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Inherited metabolic disorders

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https://www.readbyqxmd.com/read/28067471/traditional-and-novel-tools-to-probe-the-mitochondrial-metabolism-in-health-and-disease
#1
REVIEW
Yanfei Zhang, José L Avalos
Mitochondrial metabolism links energy production to other essential cellular processes such as signaling, cellular differentiation, and apoptosis. In addition to producing adenosine triphosphate (ATP) as an energy source, mitochondria are responsible for the synthesis of a myriad of important metabolites and cofactors such as tetrahydrofolate, α-ketoacids, steroids, aminolevulinic acid, biotin, lipoic acid, acetyl-CoA, iron-sulfur clusters, heme, and ubiquinone. Furthermore, mitochondria and their metabolism have been implicated in aging and several human diseases, including inherited mitochondrial disorders, cardiac dysfunction, heart failure, neurodegenerative diseases, diabetes, and cancer...
January 9, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28063767/peroxisomal-dysfunction-in-age-related-diseases
#2
REVIEW
Cynthia M Cipolla, Irfan J Lodhi
Peroxisomes carry out many key functions related to lipid and reactive oxygen species (ROS) metabolism. The fundamental importance of peroxisomes for health in humans is underscored by the existence of devastating genetic disorders caused by impaired peroxisomal function or lack of peroxisomes. Emerging studies suggest that peroxisomal function may also be altered with aging and contribute to the pathogenesis of a variety of diseases, including diabetes and its related complications, neurodegenerative disorders, and cancer...
January 4, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28057010/update-on-lysinuric-protein-intolerance-a-multi-faceted-disease-retrospective-cohort-analysis-from-birth-to-adulthood
#3
Wladimir Mauhin, Florence Habarou, Stéphanie Gobin, Aude Servais, Anaïs Brassier, Coraline Grisel, Célina Roda, Graziella Pinto, Despina Moshous, Fahd Ghalim, Pauline Krug, Nelly Deltour, Clément Pontoizeau, Sandrine Dubois, Murielle Assoun, Louise Galmiche, Jean-Paul Bonnefont, Chris Ottolenghi, Jacques de Blic, Jean-Baptiste Arnoux, Pascale de Lonlay
BACKGROUND: Lysinuric protein intolerance (LPI) is a rare metabolic disease resulting from recessive-inherited mutations in the SLC7A7 gene encoding the cationic amino-acids transporter subunit y(+)LAT1. The disease is characterised by protein-rich food intolerance with secondary urea cycle disorder, but symptoms are heterogeneous ranging from infiltrative lung disease, kidney failure to auto-immune complications. This retrospective study of all cases treated at Necker Hospital (Paris, France) since 1977 describes LPI in both children and adults in order to improve therapeutic management...
January 5, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28053874/long-term-outcome-of-isobutyryl-coa-dehydrogenase-deficiency-diagnosed-following-an-episode-of-ketotic-hypoglycaemia
#4
S Santra, A Macdonald, M A Preece, R K Olsen, B S Andresen
Isobutyryl-CoA Dehydrogenase Deficiency (IBDD) is an inherited disorder of valine metabolism caused by mutations in ACAD8. Most reported patients have been diagnosed through newborn screening programmes due to elevated C4-carnitine levels and appear clinically asymptomatic. One reported non-screened patient had dilated cardiomyopathy and anaemia at the age of two years. We report a 13 month old girl diagnosed with IBDD after developing hypoglycaemic encephalopathy (blood glucose 1.9 mmol/l) during an episode of rotavirus-induced gastroenteritis...
March 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28052950/sepsis-and-siderosis-yersinia-enterocolitica-and-hereditary-haemochromatosis
#5
Phoebe A Thwaites, Marion L Woods
A 60-year-old woman was admitted with sepsis, relative bradycardia, CT evidence of numerous small liver abscesses and 'skin bronzing' consistent with hereditary haemochromatosis (HH). Yersinia enterocolitica O:9 infection was confirmed by serology specimens taken 10 days apart. Iron overload was detected, and homozygous C282Y gene mutation confirmed HH. Liver biopsy revealed grade IV siderosis with micronodular cirrhosis. Haemochromatosis is a common, inherited disorder leading to iron overload that can produce end-organ damage from excess iron deposition...
