From Ptolemaus to Copernicus: the Evolving System of Gluten-Related Disorder
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Celiac Disease Resource Guide for a Gluten-Free Diet a Family Resource from the Celiac Disease Program
Celiac Disease Resource Guide for a Gluten-Free Diet A family resource from the Celiac Disease Program celiacdisease.stanfordchildrens.org What Is a Gluten-Free How Do I Diet? Get Started? A gluten-free diet is a diet that completely Your first instinct may be to stop at the excludes the protein gluten. Gluten is grocery store on your way home from made up of gliadin and glutelin which is the doctor’s office and search for all the found in grains including wheat, barley, gluten-free products you can find. While and rye. Gluten is found in any food or this initial fear may feel a bit overwhelming product made from these grains. These but the good news is you most likely gluten-containing grains are also frequently already have some gluten-free foods in used as fillers and flavoring agents and your pantry. are added to many processed foods, so it is critical to read the ingredient list on all food labels. Manufacturers often Use this guide to select appropriate meals change the ingredients in processed and snacks. Prepare your own gluten-free foods, so be sure to check the ingredient foods and stock your pantry. Many of your list every time you purchase a product. favorite brands may already be gluten-free. The FDA announced on August 2, 2013, that if a product bears the label “gluten-free,” the food must contain less than 20 ppm gluten, as well as meet other criteria. *The rule also applies to products labeled “no gluten,” “free of gluten,” and “without gluten.” The labeling of food products as “gluten- free” is a voluntary action for manufacturers. -
White Paper : the Current State of Scientific Knowledge About Gluten
White Paper : The Current State of Scientific Knowledge about Gluten April 27, 2018 Table of Contents Introduction .......................................................................................................................................... 2 1. Gluten—A Complex Group of Cereal Proteins ............................................................................. 4 1.1 Definition .................................................................................................................................... 4 1.2 Protein Classification in Gluten-containing Cereals .................................................................. 4 1.3 Gluten-containing Cereals in the Food Industry ........................................................................ 6 1.4 Gluten-free Replacements .......................................................................................................... 6 1.5 Effects of Processing on Gluten Proteins ................................................................................... 6 2. Gluten-related Disorders .............................................................................................................. 8 2.1 Celiac Disease .............................................................................................................................. 8 2.2 Dermatitis Herpetiformis............................................................................................................ 9 2.3 Gluten Ataxia ............................................................................................................................. -
Celiac Disease – National Concerns
84 Celiac disease – national concerns CELIAC DISEASE - NATIONAL CONCERNS R. Siminiuc Technical University of Moldova INTRODUCTION in the Mother and Child Health prevalence of celiac disease is 1:670, and the number of diagnosed Coeliac disease is a pathology caused by persons is just a part of the top of iceberg. Presently, permanent intolerance to gluten, a lipoprotein the only treatment for celiac disease is life-long substance composed of two types of protein glutelin adherence to a strict gluten-free diet: Untreated and prolamin. Gluten is contained in essential celiac disease puts patients at risk for serious quantities in: wheat, barley, rye and other cereals, complications. that’s why is present in many common alimentary foods such as bread, biscuits, pasta and more. Normally, the nutrients in food are absorbed 2. CONCERNS VIS-A VIS OF into the bloodstream through the cells on the villi. COELIAC DISEASE When the villi become atrophied, there is less surface area for nutrient absorption, and