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https://www.readbyqxmd.com/read/28208686/identification-of-autophagy-related-genes-and-their-regulatory-mirnas-associated-with-celiac-disease-in-children
#1
Sergio Comincini, Federico Manai, Cristina Meazza, Sara Pagani, Carolina Martinelli, Noemi Pasqua, Gloria Pelizzo, Marco Biggiogera, Mauro Bozzola
Celiac disease (CD) is a severe genetic autoimmune disorder, affecting about one in 100 people, where the ingestion of gluten leads to damage in the small intestine. Diagnosing CD is quite complex and requires blood tests and intestinal biopsy examinations. Controversy exists regarding making the diagnosis without biopsy, due to the large spectrum of manifesting symptoms; furthermore, small-intestinal gastroscopy examinations have a relatively complex management in the pediatric population. To identify novel molecular markers useful to increase the sensitivity and specificity in the diagnosis of pediatric CD patients, the expression levels of two key autophagy executor genes (ATG7 and BECN1) and their regulatory validated miRNAs (miR-17 and miR-30a, respectively) were analyzed by relative quantitative real-time-PCR on a cohort of confirmed CD patients compared to age-related controls...
February 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28190352/polyphenol-interactions-mitigate-the-immunogenicity-and-allergenicity-of-gliadins
#2
Maxime Perot, Roberta Lupi, Sylvain Guyot, Carine Delayre-Orthez, Pascale Gadonna-Widehem, Jean-Yves Thebaudin, Marie Bodinier, Colette Larre
Wheat allergy is an IgE-mediated disorder. Polyphenols, which are known to interact with certain proteins, could be used to reduce allergic reactions. In this study, we screened several polyphenol sources for their ability to interact with gliadins, mask epitopes and impact basophil degranulation. Polyphenol extracts from artichoke leaves, cranberries, apples and green tea leaves were examined. Of these extracts, the first three formed insoluble complexes with gliadins. Only the cranberry and apple extracts masked epitopes in dot blot assays using anti-gliadin IgG and IgE antibodies from patients with wheat allergies...
February 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28188172/t-cell-repertoires-in-refractory-coeliac-disease
#3
Julia Ritter, Karin Zimmermann, Korinna Jöhrens, Stefanie Mende, Anke Seegebarth, Britta Siegmund, Steffen Hennig, Kremena Todorova, Andreas Rosenwald, Severin Daum, Michael Hummel, Michael Schumann
OBJECTIVE: Refractory coeliac disease (RCD) is a potentially hazardous complication of coeliac disease (CD). In contrast to RCD type I, RCD type II is a precursor entity of enteropathy-associated T-cell lymphoma (EATL), which is associated with clonally expanding T-cells that are also found in the sequentially developing EATL. Using high-throughput sequencing (HTS), we aimed to establish the small-intestinal T-cell repertoire (TCR) in CD and RCD to unravel the role of distinct T-cell clonotypes in RCD pathogenesis...
February 10, 2017: Gut
https://www.readbyqxmd.com/read/28182308/mr-enterography-in-nonresponsive-adult-celiac-disease-correlation-with-endoscopic-pathologic-serologic-and-genetic-features
#4
Amir Reza Radmard, Amir Pejman Hashemi Taheri, Elham Salehian Nik, Soheil Kooraki, Shadi Kolahdoozan, Babak Mirminachi, Masoud Sotoudeh, Golnaz Ekhlasi, Reza Malekzadeh, Bijan Shahbazkhani
PURPOSE: To assess small bowel abnormalities on magnetic resonance enterography (MRE) in adult patients with nonresponsive celiac disease (CD) and investigate their associations with endoscopic, histopathologic, serologic, and genetic features. MATERIALS AND METHODS: This prospective study was carried out between September 2012 and August 2013. After approval by the Ethics Committee of our institution, informed consent was acquired from all participants. Forty consecutive patients with nonresponsive CD, aged 17-76 years, underwent MRE using a 1...
February 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28169607/the-gluten-free-diet-can-oats-and-wheat-starch-be-part-of-it
#5
J Rainer Poley
Objective and Conclusion: Uncertainty still exists about the use of oats and wheat starch as part of a gluten-free diet in patients with celiac disease (CD). This review should help to clarify the issues at hand. Whereas uncontaminated (from gluten/gliadin) oats and oats from cultivars not containing celiac-activating sequences of proline and glutamine can be used without risk of intestinal damage, wheat starch should not be used, unless it is free of gluten-that is, deglutinized-because even small amounts of gluten over time are able to induce small intestinal mucosal damage...