January 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28050582/data-on-the-phosphorylation-state-of-the-catalytic-serine-of-enzymes-in-the-%C3%AE-d-phosphohexomutase-superfamily
#6
Yingying Lee, Cristina Furdui, Lesa J Beamer
Most enzymes in the α-D-phosphohexomutase superfamily catalyze the reversible conversion of 1- to 6-phosphosugars. They play important roles in carbohydrate and sugar nucleotide metabolism, and participate in the biosynthesis of polysaccharides, glycolipids, and other exoproducts. Mutations in genes encoding these enzymes are associated with inherited metabolic diseases in humans, including glycogen storage disease and congenital disorders of glycosylation. Enzymes in the superfamily share a highly conserved active site serine that participates in the multi-step phosphoryl transfer reaction...
February 2017: Data in Brief
https://www.readbyqxmd.com/read/28050459/cardiovascular-abnormalities-in-egyptian-children-with-mucopolysaccharidoses
#7
Laila Selim, Nehal Abdelhamid, Emad Salama, Amera Elbadawy, Iman Gamaleldin, Mohamed Abdelmoneim, Abeer Selim
INTRODUCTION: The Mucopolysaccharidoses (MPS) are rare inherited metabolic disorders. They are characterized by the progressive systemic deposition of Glycosaminoglycans (GAGs). GAGs accumulate in the myocardium and the cardiac valves. Enzyme Replacement Therapy (ERT) is available for MPS I, II, and VI. However, ERT does not appear to improve cardiac valve disease in patients with valve disease present at the start of ERT. AIM: To evaluate the cardiac involvement in Egyptian children with MPS...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28045594/human-hprt1-gene-and-the-lesch-nyhan-disease-substitution-of-alanine-for-glycine-and-inversely-in-the-hgprt-enzyme-protein
#8
Khue Vu Nguyen, Robert K Naviaux, William L Nyhan
Lesch-Nyhan disease (LND) is a rare X-linked inherited neurogenetic disorder of purine metabolism in which the enzyme, hypoxanthine-guanine phosphoribosyltransferase (HGprt) is defective. The authors report three novel independent mutations in the coding region of the HPRT1 gene from genomic DNA of (a) a carrier sister of two male patients with LND: c.569G>C, p.G190A in exon 8; and (b) two LND affected male patients unrelated to her who had two mutations: c.648delC, p.Y216X, and c.653C>G, p.A218G in exon 9...
January 3, 2017: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/28030845/withdrawn-could-some-epigenetic-modifications-hold-the-key-to-opposing-the-metabolic-syndrome
#9
REVIEW
Giovanni Tarantino, Matteo Nicola Di Minno, Carmine Finelli
Ahead of Print article withdrawn by publisher.
December 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/28018459/a-novel-mutation-of-clcnkb-in-a-korean-patient-of-mixed-phenotype-of-bartter-gitelman-syndrome
#10
Hee-Won Cho, Sang Taek Lee, Heeyeon Cho, Hae Il Cheong
Bartter syndrome (BS) is an inherited renal tubular disorder characterized by low or normal blood pressure, hypokalemic metabolic alkalosis, and hyperreninemic hyperaldosteronism. Type III BS is caused by loss-of-function mutations in CLCNKB encoding basolateral ClC-Kb. The clinical phenotype of patients with CLCNKB mutations has been known to be highly variable, and cases that are difficult to categorize as type III BS or other hereditary tubulopathies, such as Gitelman syndrome, have been rarely reported...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/27999995/lipid-glycosylation-a-primer-for-histochemists-and-cell-biologists
#11
REVIEW
Jürgen Kopitz
Glycolipids are glycoconjugates that are predominantly found on the extracellular surface of cells ranging from bacteria to men. In bacteria and plants, glycoglycerolipids represent the main glycolipid species. Ceramides as carrier for glycans, termed glycosphingolipids (GSLs), are characteristic for vertebrates and insects. The glycan part is involved in a variety of biological activities including cell adhesion and initiation of signaling. Most of these functions rest on two basic principles: (1) GSLs spontaneously contribute to organize lipid rafts in biological membranes, thereby forming functional complexes ('glycosynapses') with receptor proteins and ion channels and (2) their glycans are bound by receptors like galectins (protein-glycan recognition) or cognate glycans (glycan-glycan recognition)...
