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Tye‐Din JA. Evolution in coeliac disease diagnosis and management. JGH Open 2024; 8:e13107. [PMID: 38957478 PMCID: PMC11217771 DOI: 10.1002/jgh3.13107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/04/2024] [Accepted: 05/28/2024] [Indexed: 07/04/2024]
Abstract
The traditional gut-centric view of coeliac disease is evolving as immune and genetic insights underscore the central importance of a systemic, T cell immune response to gluten in disease pathogenesis. As the field increasingly recognize the limitations of small intestinal histology as the diagnostic standard, data supporting the accuracy of an immune (serologic) diagnosis of coeliac disease - well demonstrated in children - are growing for adults. Novel biomarkers such as interleukin-2 that identify the gluten-specific T cell demonstrate high sensitivity and specificity for coeliac disease and offer the potential for a diagnostic approach that avoids the need for gluten challenge. Asymptomatic disease and manifestations outside the gut pose considerable challenges for diagnosis using a case-finding strategy and enthusiasm for population screening is growing. The gluten-free diet remains a highly restrictive treatment and there is a paucity of controlled data to inform a safe gluten intake threshold. Ongoing symptoms and enteropathy are common and require systematic evaluation. Slowly-responsive disease is prevalent in the older patient diagnosed with coeliac disease, and super-sensitivity to gluten is an emerging concept that may explain many cases of nonresponsive disease. While there is great interest in developing novel therapies for coeliac disease, no drug has yet been registered. Efficacy studies are generally assessing drugs in patients with treated coeliac disease who undergo gluten challenge or in patients with nonresponsive disease; however, substantial questions remain around specific endpoints relevant for patients, clinicians and regulatory agencies and optimal trial design. Novel immune tools are providing informative readouts for clinical trials and are now shaping their design.
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Affiliation(s)
- Jason A Tye‐Din
- Immunology DivisionWalter and Eliza Hall InstituteParkvilleVictoriaAustralia
- Department of Medical BiologyUniversity of MelbourneParkvilleVictoriaAustralia
- Department of GastroenterologyThe Royal Melbourne HospitalParkvilleVictoriaAustralia
- Centre for Food & Allergy ResearchThe Murdoch Children's Research InstituteParkvilleVictoriaAustralia
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Elwenspoek M, Banks J, Desale PP, Watson J, Whiting P. Exploring factors influencing quality of life variability among individuals with coeliac disease: an online survey. BMJ Open Gastroenterol 2024; 11:e001395. [PMID: 38830687 PMCID: PMC11149133 DOI: 10.1136/bmjgast-2024-001395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 04/21/2024] [Indexed: 06/05/2024] Open
Abstract
OBJECTIVE Patients with coeliac disease (CD) need to follow a strict gluten-free diet to manage symptoms and prevent complications. Restrictions imposed by the diet can be challenging and affect quality of life (QoL). We explored sources of variation in QoL among patients with CD. DESIGN We conducted an online survey of coeliac patients in the UK, including a CD-specific QoL tool (CD-QOL V.1.0), questions on diet adherence and an optional comment box at the end. The survey was disseminated via social media and went live between January and March 2021. We performed multiple linear regression and free text analysis. RESULTS We found a median CD-QOL score of 61 (IQR 44-76, range 4-100, n=215) suggesting good QoL (Good >59); however, the individual QoL scores varied significantly. Regression analyses showed that people who found diet adherence difficult and people adhering very strictly had a lower QoL. Free text comments suggested that people who adhered very strictly may do so because they have symptoms with minimal gluten exposure. People who found diet adherence difficult may be people who only recently started the diet and were still adjusting to its impact. Comments also highlighted that individuals with CD often perceive a lack of adequate follow-up care and support after diagnosis. CONCLUSION Better support and follow-up care is needed for people with CD to help them adjust to a gluten-free diet and minimise the impact on their QoL. Better education and increased awareness are needed among food businesses regarding cross-contamination to reduce anxiety and accidental gluten exposure.
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Affiliation(s)
- Martha Elwenspoek
- University of Bristol Population Health Sciences, Bristol, UK
- NIHR ARC West, Bristol, UK
| | - Jonathan Banks
- University of Bristol Population Health Sciences, Bristol, UK
- NIHR ARC West, Bristol, UK
| | | | - Jessica Watson
- University of Bristol Population Health Sciences, Bristol, UK
- NIHR ARC West, Bristol, UK
| | - Penny Whiting
- University of Bristol Population Health Sciences, Bristol, UK
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3
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Pinto-Sanchez MI, Blom JJ, Gibson PR, Armstrong D. Nutrition Assessment and Management in Celiac Disease. Gastroenterology 2024; 167:116-131.e1. [PMID: 38593924 DOI: 10.1053/j.gastro.2024.02.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 04/11/2024]
Abstract
Celiac disease (CeD) is the most common immune condition affecting the gastrointestinal tract; it is triggered by gluten and the only available treatment is a strict gluten-free diet (GFD). Therefore, for patients with CeD, adopting a GFD is not a lifestyle choice. The major problem is that a GFD is restrictive and, like all restrictive diets, it has the potential for adverse nutritional outcomes, especially if adopted for a long term. It is well known that GFD can be nutritionally inadequate and is frequently associated with vitamin and mineral deficiencies; it is also associated with excessive sugar and fat intake, particularly when gluten-free substitutes are consumed. Consequently, people with CeD are affected by higher rates of overweight and obesity and metabolic complications, such as fatty liver and cardiovascular disease. Therefore, assessment of nutritional status and diet quality at diagnosis and while on a long-term GFD is key in the management of CeD. This narrative review addresses nutritional considerations in CeD and management of common challenges associated with a GFD.
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Affiliation(s)
- M Ines Pinto-Sanchez
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Jedid-Jah Blom
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Peter R Gibson
- Central Clinical School, Department of Gastroenterology, Monash University, Clayton, Victoria, Australia
| | - David Armstrong
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada.
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Malamut G, Soderquist CR, Bhagat G, Cerf-Bensussan N. Advances in Nonresponsive and Refractory Celiac Disease. Gastroenterology 2024; 167:132-147. [PMID: 38556189 DOI: 10.1053/j.gastro.2024.02.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/04/2024] [Accepted: 02/20/2024] [Indexed: 04/02/2024]
Abstract
Nonresponsive celiac disease (CeD) is relatively common. It is generally attributed to persistent gluten exposure and resolves after correction of diet errors. However, other complications of CeD and disorders clinically mimicking CeD need to be excluded. Novel therapies are being evaluated to facilitate mucosal recovery, which might benefit patients with nonresponsive CeD. Refractory CeD (RCeD) is rare and is divided into 2 types. The etiology of type I RCeD is unclear. A switch to gluten-independent autoimmunity is suspected in some patients. In contrast, type II RCeD represents a low-grade intraepithelial lymphoma. Type I RCeD remains a diagnosis of exclusion, requiring ruling out gluten intake and other nonmalignant causes of villous atrophy. Diagnosis of type II RCeD relies on the demonstration of a clonal population of neoplastic intraepithelial lymphocytes with an atypical immunophenotype. Type I RCeD and type II RCeD generally respond to open-capsule budesonide, but the latter has a dismal prognosis due to severe malnutrition and frequent progression to enteropathy-associated T-cell lymphoma; more efficient therapy is needed.
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Affiliation(s)
- Georgia Malamut
- Department of Gastroenterology, Assistance Publique-Hôpitaux de Paris Centre-Université Paris Cité, Hôpital Cochin, Paris, France; Laboratory of Intestinal Immunity, INSERM UMR 1163-Institut Imagine, Université Paris Cité, Paris, France.
| | - Craig R Soderquist
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Govind Bhagat
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Nadine Cerf-Bensussan
- Laboratory of Intestinal Immunity, INSERM UMR 1163-Institut Imagine, Université Paris Cité, Paris, France.
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5
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Stefanolo JP, Segura V, Grizzuti M, Heredia A, Comino I, Costa AF, Puebla R, Temprano MP, Niveloni SI, de Diego G, Oregui ME, Smecuol EG, de Marzi MC, Verdú EF, Sousa C, Bai JC. Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet. World J Gastroenterol 2024; 30:1545-1555. [PMID: 38617446 PMCID: PMC11008412 DOI: 10.3748/wjg.v30.i11.1545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 12/31/2023] [Accepted: 02/18/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND The gluten-free diet (GFD) has limitations, and there is intense research in the development of adjuvant therapies. AIM To examine the effects of orally administered Aspergillus niger prolyl endopeptidase protease (AN-PEP) on inadvertent gluten exposure and symptom prevention in adult celiac disease (CeD) patients following their usual GFD. METHODS This was an exploratory, double-blind, randomized, placebo-controlled trial that enrolled CeD patients on a long-term GFD. After a 4-wk run-in period, patients were randomized to 4 wk of two AN-PEP capsules (GliadinX; AVI Research, LLC, United States) at each of three meals per day or placebo. Outcome endpoints were: (1) Average weekly stool gluten immunogenic peptides (GIP) between the run-in and end of treatments and between AN-PEP and placebo; (2) celiac symptom index (CSI); (3) CeD-specific serology; and (4) quality of life. Stool samples were collected for GIP testing by ELISA every Tuesday and Friday during run-ins and treatments. RESULTS Forty patients were randomized for the intention-to-treat analysis, and three were excluded from the per-protocol assessment. Overall, 628/640 (98.1%) stool samples were collected. GIP was undetectable (< 0.08 μg/g) in 65.6% of samples, and no differences between treatment arms were detected. Only 0.5% of samples had GIP concentrations sufficiently high (> 0.32 μg/g) to potentially cause mucosal damage. Median GIP concentration in the AN-PEP arm was 44.7% lower than in the run-in period. One-third of patients exhibiting GIP > 0.08 μg/g during run-in had lower or undetectable GIP after AN-PEP treatment. Compared with the run- in period, the proportion of symptomatic patients (CSI > 38) in the AN-PEP arm was significantly lower (P < 0.03). AN-PEP did not result in changes in specific serologies. CONCLUSION This exploratory study conducted in a real-life setting revealed high adherence to the GFD. The AN-PEP treatment did not significantly reduce the overall GIP stool concentration. However, given the observation of a significantly lower prevalence of patients with severe symptoms in the AN-PEP arm, further clinical research is warranted.
