy of 13 years in more severely affected individuals, with respiratory failure reported as the leading cause of death. Enzyme replacement therapy (ERT) with idursulfase (Elaprase, Shire Pharmaceuticals) and idursulfase beta (Hunterase, Green Cross Corp) are the only approved treatment for patients with MPS II...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28540186/novel-recessive-mutations-in-coq4-cause-severe-infantile-cardiomyopathy-and-encephalopathy-associated-with-coq10-deficiency
#2
Neal Sondheimer, Stacy Hewson, Jessie M Cameron, Gino R Somers, Jane Dunning Broadbent, Marcello Ziosi, Catarina Maria Quinzii, Ali B Naini
Coenzyme Q10 (CoQ10) or ubiquinone is one of the two electron carriers in the mitochondrial respiratory chain which has an essential role in the process of oxidative phosphorylation. Defects in CoQ10 synthesis are usually associated with the impaired function of CoQ10-dependent complexes I, II and III. The recessively transmitted CoQ10 deficiency has been associated with a number of phenotypically and genetically heterogeneous groups of disorders manifesting at variable age of onset. The infantile, multisystemic presentation is usually caused by mutations in genes directly involved in CoQ10 biosynthesis...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28275552/dietary-practices-in-isovaleric-acidemia-a-european-survey
#3
A Pinto, A Daly, S Evans, M F Almeida, M Assoun, A Belanger-Quintana, S Bernabei, S Bollhalder, D Cassiman, H Champion, H Chan, J Dalmau, F de Boer, C de Laet, A de Meyer, A Desloovere, A Dianin, M Dixon, K Dokoupil, S Dubois, F Eyskens, A Faria, I Fasan, E Favre, F Feillet, A Fekete, G Gallo, C Gingell, J Gribben, K Kaalund-Hansen, N Horst, C Jankowski, R Janssen-Regelink, I Jones, C Jouault, G E Kahrs, I L Kok, A Kowalik, C Laguerre, S Le Verge, R Lilje, C Maddalon, D Mayr, U Meyer, A Micciche, M Robert, J C Rocha, H Rogozinski, C Rohde, K Ross, I Saruggia, A Schlune, K Singleton, E Sjoqvist, L H Stolen, A Terry, C Timmer, L Tomlinson, A Tooke, K Vande Kerckhove, E van Dam, T van den Hurk, L van der Ploeg, M van Driessche, M van Rijn, A van Teeffelen-Heithoff, A van Wegberg, C Vasconcelos, H Vestergaard, I Vitoria, D Webster, F J White, L White, H Zweers, A MacDonald
BACKGROUND: In Europe, dietary management of isovaleric acidemia (IVA) may vary widely. There is limited collective information about dietetic management. AIM: To describe European practice regarding the dietary management of IVA, prior to the availability of the E-IMD IVA guidelines (E-IMD 2014). METHODS: A cross-sectional questionnaire was sent to all European dietitians who were either members of the Society for the Study of Inborn Errors of Metabolism Dietitians Group (SSIEM-DG) or whom had responded to previous questionnaires on dietetic practice (n = 53)...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28275551/combination-of-klinefelter-syndrome-and-celiac-disease-a-case-report
#4
Ahmed Ramiz Baykan
Klinefelter syndrome (KS) is a chromosomal abnormality characterised by a 47, XXY karyotype associated with hypogonadism and infertility. We present a case of a 20-year-old patient who applied to our clinic because of growth deficiency and was concurrently diagnosed with Klinefelter syndrome and celiac disease.
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28271047/pretreatment-cognitive-and-neural-differences-between-sapropterin-dihydrochloride-responders-and-non-responders-with-phenylketonuria
#5
Zoë Hawks, Joshua Shimony, Jerrel Rutlin, Dorothy K Grange, Shawn E Christ, Desirée A White
Sapropterin dihydrochloride (BH4) reduces phenylalanine (Phe) levels and improves white matter integrity in a subset of individuals with phenylketonuria (PKU) known as "responders." Although prior research has identified biochemical and genotypic differences between BH4 responders and non-responders, cognitive and neural differences remain largely unexplored. To this end, we compared intelligence and white matter integrity prior to treatment with BH4 in 13 subsequent BH4 responders with PKU, 16 subsequent BH4 non-responders with PKU, and 12 healthy controls...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28243577/evaluation-of-impact-of-anti-idursulfase-antibodies-during-long-term-idursulfase-enzyme-replacement-therapy-in-mucopolysaccharidosis-ii-patients
#6
R Giugliani, P Harmatz, S A Jones, N J Mendelsohn, A Vellodi, Y Qiu, C J Hendriksz, S Vijayaraghavan, D A H Whiteman, A Pano
OBJECTIVES: This 109-week, nonrandomized, observational study of mucopolysaccharidosis II (MPS II) patients already enrolled in the Hunter Outcome Survey (HOS) (NCT00882921), assessed the long-term immunogenicity of idursulfase, and examined the effect of idursulfase-specific antibody generation on treatment safety (via infusion-related adverse events [IRAEs]) and pharmacodynamics (via urinary glycosaminoglycans [uGAGs]). METHODS: Male patients ≥ 5 years, enrolled in HOS regardless of idursulfase treatment status were eligible...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28243576/phenotypic-heterogeneity-of-a-compound-heterozygous-sucla2-mutation
#7
Gerard T Berry
No abstract text is available yet for this article.