December 20, 2016: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/27997078/hiding-in-plain-sight-a-case-of-ornithine-transcarbamylase-deficiency-unmasked-post-liver-transplantation
#12
Meera Ramanathan, Suresh Uppalapu, Nayan M Patel
Ornithine transcarbamylase deficiency represents the most common inherited defect of the urea cycle. This enzyme, predominantly found in the liver, plays a crucial role in recycling free ammonia, with deficiencies often leading to fatal complications. Here, we present the case of a 63-year-old male with alcoholic cirrhosis who underwent orthotopic liver transplantation, gradual worsening of his mental status and progressive elevation of ammonia levels. Liver allograft function was deemed normal, raising concern for a donor derived metabolic disorder of the urea cycle...
December 20, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27995076/diagnosis-of-lchad-tfp-deficiency-in-an-at-risk-newborn-using-umbilical-cord-blood-acylcarnitine-analysis
#13
Donna B Raval, Kristina P Cusmano-Ozog, Omar Ayyub, Callie Jenevein, Laura H Kofman, Brendan Lanpher, Natalie Hauser, Debra S Regier
Trifunctional protein deficiency/Long-chain hydroxyacyl-CoA dehydrogenase deficiency (LCHAD/TFP) deficiency is a disorder of fatty acid oxidation and ketogenesis. Severe neonatal lactic acidosis, cardiomyopathy, and hepatic dysfunction are caused by the accumulation of toxic long-chain acylcarnitines. The feasibility of umbilical cord blood use in screening for acylcarnitine analysis and free carnitine has been hypothesized but not reported in LCHAD/TFP neonates. We present a 4 week old female who was at risk of inheriting LCHAD/TFP deficiency and was diagnosed at the time of delivery using umbilical cord blood...
March 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/27989932/allele-level-hla-matching-impacts-key-outcomes-following-umbilical-cord-blood-transplantation-for-inherited-metabolic-disorders
#14
Kanwaldeep K Mallhi, Angela R Smith, Todd E DeFor, Troy C Lund, Paul J Orchard, Weston P Miller
Allogeneic hematopoietic stem cell transplantation has demonstrated efficacy for numerous inherited metabolic disorders (IMDs). Umbilical cord blood transplant (UCBT) is increasingly used as a graft source in IMDs, but little is known of the impact of cord blood unit (CBU)/recipient HLA allelic disparity on key outcomes following UCBT for IMD. We reviewed outcomes of 106 consecutive first, single UCBTs for IMD at the University of Minnesota with regard to CBU/recipient HLA allelic matching (HLA-A, -B, -C, and -DRB1)...
January 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27968820/mortality-outcomes-after-busulfan-containing-conditioning-treatment-and-haemopoietic-cell-transplantation-in-patients-with-gilbert-s-syndrome-a-retrospective-cohort-study
#15
George B McDonald, Ashley T Evans, Jeannine S McCune, Gary Schoch, J Donald Ostrow, Ted A Gooley
BACKGROUND: Gilbert's syndrome is a common inherited disorder of bilirubin metabolism, characterised by mild, unconjugated hyperbilirubinaemia. However, the effect of Gilbert's syndrome on the disposition of some drugs can lead to unexpected toxicity. We tested the hypothesis that patients undergoing myeloablative conditioning and haemopoietic cell transplantation would have different mortality outcomes depending on whether or not they had laboratory evidence of Gilbert's syndrome. METHODS: In this retrospective cohort study, we used clinical and laboratory data of patients who had haemopoietic cell transplantation from Jan 1, 1991, to Dec 31, 2011...
November 2016: Lancet Haematology
https://www.readbyqxmd.com/read/27937139/effects-of-aicardi-gouti%C3%A3-res-syndrome-mutations-predicted-from-adar-rna-structures
#16
Andrew J Fisher, Peter A Beal
Adenosine (A) to inosine (I) RNA editing is important for life in metazoan organisms. Dysregulation or mutations that compromise the efficacy of A to I editing results in neurological disorders and a shorten life span. These reactions are catalyzed by adenosine deaminases acting on RNA (ADARs), which hydrolytically deaminate adenosines in regions of duplex RNA. Because inosine mimics guanosine in hydrogen bonding, this prolific RNA editing alters the sequence and structural information in the RNA landscape...
