GRHPR Gene Glyoxylate and Hydroxypyruvate Reductase
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Oxalate Loading Test: a Screening Test for Steatorrhoea
Gut: first published as 10.1136/gut.20.12.1089 on 1 December 1979. Downloaded from Gut, 1979, 20, 1089-1094 Oxalate loading test: a screening test for steatorrhoea D. S. RAMPTON', G. P. KASIDAS, G. ALAN ROSE, AND MARTIN SARNER2 From University College Hospital, London, St. Peter's Hospitals and Institute of Urology, London SUMMARY To investigate the possibility of measuring urinary oxalate output instead of faecal fat excretion as an outpatient screening test for steatorrhoea, we determined 24 hour urinary oxalate and five day faecal fat excretion before and during an oral load of sodium oxalate 600 mg daily (oxalate 4-44 mmol), in 32 patients with suspected malabsorption on a diet containing oxalate 30 mg (0-33 mmol), fat 50 g (180 mmol), and calcium 1 g (25 mmol). Nineteen patients proved to have steatorrhoea (mean faecal fat 62 mmol/24 h, range 19-186 mmol) of varying aetiologies. On the diet alone, urinary oxalate was raised in only nine of these patients (mean 0 25 mmol/24 h, range 0-08-059 mmol) (normal <0 20). By contrast, when the diet was supplemented with oral sodium oxalate, all 19 patients with steatorrhoea had hyperoxaluria (mean 0-91 mmol/24 h, range 046- 1P44 mmol) (normal <0-44). There was a significant positive linear relationship between urinary oxalate and faecal fat when the 32 patients were on the high oxalate intake (r=0*73, P <0.001), but not when they were on the low oxalate intake. Mean percentage absorption of orally administered oxalate was 58+09% (±1 SD) in normal subjects and 14-7+6-0% (P <0.002) in patients with steatorrhoea. -
DISSERTATION PROTEOMIC PROFILING of the RAT RENAL PROXIMAL CONVOLUTED TUBULE in RESPONSE to CHRONIC METABOLIC ACIDOSIS Submitted
DISSERTATION PROTEOMIC PROFILING OF THE RAT RENAL PROXIMAL CONVOLUTED TUBULE IN RESPONSE TO CHRONIC METABOLIC ACIDOSIS Submitted by Dana Marie Freund Department of Biochemistry and Molecular Biology In partial fulfillment of the requirements For the Degree of Doctor of Philosophy Colorado State University Fort Collins, Colorado Spring 2013 Doctoral Committee: Advisor: Norman Curthoys Co-Advisor: Jessica Prenni Jennifer Nyborg Olve Peersen Karen Dobos ABSTRACT PROTEOMIC PROFILING OF THE RAT RENAL PROXIMAL CONVOLUTED TUBULE IN RESPONSE TO CHRONIC METABOLIC ACIDOSIS The human kidneys contain more than one million glomeruli which filter nearly 200 liters of plasma per day. The proximal tubule is the segment of the nephron that immediately follows the glomeruli. This portion of the nephron contributes to fluid, electrolyte and nutrient homeostasis by reabsorbing 60-70% of the filtered water and NaCl and an even greater proportion of NaHCO3. The initial or convoluted portion of the proximal tubule reabsorbs nearly all of the nutrients in the glomerular filtrate and is the site of active secretion and many of the metabolic functions of the kidney. For example, the proximal convoluted tubule is the primary site of renal ammoniagenesis and gluconeogenesis, processes that are significantly activated during metabolic acidosis. Metabolic acidosis is a common clinical condition that is characterized by a decrease in blood pH and bicarbonate concentration. Metabolic acidosis also occurs frequently as a secondary complication, which adversely affects the outcome of patients with various life- threatening conditions. This type of acidosis can occur acutely, lasting for a few hours to a day, or as a chronic condition where acid-base balance is not fully restored. -
Reactome | Metabolism of Amino Acids and Derivatives (R-HSA-71291)