a condition Developing functional foods which, in known as malabsorption results. Consequences of addition to nutrients has good specific actions malabsorption include vitamin and mineral to human body is one of priority directions of deficiencies, osteoporosis and other problems [1]. development in science and food technology. Preventive and therapeutic role of food is 1. PREVALENCE OF COELIAC currently of great importance in the developed DISEASE world with high research potential. In European countries are based and work celiac associations and specialized centers, where Currently there an increasing incidence of patients and interested persons may receive celiac disease , which reaches an average 1% of the information for symptomatic, prevention, treatment population, being highest in the following countries: of this disease, which actually consists of a gluten Irland-1:122, USA-1:133, Sarawi (located in West free diet. -
Celiac Disease and Nonceliac Gluten Sensitivitya Review
Clinical Review & Education JAMA | Review Celiac Disease and Nonceliac Gluten Sensitivity A Review Maureen M. Leonard, MD, MMSc; Anna Sapone, MD, PhD; Carlo Catassi, MD, MPH; Alessio Fasano, MD CME Quiz at IMPORTANCE The prevalence of gluten-related disorders is rising, and increasing numbers of jamanetwork.com/learning individuals are empirically trying a gluten-free diet for a variety of signs and symptoms. This review aims to present current evidence regarding screening, diagnosis, and treatment for celiac disease and nonceliac gluten sensitivity. OBSERVATIONS Celiac disease is a gluten-induced immune-mediated enteropathy characterized by a specific genetic genotype (HLA-DQ2 and HLA-DQ8 genes) and autoantibodies (antitissue transglutaminase and antiendomysial). Although the inflammatory process specifically targets the intestinal mucosa, patients may present with gastrointestinal signs or symptoms, extraintestinal signs or symptoms, or both, Author Affiliations: Center for Celiac suggesting that celiac disease is a systemic disease. Nonceliac gluten sensitivity Research and Treatment, Division of is diagnosed in individuals who do not have celiac disease or wheat allergy but who Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for have intestinal symptoms, extraintestinal symptoms, or both, related to ingestion Children, Boston, Massachusetts of gluten-containing grains, with symptomatic improvement on their withdrawal. The (Leonard, Sapone, Catassi, Fasano); clinical variability and the lack of validated biomarkers for nonceliac gluten sensitivity make Celiac Research Program, Harvard establishing the prevalence, reaching a diagnosis, and further study of this condition Medical School, Boston, Massachusetts (Leonard, Sapone, difficult. Nevertheless, it is possible to differentiate specific gluten-related disorders from Catassi, Fasano); Shire, Lexington, other conditions, based on currently available investigations and algorithms. -
Antioxidant Peptides and Biodegradable Films Derived from Barley Proteins
University of Alberta Antioxidant Peptides and Biodegradable Films Derived from Barley Proteins by Yichen Xia A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Food Science and Technology Department of Agricultural, Food and Nutritional Science ©Yichen Xia Spring 2012 Edmonton, Alberta Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission Abstract Barley protein derived antioxidant peptides and biodegradable /edible films have been successfully prepared. Alcalase hydrolyzed barley glutelin demonstrated significantly higher antioxidant capacity than those treated by flavourzyme in · 2+ radical scavenging capacity (O2 ¯/OH˙), Fe -chelating effect and reducing power assays. The alcalase hydrolysates (AH) was separated using ultra-filtration and reversed-phase chromatography, and assessment of the fractions indicated that the molecular size, hydrophobicity and amino acid composition of AH all contributed to their activity. Final peptides sequences were identified using LC-MS/MS. Hydrolyzed barley glutelin is a potential source of antioxidant peptides for food and nutraceutical applications. -
A Metagenomic Β-Glucuronidase Uncovers a Core Adaptive Function of the Human Intestinal Microbiome