December 12, 2016: RNA Biology
https://www.readbyqxmd.com/read/27935012/mutational-analysis-of-agxt-in-tunisian-population-with-primary-hyperoxaluria-type-1
#17
Saoussen M'dimegh, Asma Omezzine, Ibtihel M'barek, Amira Moussa, Sameh Mabrouk, Hayet Kaarout, Geneviéve Souche, Jalel Chemli, Sabra Aloui, Cécile Aquaviva-Bourdain, Abdellatif Achour, Saoussen Abroug, Ali Bouslama
BACKGROUND: Primary hyperoxaluria type 1 (PH1) is an autosomal recessive metabolic disorder caused by inherited mutations in the AGXT gene encoding liver peroxisomal alanine:glyoxylate aminotransferase (AGT). PH1 is a clinically and genetically heterogeneous disorder. The aim of our study was to analyze and characterize the mutational spectrum of PH1 in Tunisian patients. MATERIALS AND METHODS: Molecular studies of 146 Tunisian patients suspected with PH were performed by PCR/Restriction fragment length polymorphism (RFLP) to detect seven mutations described as the most common...
December 9, 2016: Annals of Human Genetics
https://www.readbyqxmd.com/read/27930511/four-year-follow-up-of-a-wilson-disease-pedigree-complicated-with-epilepsy-and-hypopituitarism-case-report-with-a-literature-review
#18
Qi-Jie Zhang, Liu-Qing Xu, Chong Wang, Wei Hu, Ning Wang, Wan-Jin Chen
RATIONALE: Wilson's disease (WD) is an autosomal recessive inherited disorder of copper metabolism with excellent prognosis if treated timely. However, WD is usually prone to neglect and misdiagnosis at an early stage. We reported a rare WD pedigree, and the clinical features, laboratory tests, and gene mutations were analyzed in detail. PATIENT CONCERNS: The patient was a 17-year-old and 136-cm-tall girl who presented with limb weakness, combined with multi-organ disorders including blind eye, epilepsy, and hypopituitarism...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928775/lysosomal-storage-disorders-in-nonimmune-hydrops-fetalis-nihf-an-indian-experience
#19
Jayesh Sheth, Mehul Mistri, Krati Shah, Mayank Chaudhary, Koumudi Godbole, Frenny Sheth
Lysosomal storage disorders (LSD) are rare inherited neurovisceral inborn errors of metabolism which may present as nonimmune hydrops fetalis (NIHF) during pregnancy. Although causes of NIHF are highly diverse, LSDs are one of the underlying causes of NIHF. The aim of this study was to elucidate most frequent causes of LSDs presenting as NIHF in Indian population. Several fetal tissues were investigated for enzymatic diagnosis of LSDs using modified fluorometric assays in the current prospective study carried out at our national tertiary center from 2006 through 2016...
December 8, 2016: JIMD Reports
https://www.readbyqxmd.com/read/27927250/experiences-of-caregivers-of-children-with-inherited-metabolic-diseases-a-qualitative-study
#20
Shabnaz Siddiq, Brenda J Wilson, Ian D Graham, Monica Lamoureux, Sara D Khangura, Kylie Tingley, Laure Tessier, Pranesh Chakraborty, Doug Coyle, Sarah Dyack, Jane Gillis, Cheryl Greenberg, Robin Z Hayeems, Shailly Jain-Ghai, Jonathan B Kronick, Anne-Marie Laberge, Julian Little, John J Mitchell, Chitra Prasad, Komudi Siriwardena, Rebecca Sparkes, Kathy N Speechley, Sylvia Stockler, Yannis Trakadis, Sarah Wafa, Jagdeep Walia, Kumanan Wilson, Nataliya Yuskiv, Beth K Potter
BACKGROUND: We sought to understand the experiences of parents/caregivers of children with inherited metabolic diseases (IMD) in order to inform strategies for supporting patients and their families. We investigated their experiences regarding the management of disease, its impact on child and family life, and interactions with the health care system. METHODS: From four Canadian centres, we conducted semi-structured telephone interviews with parents/caregivers of children with an IMD who were born between 2006 and 2015 and who were participating in a larger cohort study...
December 7, 2016: Orphanet Journal of Rare Diseases
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