January 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28161854/diagnostic-yield-of-isolated-deamidated-gliadin-peptide-antibody-elevation-for-celiac-disease
#6
Nicholas A Hoerter, Sarah E Shannahan, Jorge Suarez, Suzanne K Lewis, Peter H R Green, Daniel A Leffler, Benjamin Lebwohl
BACKGROUND: Serologic testing for celiac disease includes tissue transglutaminase and endomysial antibodies. In addition to these tools, assays for deamidated gliadin peptide antibodies have been shown to have sensitivity and specificity that are comparable to tissue transglutaminase testing, and are increasingly being used for celiac disease testing. AIMS: The goal of this study is to evaluate the utility of deamidated gliadin peptide (DGP) testing in the setting of a negative tissue transglutaminase (TTG) IgA test...
February 4, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28159297/validation-and-application-of-a-quantitative-real-time-pcr-assay-to-detect-common-wheat-adulteration-of-durum-wheat-for-pasta-production
#7
Elisa Carloni, Giulia Amagliani, Enrica Omiccioli, Veronica Ceppetelli, Michele Del Mastro, Luca Rotundo, Giorgio Brandi, Mauro Magnani
Pasta is the Italian product par excellence and it is now popular worldwide. Pasta of a superior quality is made with pure durum wheat. In Italy, addition of Triticum aestivum (common wheat) during manufacturing is not allowed and, without adequate labeling, its presence is considered an adulteration. PCR-related techniques can be employed for the detection of common wheat contaminations. In this work, we demonstrated that a previously published method for the detection of T. aestivum, based on the gliadin gene, is inadequate...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28153851/transverse-myelitis-as-manifestation-of-celiac-disease-in-a-toddler
#8
Hilde Krom, Fleur Sprangers, René van den Berg, Marc Alexander Benninga, Angelika Kindermann
We present a 17-month-old girl with rapidly progressive unwillingness to sit, stand, play, and walk. Furthermore, she lacked appetite, vomited, lost weight, and had an iron deficiency. Physical examination revealed a cachectic, irritable girl with a distended abdomen, dystrophic legs with paraparesis, disturbed sensibility, and areflexia. An MRI scan revealed abnormal high signal intensity on T2-weighted images in the cord on the thoracic level, without cerebral abnormalities, indicating transverse myelitis (TM)...
February 2, 2017: Pediatrics
https://www.readbyqxmd.com/read/28149977/help-desk-is-an-intestinal-biopsy-necessary-when-the-blood-work-suggests-celiac-disease
#9
Clarissa Jb Hoff
It depends on the antibody levels in the blood work. Symptomatic patients with serologic levels of immunoglobulin A anti-tissue transglutaminase (IgA anti-tTG) or immunoglobulin G anti-deamidated gliadin peptide antibody (IgG anti-DGP) greater than 10 times the upper limits of normal--especially if they also are positive for endomysial antibodies (EMA) and human leukocyte antigen DQ2 (HLA-DQ2 or HLA-DQ8)--may not need an intestinal biopsy to confirm the diagnosis of celiac disease.
December 2016: Journal of Family Practice
https://www.readbyqxmd.com/read/28148736/gliadin-specific-cd8-t-cell-responses-restricted-by-hla-class-i-a-0101-and-b-0801-molecules-in-celiac-disease-patients
#10
Stefania Picascia, John Sidney, Alessandra Camarca, Giuseppe Mazzarella, Nicola Giardullo, Luigi Greco, Renata Auricchio, Salvatore Auricchio, Riccardo Troncone, Alessandro Sette, Carmen Gianfrani
Initial studies associated the HLA class I A*01 and B*08 alleles with celiac disease (CD) susceptibility. Subsequent analyses showed a primary association with HLA class II alleles encoding for the HLA DQ2.5 molecule. Because of the strong linkage disequilibrium of A*01 and B*08 alleles with the DR3-DQ2.5 haplotype and a recent genome-wide association study indicating that B*08 and B*39 are predisposing genes, the etiologic role of HLA class I in CD pathogenesis needs to be addressed. We screened gliadin proteins (2α-, 2ω-, and 2γ-gliadin) using bioinformatic algorithms for the presence of peptides predicted to bind A*0101 and B*0801 molecules...