Metabolism of amino acids and derivatives D'Eustachio, P., Gopinathrao, G., Ito, S., Jassal, B., Jupe, S., Rush, MG., Stephan, R., Williams, MG., d'Ischia, M. European Bioinformatics Institute, New York University Langone Medical Center, Ontario Institute for Cancer Research, Oregon Health and Science University. The contents of this document may be freely copied and distributed in any media, provided the authors, plus the institutions, are credited, as stated under the terms of Creative Commons Attribution 4.0 Inter- national (CC BY 4.0) License. For more information see our license. 06/08/2021 Introduction Reactome is open-source, open access, manually curated and peer-reviewed pathway database. Pathway annotations are authored by expert biologists, in collaboration with Reactome editorial staff and cross- referenced to many bioinformatics databases. A system of evidence tracking ensures that all assertions are backed up by the primary literature. Reactome is used by clinicians, geneticists, genomics research- ers, and molecular biologists to interpret the results of high-throughput experimental studies, by bioin- formaticians seeking to develop novel algorithms for mining knowledge from genomic studies, and by systems biologists building predictive models of normal and disease variant pathways. The development of Reactome is supported by grants from the US National Institutes of Health (P41 HG003751), University of Toronto (CFREF Medicine by Design), European Union (EU STRP, EMI-CD), and the European Molecular Biology Laboratory (EBI Industry program). Literature references Fabregat, A., Sidiropoulos, K., Viteri, G., Forner, O., Marin-Garcia, P., Arnau, V. et al. (2017). Reactome pathway ana- lysis: a high-performance in-memory approach. BMC bioinformatics, 18, 142. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
PROTEOMIC ANALYSIS of HUMAN URINARY EXOSOMES. Patricia
ABSTRACT Title of Document: PROTEOMIC ANALYSIS OF HUMAN URINARY EXOSOMES. Patricia Amalia Gonzales Mancilla, Ph.D., 2009 Directed By: Associate Professor Nam Sun Wang, Department of Chemical and Biomolecular Engineering Exosomes originate as the internal vesicles of multivesicular bodies (MVBs) in cells. These small vesicles (40-100 nm) have been shown to be secreted by most cell types throughout the body. In the kidney, urinary exosomes are released to the urine by fusion of the outer membrane of the MVBs with the apical plasma membrane of renal tubular epithelia. Exosomes contain apical membrane and cytosolic proteins and can be isolated using differential centrifugation. The analysis of urinary exosomes provides a non- invasive means of acquiring information about the physiological or pathophysiological state of renal cells. The overall objective of this research was to develop methods and knowledge infrastructure for urinary proteomics. We proposed to conduct a proteomic analysis of human urinary exosomes. The first objective was to profile the proteome of human urinary exosomes using liquid chromatography-tandem spectrometry (LC- MS/MS) and specialized software for identification of peptide sequences from fragmentation spectra. We unambiguously identified 1132 proteins. In addition, the phosphoproteome of human urinary exosomes was profiled using the neutral loss scanning acquisition mode of LC-MS/MS. The phosphoproteomic profiling identified 19 phosphorylation sites corresponding to 14 phosphoproteins. The second objective was to analyze urinary exosomes samples isolated from patients with genetic mutations. Polyclonal antibodies were generated to recognize epitopes on the gene products of these genetic mutations, NKCC2 and MRP4. The potential usefulness of urinary exosome analysis was demonstrated using the well-defined renal tubulopathy, Bartter syndrome type I and using the single nucleotide polymorphism in the ABCC4 gene. -
Glycine and Serine Inhibition of D-Glycerate Dehydrogenase and 3-Phosphoglycerate Dehydrogenase of Rat Brain