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Affiliation(s)
- Juan Pablo Stefanolo
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Verónica Segura
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Martina Grizzuti
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Abel Heredia
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Isabel Comino
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Ana Florencia Costa
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Roberto Puebla
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - María Paz Temprano
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Sonia Isabel Niveloni
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Gabriel de Diego
- Basic and Applied Research Group in Immunology and Bioactives (GIBAIB), Institute of Ecology and Sustainable Development (INEDES), National University of Lujan, Luján 6700, Buenos Aires, Argentina
| | - María E Oregui
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
| | - Edgardo Gustavo Smecuol
- Small Bowel Section, Department of Medicine, Gastroenterology Hospital of Buenos Aires “Dr. C. Bonorino Udaondo”, Buenos Aires 1264, Argentina
| | - Mauricio C de Marzi
- Basic and Applied Research Group in Immunology and Bioactives (GIBAIB), Institute of Ecology and Sustainable Development (INEDES), National University of Lujan, Luján 6700, Buenos Aires, Argentina
| | - Elena F Verdú
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton L8S 4L8, Ontario, Canada
| | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville 41080, Spain
| | - Julio César Bai
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
- Facultad de Medicina, Universidad del Salvador, Buenos Aires C1051ABB, Argentina
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Elli L, Leffler D, Cellier C, Lebwohl B, Ciacci C, Schumann M, Lundin KEA, Chetcuti Zammit S, Sidhu R, Roncoroni L, Bai JC, Lee AR, Dennis M, Robert ME, Rostami K, Khater S, Comino I, Cebolla A, Branchi F, Verdu EF, Stefanolo JP, Wolf R, Bergman-Golden S, Trott N, Scudeller L, Zingone F, Scaramella L, Sanders DS. Guidelines for best practices in monitoring established coeliac disease in adult patients. Nat Rev Gastroenterol Hepatol 2024; 21:198-215. [PMID: 38110546 DOI: 10.1038/s41575-023-00872-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/09/2023] [Indexed: 12/20/2023]
Abstract
Coeliac disease (CeD) is an immunological disease triggered by the consumption of gluten contained in food in individuals with a genetic predisposition. Diagnosis is based on the presence of small bowel mucosal atrophy and circulating autoantibodies (anti-type 2 transglutaminase antibodies). After diagnosis, patients follow a strict, life-long gluten-free diet. Although the criteria for diagnosis of this disease are well defined, the monitoring phase has been studied less and there is a lack of specific guidelines for this phase. To develop a set of clinical guidelines for CeD monitoring, we followed the Grading of Recommendations Assessment, Development and Evaluation methodology. Statements and recommendations with the level of evidence were developed and approved by the working group, which comprised gastroenterologists, pathologists, dieticians and biostatisticians. The proposed guidelines, endorsed by the North American and European coeliac disease scientific societies, make recommendations for best practices in monitoring patients with CeD based on the available evidence. The evidence level is low for many topics, suggesting that further research in specific aspects of CeD would be valuable. In conclusion, the present guidelines support clinicians in improving CeD treatment and follow-up and highlight novel issues that should be considered in future studies.
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Affiliation(s)
- Luca Elli
- Center for Prevention and Diagnosis of Celiac Disease-Gastroenterology and Endoscopy Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Daniel Leffler
- Celiac Center, Beth Israel Deaconess Medical Center (BIDMC), Harvard Medical School, Boston, MA, USA
| | - Christophe Cellier
- Department of Gastroenterology and Endoscopy, CELAC network, AP-HP Centre, Hôpital Européen Georges Pompidou, Université de Paris, Cité and Institut National du Cancer, Paris, France
| | - Benjamin Lebwohl
- Celiac Disease Center, Department of Medicine, Columbia University Irving Medical Center, Columbia University, New York, NY, USA
| | - Carolina Ciacci
- Center for Celiac Disease, Gastrointestinal Unit, AOU San Giovanni di Dio e Ruggi D'Aragona and Department of Medicine Surgery Dentistry, Scuola Medica Salernitana, University of Salerno, Salerno, Italy
| | - Michael Schumann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Knut E A Lundin
- K.G. Jebsen Coeliac Disease Research Centre, University of Oslo, Oslo, Norway
- Department of Gastroenterology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | | | - Reena Sidhu
- Department of Infection, Immunity and Cardiovascular Diseases, Royal Hallamshire Hospital, University of Sheffield, Sheffield, UK
| | - Leda Roncoroni
- Center for Prevention and Diagnosis of Celiac Disease-Gastroenterology and Endoscopy Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Julio C Bai
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Anne R Lee
- Celiac Disease Center, Department of Medicine, Columbia University Irving Medical Center, Columbia University, New York, NY, USA
| | - Melinda Dennis
- Celiac Center, Beth Israel Deaconess Medical Center (BIDMC), Harvard Medical School, Boston, MA, USA
| | - Marie E Robert
- Department of Pathology and Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Kamran Rostami
- Department of Gastroenterology, Palmerston North District Health Board (DHB), Palmerston North, New Zealand
| | - Sherine Khater
- Department of Gastroenterology and Endoscopy, CELAC network, AP-HP Centre, Hôpital Européen Georges Pompidou, Université de Paris, Cité and Institut National du Cancer, Paris, France
| | - Isabel Comino
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | | | - Federica Branchi
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Elena F Verdu
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Juan Pablo Stefanolo
- Department of Medicine, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Randi Wolf
- Program in Nutrition, Department of Health Studies & Applied Educational Psychology, Teachers College, Columbia University, New York, NY, USA
| | - Sheba Bergman-Golden
- Program in Nutrition, Department of Health Studies & Applied Educational Psychology, Teachers College, Columbia University, New York, NY, USA
| | - Nick Trott
- Department of Infection, Immunity and Cardiovascular Diseases, Royal Hallamshire Hospital, University of Sheffield, Sheffield, UK
| | - Luigia Scudeller
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Fabiana Zingone
- Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
- Gastroenterology Unit, Azienda Ospedale-Università Padova, Padua, Italy
| | - Lucia Scaramella
- Center for Prevention and Diagnosis of Celiac Disease-Gastroenterology and Endoscopy Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - David S Sanders
- Department of Infection, Immunity and Cardiovascular Diseases, Royal Hallamshire Hospital, University of Sheffield, Sheffield, UK
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Russell AK, Lucas EC, Henneken LM, Pizzey CJ, Clarke D, Myleus A, Tye-Din JA. Stool Gluten Peptide Detection Is Superior to Urinary Analysis, Coeliac Serology, Dietary Adherence Scores and Symptoms in the Detection of Intermittent Gluten Exposure in Coeliac Disease: A Randomised, Placebo-Controlled, Low-Dose Gluten Challenge Study. Nutrients 2024; 16:279. [PMID: 38257173 PMCID: PMC10818827 DOI: 10.3390/nu16020279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Monitoring adherence to a gluten-free diet is an important goal of coeliac disease management. Urine and stool gluten immunogenic peptide (GIP) assays provide an objective readout of gluten ingestion, with the former favoured due to its convenience and acceptability. This study assessed stool GIP excretion after low-dose gluten challenge designed to mimic accidental gluten exposure. A total of 52 coeliac participants undertook a randomised, double-blind gluten (50-1000 mg) or placebo challenge. Stool and urinary GIP, serology, dietary adherence and symptoms were assessed. Stool GIP was 100% sensitive for gluten intake ≥250 mg and 71% for 50 mg. Peak GIP detection was 12-36 h after gluten exposure. The mean stool GIP after 1000 mg gluten ingestion remained above the limit of quantification for 5 days. Urine GIP assessment had poor sensitivity for GIP excretion compared to stool. Serology, dietary adherence score and symptoms did not correlate with gluten excretion during lead-in. We conclude that stool GIP detection is highly sensitive, with levels related to gluten dose and time from ingestion. Weekly or bi-weekly testing will detect low-level exposure more effectively than urine GIP assessments or traditional methods. In this seronegative, apparently well-treated cohort, a high frequency of baseline-positive GIP suggests ongoing gluten exposure, but the assessment of patient behaviour and assay specificity is needed.
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Affiliation(s)
- Amy K. Russell
- Immunology Division, The Walter and Eliza Hall Institute, Parkville, VIC 3052, Australia; (A.K.R.)
| | - Erin C. Lucas
- Immunology Division, The Walter and Eliza Hall Institute, Parkville, VIC 3052, Australia; (A.K.R.)
| | - Lee M. Henneken
- Department of Gastroenterology, The Royal Melbourne Hospital, Parkville, VIC 3052, Australia
| | - Catherine J. Pizzey
- Department of Gastroenterology, The Royal Melbourne Hospital, Parkville, VIC 3052, Australia
| | - Dean Clarke
- National Measurement Institute, Port Melbourne, VIC 3207, Australia
| | - Anna Myleus
- Department of Public Health and Clinical Medicine, Family Medicine, Umea University, 901 87 Umea, Sweden
| | - Jason A. Tye-Din
- Immunology Division, The Walter and Eliza Hall Institute, Parkville, VIC 3052, Australia; (A.K.R.)
