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Journal of Inherited Metabolic Disease

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https://www.readbyqxmd.com/read/28936688/news-and-views
#1
Sander M Houten
No abstract text is available yet for this article.
September 21, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28924877/diagnostic-approach-to-neurotransmitter-monoamine-disorders-experience-from-clinical-biochemical-and-genetic-profiles
#2
Alice Kuster, Jean-Baptiste Arnoux, Magalie Barth, Delphine Lamireau, Nada Houcinat, Cyril Goizet, Bérénice Doray, Stéphanie Gobin, Manuel Schiff, Aline Cano, Daniel Amsallem, Christine Barnerias, Boris Chaumette, Marion Plaze, Abdelhamid Slama, Christine Ioos, Isabelle Desguerre, Anne-Sophie Lebre, Pascale de Lonlay, Laurence Christa
BACKGROUND AND AIM: To improve the diagnostic work-up of patients with diverse neurological diseases, we have elaborated specific clinical and CSF neurotransmitter patterns. METHODS: Neurotransmitter determinations in CSF from 1200 patients revealed abnormal values in 228 (19%) cases. In 54/228 (24%) patients, a final diagnosis was identified. RESULTS: We have reported primary (30/54, 56%) and secondary (24/54, 44%) monoamine neurotransmitter disorders...
September 18, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28913702/impaired-fertility-and-motor-function-in-a-zebrafish-model-for-classic-galactosemia
#3
Jo M Vanoevelen, M Estela Rubio-Gozalbo, Britt van Erven, Jörgen Bierau, Xiaoping Huang, Gerard T Berry, Rein Vos, Ana I Coelho
Classic galactosemia is a genetic disorder of galactose metabolism, caused by severe deficiency of galactose-1-phosphate uridylyltransferase (GALT) enzyme activity due to mutations of the GALT gene. Its pathogenesis is still not fully elucidated, and a therapy that prevents chronic impairments is lacking. In order to move research forward, there is a high need for a novel animal model, which allows organ studies throughout development and high-throughput screening of pharmacologic compounds. Here, we describe the generation of a galt knockout zebrafish model and present its phenotypical characterization...
September 14, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28905140/long-term-metabolic-follow-up-and-clinical-outcome-of-35-patients-with-maple-syrup-urine-disease
#4
Marie-Thérèse Abi-Wardé, Célina Roda, Jean-Baptiste Arnoux, Aude Servais, Florence Habarou, Anais Brassier, Clément Pontoizeau, Valérie Barbier, Manuella Bayart, Virginie Leboeuf, Bernadette Chadefaux-Vekemans, Sandrine Dubois, Murielle Assoun, Claire Belloche, Jean-Meidi Alili, Marie-Caroline Husson, Fabrice Lesage, Laurent Dupic, Benoit Theuil, Chris Ottolenghi, Pascale de Lonlay
BACKGROUND: Maple syrup urine disease (MSUD) is a rare disease that requires a protein-restricted diet for successful management. Little is known, however, about the psychosocial outcome of MSUD patients. This study investigates the relationship between metabolic and clinical parameters and psychosocial outcomes in a cohort of patients with neonatal-onset MSUD. METHODS: Data on academic achievement, psychological care, family involvement, and biochemical parameters were collected from the medical records of neonatal MSUD patients treated at Necker Hospital (Paris) between 1964 and 2013...
September 13, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28900816/critical-appraisal-of-genotype-assessment-in-molybdenum-cofactor-deficiency
#5
Katrin Hinderhofer, Konstantin Mechler, Georg F Hoffmann, Anette Lampert, William K Mountford, Markus Ries
INTRODUCTION: Molybdenum cofactor deficiency (MoCD) is an ultra-orphan, life-threatening disease. Substrate substitution therapy has successfully been performed in single cases of MoCD type A and clinical trials are underway for drug registration. We present an innovative approach for classification of genotype severity to test the hypothesis that milder sequence variants in MoCD result in a less severe disease phenotype quantitated by patient survival. METHODS: All available worldwide published cases with clinical and genetic data were included (n = 40)...