February 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28121432/label-free-detection-of-gliadin-in-food-by-quartz-crystal-microbalance-based-immunosensor
#11
Riccardo Funari, Irma Terracciano, Bartolomeo Della Ventura, Sara Ricci, Teodoro Cardi, Nunzio D'Agostino, Raffaele Velotta
Gluten is a protein composite found in wheat and related grains including barley, rye, oat, and all their species and hybrids. Gluten matrix is a biomolecular network of gliadins and glutenins that contribute to the texture of pastries, breads, and pasta. Gliadins are mainly responsible for celiac disease, one of the most widespread food-related pathologies in Western world. In view of the importance of gliadin proteins, by combining the quartz crystal microbalance technology, a cheap and robust piezoelectric transducer, with the so-called photonic immobilization technique, an effective surface functionalization method that provides spatially oriented antibodies on gold substrates, we realized a sensitive and reliable biosensor for quantifying these analytes extracted from real samples in a very short time...
February 6, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28088490/microwave-based-treatments-of-wheat-kernels-do-not-abolish-gluten-epitopes-implicated-in-celiac-disease
#12
Carmen Gianfrani, Gianfranco Mamone, Barbara la Gatta, Alessandra Camarca, Luigia Di Stasio, Francesco Maurano, Stefania Picascia, Vito Capozzi, Giuseppe Perna, Gianluca Picariello, Aldo Di Luccia
Microwave based treatment (MWT) of wet wheat kernels induced a striking reduction of gluten, up to <20 ppm as determined by R5-antibodybased ELISA, so that wheat could be labeled as gluten-free. In contrast, analysis of gluten peptides by G12 antibody-based ELISA, mass spectrometry-based proteomics and in vitro assay with T cells of celiac subjects, indicated no difference of antigenicity before and after MWT. SDS-PAGE analysis and Raman spectroscopy demonstrated that MWT simply induced conformational modifications, reducing alcohol solubility of gliadins and altering the access of R5-antibody to the gluten epitopes...
January 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28087531/salivary-gluten-degradation-and-oral-microbial-profiles-in-health-and-celiac-disease
#13
Na Tian, Lina Faller, Daniel A Leffler, Ciaran P Kelly, Joshua Hansen, Jos A Bosch, Guoxian Wei, Bruce J Paster, Detlef Schuppan, Eva J Helmerhorst
: Celiac disease (CD) is a chronic immune-mediated enteropathy induced by dietary gluten in genetically predisposed individuals. Saliva harbors the second highest bacterial load of the GI tract after the colon. Moreover, saliva contains gluten-degrading enzymes produced by oral bacteria that may modify gluten processing in the intestine and susceptibility to celiac disease (CD). AIM: To investigate salivary enzymatic activities and oral microbial profiles in healthy subjects vs patients with classical and refractory CD...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28078412/simultaneous-determination-of-four-food-allergens-using-compact-disc-immunoassaying-technology
#14
Ahmed Ali Badran, Sergi Morais, Ángel Maquieira
A multiplex competitive microimmunoassay for the simultaneous determination of gliadin, casein, β-lactoglobulin, and ovalbumin is presented. The assay in microarray format is performed on a DVD where the allergens are physisorbed on the polycarbonate surface of the disc. The immunointeraction is detected using a mixture of specific gold-labeled antibodies and the signal amplified with the silver enhancement method. The optical density of the precipitate, read by a DVD drive, is related to the concentration of the four allergens in sample...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28035551/agy-a-novel-egg-yolk-derived-anti-gliadin-antibody-is-safe-for-patients-with-celiac-disease
#15
Dory A Sample, Hoon H Sunwoo, Hien Q Huynh, Heather L Rylance, Cheri L Robert, Bi-Wen Xu, Sung H Kang, Naiyana Gujral, Levinus A Dieleman
BACKGROUND: Celiac disease (CD) is a gluten-triggered autoimmune disorder of the small intestine. A lifelong gluten-free diet (GFD) is the only approved treatment; however, strict adherence is difficult and many suffer from inadvertent gluten exposure. Oral egg yolk anti-gliadin antibody (AGY) is a novel treatment to neutralize gluten and may improve the efficacy of the GFD. AIMS: To determine the safety, tolerability, and potential efficacy of AGY in patients with CD...
