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Urbonas V, Sadauskaite J, Varnas D. Population-Based Screening for Coeliac Disease in Lithuanian Children from 2009 to 2014. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1630. [PMID: 37763749 PMCID: PMC10534554 DOI: 10.3390/medicina59091630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/17/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
Background and Objectives. Coeliac disease is an autoimmune disorder provoked by a dietary group of proteins called gluten in genetically predisposed individuals. Over the past several decades, the prevalence of coeliac disease has been steadily growing and it is now recognized to be occurring worldwide. The prevalence varies greatly between ethnic, racial groups and regionally. Such variability makes local epidemiological studies important for spreading awareness and setting a threshold for suspicion of coeliac disease. We explored the potential application of a quick point-of-care test for the purpose of detecting a presence of IgA class TG2 antibodies for coeliac disease and screening in a Lithuanian pediatric population. Previously, there were no data regarding coeliac disease prevalence in Lithuania. Materials and Methods. Overall, we included 1458 children 11-13 years of age from several Lithuanian schools selected randomly in this study. Utilizing one point-of-care test using a single blood sample taken from a fingertip, we identified the existence of IgA class TG2 antibodies. Only children whose parents gave consent were enrolled in the study. Those with positive IgA class TG2-ab were directed to a tertiary hospital for additional clinical assessment and confirmation of suspected coeliac disease. Results. A total of two (0.14%) of the 1458 enrolled children were detected with the presence of TG2 antibodies and the coeliac disease diagnosis was further confirmed with histological examination of duodenal biopsy samples. Additionally, we checked that patients had not previously reported any clinical symptoms and signs that could suggest coeliac disease or any other disease of the gastrointestinal tract. Conclusions. The detected prevalence of coeliac disease in the Lithuanian pediatric population is 1:729. The rapid finger prick test for the presence of IgA class TG2 antibodies is a reasonable and accurate method to screen for celiac disease in children.
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Affiliation(s)
- Vaidotas Urbonas
- Clinic of Children's Diseases, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Jolita Sadauskaite
- Clinic of Children's Diseases, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Dominykas Varnas
- Clinic of Children's Diseases, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
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The Role of HLA in the Association between IgA Deficiency and Celiac Disease. DISEASE MARKERS 2021; 2021:8632861. [PMID: 35186163 PMCID: PMC8856801 DOI: 10.1155/2021/8632861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/17/2021] [Accepted: 11/10/2021] [Indexed: 01/18/2023]
Abstract
Selective IgA deficiency (SIgAD) is the most frequent primary immune defect. Since SIgAD is not characterized by relevant infectious issues in most cases, it is often diagnosed during the diagnostic work up of several and different autoimmune disorders, which are associated with this primary immune defect. The genetic background of SIgAD is complex and three HLA haplotypes resulted to be more frequently associated with it; in detail, two of them include HLA-DQB1∗02 allelic variants, which are essential predisposing factors to develop Celiac Disease (CD). Here, we discuss the evidence regarding the role of HLA in the etiopathogenesis of SIgAD and its association with CD. Actually, the HLA region seems to play a modest role in the genetic predisposition to SIgAD and we may speculate that the association with the HLA-DQB1∗02 alleles (or haplotypes including them) could derive from its link with CD. Indeed, SIgAD and some related immunological alterations are likely to predispose to several autoimmune diseases (with and despite different HLA backgrounds), including CD, which is relatively common and directly associated with the HLA-DQB1∗02 allelic variants coding the DQ2 heterodimer. Further and specific studies are needed to make final conclusions in this regard.