September 12, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28900784/liver-involvement-in-urea-cycle-disorders-a-review-of-the-literature
#6
REVIEW
Adrien Bigot, Michel C Tchan, Benjamin Thoreau, Hélène Blasco, François Maillot
Urea cycle disorders (UCDs) are inborn errors of metabolism of the nitrogen detoxification pathway and encompass six principal enzymatic deficiencies. The aging of UCD patients leads to a better knowledge of the long-term natural history of the condition and to the reporting of previously unnoticed manifestations. Despite historical evidence of liver involvement in UCDs, little attention has been paid to this organ until recently. Hence, we reviewed the available scientific evidence on acute and chronic liver dysfunction and liver carcinogenesis in UCDs and discuss their pathophysiology...
September 12, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28894950/autism-spectrum-disorder-an-early-and-frequent-feature-in-cerebrotendinous-xanthomatosis
#7
Bianca M L Stelten, Olivier Bonnot, Hidde H Huidekoper, Francjan J van Spronsen, Peter M van Hasselt, Leo A J Kluijtmans, Ron A Wevers, Aad Verrips
BACKGROUND: Cerebrotendinous xanthomatosis (CTX) is an autosomal recessively inherited inborn error of metabolism (IEM) due to mutations in the CYP27A1 gene. The clinical picture ranges from being nearly asymptomatic in early childhood, up to severe disability at adult age. Infantile-onset diarrhea and juvenile-onset cataract are the earliest symptoms in childhood. In the current study, we evaluated the presence of autism spectrum disorder (ASD) in a large cohort of CTX patients. METHODS: We performed a retrospective patient file study in 77 genetically confirmed Dutch CTX patients to determine the frequency of ASD...
September 11, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28887757/survival-in-idursulfase-treated-and-untreated-patients-with-mucopolysaccharidosis-type-ii-data-from-the-hunter-outcome-survey-hos
#8
Barbara K Burton, Virginie Jego, Jaromir Mikl, Simon A Jones
Mucopolysaccharidosis type II (MPS II; Hunter syndrome; OMIM 309900) is a life-limiting, multisystemic disease with varying presentation and severity. Enzyme replacement therapy with intravenous idursulfase (EC 3.1.6.13) has been available since 2006. Data from the Hunter Outcome Survey (July 2016) were used to compare survival in idursulfase-treated (n = 800) and untreated (n = 95) male patients followed prospectively in this multinational, observational registry. Median age at symptom onset was similar for the treated and untreated groups (1...
September 8, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28871440/triheptanoin-versus-trioctanoin-for-long-chain-fatty-acid-oxidation-disorders-a-double-blinded-randomized-controlled-trial
#9
Melanie B Gillingham, Stephen B Heitner, Julie Martin, Sarah Rose, Amy Goldstein, Areeg Hassan El-Gharbawy, Stephanie Deward, Michael R Lasarev, Jim Pollaro, James P DeLany, Luke J Burchill, Bret Goodpaster, James Shoemaker, Dietrich Matern, Cary O Harding, Jerry Vockley
BACKGROUND: Observational reports suggest that supplementation that increases citric acid cycle intermediates via anaplerosis may have therapeutic advantages over traditional medium-chain triglyceride (MCT) treatment of long-chain fatty acid oxidation disorders (LC-FAODs) but controlled trials have not been reported. The goal of our study was to compare the effects of triheptanoin (C7), an anaplerotic seven-carbon fatty acid triglyceride, to trioctanoin (C8), an eight-carbon fatty acid triglyceride, in patients with LC-FAODs...
September 4, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28865037/the-presence-of-anaemia-negatively-influences-survival-in-patients-with-polg-disease
#10
Omar Hikmat, Tzoulis Charalampos, Claus Klingenberg, Magnhild Rasmussen, Chantal M E Tallaksen, Eylert Brodtkorb, Torunn Fiskerstrand, Robert McFarland, Shamima Rahman, Laurence A Bindoff
BACKGROUND: Mitochondria play an important role in iron metabolism and haematopoietic cell homeostasis. Recent studies in mice showed that a mutation in the catalytic subunit of polymerase gamma (POLG) was associated with haematopoietic dysfunction including anaemia. The aim of this study was to analyse the frequency of anaemia in a large cohort of patients with POLG related disease. METHODS: We conducted a multi-national, retrospective study of 61 patients with confirmed, pathogenic biallelic POLG mutations from six centres, four in Norway and two in the United Kingdom...