A metagenomic β-glucuronidase uncovers a core adaptive function of the human intestinal microbiome Karine Gloux, Olivier Berteau, Hanane El oumami, Fabienne Béguet, Marion Leclerc, and Joël Doré1 Institut National de la Recherche Agronomique, Unité Mixte de Recherche 1319 Micalis, F-78352 Jouy en Josas, France Edited by Todd R. Klaenhammer, North Carolina State University, Raleigh, NC, and approved June 1, 2010 (received for review February 4, 2010) In the human gastrointestinal tract, bacterial β-D-glucuronidases (BG; XIVa), major reservoirs of BG-positive bacteria (11), are dys- E.C. 3.2.1.31) are involved both in xenobiotic metabolism and in some biosis markers in Crohn’s disease (12–15) and in intestinal carci- of the beneficial effects of dietary compounds. Despite their biolog- nogenesis (16). Nevertheless, the relative contribution of bacterial ical significance, investigations are hampered by the fact that only strains to the global intestinal BG activity remains unclear, and a few BGs have so far been studied. A functional metagenomic the molecular bases are essentially unknown. approach was therefore performed on intestinal metagenomic In the human digestive tract, bacterial BGs are known to be libraries using chromogenic glucuronides as probes. Using this strat- distributed among the Enterobacteriaceae family in some Firmi- egy, 19 positive metagenomic clones were identified but only one cutes genera (Lactobacillus, Streptococcus, Clostridium, Rumino- exhibited strong β-D-glucuronidase activity when subcloned into an coccus, Roseburia, and Faecalibacterium) and in a specific species expression vector. The cloned gene encoded a β-D-glucuronidase of Actinobacteria (Bifidobacterium dentium) (11, 17, 18). On (called H11G11-BG) that had distant amino acid sequence homolo- the basis of their sequence, BGs are highly homologous to gies and an additional C terminus domain compared with known β-galactosidases and only a few of them have been investigated β fi -D-glucuronidases. -
Celiac Disease and Nonceliac Gluten Sensitivity a Review
Clinical Review & Education JAMA | Review Celiac Disease and Nonceliac Gluten Sensitivity A Review Maureen M. Leonard, MD, MMSc; Anna Sapone, MD, PhD; Carlo Catassi, MD, MPH; Alessio Fasano, MD CME Quiz at IMPORTANCE The prevalence of gluten-related disorders is rising, and increasing numbers of jamanetwork.com/learning individuals are empirically trying a gluten-free diet for a variety of signs and symptoms. This review aims to present current evidence regarding screening, diagnosis, and treatment for celiac disease and nonceliac gluten sensitivity. OBSERVATIONS Celiac disease is a gluten-induced immune-mediated enteropathy characterized by a specific genetic genotype (HLA-DQ2 and HLA-DQ8 genes) and autoantibodies (antitissue transglutaminase and antiendomysial). Although the inflammatory process specifically targets the intestinal mucosa, patients may present with gastrointestinal signs or symptoms, extraintestinal signs or symptoms, or both, Author Affiliations: Center for Celiac suggesting that celiac disease is a systemic disease. Nonceliac gluten sensitivity Research and Treatment, Division of is diagnosed in individuals who do not have celiac disease or wheat allergy but who Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for have intestinal symptoms, extraintestinal symptoms, or both, related to ingestion Children, Boston, Massachusetts of gluten-containing grains, with symptomatic improvement on their withdrawal. The (Leonard, Sapone, Catassi, Fasano); clinical variability and the lack of validated biomarkers for nonceliac gluten sensitivity make Celiac Research Program, Harvard establishing the prevalence, reaching a diagnosis, and further study of this condition Medical School, Boston, Massachusetts (Leonard, Sapone, difficult. Nevertheless, it is possible to differentiate specific gluten-related disorders from Catassi, Fasano); Shire, Lexington, other conditions, based on currently available investigations and algorithms. -
Gut Dysbiosis and Neurobehavioral Alterations in Rats Exposed to Silver Nanoparticles Received: 10 January 2017 Angela B