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Imrei M, Németh D, Szakács Z, Hegyi P, Kiss S, Alizadeh H, Dembrovszky F, Pázmány P, Bajor J, Párniczky A. Increased Prevalence of Celiac Disease in Patients with Cystic Fibrosis: A Systematic Review and Meta-Analysis. J Pers Med 2021; 11:jpm11090859. [PMID: 34575636 PMCID: PMC8470465 DOI: 10.3390/jpm11090859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 12/11/2022] Open
Abstract
Objectives: Immune regulation seems to be altered in cystic fibrosis (CF), thus potentially predisposing patients to developing autoimmune diseases (AID). In this meta-analysis, we aimed to evaluate the prevalence of celiac disease (CeD) among CF patients as by far the most commonly reported autoimmune disease in this population and, secondly, to review the observations on other, less frequently studied autoimmune diseases. Methods: We conducted a systematic literature search for studies that discussed AIDs among CF patients. Following standard selection and data collection, we calculated pooled raw prevalence with 95% confidence intervals (CI) for biopsy-verified CeD and seropositivity. Results: Out of the 21 eligible studies, 15 reported on CeD. Pooled prevalence of biopsy-verified CeD was 1.8% (CI 1.1–2.7%) according to a homogeneous dataset from six prospective, consecutive screening studies, while it proved to be 2.3% (CI 1.1–4.7%) according to a heterogeneous dataset from the other studies. Tissue transglutaminase IgA positivity was detected in 4.5% of CF cases (CI 2.8–6.9%), while tissue transglutaminase IgA–endomysial antibody IgA double positivity was found in 2.4% of them (CI 1.5–3.9%). Findings on other AIDs were strongly limited. Conclusions: The pooled prevalence of CeD in CF seemed to be more than twice as high compared to the global prevalence; therefore, routine screening of CeD could be considered in CF.
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Affiliation(s)
- Marcell Imrei
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
| | - Dávid Németh
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
| | - Zsolt Szakács
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
- Division of Gastroenterology, First Department of Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary;
| | - Péter Hegyi
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
- Centre for Translational Medicine, Department of Medicine, University of Szeged, Tisza Lajos krt. 109., H-6725 Szeged, Hungary
| | - Szabolcs Kiss
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
- Doctoral School of Clinical Medicine, University of Szeged, Tisza Lajos krt. 109., H-6725 Szeged, Hungary
| | - Hussain Alizadeh
- Division of Hematology, First Department of Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary;
| | - Fanni Dembrovszky
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
| | - Piroska Pázmány
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
| | - Judit Bajor
- Division of Gastroenterology, First Department of Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary;
| | - Andrea Párniczky
- Institute for Translational Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary; (M.I.); (D.N.); (Z.S.); (P.H.); (S.K.); (F.D.); (P.P.)
- János Szentágothai Research Centre, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary
- Heim Pál National Pediatric Institute, H-1089 Budapest, Hungary
- Correspondence:
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Roberts SE, Morrison-Rees S, Thapar N, Benninga MA, Borrelli O, Broekaert I, Dolinsek J, Martin-de-Carpi J, Mas E, Miele E, Pienar C, Ribes-Koninckx C, Thomassen RA, Thomson M, Tzivinikos C, Thorne K, John A, Williams JG. Systematic review and meta-analysis: the incidence and prevalence of paediatric coeliac disease across Europe. Aliment Pharmacol Ther 2021; 54:109-128. [PMID: 34115894 DOI: 10.1111/apt.16337] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 09/30/2020] [Accepted: 03/04/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Coeliac disease is one of the most prevalent immune-mediated gastrointestinal disorders in children. AIM To review the incidence and prevalence of paediatric coeliac disease, and their trends, regionally across Europe, overall and according to age at diagnosis. METHODS Systematic review and meta-analysis from January 1, 1950 to December 31, 2019, based on PubMed, CINAHL and the Cochrane Library, searches of grey literature and websites and hand searching of reference lists. A total of 127 eligible studies were included. RESULTS The prevalence of previously undiagnosed coeliac disease from screening surveys (histology based) ranged from 0.10% to 3.03% (median = 0.70%), with a significantly increasing annual trend (P = 0.029). Prevalence since 2000 was significantly higher in northern Europe (1.60%) than in eastern (0.98%), southern (0.69%) and western (0.60%) Europe. Large increases in the incidence of diagnosed coeliac disease across Europe have reached 50 per 100 000 person-years in Scandinavia, Finland and Spain. The median age at diagnosis increased from 1.9 years before 1990 to 7.6 since 2000. Larger increases in incidence were found in older age groups than in infants and ages <5 years. CONCLUSIONS Paediatric coeliac disease incidence and prevalence have risen across Europe and appear highest in Scandinavia, Finland and Spain. The most recent evidence shows large increases in incidence in most regions, but stabilisation in some (notably Sweden and Finland). Sharp increases in the age at diagnosis may reflect increases in milder and asymptomatic cases diagnosed since reliable serology testing became widely used, through endomysial antibodies after 1990 and tissue transglutaminase antibodies around 2000.