Volume 17, number 1 FEBS LETTERS September 1971 GLYCINE AND SERINE INHIBITION OF D-GLYCERATE DEHYDROGENASE AND 3-PHOSPHOGLYCERATE DEHYDROGENASE OF RAT BRAIN M.L. UHR and M.K. SNEDDON Department of Physiology, Australian National University, Canberra, A.C. T. 2601, Australia Received 16 July 1971 1. Introduction 2. Materials and methods Glycine is probably a major inhibitory transmitter Barium phosphoglycerate and calcium DL-glycer- in the mammalian central nervous system [ 1,2] . ate purchased from Sigma Chemical Corporation, were Hence the metabolism and metabolic control of converted to sodium salts by passage through a glycine could be important for the efficient function- column of Dowex-SO(H?) and neutralization of the ing of nervous tissue, particularly of the spinal cord. emerging acids. Phosphoglycerate concentration was As glycine may be formed from serine by serine estimated by the method of Czok and Eckert [7]. hydroxymethylase (EC 2.1.2.1) [3] , enzymes neces- Glycerate was estimated by the method of Bartlett sary for the formation of serine from carbohydrate [8] with the concentration of chromotrophic acid sources could be important for the production and raised to 0.025% as recommended by Dawkins and regulation of glycine. Two major pathways of serine Dickens [9] . NAD was purchased from P-L Biochemi- formation have been described in mammalian sys- cals, and NADP from Sigma. tems, the “phosphoryl:ted” pathway from 3-phos- Rat cortical tissue was homogenized in 0.32 M phoglycerate [4], and the “non-phosphorylated” sucrose containing 0.5 mM dithiothreitol (DTT) and pathway from D-glycerate [5,6]. We decided there- centrifuged at 105,000 g for 100 min. -
Blueprint Genetics Primary Hyperoxaluria Panel
Primary Hyperoxaluria Panel Test code: KI0801 Is a 3 gene panel that includes assessment of non-coding variants. Is ideal for patients with a clinical suspicion of hyperoxaluria. About Primary Hyperoxaluria The primary hyperoxalurias are rare disorders of glyoxylate metabolism, which result in markedly increased endogenous oxalate synthesis by the liver. They are characterized by an excess of oxalate resulting in manifestations ranging from occasional renal stones, recurrent nephrolithiasis and nephrocalcinosis to end-stage renal disease (ESRD) and systemic oxalosis. Presenting ranges from the neonatal period to adulthood. Among disorders causing hyperoxaluria, the primary hyperoxalurias are the most severe, ultimately leading to ESRD and if untreated, death in most patients. Type I primary hyperoxaluria (PH1), is caused by deficient or absent activity of liver-specific peroxisomal alanine glyoxylate aminotransferase (AGT). In some patients with PH1 type disease, the enzyme is present but mistargeted to mitochondria where it is metabolically inactive. The severe infantile form is characterized by a failure to thrive, nephrocalcinosis with or without nephrolithiasis and early ESRD. Onset in childhood and adolescence is often characterized by recurrent urolithiasis (with or without nephrocalcinosis) and progressive renal failure. The late onset form is characterized by occasional renal stones with onset in adulthood, but acute renal failure caused by bilateral obstruction of the kidneys by oxalate stones may occur. Other manifestations include urinary tract infections, dysuria and hematuria. The ongoing systemic oxalosis also may lead to other clinical manifestations such as cardiac conduction defects, vascular calcification with distal gangrene, disturbed vision, specific brown colored retinal deposits, skin nodules, joint involvement and bone disease leading to fractures in long-term dialysis-dependent patients. -
Grhpr Gene, Full Gene Analysis
TEST ID: GRHPZ GRHPR GENE, FULL GENE ANALYSIS CLINICAL INFORMATION MOBILE APPS FROM MAYO MEDICAL LABORATORIES Primary hyperoxaluria type 2 (PH2) is a hereditary disorder of glyoxylate metabolism caused by deficiency of the hepatic enzyme glyoxylate reductase/hydroxypyruvate reductase (GRHPR). Lab Catalog for iPad and Absence of GRHPR activity results in excess oxalate and usually L-glycerate excreted in the Lab Reference for iPhone urine leading to nephrolithiasis (kidney stones) and sometimes renal failure. and iPod Touch Onset of PH2 is typically in childhood or adolescence with symptoms related to kidney stones. In some cases, kidney failure may be the initial presenting feature. Nephrocalcinosis, as seen by renal ultrasound, is observed less frequently in individuals with PH2 than primary Requires iOS 5.1+ hyperoxaluria type 1 (PH1). End-stage renal disease (ESRD) is also less common and of later onset than PH1; however, once ESRD develops, oxalate deposition in other organs such as REFERENCE VALUES bone, retina, and