www.nature.com/scientificreports OPEN Gut Dysbiosis and Neurobehavioral Alterations in Rats Exposed to Silver Nanoparticles Received: 10 January 2017 Angela B. Javurek1, Dhananjay Suresh 2, William G. Spollen3,4, Marcia L. Hart5, Sarah Accepted: 19 April 2017 A. Hansen6, Mark R. Ellersieck7, Nathan J. Bivens 8, Scott A. Givan 3,4,9, Anandhi Published: xx xx xxxx Upendran10,11, Raghuraman Kannan11,12 & Cheryl S. Rosenfeld 4,13,14,15 Due to their antimicrobial properties, silver nanoparticles (AgNPs) are being used in non-edible and edible consumer products. It is not clear though if exposure to these chemicals can exert toxic effects on the host and gut microbiome. Conflicting studies have been reported on whether AgNPs result in gut dysbiosis and other changes within the host. We sought to examine whether exposure of Sprague- Dawley male rats for two weeks to different shapes of AgNPs, cube (AgNC) and sphere (AgNS) affects gut microbiota, select behaviors, and induces histopathological changes in the gastrointestinal system and brain. In the elevated plus maze (EPM), AgNS-exposed rats showed greater number of entries into closed arms and center compared to controls and those exposed to AgNC. AgNS and AgNC treated groups had select reductions in gut microbiota relative to controls. Clostridium spp., Bacteroides uniformis, Christensenellaceae, and Coprococcus eutactus were decreased in AgNC exposed group, whereas, Oscillospira spp., Dehalobacterium spp., Peptococcaeceae, Corynebacterium spp., Aggregatibacter pneumotropica were reduced in AgNS exposed group. Bacterial reductions correlated with select behavioral changes measured in the EPM. No significant histopathological changes were evident in the gastrointestinal system or brain. Findings suggest short-term exposure to AgNS or AgNC can lead to behavioral and gut microbiome changes. -
Germinants and Their Receptors in Clostridia
JB Accepted Manuscript Posted Online 18 July 2016 J. Bacteriol. doi:10.1128/JB.00405-16 Copyright © 2016, American Society for Microbiology. All Rights Reserved. 1 Germinants and their receptors in clostridia 2 Disha Bhattacharjee*, Kathleen N. McAllister* and Joseph A. Sorg1 3 4 Downloaded from 5 Department of Biology, Texas A&M University, College Station, TX 77843 6 7 Running Title: Germination in Clostridia http://jb.asm.org/ 8 9 *These authors contributed equally to this work 10 1Corresponding Author on September 12, 2018 by guest 11 ph: 979-845-6299 12 email: [email protected] 13 14 Abstract 15 Many anaerobic, spore-forming clostridial species are pathogenic and some are industrially 16 useful. Though many are strict anaerobes, the bacteria persist in aerobic and growth-limiting 17 conditions as multilayered, metabolically dormant spores. For many pathogens, the spore-form is Downloaded from 18 what most commonly transmits the organism between hosts. After the spores are introduced into 19 the host, certain proteins (germinant receptors) recognize specific signals (germinants), inducing 20 spores to germinate and subsequently outgrow into metabolically active cells. Upon germination 21 of the spore into the metabolically-active vegetative form, the resulting bacteria can colonize the 22 host and cause disease due to the secretion of toxins from the cell. Spores are resistant to many http://jb.asm.org/ 23 environmental stressors, which make them challenging to remove from clinical environments. 24 Identifying the conditions and the mechanisms of germination in toxin-producing species could 25 help develop affordable remedies for some infections by inhibiting germination of the spore on September 12, 2018 by guest 26 form. -
Antibitoic Treatment for Tuberculosis Induces a Profound Dysbiosis of the Gut Microbiome That Persists Long After Therapy Is Completed
ANTIBITOIC TREATMENT FOR TUBERCULOSIS INDUCES A PROFOUND DYSBIOSIS OF THE GUT MICROBIOME THAT PERSISTS LONG AFTER THERAPY IS COMPLETED A Thesis Presented to the Faculty of the Weill Cornell Graduate School of Medical Sciences in Partial Fulfillment of the Requirements for the Degree of Masters of Science by Matthew F. Wipperman May 2017 © 2017 Matthew F. Wipperman ABSTRACT Mycobacterium tuberculosis, the cause of Tuberculosis (TB), infects one third of the world’s population and causes substantial mortality worldwide. In its shortest format, treatment of drug sensitive TB requires six months of multidrug therapy with a mixture of broad spectrum and mycobacterial specific antibiotics, and treatment of multidrug resistant TB is much longer. The widespread use of this regimen worldwide makes this one the largest exposures of humans to antimicrobials, yet the effects of antimycobacterial agents on intestinal microbiome composition and long term stability are unknown. We compared the microbiome composition, assessed by both 16S rDNA and metagenomic DNA sequencing, of Haitian TB cases during antimycobacterial treatment and following cure by 6 months of TB therapy. TB treatment does not perturb overall diversity, but nonetheless dramatically depletes multiple immunologically significant commensal bacteria. The perturbation by TB therapy lasts at least 1.5 years after completion of treatment, indicating that the effects of TB treatment are long lasting and perhaps permanent. These results demonstrate that TB treatment has dramatic and durable effects on the intestinal microbiome and highlight unexpected extreme consequences of treatment for the world’s most common infection on human ecology. BIOGRAPHICAL SKETCH NAME POSITION TITLE Wipperman, Matthew Frederick Postdoctoral Researcher at eRA COMMONS USER NAME Memorial Sloan Kettering Cancer Center MFWIPPERMAN DEGREE INSTITUTION AND (if MM/YY FIELD OF STUDY LOCATION applicable) Franklin & Marshall College B.A. -