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28540185/mitochondrial-myopathy-dysmorphism-exercise-induced-vomiting-and-tachycardia-the-mutation-m-4831g%C3%A2-%C3%A2-a
#8
Josef Finsterer, Sinda Zarrouk-Mahjoub
No abstract text is available yet for this article.
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28529890/misinformation-regarding-tandem-mass-spectrometric-vs-fluorometric-assays-to-screen-newborns-for-lsds
#9
David S Millington, Deeksha M Bali
No abstract text is available yet for this article.
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28529889/a-surviving-24-month-old-patient-with-neonatal-onset-carnitine-palmitoyltransferase-ii-deficiency
#10
Naohiro Ikeda, Shinsuke Maruyama, Kanna Nakano, Ryo Imakiire, Yumiko Ninomiya, Shunji Seki, Kosuke Yanagimoto, Yasuyuki Kakihana, Keiichi Hara, Go Tajima, Yasuhiro Okamoto, Yoshifumi Kawano
The early-onset form of carnitine palmitoyltransferase (CPT) II deficiency has severe outcomes; patients typically die during the newborn period. We report a case of neonatal-onset CPT II deficiency with prolonged survival, exceeding 24 months. The patient was successfully treated by continuous hemodialysis (CHD), which enabled her to overcome repeated crises. We suggest that early intensive treatment, including CHD, is a key for prolonged survival in patients with neonatal-onset CPT II deficiency.
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28516041/birth-weight-in-patients-with-mucopolysaccharidosis-type-ii-data-from-the-hunter-outcome-survey-hos
#11
Olaf Bodamer, Maurizio Scarpa, Christina Hung, Tom Pulles, Roberto Giugliani
There is a need to identify early disease markers to facilitate diagnosis of mucopolysaccharidosis type II (MPS II; Hunter syndrome). Mean birth weight and its association with disease severity was investigated in 609 patients enrolled in the Hunter Outcome Survey (HOS). This analysis indicated that birth weight is not an early marker of MPS II and is not associated with disease severity. It remains important to investigate the utility of other factors for early/pre-symptomatic diagnosis.
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28516040/a-newborn-case-with-carnitine-palmitoyltransferase-ii-deficiency-initially-judged-as-unaffected-by-acylcarnitine-analysis-soon-after-birth
#12
Kenji Yamada, Ryosuke Bo, Hironori Kobayashi, Yuki Hasegawa, Mako Ago, Seiji Fukuda, Seiji Yamaguchi, Takeshi Taketani
Carnitine palmitoyltransferase II (CPT-2) deficiency, an autosomal recessive disorder of fatty acid oxidation, can be detected by newborn screening using tandem mass spectrometry (TMS). Our case was a boy born at 38 weeks and 6 days of gestation via normal vaginal delivery; his elder sister was affected with CPT-2 deficiency. Acylcarnitine (AC) was analyzed in both dried blood spots (DBS) and serum 2 h after birth to determine whether the boy was also affected. His C16 and C18:1 AC levels in DBS were in the normal range, while his serum long-chain AC levels were marginally increased but lower than those of his sister...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28507907/effectiveness-of-enzyme-replacement-therapy-in-fabry-disease-long-term-experience-in-argentina
#13
Gustavo Cabrera, Juan Politei, Norberto Antongiovani, Hernán Amartino
Evidence regarding long term effectiveness of enzyme replacement therapy (ERT) in Fabry disease (FD) is needed. The aim of this study was to analyze in a cohort of FD patients in Argentina, the long term effectiveness of ERT on renal, cardiac and cerebrovascular parameters. METHODS: Patients with genetically proven FD were included from GADYTEF (Argentinean group for the treatment of FD) between 2001 and 2014. Renal, cardiac, and cerebral outcomes were prospectively studied in patients treated with ERT...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28491816/treatment-adherence-during-childhood-in-individuals-with-phenylketonuria-early-signs-of-treatment-discontinuation
#14
María Ignacia García, Gabriela Araya, Soledad Coo, Susan E Waisbren, Alicia de la Parra
INTRODUCTION: Phenylketonuria (PKU) is an autosomal recessive disorder characterized by a deficiency in phenylalanine (Phe) hydroxylase activity. Early diagnosis and continuous treatment with a low Phe diet prevents severe neurological and cognitive impairment. AIMS: 1. Analyze how treatment adherence evolves through infancy, childhood, and early adolescence in individuals with PKU. 2. Identify early signs of treatment discontinuation. METHODOLOGY: This longitudinal, retrospective study included 75 children diagnosed through newborn screening, ages 7 to 13 years...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28487826/oxidative-profile-exhibited-by-mucopolysaccharidosis-type-iva-patients-at-diagnosis-increased-keratan-urinary-levels
#15
