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https://www.readbyqxmd.com/read/28566880/immune-response-to-vaccines-in-children-with-celiac-disease
#1
EDITORIAL
Caterina Anania, Francesca Olivero, Alessandra Spagnolo, Claudio Chiesa, Lucia Pacifico
Celiac disease (CD) is an immune-mediated systemic condition evoked by ingestion of gluten and related prolamines in genetically susceptible subjects. The disease is featured by a variable combination of clinical signs, specific antibodies, HLA-DQ2 and HLA-DQ8 haplotypes, and enteropathy. Vaccination is the most potent intervention for infectious disease prevention. Several factors including age, gender, ethnicity, quality and quantity of vaccine antigen, doses, and route of administration can influence immune response to vaccination, although the main cause of variation in the responsiveness among vaccine recipients is host genetic variability...
May 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28514313/clinical-and-biological-correlations-in-celiac-disease-in-children-the-prospective-single-experience-of-a-romanian-tertiary-center-a-case-control-study-strobe-compliant-study
#2
Cristina Oana Marginean, Lorena Elena Meliţ, Roxana-Cristina Mareş, Maria Oana Mărginean, Septimiu Voidăzan, Minodora Dobreanu
Celiac disease-a chronic inflammatory disease of the intestine-is triggered by gluten or associated protein consumption.The aim of our study was to assess the sensitivity, specificity of the combined anti-transglutaminase 2 (TG2)/deamidated gliadin peptide antibodies (DGP), and antiendomisium antibodies (EMA), to determine the distribution of HLA-DQ2/DQ8 for the 140 tested patients, and also to evaluate the clinical and laboratory characteristics of patients admitted with the suspicion of celiac disease (CD)...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28468970/concomitant-disruption-of-cd4-and-cd8-genes-facilitates-the-development-of-double-negative-%C3%AE-%C3%AE-tcr-peripheral-t-cells-that-respond-robustly-to-staphylococcal-superantigen
#3
Vaidehi R Chowdhary, Ashton Krogman, Ashenafi Y Tilahun, Mariam P Alexander, Chella S David, Govindarajan Rajagopalan
Mature peripheral double negative T (DNT) cells expressing αβ TCR but lacking CD4/CD8 coreceptors play protective as well as pathogenic roles. To better understand their development and functioning in vivo, we concomitantly inactivated CD4 and CD8 genes in mice with intact MHC class I and class II molecules with the hypothesis that this would enable the development of DNT cells. We also envisaged that these DNT cells could be activated by bacterial superantigens in vivo as activation of T cells by superantigens does not require CD4 and CD8 coreceptors...
June 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28456018/unique-features-in-the-presentation-of-insulin-epitopes-in-autoimmune-diabetes-an-update
#4
REVIEW
Xiaoxiao Wan, Emil R Unanue
Although an autoimmune disease involves diverse self-antigens, the initiation stage may require recognition of a limited number. This concept is verified in the non-obese diabetic (NOD) mouse model of autoimmune diabetes, in which strong evidence points to insulin as the prime antigen. The NOD mouse bears the I-A(g7) class II-MHC molecules (MHCII) that share common biochemical features and peptidome selection with the human diabetes-susceptible HLA-DQ8. Furthermore, both NOD mice and patients with type 1 diabetes (T1D) display an early appearance of insulin autoantibodies (IAAs) and subsequent insulin-reactive T cell infiltration into the islets...
April 26, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28339124/gliadin-reactive-t-cells-in-italian-children-from-preventcd-cohort-at-high-risk-for-celiac-disease
#5
Alessandra Camarca, Renata Auricchio, Stefania Picascia, Olga Fierro, Mariantonia Maglio, Erasmo Miele, Basilio Malamisura, Luigi Greco, Riccardo Troncone, Carmen Gianfrani
BACKGROUND: Newborns at high risk for celiac disease (CD) were recruited in Italy in the context of the PreventCD Study and closely monitored for CD, from 4 months up to a mean age of 8 years at follow-up. The aim of our study was to investigate intestinal T cell reactivity to gliadin at the first clinical and/or serological signs of CD. METHODS: Gliadin-reactive T cell lines were generated from intestinal biopsies of 19 HLA-DQ2 or HLA-DQ8 positive children. At biopsy, 11 children had a diagnosis of acute CD, two of potential CD, and six were non-celiac controls...