September 1, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28856627/autism-spectrum-disorders-in-propionic-acidemia-patients
#11
Caroline Dejean de la Bâtie, Valérie Barbier, Célina Roda, Anaïs Brassier, Jean-Baptiste Arnoux, Vassili Valayannopoulos, Anne-Sophie Guemann, Clément Pontoizeau, Stéphanie Gobin, Florence Habarou, Florence Lacaille, Jean-Paul Bonnefont, Pierre Canouï, Chris Ottolenghi, Pascale De Lonlay, Lisa Ouss
Propionic acidemia is the result of a deficiency in propionyl-CoA carboxylase activity. Chronic neurologic and cognitive complications frequently occur, but the psychiatric evolution of the disorder is not well documented. We conducted a pedopsychiatric evaluation of 19 children, adolescents and young adults, aged between 2 and 25 years, using ADI-R, CARS-T, as well as ADOS when autism spectrum disorder was suspected. Previous psychometric examinations were also taken into consideration. Thirteen patients had an IQ < 80...
August 30, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28849344/functional-characterisation-of-peroxisomal-%C3%AE-oxidation-disorders-in-fibroblasts-using-lipidomics
#12
Katharina Herzog, Mia L Pras-Raves, Sacha Ferdinandusse, Martin A T Vervaart, Angela C M Luyf, Antoine H C van Kampen, Ronald J A Wanders, Hans R Waterham, Frédéric M Vaz
Peroxisomes play an important role in a variety of metabolic pathways, including the α- and β-oxidation of fatty acids, and the biosynthesis of ether phospholipids. Single peroxisomal enzyme deficiencies (PEDs) are a group of peroxisomal disorders in which either a peroxisomal matrix enzyme or a peroxisomal membrane transporter protein is deficient. To investigate the functional consequences of specific enzyme deficiencies on the lipidome, we performed lipidomics using cultured skin fibroblasts with different defects in the β-oxidation of very long-chain fatty acids, including ABCD1- (ALD), acyl-CoA oxidase 1 (ACOX1)-, D-bifunctional protein (DBP)-, and acyl-CoA binding domain containing protein 5 (ACBD5)-deficient cell lines...
August 28, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28842777/advances-in-metabolome-information-retrieval-turning-chemistry-into-biology-part-ii-biological-information-recovery
#13
Abdellah Tebani, Carlos Afonso, Soumeya Bekri
This work reports the second part of a review intending to give the state of the art of major metabolic phenotyping strategies. It particularly deals with inherent advantages and limits regarding data analysis issues and biological information retrieval tools along with translational challenges. This Part starts with introducing the main data preprocessing strategies of the different metabolomics data. Then, it describes the main data analysis techniques including univariate and multivariate aspects. It also addresses the challenges related to metabolite annotation and characterization...
August 25, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28840392/advances-in-metabolome-information-retrieval-turning-chemistry-into-biology-part-i-analytical-chemistry-of-the-metabolome
#14
Abdellah Tebani, Carlos Afonso, Soumeya Bekri
Metabolites are small molecules produced by enzymatic reactions in a given organism. Metabolomics or metabolic phenotyping is a well-established omics aimed at comprehensively assessing metabolites in biological systems. These comprehensive analyses use analytical platforms, mainly nuclear magnetic resonance spectroscopy and mass spectrometry, along with associated separation methods to gather qualitative and quantitative data. Metabolomics holistically evaluates biological systems in an unbiased, data-driven approach that may ultimately support generation of hypotheses...
August 24, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28836033/predictability-and-inconsistencies-in-the-cognitive-outcome-of-early-treated-pku-patients
#15
Filippo Manti, Francesca Nardecchia, Sabrina Paci, Flavia Chiarotti, Claudia Carducci, Carla Carducci, Silvia Dalmazzone, Graziella Cefalo, Elisabetta Salvatici, Giuseppe Banderali, Vincenzo Leuzzi
Long-term cognitive outcome and treatment of adult early treated (ET)PKU patients is a main issue in PKU research. We questioned whether the intellectual development of ETPKU patients is stable and to what extent its variation may be predicted by the quality of metabolic control. The aims of the present longitudinal retrospective study were to assess in young adult ETPKU patients: i) the relationship between IQ and metabolic control during the first two decades of life; and ii) the intra- and interindividual variability in the developmental trajectory which cannot be predicted by the disease's biomarkers...