- Department of Gastroenterology, The Royal Melbourne Hospital, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia
- The Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
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Stefanolo JP, Temprano MDLP, Smecuol E, Puebla R, Portillo JD, Niveloni S, Verdú EF, Bai JC. Comparison of weekly gluten immunogenic peptide measurement and conventional tools to assess adherence to the gluten-free diet in celiac disease: An observational prospective study. Am J Clin Nutr 2023; 118:1106-1112. [PMID: 37806557 DOI: 10.1016/j.ajcnut.2023.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 09/18/2023] [Accepted: 10/02/2023] [Indexed: 10/10/2023] Open
Abstract
BACKGROUND Adherence to the gluten-free diet (GFD) is critical to achieving symptom control and mucosal healing in celiac disease (CeD), but its assessment is difficult. OBJECTIVES We sought to compare stool gluten immunogenic peptides (GIPs) measurements over a 4-wk period with conventional tools commonly used to monitor compliance with a GFD. METHODS Consecutive adult patients with CeD attending the Small Bowel Section of the Buenos Aires Gastroenterology Hospital were invited to this observational study and were instructed to collect stool samples on Fridays for 4 consecutive weeks. Weekly mean stool GIP concentration was measured was estimated. GIP results were compared with a self-assessment scale of adherence, specific CeD serology, the celiac symptom index, and the assessment by an expert dietitian. RESULTS Fifty-three CeD patients were enrolled and those with stool GIP ≥0.65 μg/g/wk (n = 13; 24.5%) had higher serum concentrations of IgA deamidated gliadin peptides (DGPs) antibodies [69 (29-109) compared with 14 (13-29); P = 0.0005] and IgA tissue transglutaminase [42 (14-200) compared with 10 (7-16); P = 0.02], higher proportion of cases with IgA DGP antibodies >20 AU/mL (84.6% compared with 33.3%; P = 0.002), and a higher self-estimated adherence score [5 (4-9) compared with 9 (7-10); P = 0.003]. GIP did not correlate with celiac symptom index scores (55.6% compared with 30.8%; P = 0.9). Expert dietitian assessment identified 69% [odds ratio (OR): 5.25; 95% CI: 1.1-27.2; P = 0.01] of nonadherent cases when high stool GIP. Logistic regression analysis determined that IgA DGP (adjusted OR: 1.1; 95% CI: 1.01-1.11; P = 0.02) and males (adjusted OR: 28.3; 95% CI: 1.1-722.6; P = 0.04) were independently associated with excessive gluten exposure. CONCLUSIONS Weekly stool GIP identifies gluten exposure that is not always detected by commonly used GFD adherence assessment methods. The higher the concentration of stool GIP, the better the predictive value of serology and dietitian interviews. Stool GIP is a useful and practical test for GFD monitoring, particularly for risky gluten exposure in real-life scenarios.
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Affiliation(s)
- Juan P Stefanolo
- Small Bowel Section, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | | | - Edgardo Smecuol
- Small Bowel Section, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Roberto Puebla
- Small Bowel Section, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | | | - Sonia Niveloni
- Small Bowel Section, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina
| | - Elena F Verdú
- Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Julio C Bai
- Small Bowel Section, Dr. C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina; Research Institutes, Universidad del Salvador, Buenos Aires, Argentina.
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9
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Studerus D, Schumann M. [What is established in the management of celiac disease?]. INNERE MEDIZIN (HEIDELBERG, GERMANY) 2023; 64:1162-1170. [PMID: 37962594 DOI: 10.1007/s00108-023-01621-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/20/2023] [Indexed: 11/15/2023]
Abstract
Nowadays, celiac disease is well-established in internal medicine as an autoimmune disease induced by gluten as a trigger. Undoubtedly similarly well-established is the gluten-free diet. It is the only recognized therapy for celiac disease to date. However, this presents some pitfalls in its implementation, which will be discussed in the following review. In addition, current developments that have the potential to significantly change both diagnosis and treatment of celiac disease are discussed. On the one hand, such an outlook was chosen since colleagues want to be "ready" when such developments are integrated into daily clinical routine. On the other hand, the realization that the field of mucosal immunology is moving forward has the potential to lift the spirits of the reader.
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Affiliation(s)
- Diana Studerus
- Zöliakie Zentrum Schweiz & GastroZentrum Hirslanden, Zürich, Schweiz
| | - Michael Schumann
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Hindenburgdamm 30, 12200, Berlin, Deutschland.
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10
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Uscanga LF. Adherence to a gluten-free diet: Can just a little bit be harmful? REVISTA DE GASTROENTEROLOGIA DE MEXICO (ENGLISH) 2023; 88:305-306. [PMID: 37095014 DOI: 10.1016/j.rgmxen.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 04/26/2023]
Affiliation(s)
- L F Uscanga
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
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11
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Guz-Mark A, Perets TT, Biran N, Jack Y, Zevit N, Silbermintz A, Matar M, Nachmias-Friedler V, Waisbourd-Zinman O, Bar-Lev MR, Huta Y, Ashorov O, Gingold-Belfer R, Shamir R. Gluten Immunogenic Peptides Are Not Correlated With Reported Adherence to Gluten-Free Diet in Children With Celiac Disease. J Pediatr Gastroenterol Nutr 2023; 77:244-248. [PMID: 37204826 DOI: 10.1097/mpg.0000000000003835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
OBJECTIVE There is no gold standard to assess adherence to gluten-free diet (GFD) among patients with celiac disease (CeD). Gluten immunogenic peptides (GIPs) in urine and stool were suggested as novel markers for evaluating adherence to GFD. Our aim was to assess the presence of GIP in pediatric patients with CeD, and to compare the results with alternative methods for evaluating GFD adherence. METHODS Pediatric patients diagnosed with CeD, who were on GFD for at least 1 year, were enrolled and followed prospectively between November 2018 and January 2021. Study visits included clinical assessment, a dietitian interview, Biagi score, food questionnaires, anthropometric and laboratory measurements, and urine and stool samples obtained for laboratory GIP analysis. RESULTS The study included 74 patients (63.5% females), with median (interquartile range, IQR) age of 9.9 (7.8-11.7) years, and median (IQR) duration on GFD of 2.5 (2-5.5) years. Good GFD adherence, assessed by Biagi score, was reported in 93.1% of cases. GIP was evaluated during 134 visits, with GIP detected in 27 of 134 (20.1%) of the visits (16.3% of stool samples and 5.3% of urine samples). Positive GIP results were significantly more common in males compared to females (30.6% vs 14.1%, respectively, P < 0.05). Detection of positive GIP was not associated with dietary assessment of GFD adherence, celiac serology results, or reported symptoms. CONCLUSIONS Stool and urine GIP can be detected in children with CeD, even when dietary assessment indicate good adherence to GFD. The role of GIP testing in clinical practice should be further explored.
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Affiliation(s)
- Anat Guz-Mark
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tsachi Tsadok Perets
- the Gastroenterology Laboratory - Rabin Medical Center, Petach Tikva, Israel
- the Department of Digital Medical Technologies, Holon Institute of Technology, Holon, Israel
| | - Neta Biran
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Nutrition and Dietetics Department, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Yifat Jack
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Nutrition and Dietetics Department, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Noam Zevit
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ari Silbermintz
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Manar Matar
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Vered Nachmias-Friedler
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Orith Waisbourd-Zinman
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michal Rozenfeld Bar-Lev
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yair Huta
- the Gastroenterology Laboratory - Rabin Medical Center, Petach Tikva, Israel
| | - Olga Ashorov
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- the Gastroenterology Laboratory - Rabin Medical Center, Petach Tikva, Israel
| | - Rachel Gingold-Belfer
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- the Nutrition and Dietetics Department, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Raanan Shamir
- From Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
- the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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12
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Monachesi C, Catassi G, Catassi C. The use of urine peptidomics to define dietary gluten peptides from patients with celiac disease and the clinical relevance. Expert Rev Proteomics 2023; 20:281-290. [PMID: 37855116 DOI: 10.1080/14789450.2023.2270775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023]
Abstract
INTRODUCTION Determination of urinary gluten immunogenic peptides (GIP) has emerged as one of the most attractive test to monitor the adherence to the gluten-free diet (GFD) of patients with celiac disease (CD), being a simple, noninvasive and direct method to detect gluten contamination of the GFD. AREAS COVERED We conducted a scoping review in Medline (PubMed) of articles published up to April 2023 that analyzed any aspect of the clinical relevance of the use of urinary GIP measurement in patients with CD. A total of 17 articles reporting the clinical use of urinary peptidomics for the follow-up of CD patients were finally included. EXPERT OPINION Available data suggest that a negative urinary GIP result is a reliable noninvasive predictor of intestinal mucosa healing in CD patients treated with the GFD, especially if testing three urine samples on different days including the weekend. Due to conflicting results about the sensitivity and the specificity of the urinary GIP determination, additional in-depth information is needed, particularly related to (1) the relationship between the amount of ingested gluten and the quantity of urinary GIP excreted in treated CD patients, (2) the GIP kinetics and best timing for sample collection.
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Affiliation(s)
- Chiara Monachesi
- Division of Pediatrics and Center for Celiac Research, DISCO Department, Marche Polytechnic University, Ancona, Italy
| | - Giulia Catassi
- Pediatric Gastroenterology and Liver Unit, Department of Maternal and Child Health, Sapienza-University of Rome, Rome, Italy
| | - Carlo Catassi
- Division of Pediatrics and Center for Celiac Research, DISCO Department, Marche Polytechnic University, Ancona, Italy
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13
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Tye-Din JA. Editorial: coeliac disease follow-up guided by gluten immunogenic peptides-are we there yet? Aliment Pharmacol Ther 2023; 57:1339-1340. [PMID: 37161631 DOI: 10.1111/apt.17464] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Affiliation(s)
- Jason A Tye-Din
- Immunology Division, The Walter and Eliza Hall Institute, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Department of Gastroenterology, The Royal Melbourne Hospital, Parkville, Victoria, Australia
- Centre for Food & Allergy Research, Murdoch Children's Research Institute, Parkville, Victoria, Australia
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14
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Shiha MG, Chetcuti Zammit S, Elli L, Sanders DS, Sidhu R. Updates in the diagnosis and management of coeliac disease. Best Pract Res Clin Gastroenterol 2023; 64-65:101843. [PMID: 37652646 DOI: 10.1016/j.bpg.2023.101843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/02/2023] [Indexed: 09/02/2023]
Abstract
Coeliac disease is a common autoimmune disorder induced by ingesting gluten, the protein component of wheat, barley, and rye. It is estimated that one-in-hundred people worldwide have coeliac disease, of whom the majority remain undiagnosed. Coeliac disease is characterized by a wide range of gastrointestinal and extraintestinal symptoms but can also present asymptomatically. Diagnosing coeliac disease depends on the concordance of clinical, serological and histopathological data. However, the diagnosis can be challenging and frequently overlooked. Undiagnosed coeliac disease is associated with an increased risk of complications and detrimental effects on quality of life. Early diagnosis and treatment of coeliac disease are necessary to reduce the risk of long-term complications.