Bruna Donida, Desirèe P Marchetti, Carlos Eduardo Diaz Jacques, Graziela Ribas, Marion Deon, Paula Manini, Helen Tais da Rosa, Dinara Jaqueline Moura, Jenifer Saffi, Roberto Giugliani, Carmen Regla Vargas
Morquio A disease (Mucopolysaccharidosis type IVA, MPS IVA) is one of the 11 mucopolysaccharidoses (MPSs), a heterogeneous group of inherited lysosomal storage disorders (LSDs) caused by deficiency in enzymes need to degrade glycosaminoglycans (GAGs). Morquio A is characterized by a decrease in N-acetylgalactosamine-6-sulfatase activity and subsequent accumulation of keratan sulfate and chondroitin 6-sulfate in cells and body fluids. As the pathophysiology of this LSD is not completely understood and considering the previous results of our group concerning oxidative stress in Morquio A patients receiving enzyme replacement therapy (ERT), the aim of this study was to investigate oxidative stress parameters in Morquio A patients at diagnosis...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28487825/evaluation-of-whole-genome-amplified-dna-to-decrease-material-expenditure-and-increase-quality
#16
Marie Bækvad-Hansen, Jonas Bybjerg-Grauholm, Jesper B Poulsen, Christine S Hansen, David M Hougaard, Mads V Hollegaard
AIM: The overall aim of this study is to evaluate whole genome amplification of DNA extracted from dried blood spot samples. We wish to explore ways of optimizing the amplification process, while decreasing the amount of input material and inherently the cost. Our primary focus of optimization is on the amount of input material, the amplification reaction volume, the number of replicates and amplification time and temperature. Increasing the quality of the amplified DNA and the subsequent results of array genotyping is a secondary aim of this project...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28480166/albuterol-as-an-adjunctive-treatment-to-enzyme-replacement-therapy-in-infantile-onset-pompe-disease
#17
Yin-Hsiu Chien, Wuh-Liang Hwu, Ni-Chung Lee, Fuu-Jen Tsai, Dwight D Koeberl, Wen-Hui Tsai, Pao-Chin Chiu, Chaw-Liang Chang
BACKGROUND: Early initiation of enzyme replacement therapy (ERT) with recombinant human acid alpha-glucosidase is an effective treatment for patients with infantile-onset Pompe disease (IOPD) but cannot prevent a slow progression of myopathy. Albuterol has been shown to be helpful in adult patients with Pompe disease, and therefore, we administered an open-label adjunctive therapy with albuterol in IOPD patients undergoing ERT. METHODS: Fourteen patients, aged 2 to 12 years, were enrolled in this study; all of them had a disease onset before 12 months of life, and 13 of them were ambulatory because of early initiation of ERT...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28443237/the-clinical-heterogeneity-of-late-onset-melas
#18
H K Atwal, J Gass, P R Blackburn, P S Atwal
No abstract text is available yet for this article.
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28417072/atypical-juvenile-presentation-of-gm2-gangliosidosis-ab-in-a-patient-compound-heterozygote-for-c-259g%C3%A2-%C3%A2-t-and-c-164c%C3%A2-%C3%A2-t-mutations-in-the-gm2a-gene
#19
Carla Martins, Catherine Brunel-Guitton, Anne Lortie, France Gauvin, Carlos R Morales, Grant A Mitchell, Alexey V Pshezhetsky
GM2-gangliosidosis, AB variant is an extremely rare autosomal recessive inherited disorder caused by mutations in the GM2A gene that encodes GM2 ganglioside activator protein (GM2AP). GM2AP is necessary for solubilisation of GM2 ganglioside in endolysosomes and its presentation to β-hexosaminidase A. Conversely GM2AP deficiency impairs lysosomal catabolism of GM2 ganglioside, leading to its storage in cells and tissues. We describe a 9-year-old child with an unusual juvenile clinical onset of GM2-gangliosidosis AB...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28417071/twenty-novel-mutations-in-bckdha-bckdhb-and-dbt-genes-in-a-cohort-of-52-saudi-arabian-patients-with-maple-syrup-urine-disease
#20
Faiqa Imtiaz, Abeer Al-Mostafa, Rabab Allam, Khushnooda Ramzan, Nada Al-Tassan, Asma I Tahir, Nouf S Al-Numair, Mohamed H Al-Hamed, Zuhair Al-Hassnan, Mohammad Al-Owain, Hamad Al-Zaidan, Mohammad Al-Amoudi, Alya Qari, Ameera Balobaid, Moeenaldeen Al-Sayed
Maple syrup urine disease (MSUD), an autosomal recessive inborn error of metabolism due to defects in the branched-chain α-ketoacid dehydrogenase (BCKD) complex, is commonly observed among other inherited metabolic disorders in the kingdom of Saudi Arabia. This report presents the results of mutation analysis of three of the four genes encoding the BCKD complex in 52 biochemically diagnosed MSUD patients originating from Saudi Arabia. The 25 mutations (20 novel) detected spanned across the entire coding regions of the BCKHDA, BCKDHB and DBT genes...
June 2017: Molecular Genetics and Metabolism Reports
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