myocardium can occur. An interpretive report will be While the exact prevalence and incidence of PH2 are not known, it is thought that PH2 is less provided. common than PH1, which has an estimated prevalence rate of 1 to 3 per million population and an incidence of 0.1 per million/year. ANALYTIC TIME Biochemical testing is indicated in patients with possible primary hyperoxaluria. Measurement 14 days of urinary oxalate in a timed, 24-hour urine collection is strongly preferred, with correction to adult body surface area in pediatric patients (HYOX / Hyperoxaluria Panel, Urine; OXU / Oxalate, Urine). In very young children (incapable of performing a timed collection), random urine oxalate to creatinine ratios may be used for determination of oxalate excretion. -
Redalyc.The Nutritional Limitations of Plant-Based Beverages in Infancy
Nutrición Hospitalaria ISSN: 0212-1611 [email protected] Sociedad Española de Nutrición Parenteral y Enteral España Vitoria, Isidro The nutritional limitations of plant-based beverages in infancy and childhood Nutrición Hospitalaria, vol. 34, núm. 5, 2017, pp. 1205-1214 Sociedad Española de Nutrición Parenteral y Enteral Madrid, España Available in: http://www.redalyc.org/articulo.oa?id=309253341026 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Nutr Hosp. 2017; 34(5):1205-1214 ISSN 0212-1611 - CODEN NUHOEQ S.V.R. 318 Nutrición Hospitalaria Revisión The nutritional limitations of plant-based beverages in infancy and childhood Limitaciones nutricionales de las bebidas vegetales en la lactancia y la infancia Isidro Vitoria Unit of Nutrition and Metabolopathies. Hospital Universitario y Politécnico La Fe. Valencia, Spain Abstract Breastfeeding, infant formula and cow’s milk are basic foods in infant nutrition. However, they are being increasingly replaced either totally or partially by plant-based beverages. The composition of 164 plant-based beverages available in Spain was reviewed based on the nutritional labeling of the package and the man- ufacturers’ webpages. This was compared to the composition of cow’s milk and infant formula. In addition, the nutritional disease associated with consumption of plant-based beverages in infants and children was reviewed by means of a literature search in Medline and Embase since 1990 based on the key words “plant-based beverages” or “rice beverages” or “almond beverages” or “soy beverages” and “infant” or “child”. -
Fructose As an Endogenous Toxin
HEPATOCYTE MOLECULAR CYTOTOXIC MECHANISM STUDY OF FRUCTOSE AND ITS METABOLITES INVOLVED IN NONALCOHOLIC STEATOHEPATITIS AND HYPEROXALURIA By Yan (Cynthia) Feng A thesis submitted in the conformity with the requirements for the degree of Master of Science Graduate Department of Pharmaceutical Sciences University of Toronto © Copyright by Yan (Cynthia) Feng 2010 ABSTRACT HEPATOCYTE MOLECULAR CYTOTOXIC MECHANISM STUDY OF FRUCTOSE AND ITS METABOLITES INVOLVED IN NONALCOHOLIC STEATOHEPATITIS AND HYPEROXALURIA Yan (Cynthia) Feng Master of Science, 2010 Department of Pharmaceutical Sciences University of Toronto High chronic fructose consumption is linked to a nonalcoholic steatohepatitis (NASH) type of hepatotoxicity. Oxalate is the major endpoint of fructose metabolism, which accumulates in the kidney causing renal stone disease. Both diseases are life-threatening if not treated. Our objective was to study the molecular cytotoxicity mechanisms of fructose and some of its metabolites in the liver. Fructose metabolites were incubated with primary rat hepatocytes, but cytotoxicity only occurred if the hepatocytes were exposed to non-toxic amounts of hydrogen peroxide such as those released by activated immune cells. Glyoxal was most likely the endogenous toxin responsible for fructose induced toxicity formed via autoxidation of the fructose metabolite glycolaldehyde catalyzed by superoxide radicals, or oxidation by Fenton’s hydroxyl radicals. As for hyperoxaluria, glyoxylate was more cytotoxic than oxalate presumably because of the formation of condensation product oxalomalate causing mitochondrial toxicity and oxidative stress. Oxalate toxicity likely involved pro-oxidant iron complex formation. ii ACKNOWLEDGEMENTS I would like to dedicate this thesis to my family. To my parents, thank you for the sacrifices you have made for me, thank you for always being there, loving me and supporting me throughout my life. -