December 29, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28008283/validation-of-celiac-disease-diagnoses-recorded-in-the-danish-national-patient-register-using-duodenal-biopsies-celiac-disease-specific-antibodies-and-human-leukocyte-antigen-genotypes
#16
Stine Dydensborg Sander, Ketil Størdal, Tine Plato Hansen, Anne-Marie Nybo Andersen, Joseph A Murray, Søren Thue Lillevang, Steffen Husby
PURPOSE: The purpose of this study was to validate the celiac disease diagnoses recorded in the Danish National Patient Register. To validate the diagnoses, we used information on duodenal biopsies from a national register of pathology reports (the Patobank) and information on celiac disease-specific antibodies and human leukocyte antigen (HLA) genotypes obtained from patient medical records. PATIENTS AND METHODS: We included all the children who were born from 1995 to 2012 and who were registered as having celiac disease in the Danish National Patient Register...
2016: Clinical Epidemiology
https://www.readbyqxmd.com/read/27979224/influence-of-glycosylation-of-deamidated-wheat-gliadin-on-its-interaction-mechanism-with-resveratrol
#17
Chaoying Qiu, Yong Wang, Yinglai Teng, Mouming Zhao
Gliadin is a main composition of wheat storage protein with unique characteristics. Polyphenol with health benefits tends to form complex with protein. In this study, glycosylation of deamidated wheat gliadin (gliadin) was carried out. Fluorescence quenching was applied to evaluate their binding mechanisms with resveratrol. Results showed that glycosylation could increase the solubility and decrease the surface hydrophobicity of gliadin. Both gliadin and glycosylated gliadin have strong affinity with resveratrol...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27979087/impact-of-gluten-friendly%C3%A2-technology-on-wheat-kernel-endosperm-and-gluten-protein-structure-in-seeds-by-light-and-electron-microscopy
#18
L Landriscina, P D'Agnello, A Bevilacqua, M R Corbo, M Sinigaglia, C Lamacchia
The main aim of this paper was to assess the impact of Gluten-Friendly™ (GF) technology (Italian priority patent n° 102015000084813 filed on 17th December 2015) on wheat kernel endosperm morphology and gluten protein structure, using SEM, light and immunofluorescent microscopy. Microscopy was combined with immunodetection with specific antibodies for gliadins, γ-gliadins, LMW subunits and antigenic epitopes to gain a better understanding of the technology at a molecular level. The results showed significant changes to gluten proteins after GF treatment; cross-reactivity towards the antibodies recognizing almost the entire range of gluten proteins as well as the antigenic epitopes through the sequences QQSF, QQSY, PEQPFPQGC and QQPFP was significantly reduced...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27942245/molecular-diversity-of-%C3%AE-gliadin-expressed-genes-in-genetically-contrasted-spelt-triticum-aestivum-ssp-spelta-accessions-and-comparison-with-bread-wheat-t-aestivum-ssp-aestivum-and-related-diploid-triticum-and-aegilops-species
#19
Benjamin Dubois, Pierre Bertin, Dominique Mingeot
The gluten proteins of cereals such as bread wheat (Triticum aestivum ssp. aestivum) and spelt (T. aestivum ssp. spelta) are responsible for celiac disease (CD). The α-gliadins constitute the most immunogenic class of gluten proteins as they include four main T-cell stimulatory epitopes that affect CD patients. Spelt has been less studied than bread wheat and could constitute a source of valuable diversity. The objective of this work was to study the genetic diversity of spelt α-gliadin transcripts and to compare it with those of bread wheat...
2016: Molecular Breeding: New Strategies in Plant Improvement
https://www.readbyqxmd.com/read/27920409/prevalence-of-igg-mediated-food-intolerance-among-patients-with-allergic-symptoms
#20
Zahid Shakoor, Abrar AlFaifi, Bayan AlAmro, Lama Nabil AlTawil, Rana Yazid AlOhaly
BACKGROUND: Food intolerance mediated by food specific IgG antibodies has been implicated in a variety of disorders. OBJECTIVES: To assess the prevalence of food specific IgG antibodies among patients clinically presenting with allergic symptoms lacking laboratory evidence of allergy. DESIGN: Descriptive retrospective cross-sectional study. SETTING: King Khalid University Hospital, Riyadh between 2010-2015. PATIENTS AND METHODS: Patients were screened for food specific IgG antibodies...
November 2016: Annals of Saudi Medicine
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