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Affiliation(s)
- Mohamed G Shiha
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals, Sheffield, United Kingdom; Department of Infection, Immunity & Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.
| | | | - Luca Elli
- Center for Prevention and Diagnosis of Celiac Disease, Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - David S Sanders
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals, Sheffield, United Kingdom; Department of Infection, Immunity & Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Reena Sidhu
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals, Sheffield, United Kingdom; Department of Infection, Immunity & Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
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15
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Martín-Masot R, Jiménez-Muñoz M, Herrador-López M, Flor-Alemany M, Navas-López VM, Nestares T. The Importance of an Early Evaluation after Establishing a Gluten-Free Diet in Children with Celiac Disease. Nutrients 2023; 15:nu15071761. [PMID: 37049601 PMCID: PMC10097184 DOI: 10.3390/nu15071761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/22/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023] Open
Abstract
A gluten-free diet (GFD) is the only treatment available for celiac disease (CD); hence, it is important to ensure correct adherence to the diet and adequate monitoring of the diet. The present study aims to assess the importance of an early follow-up of celiac patients after diagnosis of the disease, identify the role of stool gluten immunogenic peptides (GIPs) in the assessment of GFD adherence, and analyze possible nutritional imbalances or deficiencies in the GFD. This is a cross-sectional study carried out in pediatric patients with newly diagnosed CD in a tertiary hospital in Spain. Of the 61 patients included, 14% had positive stool GIPS at 4 months after CD diagnosis, Among them, 88% had negative stool GIPS at 9 months after diagnosis, following dietary advice. We found nutritional deficiencies in the GFD, such as vitamin D (with only 27% of patients with adequate intakes), folate, calcium, magnesium, and fiber. Similarly, we found imbalances: excess protein and fat intakes and a high percentage of total daily energy intake came from ultra-processed foods (UPF). These findings emphasize the importance of early follow-up of children after diagnosis of CD. It is also crucial to identify patients with poor GFD compliance based on stool GIPS and analyze GFD nutritional imbalances and deficits. Our findings may contribute to the development of specific strategies for the early follow-up of patients with CD, including appropriate nutritional counselling.
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Affiliation(s)
- Rafael Martín-Masot
- Pediatric Gastroenterology and Nutrition Unit, Hospital Regional Universitario de Malaga, 29010 Málaga, Spain
- Institute of Nutrition and Food Technology “José MataixVerdú” (INYTA), Biomedical Research Centre (CIBM), University of Granada, 18071 Granada, Spain
| | - María Jiménez-Muñoz
- Pediatric Gastroenterology and Nutrition Unit, Hospital Regional Universitario de Malaga, 29010 Málaga, Spain
| | - Marta Herrador-López
- Pediatric Gastroenterology and Nutrition Unit, Hospital Regional Universitario de Malaga, 29010 Málaga, Spain
| | - Marta Flor-Alemany
- Institute of Nutrition and Food Technology “José MataixVerdú” (INYTA), Biomedical Research Centre (CIBM), University of Granada, 18071 Granada, Spain
- Department of Physiology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Víctor Manuel Navas-López
- Pediatric Gastroenterology and Nutrition Unit, Hospital Regional Universitario de Malaga, 29010 Málaga, Spain
| | - Teresa Nestares
- Institute of Nutrition and Food Technology “José MataixVerdú” (INYTA), Biomedical Research Centre (CIBM), University of Granada, 18071 Granada, Spain
- Department of Physiology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
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16
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Segura V, Ruiz-Carnicer Á, Mendía I, Garzón-Benavides M, Pizarro ÁE, Comino I, Sousa C. Evaluation of the Usefulness of an Automatable Immunoassay for Monitoring Celiac Disease by Quantification of Immunogenic Gluten Peptides in Urine. Nutrients 2023; 15:nu15071730. [PMID: 37049570 PMCID: PMC10096925 DOI: 10.3390/nu15071730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
A gluten-free diet (GFD) is currently the only treatment available for patients with celiac disease (CD). However, adherence to a GFD can be challenging because gluten is present in many foods. A lifelong follow-up of patients with CD must be performed to promote adherence to a GFD and to identify the appearance of symptoms and the associated diseases. Therefore, the development of tools to analyze gluten exposure in these patients is important. This study proposes the development of the first automatable ELISA to monitor adherence to a GFD through the quantification of urine gluten immunogenic peptides (u-GIP). Seven healthy volunteers without suspicion of CD and 23 patients with CD were monitored as part of this study to optimize, validate, and apply this assay. Non-interference was found in the urine matrix, and the recovery percentage for spiked samples was 81–101%. The u-GIP was stable for up to 16 days when the samples were stored at different temperatures. Overall, 100% of the patients had detectable u-GIP at diagnosis (range of 0.39–2.14 ng GIP/mL), which reduced to 27% after 12 months on a GFD. Therefore, this highly sensitive immunoassay would allow the analysis of u-GIP from a large battery of samples in clinical laboratories of specialized healthcare centers.
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Affiliation(s)
- Verónica Segura
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
| | - Ángela Ruiz-Carnicer
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
| | | | - Marta Garzón-Benavides
- Digestive Disease Clinical Unit, CIBERehd, Institute of Biomedicine of Seville (IBiS), SeLiver Group, Virgen del Rocío Hospital/CSIC/US, 41013 Seville, Spain
| | - Ángeles E. Pizarro
- Digestive Disease Clinical Unit, CIBERehd, Institute of Biomedicine of Seville (IBiS), SeLiver Group, Virgen del Rocío Hospital/CSIC/US, 41013 Seville, Spain
| | - Isabel Comino
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
| | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain
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17
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Galipeau HJ, Verdu EF. Reset after RESET: insights from a negative trial in coeliac disease. Lancet Gastroenterol Hepatol 2023; 8:395-396. [PMID: 36898392 DOI: 10.1016/s2468-1253(23)00007-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 03/09/2023]
Affiliation(s)
- Heather J Galipeau
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8N 3Z5, Canada
| | - Elena F Verdu
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8N 3Z5, Canada.
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18
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Evaluation of a Single Determination of Gluten Immunogenic Peptides in Urine from Unaware Celiac Patients to Monitor Gluten-Free Diet Adherence. Nutrients 2023; 15:nu15051259. [PMID: 36904257 PMCID: PMC10004805 DOI: 10.3390/nu15051259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/23/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
INTRODUCTION AND AIM Usually, adherence to the gluten-free diet (GFD) in celiac patients is indirectly assessed through serological analysis, questionnaires, or invasive methods such as intestinal biopsy. The detection of gluten immunogenic peptides in urine (urinary gluten immunogenic peptides-uGIP) is a novel technique that directly evaluates the ingestion of gluten. The aim of this study was to evaluate the clinical efficacy of uGIP in the follow-up of celiac disease (CD). METHODS From April 2019 to February 2020, CD patients reporting complete adherence to the GFD were prospectively enrolled but were unaware of the reason for the tests. Urinary GIP, the celiac dietary adherence test (CDAT), symptomatic visual analog scales (VAS), and tissue transglutaminase antibodies (tTGA) titres were evaluated. Duodenal histology and capsule endoscopy (CE) were performed when indicated. RESULTS A total of 280 patients were enrolled. Thirty-two (11.4%) had a positive uGIP test (uGIP+). uGIP+ patients did not show significant differences in demographic parameters, CDAT, or VAS scores. The tTGA+ titre was not related to the positivity of uGIP (14.4% vs. 10.9% in patients with tTGA+ and tTGA-). Regarding histology, 66.7% of the GIP+ patients had atrophy compared to 32.7% of the GIP patients (p-value 0.01). However, the presence of atrophy did not correlate with tTGA. Mucosal atrophy was detected in 29 (47.5%) out of 61 patients by CE. With this method, no noticeable dependence on uGIP results (24 GIP- vs. 5 GIP+) was observed. CONCLUSIONS The single uGIP test was positive in 11% of CD cases referring a correct GFD adherence. Furthermore, uGIP results significantly correlated with the duodenal biopsy, formerly considered the gold standard for assessing CD activity.
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Bakulin IG, Avalueva EB, Semenova EA, Оrеshkо LS, Serkova MY, Sitkin SI. Prospects for the treatment of gluten-associated diseases: on our daily bread, celiac disease, gluten proteins and more…. ALMANAC OF CLINICAL MEDICINE 2023; 50:367-376. [DOI: 10.18786/2072-0505-2022-50-053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Food safety all over the world is largely dependent on production of grains that are cultivated in 60% of agricultural lands. Wheat is the main food for millions of people and one of the three most commonly cultivated grain cultures worldwide, along with corn and rice. Modern wheat is a product of gene engineering interventions aimed at increased productivity, yields, nutrient quota, and storage time, as well as immunogenic properties. However, the consumption of gluten, a proline and glutamine-rich wheat, rye and barley protein, triggers gluten-dependent disorders, such as celiac disease, wheat allergy, baker's asthma and wheat-dependent exercise-induced anaphylaxis. This group of disorders are curable provided the correct diagnosis has been made and strict lifelong gluten-free diet is implemented. Continuous patient's adherence to the gluten-free diet is associated with a number of medical and paramedical challenges, and the adherence level of the most compliant patients does not exceed 80%. The paper discuss other treatment strategies to improve the nutrition of people with gluten-sensitive disorders, in particular, the reduction grain gluten content, gluten sequestration in the gut before its digestion, prevention of gluten absorption and subsequent immune cell activation, and administration of tissue transglutaminase 2 inhibitors.
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High Prevalence of Functional Gastrointestinal Disorders in Celiac Patients with Persistent Symptoms on a Gluten-Free Diet: A 20-Year Follow-Up Study. Dig Dis Sci 2022:10.1007/s10620-022-07727-x. [PMID: 36401140 PMCID: PMC10352160 DOI: 10.1007/s10620-022-07727-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/20/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Ongoing symptoms in treated celiac disease (CD) are frequent and are commonly thought of as being due to infractions to a gluten-free diet (GFD) or complications. AIMS To study the etiology and natural history of clinically relevant events (CREs) throughout follow-up and identify predictors thereof to guide follow-up. METHODS CREs (symptoms/signs requiring diagnostic/therapeutic interventions) occurring in celiac patients between January-2000 and May-2021 were retrospectively collected between June and September 2021 and analysed. RESULTS One-hundred-and-eighty-nine adult patients (133 F, age at diagnosis 36 ± 13 years, median follow-up 103 months, IQR 54-156) were enrolled. CREs were very common (88/189, 47%), but hardly due to poor GFD adherence (4%) or complications (2%). Interestingly, leading etiologies were functional gastrointestinal disorders (30%), reflux disease (18%) and micronutrient deficiencies (10%). Age at diagnosis ≥ 45 years (HR 1.68, 95%CI 1.05-2.69, p = 0.03) and classical pattern of CD (HR 1.63, 95%CI 1.04-2.54, p = 0.03) were predictors of CREs on a multivariable Cox model. At 5 years, 46% of classical patients ≥ 45 years old at diagnosis were event-free, while this was 62% for non-classical/silent ≥ 45 years, 60% for classical < 45 years, and 80% for non-classical/silent < 45 years. CONCLUSIONS CREs occurred in almost half of CD patients during follow-up, with functional disorders being very common. New follow-up strategies for adult CD may be developed based on age and clinical pattern at diagnosis.