Supplementary Materials
Supplementary Materials COMPARATIVE ANALYSIS OF THE TRANSCRIPTOME, PROTEOME AND miRNA PROFILE OF KUPFFER CELLS AND MONOCYTES Andrey Elchaninov1,3*, Anastasiya Lokhonina1,3, Maria Nikitina2, Polina Vishnyakova1,3, Andrey Makarov1, Irina Arutyunyan1, Anastasiya Poltavets1, Evgeniya Kananykhina2, Sergey Kovalchuk4, Evgeny Karpulevich5,6, Galina Bolshakova2, Gennady Sukhikh1, Timur Fatkhudinov2,3 1 Laboratory of Regenerative Medicine, National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of Russian Federation, Moscow, Russia 2 Laboratory of Growth and Development, Scientific Research Institute of Human Morphology, Moscow, Russia 3 Histology Department, Medical Institute, Peoples' Friendship University of Russia, Moscow, Russia 4 Laboratory of Bioinformatic methods for Combinatorial Chemistry and Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia 5 Information Systems Department, Ivannikov Institute for System Programming of the Russian Academy of Sciences, Moscow, Russia 6 Genome Engineering Laboratory, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia Figure S1. Flow cytometry analysis of unsorted blood sample. Representative forward, side scattering and histogram are shown. The proportions of negative cells were determined in relation to the isotype controls. The percentages of positive cells are indicated. The blue curve corresponds to the isotype control. Figure S2. Flow cytometry analysis of unsorted liver stromal cells. Representative forward, side scattering and histogram are shown. The proportions of negative cells were determined in relation to the isotype controls. The percentages of positive cells are indicated. The blue curve corresponds to the isotype control. Figure S3. MiRNAs expression analysis in monocytes and Kupffer cells. Full-length of heatmaps are presented. -
Peroxisomal Alanine:Glyoxylate Aminotransferase Deficiency in Primary Hyperoxaluria Type I
Volume 201, number 1 FEBS 3672 May 1986 Peroxisomal alanine:glyoxylate aminotransferase deficiency in primary hyperoxaluria type I C.J. Danpure and P.R Jennings Divisum of Inherited Metabolic Diseases, Clinical Research Centre, Watford Road, Harrow HA1 3UJ, England Received 1 April 1986 Activities of alanine:glyoxylate aminotransferase in the livers of two patients with primary hyperoxaluria type I were substantially lower than those found in five control human livers. Detailed subcellular fractiona- tion of one of the hyperoxaluric livers, compared with a control liver, showed that there was a complete absence of peroxisomal alanine:glyoxylate aminotransferase. This enzyme deficiency explains most of the biochemical characteristics of the disease and means that primary hyperoxaluria type I should be added to the rather select list of peroxisomal disorders. Hyperoxaluria Alanine:glyoxylate aminotransferase Glutamate:glyoxylate aminotransferase Peroxisomal disorder Glyoxylate metabolism (Human) Liver pathology 1. INTRODUCTION transamination in primary hyperoxaluria type I. Our results suggest that the basic biochemical Primary hyperoxaluria type I is a rare inborn er- defect in the disease is the absence of peroxisomal ror of metabolism caused by an accumulation of alanine : glyoxylate aminotransferase. glyoxylate, which leads to increased synthesis and excretion of oxalate and glycolate. Clinically the disease is characterized by recurrent calcium ox- 2. EXPERIMENTAL alate kidney stones, resulting in progressive renal insufficiency and death usually before the age of 2.1. Livers 20 [l]. Numerous in vivo studies in the 1960s sug- The subcellular fractionation experiments were gested that there might be an abnormality in the carried out on the liver of a patient with transamination of glyoxylate to glycine [2-41 in pyridoxine-resistant primary hyperoxaluria type I the type I disease, but the observations made in and a normal human liver.