New Genus, Coprococcus, Twelve New Species, and Emended Descriptions of Four Previously Described Species of Bacteria from Human Feces LILLIAN V
INTERNATIONAL JOURNAL of SYSTEMATIC BACTERIOLOGY Vol. 24, No. 2 April 1974, p. 260-277 Printed in U.S.A. Copyright 0 1974 International Association of Microbiological Societies New Genus, Coprococcus, Twelve New Species, and Emended Descriptions of Four Previously Described Species of Bacteria from Human Feces LILLIAN V. HOLDEMAN and W. E. C. MOORE Anaerobe Laboratory, Virginia Polytechnic Institute and State University, Blacksburg, Virginia24061 A new genus of anaerobic cocci, Coprococcus, and 12 new species of anaerobes, Coprococcus eutactus, C. catus, C. comes, RuminococCus callidus, R. torques, Streptococcus hansenii, Bacteroides eggerthii, Eubacterium eligens, E. formicigenerans, E. hallii, Lactobacillus rogosae, and Clostridium nexile, are described. Emended descriptions and proposed neotype strains for Strepto- coccus constellatus (Prkvot) comb. nov., S. morbillorum (Prkvot) comb. nov., S. in termedius PrCvot, and Eubacterium biiorme (Eggerth) PrCvot are presented. During quantitative and qualitative studies of The moles percent guanine plus cytosine (G+C) the human fecal flora, a large number of content of the deoxyribonucleic acid (DNA) prepara- previously undescribed bacterial species was tions was determined by the thermal melting point encountered as predominant members of the (T,) method (7) by using an automatic recording flora. Of these species, those for which we have spectrophotometer (Gilford Instrument Laboratories). DNA from Escherichia coli B was included in each set nine or more isolates from six or more persons of analyses as a standard. are described here. In addition, the taxonomic position of some species of cocci is discussed, RESULTS AND DISCUSSION and for Eubacterium biforme (Eggerth) Prbvot, an emended description is presented and a Anaerobic Cocci neotype strain is designated. -
Functional Deficits in Gut Microbiome of Young and Middle-Aged
nutrients Article Functional Deficits in Gut Microbiome of Young and Middle-Aged Adults with Prediabetes Apparent in Metabolizing Bioactive (Poly)phenols Xuhuiqun Zhang , Anqi Zhao, Amandeep K. Sandhu, Indika Edirisinghe and Britt M. Burton-Freeman * Department of Food Science and Nutrition and Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, IL 60616, USA; [email protected] (X.Z.); [email protected] (A.Z.); [email protected] (A.K.S.); [email protected] (I.E.) * Correspondence: [email protected]; Tel.: +1-708-341-7078 Received: 20 October 2020; Accepted: 20 November 2020; Published: 23 November 2020 Abstract: Background: Gut microbiota metabolize select dietary (poly)phenols to absorbable metabolites that exert biological effects important in metabolic health. Microbiota composition associated with health/disease status may affect its functional capacity to yield bioactive metabolites from dietary sources. Therefore, this study assessed gut microbiome composition and its related functional capacity to metabolize fruit (poly)phenols in individuals with prediabetes and insulin resistance (PreDM-IR, n = 26) compared to a metabolically healthy Reference group (n = 10). Methods: Shotgun sequencing was used to characterize gut microbiome composition. Targeted quantitative metabolomic analyses of plasma and urine collected over 24 h were used to assess microbial-derived metabolites in response to a (poly)phenol-rich raspberry test drink. Results: PreDM-IR compared to the Reference group: (1) enriched Blautia obeum and Blautia wexlerae and depleted Bacteroides dorei and Coprococcus eutactus. Akkermansia muciniphila and Bacteroides spp. were depleted in the lean PreDM-IR subset; and (2) impaired microbial catabolism of select (poly)phenols resulting in lower 3,8-dihydroxy-urolithin (urolithin A), phenyl-γ-valerolactones and various phenolic acids concentrations (p < 0.05).