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Journal of Inherited Metabolic Disease

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https://www.readbyqxmd.com/read/27909832/news-and-views
#1
Sander M Houten
No abstract text is available yet for this article.
December 1, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27905001/guidelines-for-diagnosis-and-management-of-the-cobalamin-related-remethylation-disorders-cblc-cbld-cble-cblf-cblg-cblj-and-mthfr-deficiency
#2
Martina Huemer, Daria Diodato, Bernd Schwahn, Manuel Schiff, Anabela Bandeira, Jean-Francois Benoist, Alberto Burlina, Roberto Cerone, Maria L Couce, Angeles Garcia-Cazorla, Giancarlo la Marca, Elisabetta Pasquini, Laura Vilarinho, James D Weisfeld-Adams, Viktor Kožich, Henk Blom, Matthias R Baumgartner, Carlo Dionisi-Vici
BACKGROUND: Remethylation defects are rare inherited disorders in which impaired remethylation of homocysteine to methionine leads to accumulation of homocysteine and perturbation of numerous methylation reactions. OBJECTIVE: To summarise clinical and biochemical characteristics of these severe disorders and to provide guidelines on diagnosis and management. DATA SOURCES: Review, evaluation and discussion of the medical literature (Medline, Cochrane databases) by a panel of experts on these rare diseases following the GRADE approach...
November 30, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27896524/guidelines-on-homocystinurias-and-methylation-defects-a-harmonized-approach-to-diagnosis-and-management
#3
EDITORIAL
Eva Morava
No abstract text is available yet for this article.
November 28, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27878409/analysis-of-the-functional-muscle-bone-unit-of-the-forearm-in-patients-with-phenylketonuria-by-peripheral-quantitative-computed-tomography
#4
Daniela Choukair, Carolin Kneppo, Reinhard Feneberg, Eckhard Schönau, Martin Lindner, Stefan Kölker, Georg F Hoffmann, Burkhard Tönshoff
Bone disease in patients with phenylketonuria (PKU) is incompletely characterized. We therefore analyzed, in a cross-sectional study radius macroscopic bone architecture and forearm muscle size by peripheral quantitative computed tomography (pQCT) and muscle strength by hand dynamometry in a large cohort (n = 56) of adolescent and adult patients with PKU aged 26.0 ± 8.9 (range, 11.8-41.5) years. Data were compared with a reference population (n = 700) from the DONALD study using identical methodology...
November 22, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27858262/international-clinical-guideline-for-the-management-of-classical-galactosemia-diagnosis-treatment-and-follow-up
#5
Lindsey Welling, Laurie E Bernstein, Gerard T Berry, Alberto B Burlina, François Eyskens, Matthias Gautschi, Stephanie Grünewald, Cynthia S Gubbels, Ina Knerr, Philippe Labrune, Johanna H van der Lee, Anita MacDonald, Elaine Murphy, Pat A Portnoi, Katrin Õunap, Nancy L Potter, M Estela Rubio-Gozalbo, Jessica B Spencer, Inge Timmers, Eileen P Treacy, Sandra C Van Calcar, Susan E Waisbren, Annet M Bosch
Classical galactosemia (CG) is an inborn error of galactose metabolism. Evidence-based guidelines for the treatment and follow-up of CG are currently lacking, and treatment and follow-up have been demonstrated to vary worldwide. To provide patients around the world the same state-of-the-art in care, members of The Galactosemia Network (GalNet) developed an evidence-based and internationally applicable guideline for the diagnosis, treatment, and follow-up of CG. The guideline was developed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system...