March 24, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28316996/overview-of-celiac-disease-in-russia-regional-data-and-estimated-prevalence
#6
REVIEW
Lyudmila V Savvateeva, Svetlana I Erdes, Anton S Antishin, Andrey A Zamyatnin
Celiac disease (CD) is an autoimmune enteropathy triggered by the ingestion of dietary gluten from some cereals mainly in individuals carrying the HLA-DQ2 and/or HLA-DQ8 haplotypes. As an autoimmune disease, CD is manifested in the small intestine in the form of a progressive and reversible inflammatory lesion due to immune response to self-antigens. Indeed, CD is one of the most challenging medicosocial problems in current gastroenterology. At present, the global CD prevalence is estimated at approximately 1% based on data sent from different locations and available CD screening strategies used...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28228423/the-role-of-gluten-consumption-at-an-early-age-in-celiac-disease-development-a-further-analysis-of-the-prospective-preventcd-cohort-study
#7
Paula Crespo-Escobar, Maria Luisa Mearin, David Hervás, Renata Auricchio, Gemma Castillejo, Judit Gyimesi, Eva Martinez-Ojinaga, Katharina Werkstetter, Sabine Lisa Vriezinga, Ilma Rita Korponay-Szabo, Isabel Polanco, Riccardo Troncone, Els Stoopman, Sanja Kolaček, Raanan Shamir, Hania Szajewska, Sibylle Koletzko, Carmen Ribes-Koninckx
Background: We previously found that the introduction of small quantities of gluten at 4-6 mo of age did not reduce the risk of celiac disease (CD) in a group of high-risk children. However, the consumption of high amounts of gluten early in life has been suggested to increase CD risk.Objective: The aim of this study was to evaluate this hypothesis by using data from the previous study of the PreventCD trial (www.preventcd.com).Design: Gluten intake was prospectively quantified by using specific food records between 11 and 36 mo of age in 715 children positive for the human leukocyte antigen (HLA)-DQ2 and/or HLA-DQ8 from 5 European countries...
April 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28182308/mr-enterography-in-nonresponsive-adult-celiac-disease-correlation-with-endoscopic-pathologic-serologic-and-genetic-features
#8
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/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/28087959/a-study-on-hla-dr-dq-typing-in-adult-malay-patients-with-acute-amoebic-liver-abscess
#10
Z Nazli, N M S Azira, M Zeehaida, Z Nik Zairi, Y Nurul Khaiza, Y Maya Mazuwin
INTRODUCTION: Amoebiasis is a parasitic disease caused by Entamoeba histolytica that may lead to death in developing countries. Few important risk factors have been identified in the development of amoebic liver abscess (ALA). There are limited reports that suggest an association between antigens of the major histocompatibility complex (MHC) particularly class II antigens and ALA development. This present work aimed at studying the possible association of HLA antigens with ALA and disease severity...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28051174/characterization-of-globulin-storage-proteins-of-a-low-prolamin-cereal-species-in-relation-to-celiac-disease
#11
Gyöngyvér Gell, Krisztina Kovács, Gábor Veres, Ilma R Korponay-Szabó, Angéla Juhász
Brachypodium distachyon, a small annual grass with seed storage globulins as primary protein reserves was used in our study to analyse the toxic nature of non-prolamin seed storage proteins related to celiac disease. The main storage proteins of B. distachyon are the 7S globulin type proteins and the 11S, 12S seed storage globulins similar to oat and rice. Immunoblot analyses using serum samples from celiac disease patients were carried out followed by the identification of immune-responsive proteins using mass spectrometry...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28039141/genotyping-of-coeliac-specific-human-leucocyte-antigen-in-children-with-type-1-diabetes-does-this-screening-method-make-sense
#12
Elisabeth Binder, Martina Loinger, Annelies Mühlbacher, Michael Edlinger, Elisabeth Steichen, Dagmar Meraner, Lorin Loacker, Guenter Weigel, Thomas Müller, Elke Fröhlich-Reiterer, Sabine E Hofer
OBJECTIVES: Due to a high linkage disequilibrium of diabetes and coeliac-specific human leucocyte antigen (HLA) genotypes, the prevalence of coeliac disease (CD) in children and adolescents with diabetes mellitus type 1 (T1D) is much higher than in the general population. Recently, the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) revised new screening guidelines in which genotyping for coeliac-specific HLA alleles is recommended for high-risk patients as patients with T1D...