August 23, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28801758/prkag2-mutations-presenting-in-infancy
#16
Rachel D Torok, Stephanie L Austin, Chanika Phornphutkul, Kathleen M Rotondo, Deeksha Bali, Gregory H Tatum, Stephanie B Wechsler, Anne F Buckley, Priya S Kishnani
PRKAG2 encodes the γ2 subunit of AMP-activated protein kinase (AMPK), which is an important regulator of cardiac metabolism. Mutations in PRKAG2 cause a cardiac syndrome comprising ventricular hypertrophy, pre-excitation, and progressive conduction-system disease, which is typically not diagnosed until adolescence or young adulthood. However, significant variability exists in the presentation and outcomes of patients with PRKAG2 mutations, with presentation in infancy being underrecognized. The diagnosis of PRKAG2 can be challenging in infants, and we describe our experience with three patients who were initially suspected to have Pompe disease yet ultimately diagnosed with mutations in PRKAG2...
August 11, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28801717/vitamin-b6-is-essential-for-serine-de-novo-biosynthesis
#17
Rúben J Ramos, Mia L Pras-Raves, Johan Gerrits, Maria van der Ham, Marcel Willemsen, Hubertus Prinsen, Boudewijn Burgering, Judith J Jans, Nanda M Verhoeven-Duif
Pyridoxal 5'-phosphate (PLP), the metabolically active form of vitamin B6, plays an essential role in brain metabolism as a cofactor in numerous enzyme reactions. PLP deficiency in brain, either genetic or acquired, results in severe drug-resistant seizures that respond to vitamin B6 supplementation. The pathogenesis of vitamin B6 deficiency is largely unknown. To shed more light on the metabolic consequences of vitamin B6 deficiency in brain, we performed untargeted metabolomics in vitamin B6-deprived Neuro-2a cells...
August 11, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28762107/pmm2-cdg-and-sensorineural-hearing-loss
#18
LETTER
Çiğdem Seher Kasapkara, Zeren Barış, Mustafa Kılıç, Deniz Yüksel, Lies Keldermans, Gert Matthijs, Jaak Jaeken
No abstract text is available yet for this article.
July 31, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28726069/loss-of-sirtuin-4-leads-to-elevated-glucose-and-leucine-stimulated-insulin-levels-and-accelerated-age-induced-insulin-resistance-in-multiple-murine-genetic-backgrounds
#19
Frank K Huynh, Xiaoke Hu, Zhihong Lin, James D Johnson, Matthew D Hirschey
Several inherited metabolic disorders are associated with an accumulation of reactive acyl-CoA metabolites that can non-enzymatically react with lysine residues to modify proteins. While the role of acetylation is well-studied, the pathophysiological relevance of more recently discovered acyl modifications, including those found in inherited metabolic disorders, warrants further investigation. We recently showed that sirtuin 4 (SIRT4) removes glutaryl, 3-hydroxy-3-methylglutaryl, 3-methylglutaryl, and 3-methylglutaconyl modifications from lysine residues...
July 19, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28726068/cardiac-complications-of-congenital-disorders-of-glycosylation-cdg-a-systematic-review-of-the-literature
#20
REVIEW
D Marques-da-Silva, R Francisco, D Webster, V Dos Reis Ferreira, J Jaeken, T Pulinilkunnil
Congenital disorders of glycosylation (CDG) are inborn errors of metabolism due to protein and lipid hypoglycosylation. This rapidly growing family of genetic diseases comprises 103 CDG types, with a broad phenotypic diversity ranging from mild to severe poly-organ -system dysfunction. This literature review summarizes cardiac involvement, reported in 20% of CDG. CDG with cardiac involvement were divided according to the associated type of glycosylation: N-glycosylation, O-glycosylation, dolichol synthesis, glycosylphosphatidylinositol (GPI)-anchor biosynthesis, COG complex, V-ATPase complex, and other glycosylation pathways...
July 19, 2017: Journal of Inherited Metabolic Disease
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