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21
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Green PHR, Paski S, Ko CW, Rubio-Tapia A. AGA Clinical Practice Update on Management of Refractory Celiac Disease: Expert Review. Gastroenterology 2022; 163:1461-1469. [PMID: 36137844 DOI: 10.1053/j.gastro.2022.07.086] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 12/02/2022]
Abstract
DESCRIPTION The purpose of this expert review is to summarize the diagnosis and management of refractory celiac disease. It will review evaluation of patients with celiac disease who have persistent or recurrent symptoms, differential diagnosis, nutritional support, potential therapeutic options, and surveillance for complications of this condition. METHODS This expert review was commissioned and approved by the American Gastroenterological Association (AGA) Institute Clinical Practice Updates Committee (CPUC) and the AGA Governing Board to provide timely guidance on a topic of high clinical importance to the AGA membership and underwent internal peer review by the CPUC and external peer review through standard procedures of Gastroenterology. These Best Practice Advice (BPA) statements were drawn from a review of the published literature and from expert opinion. Since systematic reviews were not performed, these BPA statements do not carry formal ratings of the quality of evidence or strength of the presented considerations. Best Practice Advice Statements BEST PRACTICE ADVICE 1: In patients believed to have celiac disease who have persistent or recurrent symptoms or signs, the initial diagnosis of celiac disease should be confirmed by review of prior diagnostic testing, including serologies, endoscopies, and histologic findings. BEST PRACTICE ADVICE 2: In patients with confirmed celiac disease with persistent or recurrent symptoms or signs (nonresponsive celiac disease), ongoing gluten ingestion should be excluded as a cause of these symptoms with serologic testing, dietitian review, and detection of immunogenic peptides in stool or urine. Esophagogastroduodenoscopy with small bowel biopsies should be performed to look for villous atrophy. If villous atrophy persists or the initial diagnosis of celiac disease was not confirmed, consider other causes of villous atrophy, including common variable immunodeficiency, autoimmune enteropathy, tropical sprue, and medication-induced enteropathy. BEST PRACTICE ADVICE 3: For patients with nonresponsive celiac disease, after exclusion of gluten ingestion, perform a systematic evaluation for other potential causes of symptoms, including functional bowel disorders, microscopic colitis, pancreatic insufficiency, inflammatory bowel disease, lactose or fructose intolerance, and small intestinal bacterial overgrowth. BEST PRACTICE ADVICE 4: Use flow cytometry, immunohistochemistry, and T-cell receptor rearrangement studies to distinguish between subtypes of refractory celiac disease and to exclude enteropathy-associated T-cell lymphoma. Type 1 refractory celiac disease is characterized by a normal intraepithelial lymphocyte population and type 2 is defined by the presence of an aberrant, clonal intraepithelial lymphocyte population. Consultation with an expert hematopathologist is necessary to interpret these studies. BEST PRACTICE ADVICE 5: Perform small bowel imaging with capsule endoscopy and computed tomography or magnetic resonance enterography to exclude enteropathy-associated T-cell lymphoma and ulcerative jejunoileitis at initial diagnosis of type 2 refractory celiac disease. BEST PRACTICE ADVICE 6: Complete a detailed nutritional assessment with investigation of micronutrient and macronutrient deficiencies in patients diagnosed with refractory celiac disease. Check albumin as an independent prognostic factor. BEST PRACTICE ADVICE 7: Correct deficiencies in macro- and micronutrients using oral supplements and/or enteral support. Consider parenteral nutrition for patients with severe malnutrition due to malabsorption. BEST PRACTICE ADVICE 8: Corticosteroids, most commonly open-capsule budesonide or, if unavailable, prednisone, are the medication of choice and should be used as first-line therapy in either type 1 or type 2 refractory celiac disease. BEST PRACTICE ADVICE 9: Patients with refractory celiac disease require regular follow-up by a multidisciplinary team, including gastroenterologists and dietitians, to assess clinical and histologic response to therapy. Identify local experts with expertise in celiac disease to assist with management. BEST PRACTICE ADVICE 10: Patients with refractory celiac disease without response to steroids may benefit from referral to a center with expertise for management or evaluation for inclusion in clinical trials.
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Affiliation(s)
| | - Shirley Paski
- Cedars-Sinai Medical Center, Los Angeles, California
| | - Cynthia W Ko
- Department of Medicine, University of Washington, Seattle, Washington.
| | - Alberto Rubio-Tapia
- Celiac Disease Program, Division of Gastroenterology, Hepatology, and Nutrition, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio
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22
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ESPGHAN Position Paper on Management and Follow-up of Children and Adolescents With Celiac Disease. J Pediatr Gastroenterol Nutr 2022; 75:369-386. [PMID: 35758521 DOI: 10.1097/mpg.0000000000003540] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To gather the current evidence and to offer recommendations for follow-up and management. METHODS The Special Interest Group on Celiac Diseases of the European Society of Paediatric Gastroenterology Hepatology and Nutrition formulated ten questions considered to be essential for follow-up care. A literature search (January 2010-March 2020) was performed in PubMed or Medline. Relevant publications were identified and potentially eligible studies were assessed. Statements and recommendations were developed and discussed by all coauthors. Recommendations were voted upon: joint agreement was set as at least 85%. RESULTS Publications (n = 2775) were identified and 164 were included. Using evidence or expert opinion, 37 recommendations were formulated on: The need to perform follow-up, its frequency and what should be assessed, how to assess adherence to the gluten-free diet, when to expect catch-up growth, how to treat anemia, how to approach persistent high serum levels of antibodies against tissue-transglutaminase, the indication to perform biopsies, assessment of quality of life, management of children with unclear diagnosis for which a gluten-challenge is indicated, children with associated type 1 diabetes or IgA deficiency, cases of potential celiac disease, which professionals should perform follow-up, how to improve the communication to patients and their parents/caregivers and transition from pediatric to adult health care. CONCLUSIONS We offer recommendations to improve follow-up of children and adolescents with celiac disease and highlight gaps that should be investigated to further improve management.
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Penny HA, Rej A, Baggus EMR, Coleman SH, Ward R, Wild G, Bouma G, Trott N, Snowden JA, Wright J, Cross SS, Hadjivassiliou M, Sanders DS. Non-Responsive and Refractory Coeliac Disease: Experience from the NHS England National Centre. Nutrients 2022; 14:nu14132776. [PMID: 35807956 PMCID: PMC9268848 DOI: 10.3390/nu14132776] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 02/04/2023] Open
Abstract
We characterised the aetiology of non-responsive coeliac disease (NRCD) and provided contemporary mortality data in refractory coeliac disease (RCD) from our centre. We also measured urine gluten immunogenic peptides (GIPs) in patients with established RCD1 to evaluate gluten exposure in these individuals. Methods: This was a longitudinal cohort study conducted in Sheffield, UK. Between 1998 and 2019, we evaluated 285 adult (≥16 years) patients with NRCD or RCD. Patients with established RCD1 and persisting mucosal inflammation and/or ongoing symptoms provided three urine samples for GIP analysis. Results: The most common cause of NRCD across the cohort was gluten exposure (72/285; 25.3%). RCD accounted for 65/285 patients (22.8%), 54/65 patients (83.1%) had RCD1 and 11/65 patients (16.9%) had RCD2. The estimated 5-year survival was 90% for RCD1 and 58% for RCD2 (p = 0.016). A total of 36/54 (66.7%) patients with RCD1 underwent urinary GIP testing and 17/36 (47.2%) had at least one positive urinary GIP test. Conclusion: The contemporary mortality data in RCD2 remains poor; patients with suspected RCD2 should be referred to a recognised national centre for consideration of novel therapies. The high frequency of urinary GIP positivity suggests that gluten exposure may be common in RCD1; further studies with matched controls are warranted to assess this further.
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Affiliation(s)
- Hugo A. Penny
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
- Correspondence: (H.A.P.); (D.S.S.); Tel.: +44-0114-271-1900 (H.A.P. & D.S.S.)
| | - Anupam Rej
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Elisabeth M. R. Baggus
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Sarah. H. Coleman
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Rosalie Ward
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Graeme Wild
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Gerd Bouma
- Department of Gastroenterology, Vrije Universiteit Medical Center, 1117 Amsterdam, The Netherlands;
| | - Nick Trott
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - John A. Snowden
- Department of Haematology, Royal Hallamshire Hospital, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield S10 2JF, UK; (J.A.S.); (J.W.)
| | - Josh Wright
- Department of Haematology, Royal Hallamshire Hospital, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield S10 2JF, UK; (J.A.S.); (J.W.)
| | - Simon S. Cross
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
| | - Marios Hadjivassiliou
- Department of Neurology, Royal Hallamshire Hospital, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield S10 2JF, UK;
| | - David S. Sanders
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield S10 2JF, UK; (A.R.); (E.M.R.B.); (S.H.C.); (R.W.); (G.W.); (N.T.); (S.S.C.)
- Correspondence: (H.A.P.); (D.S.S.); Tel.: +44-0114-271-1900 (H.A.P. & D.S.S.)
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Tye‐Din JA. Review article: Follow-up of coeliac disease. Aliment Pharmacol Ther 2022; 56 Suppl 1:S49-S63. [PMID: 35815829 PMCID: PMC9542881 DOI: 10.1111/apt.16847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 12/09/2022]
Abstract
Coeliac disease is a lifelong immune-mediated enteropathy with systemic features associated with increased morbidity and modestly increased mortality. Treatment with a strict gluten-free diet improves symptoms and mucosal damage but is not curative and low-level gluten intake is common despite strict attempts at adherence. Regular follow-up after diagnosis is considered best-practice however this is executed poorly in the community with the problem compounded by the paucity of data informing optimal approaches. The aim of dietary treatment is to resolve symptoms, reduce complication risk and improve quality of life. It follows that the goals of monitoring are to assess dietary adherence, monitor disease activity, assess symptoms and screen for complications. Mucosal disease remission is regarded a key measure of treatment success as healing is associated with positive health outcomes. However, persistent villous atrophy is common, even after many years of a gluten-free diet. As the clinical significance of asymptomatic enteropathy is uncertain the role for routine follow-up biopsies remains contentious. Symptomatic non-responsive coeliac disease is common and with systematic follow-up a cause is usually found. Effective models of care involving the gastroenterologist, dietitian and primary care doctor will improve the consistency of long-term management and likely translate into better patient outcomes. Identifying suitable treatment targets linked to long-term health is an important goal.