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Zhang J, van Oostrom D, Li J, Savelkoul HFJ. Innate Mechanisms in Selective IgA Deficiency. Front Immunol 2021; 12:649112. [PMID: 33981304 PMCID: PMC8107477 DOI: 10.3389/fimmu.2021.649112] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 04/07/2021] [Indexed: 12/12/2022] Open
Abstract
Selective IgA deficiency (SIgAD), characterized by a serum IgA level below 0.07 mg/ml, while displaying normal serum levels of IgM and IgG antibodies, is the most frequently occurring primary immunodeficiency that reveals itself after the first four years after birth. These individuals with SIgAD are for the majority healthy and even when they are identified they are usually not investigated further or followed up. However, recent studies show that newborns and young infants already display clinical manifestations of this condition due to aberrancies in their immune defense. Interestingly, there is a huge heterogeneity in the clinical symptoms of the affected individuals. More than 50% of the affected individuals do not have clinical symptoms, while the individuals that do show clinical symptoms can suffer from mild to severe infections, allergies and autoimmune diseases. However, the reason for this heterogeneity in the manifestation of clinical symptoms of the individuals with SIgAD is unknown. Therefore, this review focusses on the characteristics of innate immune system driving T-cell independent IgA production and providing a mechanism underlying the development of SIgAD. Thereby, we focus on some important genes, including TNFRSF13B (encoding TACI), associated with SIgAD and the involvement of epigenetics, which will cover the methylation degree of TNFRSF13B, and environmental factors, including the gut microbiota, in the development of SIgAD. Currently, no specific treatment for SIgAD exists and novel therapeutic strategies could be developed based on the discussed information.
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Affiliation(s)
- Jingyan Zhang
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences (CAAS), Lanzhou, China
| | - Dèlenn van Oostrom
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - JianXi Li
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences (CAAS), Lanzhou, China
| | - Huub F. J. Savelkoul
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
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Global perspectives on primary immune deficiency diseases. STIEHM'S IMMUNE DEFICIENCIES 2020. [PMCID: PMC7258797 DOI: 10.1016/b978-0-12-816768-7.00054-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Koenen MH, van Montfrans JM, Sanders EAM, Bogaert D, Verhagen LM. Immunoglobulin A deficiency in children, an undervalued clinical issue. Clin Immunol 2019; 209:108293. [PMID: 31678364 DOI: 10.1016/j.clim.2019.108293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/23/2019] [Accepted: 10/23/2019] [Indexed: 12/24/2022]
Abstract
Immunoglobulin A (IgA) is the principal antibody in secretions that bathe the gastrointestinal and respiratory mucosal surfaces and acts as an important first line of defense against invasion of pathogenic micro-organisms. The reported prevalence rate of complete IgA deficiency in healthy children ranges from 1:170 to 1:400, and as a solitary condition, it is often considered of limited clinical importance. However, patients with IgA deficiency can develop recurrent respiratory and gastrointestinal infections, as well as allergic and autoimmune diseases. In children referred for recurrent respiratory tract infections, the observed prevalence rate increases more than tenfold. This review discusses several aspects of IgA deficiency in children, including immunologic and microbiome changes in early childhood and the potential consequences of this condition in later life. It illustrates the importance of early identification of children with impaired IgA production who deserve appropriate clinical care and follow-up.
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Affiliation(s)
- M H Koenen
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
| | - J M van Montfrans
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
| | - E A M Sanders
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands; Centre for Infectious Disease Control (Cib), National Institute of Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 BA Bilthoven, the Netherlands.
| | - D Bogaert
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands; Center for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Little France Crescent 47, EH16 4TJ Edinburgh, United Kingdom.
| | - L M Verhagen
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
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Diagnostic Accuracy of Point of Care Tests for Diagnosing Celiac Disease: A Systematic Review and Meta-Analysis. J Clin Gastroenterol 2019; 53:535-542. [PMID: 29912751 DOI: 10.1097/mcg.0000000000001081] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
GOALS To perform a systematic review and meta-analysis to estimate the overall diagnostic accuracy of point of care tests (POCTs) for diagnosing celiac disease (CD). BACKGROUND Recently, POCTs for CD have been developed and are commercially available. Studies have reported significant variability in their sensitivity (70% to 100%) and specificity (85% to 100%). STUDY We searched MEDLINE, EMBASE databases, and the Cochrane library through June 2017. Positive reference test was defined as villous atrophy along with positive celiac-specific serology and/or clinical improvement after gluten-free diet. Normal duodenal biopsy was defined as negative reference test. Bivariate random-effect model was used to present the summary estimates of sensitivities and specificities along with 95% confidence regions We assessed methodologic quality using the quality assessment of diagnostic accuracy studies-2 tool. RESULTS The pooled sensitivity and specificity of all POCTs (based on tTG or DGP or tTG+Anti-gliadin antibodies) for diagnosing CD were 94.0% [95% confidence interval (CI), 89.9-96.5] and 94.4% (95% CI, 90.9-96.5), respectively. The pooled positive and negative likelihood ratios for POCTs were 16.7 and 0.06, respectively. The pooled sensitivity and specificity for IgA-tTG-based POCTs were 90.5% (95% CI, 82.3-95.1) and 94.8% (95% CI, 92.5-96.4), respectively. CONCLUSIONS The pooled sensitivity and specificity of POCTs in diagnosing CD are high. POCTs may be used to screen for CD, especially in areas with limited access to laboratory-based testing. Further research assessing the diagnostic accuracy of individual POCTs and comparing it with other available POCTs is needed.