December 30, 2016: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28028075/an-increased-diagnostic-sensitivity-of-truncated-gad65-autoantibodies-in-type-1-diabetes-may-be-related-to-hla-dq8
#13
Axel Wester, Hanna Skärstrand, Alexander Lind, Anita Ramelius, Annelie Carlsson, Elisabeth Cedervall, Björn Jönsson, Sten A Ivarsson, Helena Elding Larsson, Karin Larsson, Bengt Lindberg, Jan Neiderud, Malin Fex, Carina Törn, Åke Lernmark
N-terminally truncated (96-585) GAD65 (tGAD65) autoantibodies may better delineate type 1 diabetes than full-length GAD65 (fGAD65) autoantibodies. We aimed to compare the diagnostic sensitivity and specificity between fGAD65 and tGAD65 autoantibodies for type 1 diabetes in relation to HLA-DQ. Sera from children and adolescents with newly diagnosed type 1 diabetes (n = 654) and healthy control subjects (n = 605) were analyzed in radiobinding assays for fGAD65 (fGADA), tGAD65 (tGADA), and commercial (125)I-GAD65 (RSRGADA) autoantibodies...
March 2017: Diabetes
https://www.readbyqxmd.com/read/27809896/the-increased-ability-to-present-citrullinated-peptides-is-not-unique-to-hla-se-molecules-arginine-to-citrulline-conversion-also-enhances-peptide-affinity-for-hla-dq-molecules
#14
Arieke S B Kampstra, Jurgen van Heemst, Antonis K Moustakas, George K Papadopoulos, Tom W J Huizinga, René E M Toes
BACKGROUND: Presentation of citrullinated neo-epitopes by HLA-DRB1 molecules that carry the shared epitope (SE) sequence was proposed to explain the association between HLA and seropositive RA. Although it is shown that several HLA-DRB1-SE molecules display enhanced binding affinities for citrullinated ligands, the ability of other HLA molecules to present citrullinated epitopes has not been investigated in a systematic manner. To better understand the HLA-RA connection, we aimed to investigate if the enhanced capacity to present arginine-to-citrulline-converted peptides is unique for HLA-SE alleles...
November 3, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27791035/mirna92a-targets-klf2-and-the-phosphatase-pten-signaling-to-promote-human-t-follicular-helper-precursors-in-t1d-islet-autoimmunity
#15
Isabelle Serr, Rainer W Fürst, Verena B Ott, Martin G Scherm, Alexei Nikolaev, Füsun Gökmen, Stefanie Kälin, Stephanie Zillmer, Melanie Bunk, Benno Weigmann, Nicole Kunschke, Brigitta Loretz, Claus-Michael Lehr, Benedikt Kirchner, Bettina Haase, Michael Pfaffl, Ari Waisman, Richard A Willis, Anette-G Ziegler, Carolin Daniel
Aberrant immune activation mediated by T effector cell populations is pivotal in the onset of autoimmunity in type 1 diabetes (T1D). T follicular helper (TFH) cells are essential in the induction of high-affinity antibodies, and their precursor memory compartment circulates in the blood. The role of TFH precursors in the onset of islet autoimmunity and signaling pathways regulating their differentiation is incompletely understood. Here, we provide direct evidence that during onset of islet autoimmunity, the insulin-specific target T-cell population is enriched with a C-X-C chemokine receptor type 5 (CXCR5)(+)CD4(+) TFH precursor phenotype...