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Affiliation(s)
- J. A. Tye‐Din
- Immunology DivisionThe Walter and Eliza Hall InstituteParkvilleVictoriaAustralia,Department of Medical BiologyUniversity of MelbourneParkvilleVictoriaAustralia,Department of GastroenterologyThe Royal Melbourne HospitalParkvilleVictoriaAustralia,Centre for Food & Allergy ResearchMurdoch Children’s Research InstituteParkvilleVictoriaAustralia
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Utilization and Effectiveness of eHealth Technology in the Follow-up of Celiac Disease: A Systematic Review. J Pediatr Gastroenterol Nutr 2022; 74:812-818. [PMID: 35849504 DOI: 10.1097/mpg.0000000000003423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES To systematically review the literature on the utilization and effectiveness of electronic-health technologies (eHealth), such as smartphone applications, in managing patients with celiac disease (CD). METHODS PubMed, Scopus, and the Cochrane Library were all searched (until February 2021). Inclusion criteria were full-text English articles reporting original data on the use of eHealth technologies in the follow-up of CD patients, with no age restriction. Exclusion criteria were studies only using non-interactive websites and phone consultation as the primary eHealth method. The results were summarized narratively. RESULTS Using identified keywords, 926 unique studies were identified. After title and abstract screening by two independent reviewers, 26 studies were reviewed in full text. Finally, eight studies were included in this systematic review, and their quality appraised using standardized forms. Of the eight studies, six were randomized-controlled trials, one mixed-methods study, and one cross-sectional, observational study. Studies were assessed to be of "low" to "moderate" methodological quality. Studied eHealth technologies included web-based interventions, smartphone applications, text messaging, and online consultations. The most consistently reported effects related to improved quality of life (number of studies = 4), knowledge on CD (n = 3), and dietary adherence (n = 2); notably, only one study reported reduced costs of eHealth vs. standard (in-office) care. CONCLUSIONS Although eHealth has the potential to improve the management of CD, so far, the research in the field is scarce and generally of low-moderate methodological quality. Hence, the effectiveness of eHealth in CD management remains uncertain, and more high-quality evidence is required before its utility is known.
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Paolini A, Sarshar M, Felli C, Bruno SP, Rostami-Nejad M, Ferretti F, Masotti A, Baldassarre A. Biomarkers to Monitor Adherence to Gluten-Free Diet by Celiac Disease Patients: Gluten Immunogenic Peptides and Urinary miRNAs. Foods 2022; 11:1380. [PMID: 35626950 PMCID: PMC9140451 DOI: 10.3390/foods11101380] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/02/2022] [Accepted: 05/07/2022] [Indexed: 02/01/2023] Open
Abstract
Celiac disease (CD) is a multifactorial autoimmune enteropathy with a prevalence greater than 1% in the pediatric population. The only therapy for CD patients is a strict gluten-free diet (GFD). Gluten-free food contamination by other cereals during packaging and cooking or accidental ingestion of gluten may cause several intestinal and extraintestinal symptoms in CD patients. Therefore, the monitoring of gluten contamination in food and assessing the level of ingested gluten by analytical biomarkers has been of great interest in recent years. To this aim, small gluten immunogenic peptides (GIPs) obtained by the hydrolysis of gluten and present in urine and feces have been studied as biomarkers of gluten intake and to monitor adherence to GFD by CD patients. More recently, the use of circulating, fecal and urinary miRNAs has emerged as a novel diagnostic tool that can be potentially applied to assess adherence to GFD. Moreover, the presence of GIPs and miRNAs in both feces and urine suggests a similar excretion modality and the possibility of using urinary miRNAs, similarly to GIPs, as potential biomarkers of GFD in CD patients.
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Affiliation(s)
- Alessandro Paolini
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
| | - Meysam Sarshar
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
| | - Cristina Felli
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
| | - Stefania Paola Bruno
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
- Department of Science, University Roma Tre, 00146 Rome, Italy
| | - Mohammad Rostami-Nejad
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran 1985717411, Iran;
| | - Francesca Ferretti
- Hepato-Gastroenterology and Nutrition Department, Bambino Gesù Children’s Hospital-IRCCS, 00165 Rome, Italy;
| | - Andrea Masotti
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
| | - Antonella Baldassarre
- Research Laboratories, Bambino Gesù Children’s Hospital-IRCCS, 00146 Rome, Italy; (A.P.); (M.S.); (C.F.); (S.P.B.); (A.B.)
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The global burden of coeliac disease: opportunities and challenges. Nat Rev Gastroenterol Hepatol 2022; 19:313-327. [PMID: 34980921 DOI: 10.1038/s41575-021-00552-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/08/2021] [Indexed: 02/06/2023]
Abstract
Coeliac disease is a systemic disorder characterized by immune-mediated enteropathy, which is caused by gluten ingestion in genetically susceptible individuals. The clinical presentation of coeliac disease is highly variable and ranges from malabsorption through solely extra-intestinal manifestations to asymptomatic. As a result, the majority of patients with coeliac disease remain undiagnosed, misdiagnosed or experience a substantial delay in diagnosis. Coeliac disease is diagnosed by a combination of serological findings of disease-related antibodies and histological evidence of villous abnormalities in duodenal biopsy samples. However, variability in histological grading and in the diagnostic performance of some commercially available serological tests remains unacceptably high and confirmatory assays are not readily available in many parts of the world. Currently, the only effective treatment for coeliac disease is a lifelong, strict, gluten-free diet. However, many barriers impede patients' adherence to this diet, including lack of widespread availability, high cost, cross-contamination and its overall restrictive nature. Routine follow-up is necessary to ensure adherence to a gluten-free diet but considerable variation is evident in follow-up protocols and the optimal disease management strategy is not clear. However, these challenges in the diagnosis and management of coeliac disease suggest opportunities for future research.
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Meijer CR, Bakker J, Boers A, Jansen S, Mengi Z, Mearin ML. Association in Clinical Practice Between Gluten Intake and Gluten Immunogenic Peptides in Celiac Children. GASTRO HEP ADVANCES 2022; 1:652-658. [PMID: 39132079 PMCID: PMC11307387 DOI: 10.1016/j.gastha.2022.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 04/22/2022] [Indexed: 08/13/2024]
Abstract
Background and Aims The dietary compliance and its assessment in celiac disease (CD) patients on a strict gluten-free diet (GFD) remain a challenge. Two relatively new, validated methods have been proposed to detect occasional gluten ingestion: standardized dietary questionnaire and determination of urinary gluten immunogenic peptides (GIPs). Our aim was to prospectively assess dietary compliance via these methods and compare their results with those of tissue transglutaminase antibodies (tTGA). Methods This was a prospective single-center study. Consecutive CD patients (aged 1-18 years) on a GFD scheduled for regular consultation between March and August 2019 were invited. In addition to standard care, a completed dietary questionnaire and urine sample for GIP were collected. Pearson's chi-square test, Fisher's exact test, and Mann-Whitney U test were performed. Results Of the 156 eligible children, 110 provided informed consent. Completed dietary questionnaire, GIP, and tTGA results were available from 86 children (median age 12.8 years, median GFD duration 30 months, 65% female). Adherence to the GFD evaluated by GIP, dietary questionnaire, and anti-tTGA was 94.2%, 75.6% and 94.2%, respectively. No association was found between the tTGA results and the detection of GIP, as well as between the tTGA results and the dietary questionnaires scores (P = .5 and .312, respectively). The participants perceived both the questionnaire and the measurement of GIP as reassuring with regard to correct implementation of the GFD. Conclusion All the 3 methods have limitations to monitor dietary compliance. The comparison of their performance shows that the best single method is the use of the validated dietary questionnaire, which should therefore be implemented in the regular care for children with CD. The most effective combination of dietary questionnaire and urinary GIP determination should be used in specific clinical situations.
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Affiliation(s)
- Caroline R. Meijer
- Department of Pediatric Gastroenterology, Leiden University Medical Center, Willem Alexander Children's Hospital, Leiden, The Netherlands
| | - Jaap Bakker
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Anneloes Boers
- Department of Pediatric Gastroenterology, Leiden University Medical Center, Willem Alexander Children's Hospital, Leiden, The Netherlands
| | - Sophie Jansen
- Department of Pediatric Gastroenterology, Leiden University Medical Center, Willem Alexander Children's Hospital, Leiden, The Netherlands
| | - Zeliha Mengi
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Maria Luisa Mearin
- Department of Pediatric Gastroenterology, Leiden University Medical Center, Willem Alexander Children's Hospital, Leiden, The Netherlands
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Coto L, Sousa C, Cebolla A. Individual variability in patterns and dynamics of fecal gluten immunogenic peptides excretion after low gluten intake. Eur J Nutr 2022; 61:2033-2049. [PMID: 34993643 PMCID: PMC8739026 DOI: 10.1007/s00394-021-02765-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/30/2021] [Indexed: 12/20/2022]
Abstract
Purpose Determination of Gluten Immunogenic Peptides (GIP) in feces is a direct tool for gluten exposure detection. The sensitivity of GIP detection methods for cases of unintentional low gluten intakes is unknown. We studied the interindividual variability in the kinetic of excretion under homogeneously controlled dietary conditions, and the sensitivity of fecal GIP tests after low amounts of punctual gluten ingestions. Methods Participants (n = 20) followed the same gluten-free menu for 12 days in which two separated doses of gluten (50 mg and 2 g) were ingested and all the depositions were collected. GIP from stool samples were analyzed by ELISA and lateral flow immunoassay (LFIA) tests. Results Most participants had detectable GIP after 50 mg and 2 g gluten ingestions using ELISA test (72.2% and 95%, respectively), whereas the LFIA test showed less sensitivity (22.2% and 80%, respectively). GIP were detected at higher either frequency or concentration in the range of 12–36 h after 50 mg intake, and 12–84 h after 2 g consumption. Considering this period, diagnostic sensitivity of GIP detection after a single 50 mg ingestion may be significatively increased analyzing three stool samples per individual. High variability among participants was found in the time and amount of GIP excretion; however, some individuals showed common patterns for both gluten intakes. Conclusion Sporadic gluten exposure detection may require several fecal samples to achieve level of sensitivity above 90%. Interindividual variability in the dynamic of GIP excretion may suggest patterns of gluten metabolism.