November 17, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27853989/proposed-recommendations-for-diagnosing-and-managing-individuals-with-glutaric-aciduria-type-i-second-revision
#6
REVIEW
Nikolas Boy, Chris Mühlhausen, Esther M Maier, Jana Heringer, Birgit Assmann, Peter Burgard, Marjorie Dixon, Sandra Fleissner, Cheryl R Greenberg, Inga Harting, Georg F Hoffmann, Daniela Karall, David M Koeller, Michael B Krawinkel, Jürgen G Okun, Thomas Opladen, Roland Posset, Katja Sahm, Johannes Zschocke, Stefan Kölker
Glutaric aciduria type I (GA-I; synonym, glutaric acidemia type I) is a rare inherited metabolic disease caused by deficiency of glutaryl-CoA dehydrogenase located in the catabolic pathways of L-lysine, L-hydroxylysine, and L-tryptophan. The enzymatic defect results in elevated concentrations of glutaric acid, 3-hydroxyglutaric acid, glutaconic acid, and glutaryl carnitine in body tissues, which can be reliably detected by gas chromatography/mass spectrometry (organic acids) and tandem mass spectrometry (acylcarnitines)...
November 16, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27853988/antenatal-manifestations-of-inborn-errors-of-metabolism-prenatal-imaging-findings
#7
Laurent Guibaud, Sophie Collardeau-Frachon, Audrey Lacalm, Mona Massoud, Massimiliano Rossi, Marie Pierre Cordier, Christine Vianey-Saban
Prenatal manifestations of inborn errors of metabolism (IEM) are related to severe disorders involving metabolic pathways active in the fetal period and not compensated by maternal or placental metabolism. Some prenatal imaging findings can be suggestive of such conditions-especially in cases of consanguinity and/or recurrence of symptoms-after exclusion of the most frequent nonmetabolic etiologies. Most of these prenatal imaging findings are nonspecific. They include mainly ascites and hydrops fetalis, intrauterine growth restriction (IUGR), central nervous system (CNS) anomalies, echogenic kidneys, epiphyseal stippling, craniosynostosis, and a wide spectrum of dysostoses...
November 16, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27837294/the-galactosemia-network-galnet
#8
LETTER
M E Rubio-Gozalbo, A M Bosch, A Burlina, G T Berry, E P Treacy
No abstract text is available yet for this article.
November 11, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27832417/lethal-neonatal-hyperammonemia-in-severe-ornithine-transcarbamylase-otc-deficiency-compounded-by-large-hepatic-portosystemic-shunt
#9
Lauren Beard, Erica Wymore, Laura Fenton, Curtis R Coughlin, James D Weisfeld-Adams
No abstract text is available yet for this article.
November 10, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27832416/slow-continuous-enzyme-replacement-via-spinal-csf-in-dogs-with-the-paediatric-onset-neurodegenerative-disease-mps-iiia
#10
Barbara King, Neil R Marshall, Sofia Hassiotis, Paul J Trim, Justin Tucker, Kathryn Hattersley, Marten F Snel, Robert D Jolly, John J Hopwood, Kim M Hemsley
Intra-cerebrospinal fluid (CSF) injection of recombinant human lysosomal enzyme is a potential treatment strategy for several neurodegenerative lysosomal storage disorders including Sanfilippo syndrome (Mucopolysaccharidosis type IIIA; MPS IIIA). Here we have utilised the MPS IIIA Huntaway dog model to compare the effectiveness of the repeated intermittent bolus injection strategy being used in the trials with an alternate approach; slow, continual infusion of replacement enzyme (recombinant human sulphamidase; rhSGSH) into the spinal CSF using a SynchroMed II® pump attached to a spinal infusion cannula...
November 10, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27832415/household-financial-burden-of-phenylketonuria-and-its-impact-on-treatment-in-china-a-cross-sectional-study
#11
Lin Wang, Hui Zou, Fang Ye, Kundi Wang, Xiaowen Li, Zhihua Chen, Jie Chen, Bingjuan Han, Weimin Yu, Chun He, Ming Shen
BACKGROUND: Phenylketonuria (PKU) is a rare inborn disease, which, untreated, leading to severe neurobehavioral dysfunction. Considering its complexity, the management of PKU may bring a formidable economic burden to parents and caregivers. It is still unknown what the out-of-pocket expenses are for a patient with PKU in China. This paper explores the household financial burden of classical PKU and its impact on Chinese families in a quantitative manner for the first time. METHODS: A non-interventional and observational study was conducted at the China-Japan Friendship Hospital, one of the national centers for inherited metabolic disorders in China...