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Vörös E, Piety NZ, Strachan BC, Lu M, Shevkoplyas SS. Centrifugation-free washing: A novel approach for removing immunoglobulin A from stored red blood cells. Am J Hematol 2018; 93:518-526. [PMID: 29285804 DOI: 10.1002/ajh.25026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/20/2017] [Accepted: 12/26/2017] [Indexed: 01/28/2023]
Abstract
Washed red blood cells (RBCs) are indicated for immunoglobulin A (IgA) deficient recipients. Centrifugation-based cell processors commonly used by hospital blood banks cannot consistently reduce IgA below the recommended levels, hence double washing is frequently required. Here, we describe a prototype of a simple, portable, disposable system capable of washing stored RBCs without centrifugation, while reducing IgA below 0.05 mg/dL in a single run. Samples from RBC units (n = 8, leukoreduced, 4-6 weeks storage duration) were diluted with normal saline to a hematocrit of 10%, and then washed using either the prototype washing system, or via conventional centrifugation. The efficiency of the two washing methods was quantified and compared by measuring several key in vitro quality metrics. The prototype of the washing system was able to process stored RBCs at a rate of 300 mL/hour, producing a suspension of washed RBCs with 43 ± 3% hematocrit and 86 ± 7% cell recovery. Overall, the two washing methods performed similarly for most measured parameters, lowering the concentration of free hemoglobin by >4-fold and total free protein by >10-fold. Importantly, the new washing system reduced the IgA level to 0.02 ± 0.01 mg/mL, a concentration 5-fold lower than that produced by conventional centrifugation. This proof-of-concept study showed that centrifugation may be unnecessary for washing stored RBCs. A simple, disposable, centrifugation-free washing system could be particularly useful in smaller medical facilities and resource limited settings that may lack access to centrifugation-based cell processors.
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Affiliation(s)
- Eszter Vörös
- Department of Biomedical Engineering; University of Houston; Houston Texas 77204
| | - Nathaniel Z. Piety
- Department of Biomedical Engineering; University of Houston; Houston Texas 77204
| | - Briony C. Strachan
- Department of Biomedical Engineering; University of Houston; Houston Texas 77204
| | - Madeleine Lu
- Department of Biomedical Engineering; University of Houston; Houston Texas 77204
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Mehr S, Hsu P, Campbell D. Immunodeficiency in CHARGE syndrome. AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS 2017; 175:516-523. [PMID: 29159871 DOI: 10.1002/ajmg.c.31594] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 10/06/2017] [Accepted: 10/08/2017] [Indexed: 12/17/2022]
Abstract
Immunodeficiency can occur in CHARGE syndrome, with immunophenotypes including reduction in T-cell counts, combined T-B cell defects rarely requiring antibiotic prophylaxis or immunoglobulin replacement, and severe combined immunodeficiency, which is fatal without immune reconstitution. However, the prevalence of immunodeficiency in CHARGE syndrome remains unclear with few prospective studies. In this review, we examine the existing literature covering immunodeficiency associated with CHARGE syndrome, compare these with immunodeficiencies reported in 22q11.2 deletion syndrome (a condition that shares many phenotypic characteristics with CHARGE syndrome) and suggest future research priorities.
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Affiliation(s)
- Sam Mehr
- Department of Allergy and Immunology, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Allergy and Immunology, Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Peter Hsu
- Department of Allergy and Immunology, Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Dianne Campbell
- Department of Allergy and Immunology, Children's Hospital at Westmead, Sydney, New South Wales, Australia.,The Discipline of Paediatrics and Child Health, University of Sydney, Sydney, New South Wales, Australia
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