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Affiliation(s)
- Laura Coto
- Biomedal S.L., Polígono Industrial Parque Plata, Calle Calzada Romana, 40, 41900, Camas, Sevilla, Spain
- Human Nutrition and Food Science Doctoral Program, University of Granada, 18011, Granada, Spain
| | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012, Seville, Spain
| | - Angel Cebolla
- Biomedal S.L., Polígono Industrial Parque Plata, Calle Calzada Romana, 40, 41900, Camas, Sevilla, Spain.
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Olivares M, Flor-Duro A, Sanz Y. Manipulation of the gut microbiome in gluten-intolerance. Curr Opin Clin Nutr Metab Care 2021; 24:536-542. [PMID: 34622826 DOI: 10.1097/mco.0000000000000791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Gluten is a complex mixture of highly immunogenic glutamine- and proline-rich proteins found in some cereals. In celiac disease (CeD), gluten triggers an autoimmune response due to its interaction with the human leukocyte antigen heterodimers that confer the genetic risk. The involvement of gluten in other disorders has also been investigated, but its role beyond CeD is still unclear. Here, we review the most recent evidence of the involvement of gluten in diseases and the opportunities of manipulating the gut microbiota to treat or prevent gluten-related conditions. RECENT FINDINGS Most of the new studies have been conducted in the context of CeD, where important evidence has been gained on associations between the gut microbiota, genotype, and environmental factors such as breastfeeding and antibiotics. The role of the microbiota has been investigated in several prospective, observational and interventional studies with probiotics, which together showed that the gut microbiota could be targeted to ameliorate and aid in the prevention of CeD development. SUMMARY Several studies have evidenced how genetic and environmental factors influence the gut microbiome with consequences in CeD. These findings could inspire the development of microbiota modulation strategies to support the prevention or treatment of CeD.
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Affiliation(s)
- Marta Olivares
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain
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Coto L, Mendia I, Sousa C, Bai JC, Cebolla A. Determination of gluten immunogenic peptides for the management of the treatment adherence of celiac disease: A systematic review. World J Gastroenterol 2021; 27:6306-6321. [PMID: 34712034 PMCID: PMC8515793 DOI: 10.3748/wjg.v27.i37.6306] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/28/2021] [Accepted: 09/02/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gluten is a complex mixture of proteins with immunogenic peptide sequences triggering the autoimmune activity in patients with celiac disease (CeD). Gluten immunogenic peptides (GIP) are resistant to gastrointestinal digestion and are then excreted via the stool and urine. Most common detection methods applied in the follow-up visits for CeD patients such as serology tests, dietetic interviews, questionnaires, and duodenal biopsy have been proved to be inefficient, invasive, or inaccurate for evaluating gluten-free diet (GFD) compliance. Determination of excreted GIP in stool and urine has been developed as a non-invasive, direct, and specific test for GFD monitoring.
AIM To summarize published literature about the clinical utility of GIP determination in comparison to the tools employed for GFD monitoring.
METHODS PubMed and Web of Science searches were performed using the keywords “gluten immunogenic peptides” or “gluten immunogenic peptide” and a combination of the previous terms with “feces”, “stools”, “urine”, “celiac disease”, “gluten-free diet”, and “adherence” to identify relevant clinical studies published in English and Spanish between 2012 to January 2021. Reference lists from the articles were reviewed to identify additional pertinent articles. Published articles and abstracts reporting the clinical use of GIP determination in stool and/or urine for the follow-up of patients with CeD in comparison with other tools in use were included. Case reports, commentaries, reviews, conference papers, letters, and publications that did not focus on the aims of this review were excluded.
RESULTS Total of 15 publications were found that involved the use of GIP determination in stool and/or urine to monitor the adherence to the GFD in comparison to other tools. Studies included both children and adults diagnosed with CeD and healthy volunteers. Overall, these preliminary studies indicated that this novel technique was highly sensitive for the detection of GFD transgressions and therefore could facilitate the follow-up of patients with CeD. Tools identified in this work included the CeD-specific serology, dietetic questionnaires, symptomatology, and the duodenal biopsy. Review of the literature revealed that the rates of GFD adherence may vary between 30%-93% using either stool or urine GIP determination, 49%-96% by the serology, 59%-94% using the dietetic questionnaires, 56%-95% by the reported symptoms and 44%-76% with the duodenal biopsy. In addition, the association between the different methods and histological abnormalities (Marsh II-III) was found to be 33%-100% for GIP determination (stool and urine), 25%-39% for CeD-specific serology, 3%-50% for dietetic questionnaires, and 22%-28% for the symptomatology.
CONCLUSION Excreted GIP detection is the precise approach for determining voluntary or involuntary gluten consumption in CeD patients preventing future complications arising from gluten exposure.
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Affiliation(s)
- Laura Coto
- Research and Development, Biomedal, Camas 41900, Seville, Spain
- Human Nutrition and Food Science Doctoral Program, University of Granada, Granada 18011, Spain
| | - Irati Mendia
- Research and Development, Biomedal, Camas 41900, Seville, Spain
- Molecular Biology, Biomedicine and Clinical Research Doctoral Program, University of Seville, Seville 41012, Spain
| | - Carolina Sousa
- Department of Microbiology and Parasitology, University of Seville, Seville 41013, Spain
| | - Julio César Bai
- Department of Gastroenterology, Dr. Carlos Bonorino Udaondo Gastroenterology Hospital, Buenos Aires 1264, Argentina
- Research Institutes, Universidad del Salvador, Buenos Aires 1050, Argentina
| | - Angel Cebolla
- Research and Development, Biomedal, Camas 41900, Seville, Spain
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Monachesi C, Verma AK, Catassi GN, Franceschini E, Gatti S, Gesuita R, Lionetti E, Catassi C. Determination of Urinary Gluten Immunogenic Peptides to Assess Adherence to the Gluten-Free Diet: A Randomized, Double-Blind, Controlled Study. Clin Transl Gastroenterol 2021; 12:e00411. [PMID: 34613954 PMCID: PMC8500619 DOI: 10.14309/ctg.0000000000000411] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 08/22/2021] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION The adherence to a gluten-free diet (GFD) is a trending topic in the management of celiac disease. The aim of our study was to evaluate the diagnostic performance of urinary gluten immunogenic peptides (GIP) determination to detect gluten contamination of the GFD. METHODS In study A, 25 healthy adults on a standard GFD performed 6 gluten challenges (0, 10, 50, 100, 500, and 1,000 mg) with quantification of urinary GIP before (T0) and during the following 24 hours. In study B, 12 participants on a gluten contamination elimination diet underwent urinary GIP determination at T0 and after challenge with 5 or 10 mg gluten. Urine GIP concentration was determined by an immunochromatographic assay. RESULTS In study A, 51 of 150 baseline urine samples were GIP+ on GFD and 7 of 17 were GIP+ after the zero-gluten challenge, whereas only 55 of 81 were GIP+ after the 10-1,000 mg gluten challenges. There was no significant change in the 24-hour urinary GIP when increasing gluten from 10 to 1,000 mg. In study B, 24 of 24 baseline urine samples were GIP-, whereas 8 of 24 were GIP+ after 5 or 10 mg of gluten. DISCUSSION Traces of gluten in the standard GFD may cause positivity of urinary GIP determination, whereas a false negativity is common after a gluten intake of 10-1,000 mg. Owing to the impossibility of standardizing the test in normal conditions, it seems unlikely that urinary GIP determination may represent a reliable tool to assess the compliance to the GFD of patients with celiac disease or other gluten-related disorders.
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Affiliation(s)
- Chiara Monachesi
- Celiac Disease Research Laboratory, Polytechnic University of Marche, Ancona, Italy
| | - Anil K. Verma
- Celiac Disease Research Laboratory, Polytechnic University of Marche, Ancona, Italy
| | - Giulia N. Catassi
- Division of Pediatrics, DISCO Department, Polytechnic University of Marche, Ancona, Italy
| | - Elisa Franceschini
- Division of Pediatrics, DISCO Department, Polytechnic University of Marche, Ancona, Italy
| | - Simona Gatti
- Division of Pediatrics, DISCO Department, Polytechnic University of Marche, Ancona, Italy
| | - Rosaria Gesuita
- Center of Epidemiology and Biostatistics, Polytechnic University of Marche, Ancona, Italy
| | - Elena Lionetti
- Division of Pediatrics, DISCO Department, Polytechnic University of Marche, Ancona, Italy
| | - Carlo Catassi
- Division of Pediatrics, DISCO Department, Polytechnic University of Marche, Ancona, Italy
- Mucosal Immunology and Biology Research Center, Division of Pediatric Gastroenterology and Nutrition, Massachusetts General Hospital, Boston, USA
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Weber M, Wolf N, Branchi F, Tangermann P, Itzlinger A, Poralla L, Preiß JC, Grunert P, Daum S, Siegmund B, Stallmach A, Schumann M. Results from the German registry for refractory celiac disease. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2021; 59:944-953. [PMID: 34507373 DOI: 10.1055/a-1540-7476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Refractory celiac disease (RCD) refers to a rare subgroup of patients with celiac disease who show clinical signs of malabsorption despite a gluten-free diet. RCD is divided into an autoimmune phenotype (RCD type I) and pre-lymphoma (RCD type II). To reflect the clinical reality in managing this disease in Germany, a national register was established based on a questionnaire developed specifically for this purpose. Between 2014 and 2020, a total of 53 patients were registered. The diagnosis of RCD was confirmed in 46 cases (87%). This included 27 patients (59%) with RCD type I and 19 patients (41%) with RCD type II. A wide range of diagnostic and therapeutic measures was used. Therapeutically, budesonide was used in 59% of the RCD patients regardless of the subtype. Nutritional therapy was used in only 5 patients (11%). Overall mortality was 26% (12 patients) with a clear dominance in patients with RCD type II (9 patients, 47%). In summary, RCD needs to become a focus of national guidelines to increase awareness, establish standards, and thus enable the treating physician to make the correct diagnosis in a timely manner. Moreover, we concluded that when treating such patients, contacting a specialized center is recommended to ensure sufficient management.