November 10, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27832414/herpetiform-keratitis-and-palmoplantar-hyperkeratosis-warning-signs-for-richner-hanhart-syndrome
#12
Diogo C Soares, Mariana N Stroparo, Yu C Lian, Cristina Y Takakura, Sabrina Wolf, Regina Betz, Chong A Kim
Richner-Hanhart syndrome (RHS, tyrosinemia type II) is a rare, autosomal recessive inborn error of tyrosine metabolism caused by tyrosine aminotransferase deficiency. It is characterized by photophobia due to keratitis, painful palmoplantar hyperkeratosis, variable mental retardation, and elevated serum tyrosine levels. Patients are often misdiagnosed with herpes simplex keratitis. We report on a a boy from Brazil who presented with bilateral keratitis secondary to RHS, which had earlier been misdiagnosed as herpes simplex keratitis...
November 10, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27830424/ketones-and-inborn-errors-of-metabolism-old-friends-revisited
#13
EDITORIAL
Rob C I Wüst, Gepke Visser, Ronald J A Wanders, Riekelt H Houtkooper
No abstract text is available yet for this article.
November 9, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27783170/assessment-of-ataxia-phenotype-in-a-new-mouse-model-of-galactose-1-phosphate-uridylyltransferase-galt-deficiency
#14
Wyman Chen, Rose Caston, Bijina Balakrishnan, Anwer Siddiqi, Kamalpreet Parmar, Manshu Tang, Merry Feng, Kent Lai
Despite adequate dietary management, patients with classic galactosemia continue to have increased risks of cognitive deficits, speech dyspraxia, primary ovarian insufficiency, and abnormal motor development. A recent evaluation of a new galactose-1 phosphate uridylyltransferase (GALT)-deficient mouse model revealed reduced fertility and growth restriction. These phenotypes resemble those seen in human patients. In this study, we further assess the fidelity of this new mouse model by examining the animals for the manifestation of a common neurological sequela in human patients: cerebellar ataxia...
October 25, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27778219/guidelines-for-the-diagnosis-and-management-of-cystathionine-beta-synthase-deficiency
#15
Andrew A M Morris, Viktor Kožich, Saikat Santra, Generoso Andria, Tawfeg I M Ben-Omran, Anupam B Chakrapani, Ellen Crushell, Mick J Henderson, Michel Hochuli, Martina Huemer, Miriam C H Janssen, Francois Maillot, Philip D Mayne, Jenny McNulty, Tara M Morrison, Helene Ogier, Siobhan O'Sullivan, Markéta Pavlíková, Isabel Tavares de Almeida, Allyson Terry, Sufin Yap, Henk J Blom, Kimberly A Chapman
Cystathionine beta-synthase (CBS) deficiency is a rare inherited disorder in the methionine catabolic pathway, in which the impaired synthesis of cystathionine leads to accumulation of homocysteine. Patients can present to many different specialists and diagnosis is often delayed. Severely affected patients usually present in childhood with ectopia lentis, learning difficulties and skeletal abnormalities. These patients generally require treatment with a low-methionine diet and/or betaine. In contrast, mildly affected patients are likely to present as adults with thromboembolism and to respond to treatment with pyridoxine...
October 24, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27766444/flunarizine-rescues-reduced-lifespan-in-cln3-triple-knock-out-caenorhabditis-elegans-model-of-batten-disease
#16
Young Joon Kwon, Marni J Falk, Michael J Bennett
CLN3 disease (Spielmeyer-Vogt-Sjogren-Batten disease, previously known as classic juvenile neuronal ceroid lipofuscinosis, NCL) is a pediatric-onset progressive neurodegenerative disease characterized by progressive vision loss, seizures, loss of cognitive and motor function, and early death. While no precise biochemical mechanism or therapies are known, the pathogenesis of CLN3 disease involves intracellular calcium accumulation that may trigger apoptosis. Our prior work in in vitro cell models of CLN3 deficiency suggested that FDA-approved calcium channel antagonists may have therapeutic value...