October 25, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27706458/prevalence-of-genetic-susceptibility-for-celiac-disease-in-blood-donors-in-s%C3%A3-o-paulo-brazil
#16
Janaína Guilhem Muniz, Vera Lucia Sdepanian, Ulysses Fagundes
Background: Celiac disease is a permanent intolerance induced by gluten, which is expressed by T-cell mediated enteropathy, and has a high prevalence in the general population. There is evidence of a strong genetic predisposition to celiac disease. Objective: To determine the prevalence of genetic markers HLA-DQ2 and HLA-DQ8 in blood donors from São Paulo and measure human recombinant tissue transglutaminase antibody IgA class in HLA-DQ2 and HLA-DQ8 positive donors...
October 2016: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/27568928/diverse-t-cell-receptor-gene-usage-in-hla-dq8-associated-celiac-disease-converges-into-a-consensus-binding-solution
#17
Jan Petersen, Yvonne Kooy-Winkelaar, Khai Lee Loh, Mai Tran, Jeroen van Bergen, Frits Koning, Jamie Rossjohn, Hugh H Reid
In HLA-DQ8-associated celiac disease, TRAV26-2(+)-TRBV9(+) and TRAV8-3(+)-TRBV6(+) T cells recognize the immunodominant DQ8-glia-α1 epitope, whereupon a non-germline-encoded arginine residue played a key role in binding HLA-DQ8-glia-α1. Whether distinct T cell receptor (TCR) recognition modes exist for gliadin epitopes remains unclear. TCR repertoire analysis revealed populations of HLA-DQ8-glia-α1 and HLA-DQ8.5-glia-γ1 restricted TRAV20(+)-TRBV9(+) T cells that did not possess a non-germline-encoded arginine residue...
October 4, 2016: Structure
https://www.readbyqxmd.com/read/27486523/the-first-cases-of-collagenous-sprue-successfully-treated-with-thioguanine
#18
Tom van Gils, Tine van de Donk, Gerd Bouma, Foke van Delft, E Andra Neefjes-Borst, Chris J J Mulder
OBJECTIVE: Collagenous sprue (CS) is a rare form of small bowel enteropathy characterised by a thickened basement membrane and is, in most of the literature, reported as part of coeliac disease. Multiple treatment strategies are suggested in CS, but there is no standardised therapy. The aim of this series is to describe 4 cases of CS and to propose thioguanine (6-TG) treatment. DESIGN: We reviewed 4 cases of CS. Data were obtained from our prospective database of patients referred to our coeliac centre...
2016: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/27337150/suppression-of-inflammatory-arthritis-by-human-gut-derived-prevotella-histicola-in-humanized-mice
#19
Eric V Marietta, Joseph A Murray, David H Luckey, Patricio R Jeraldo, Abhinav Lamba, Robin Patel, Harvinder S Luthra, Ashutosh Mangalam, Veena Taneja
OBJECTIVE: The gut microbiome regulates host immune homeostasis. Rheumatoid arthritis (RA) is associated with intestinal dysbiosis. This study was undertaken to test the ability of a human gut-derived commensal to modulate immune response and treat arthritis in a humanized mouse model. METHODS: We isolated a commensal bacterium, Prevotella histicola, that is native to the human gut and has systemic immune effects when administered enterally. Arthritis-susceptible HLA-DQ8 mice were immunized with type II collagen and treated with P histicola...
December 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27323936/investigating-the-early-metabolic-fingerprint-of-celiac-disease-a-prospective-approach
#20
RANDOMIZED CONTROLLED TRIAL
Franca F Kirchberg, Katharina J Werkstetter, Olaf Uhl, Renata Auricchio, Gemma Castillejo, Ilma R Korponay-Szabo, Isabel Polanco, Carmen Ribes-Koninckx, Sabine L Vriezinga, Berthold Koletzko, M Luisa Mearin, Christian Hellmuth
OBJECTIVES AND STUDY: In the development of Celiac Disease (CD) both genetic and environmental factors play a crucial role. The Human Leukocyte Antigen (HLA)-DQ2 and HLA-DQ8 loci are strongly related to the disease and are necessary but not sufficient for the development of CD. Therefore, increasing interest lies in examining the mechanisms of CD onset from the early beginning. Differences in serum and urine metabolic profiles between healthy individuals and CD patients have been reported previously...
August 2016: Journal of Autoimmunity
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