October 20, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27761676/multicompartment-analysis-of-protein-restricted-phenylketonuric-mice-reveals-amino-acid-imbalances-in-brain
#17
Kara R Vogel, Erland Arning, Teodoro Bottiglieri, K Michael Gibson
BACKGROUND: The mainstay of therapy for phenylketonuria (PKU) remains dietary protein restriction. Developmental and neurocognitive outcomes for patients, however, remain suboptimal. We tested the hypothesis that mice with PKU receiving protein-restricted diets would reveal disruptions of brain amino acids that shed light on these neurocognitive deficits. METHOD: Phenylalanine hydroxylase-deficient (PKU) mice and parallel controls (both wild-type and heterozygous) were fed custom diets containing 18, 6, and 4 % protein for 3 weeks, after which tissues (brain, liver, sera) were collected for amino acid analysis profiling...
October 19, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27743313/functional-characterization-of-missense-mutations-in-severe-methylenetetrahydrofolate-reductase-deficiency-using-a-human-expression-system
#18
Patricie Burda, Terttu Suormala, Dorothea Heuberger, Alexandra Schäfer, Brian Fowler, D Sean Froese, Matthias R Baumgartner
5,10-Methylenetetrahydrofolate reductase (MTHFR) catalyzes the NADPH-dependent reduction of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate using FAD as the cofactor. Severe MTHFR deficiency is the most common inborn error of folate metabolism, resulting in hyperhomocysteinemia and homocystinuria. Approximately 70 missense mutations have been described that cause severe MTHFR deficiency, however, in most cases their mechanism of dysfunction remains unclear. Few studies have investigated mutational specific defects; most of these assessing only activity levels from a handful of mutations using heterologous expression...
October 14, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27743312/angiotensin-receptor-blockade-mediated-amelioration-of-mucopolysaccharidosis-type-i-cardiac-and-craniofacial-pathology
#19
Mark J Osborn, Beau R Webber, Ronald T McElmurry, Kyle D Rudser, Anthony P DeFeo, Michael Muradian, Anna Petryk, Benedikt Hallgrimsson, Bruce R Blazar, Jakub Tolar, Elizabeth A Braunlin
Mucopolysaccharidosis type I (MPS IH) is a lysosomal storage disease (LSD) caused by inactivating mutations to the alpha-L-iduronidase (IDUA) gene. Treatment focuses on IDUA enzyme replacement and currently employed methods can be non-uniform in their efficacy particularly for the cardiac and craniofacial pathology. Therefore, we undertook efforts to better define the pathological cascade accounting for treatment refractory manifestations and demonstrate a role for the renin angiotensin system (RAS) using the IDUA(-/-) mouse model...
October 14, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27718145/newborn-screening-for-mucopolysaccharidoses-a-pilot-study-of-measurement-of-glycosaminoglycans-by-tandem-mass-spectrometry
#20
Francyne Kubaski, Robert W Mason, Akiko Nakatomi, Haruo Shintaku, Li Xie, Naomi N van Vlies, Heather Church, Roberto Giugliani, Hironori Kobayashi, Seiji Yamaguchi, Yasuyuki Suzuki, Tadao Orii, Toshiyuki Fukao, Adriana M Montaño, Shunji Tomatsu
BACKGROUND: Mucopolysaccharidoses (MPS) are a group of inborn errors of metabolism that are progressive and usually result in irreversible skeletal, visceral, and/or brain damage, highlighting a need for early diagnosis. METHODS: This pilot study analyzed 2862 dried blood spots (DBS) from newborns and 14 DBS from newborn patients with MPS (MPS I, n = 7; MPS II, n = 2; MPS III, n = 5). Disaccharides were produced from polymer GAGs by digestion with chondroitinase B, heparitinase, and keratanase II...
October 7, 2016: Journal of Inherited Metabolic Disease
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