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Affiliation(s)
- Marko Weber
- Klinik für Innere Medizin IV (Gastroenterologie, Hepatologie, Infektiologie, Interdisziplinäre Endoskopie), Universitätsklinikum Jena, Berlin, Germany
| | - Nina Wolf
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Federica Branchi
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Paul Tangermann
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Alice Itzlinger
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Lukas Poralla
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Jan C Preiß
- Klinik für Innere Medizin - Gastroenterologie, Diabetologie und Hepatologie, Klinikum Neukölln, Berlin, Germany
| | - Philip Grunert
- Klinik für Innere Medizin IV (Gastroenterologie, Hepatologie, Infektiologie, Interdisziplinäre Endoskopie), Universitätsklinikum Jena, Berlin, Germany
| | - Severin Daum
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Britta Siegmund
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Andreas Stallmach
- Klinik für Innere Medizin IV (Gastroenterologie, Hepatologie, Infektiologie, Interdisziplinäre Endoskopie), Universitätsklinikum Jena, Berlin, Germany
| | - Michael Schumann
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
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Coto L, Sousa C, Cebolla A. Dynamics and Considerations in the Determination of the Excretion of Gluten Immunogenic Peptides in Urine: Individual Variability at Low Gluten Intake. Nutrients 2021; 13:2624. [PMID: 34444783 PMCID: PMC8398346 DOI: 10.3390/nu13082624] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/20/2021] [Accepted: 07/26/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND A lifelong strict gluten-free diet is the only available treatment for celiac disease, but total exclusion of gluten is difficult to achieve. The aim of this study was to determine the range of time and the amount of gluten immunogenic peptides (GIP) excreted in urine after specific gluten ingestions. METHODS 20 healthy participants followed the same diet for 12 days in which 50 mg and 2 g of gluten were ingested and all the urinations were collected. GIP were analyzed by lateral flow immunoassay (LFIA) tests and quantified using an LFIA reader. RESULTS GIP were detected in 15% and 95% of participants after 50 mg and 2 g gluten intakes, respectively. The higher frequency and concentration of GIP was found between 6 and 9 h after both gluten ingestions. The ranges of detection were 3-12 h (50 mg) and 0-15 h (2 g). CONCLUSIONS An increase in the frequency of urine tests may be a suitable approach to avoid false negative results. The use of the LFIA test in three urine samples collected at different times may show a sensitivity of 19.6% for a gluten ingestion like 50 mg, increasing to 93% after 2 g consumption.
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Affiliation(s)
- Laura Coto
- Biomedal S.L., 41900 Seville, Spain;
- Human Nutrition and Food Science Doctoral Program, University of Granada, 18011 Granada, Spain
| | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain;
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Wieser H, Ruiz-Carnicer Á, Segura V, Comino I, Sousa C. Challenges of Monitoring the Gluten-Free Diet Adherence in the Management and Follow-Up of Patients with Celiac Disease. Nutrients 2021; 13:2274. [PMID: 34209138 PMCID: PMC8308436 DOI: 10.3390/nu13072274] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 12/14/2022] Open
Abstract
Celiac disease (CD) is a chronic gluten-responsive immune mediated enteropathy and is treated with a gluten-free diet (GFD). However, a strict diet for life is not easy due to the ubiquitous nature of gluten. This review aims at examining available evidence on the degree of adherence to a GFD, the methods to assess it, and the barriers to its implementation. The methods for monitoring the adherence to a GFD are comprised of a dietary questionnaire, celiac serology, or clinical symptoms; however, none of these methods generate either a direct or an accurate measure of dietary adherence. A promising advancement is the development of tests that measure gluten immunogenic peptides in stools and urine. Causes of adherence/non-adherence to a GFD are numerous and multifactorial. Inadvertent dietary non-adherence is more frequent than intentional non-adherence. Cross-contamination of gluten-free products with gluten is a major cause of inadvertent non-adherence, while the limited availability, high costs, and poor quality of certified gluten-free products are responsible for intentionally breaking a GFD. Therefore, several studies in the last decade have indicated that many patients with CD who follow a GFD still have difficulty controlling their diet and, therefore, regularly consume enough gluten to trigger symptoms and damage the small intestine.
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Affiliation(s)
| | | | | | | | - Carolina Sousa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain; (Á.R.-C.); (V.S.); (I.C.)
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Segura V, Ruiz-Carnicer Á, Sousa C, Moreno MDL. New Insights into Non-Dietary Treatment in Celiac Disease: Emerging Therapeutic Options. Nutrients 2021; 13:2146. [PMID: 34201435 PMCID: PMC8308370 DOI: 10.3390/nu13072146] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 02/07/2023] Open
Abstract
To date, the only treatment for celiac disease (CD) consists of a strict lifelong gluten-free diet (GFD), which has numerous limitations in patients with CD. For this reason, dietary transgressions are frequent, implying intestinal damage and possible long-term complications. There is an unquestionable need for non-dietary alternatives to avoid damage by involuntary contamination or voluntary dietary transgressions. In recent years, different therapies and treatments for CD have been developed and studied based on the degradation of gluten in the intestinal lumen, regulation of the immune response, modulation of intestinal permeability, and induction of immunological tolerance. In this review, therapeutic lines for CD are evaluated with special emphasis on phase III and II clinical trials, some of which have promising results.
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Affiliation(s)
| | | | | | - María de Lourdes Moreno
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (V.S.); (Á.R.-C.); (C.S.)
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The utility of faecal and urine biomarkers for small bowel diseases. Curr Opin Gastroenterol 2021; 37:284-294. [PMID: 33769381 DOI: 10.1097/mog.0000000000000730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
PURPOSE OF REVIEW Small bowel diseases pose a unique diagnostic and management challenge and often requires tertiary specialist referral. The use of biomarkers may provide a cheap, noninvasive tool to assess the small bowel in terms of diagnosis, offering a better way to triage referrals and select patients for early management. This review looks at the most recent evidence behind the use of several faecal and urine biomarkers for small bowel diseases. RECENT FINDINGS Faecal calprotectin shows the most promise, with evidence to support its role in predicting relapse postsurgery and monitoring treatment response in patients with Crohn's disease. A faecal calprotectin less than 50 μg/g may also be used as a cut-off to triage further investigation. Faecal lactoferrin also appears promising as a marker of small bowel inflammation. A positive faecal immunohistochemistry test precapsule may help to prioritize referrals for obscure bleeding. SUMMARY The use of biomarkers in the diagnosis and management of small bowel disease is still controversial and remains unclear. More studies are required to further develop their potential and before societal guidelines can be developed to direct their appropriate use in clinical practice.
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Persisting Villous Atrophy and Adherence in Celiac Disease: What Does the Patient Want? What Should a Clinician Advise? Am J Gastroenterol 2021; 116:946-948. [PMID: 33767095 DOI: 10.14309/ajg.0000000000001244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 02/23/2021] [Indexed: 12/11/2022]
Abstract
Adherence to a gluten-free diet in celiac disease remains challenging. Clinicians may view mucosal healing as crucial. From the patient's perspective, avoidance of an invasive upper endoscopy may be desirable. A fundamental misconception is that noninvasive tools including symptoms, serology, dietary adherence questionnaires, and novel gluten immunogenic peptides may detect ongoing villous atrophy rather than assess adherence. Duodenal biopsies are the only reliable method for assessment of mucosal healing-however, we as clinicians should provide patients with the uncertainties of this approach allowing them to make an informed decision on an individual basis.
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Veeraraghavan G, Therrien A, Degroote M, McKeown A, Mitchell PD, Silvester JA, Leffler DA, Leichtner AM, Kelly CP, Weir DC. Non-responsive celiac disease in children on a gluten free diet. World J Gastroenterol 2021; 27:1311-1320. [PMID: 33833484 PMCID: PMC8015304 DOI: 10.3748/wjg.v27.i13.1311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/04/2021] [Accepted: 02/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Non-responsive celiac disease (NRCD) is defined as the persistence of symptoms in individuals with celiac disease (CeD) despite being on a gluten-free diet (GFD). There is scant literature about NRCD in the pediatric population.
AIM To determine the incidence, clinical characteristics and underlying causes of NRCD in children.
METHODS Retrospective cohort study performed at Boston Children’s Hospital (BCH). Children < 18 years diagnosed with CeD by positive serology and duodenal biopsies compatible with Marsh III histology between 2008 and 2012 were identified in the BCH’s Celiac Disease Program database. Medical records were longitudinally reviewed from the time of diagnosis through September 2015. NRCD was defined as persistent symptoms at 6 mo after the initiation of a GFD and causes of NRCD as well as symptom evolution were detailed. The children without symptoms at 6 mo (responders) were compared with the NRCD group. Additionally, presenting signs and symptoms at the time of diagnosis of CeD among the responders and NRCD patients were collected and compared to identify any potential predictors for NRCD at 6 mo of GFD therapy.
RESULTS Six hundred and sixteen children were included. Ninety-one (15%) met criteria for NRCD. Most were female (77%). Abdominal pain [odds ratio (OR) 1.8 95% confidence interval (CI) 1.1-2.9], constipation (OR 3.1 95%CI 1.9-4.9) and absence of abdominal distension (OR for abdominal distension 0.4 95%CI 0.1-0.98) at diagnosis were associated with NRCD. NRCD was attributed to a wide variety of diagnoses with gluten exposure (30%) and constipation (20%) being the most common causes. Other causes for NRCD included lactose intolerance (9%), gastroesophageal reflux (8%), functional abdominal pain (7%), irritable bowel syndrome (3%), depression/anxiety (3%), eosinophilic esophagitis (2%), food allergy (1%), eating disorder (1%), gastric ulcer with Helicobacter pylori (1%), lymphocytic colitis (1%), aerophagia (1%) and undetermined (13%). 64% of children with NRCD improved on follow-up.
CONCLUSION NRCD after ≥ 6 mo GFD is frequent among children, especially females, and is associated with initial presenting symptoms of constipation and/or abdominal pain. Gluten exposure is the most frequent cause.
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Affiliation(s)
- Gopal Veeraraghavan
- Division of Gastro-enterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
- The Celiac Center, Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
| | - Amelie Therrien
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
- The Celiac Center, Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
| | - Maya Degroote
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
| | - Allison McKeown
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
| | - Paul D Mitchell
- Institutional Centers for Clinical and Translational Research, Boston Children's Hospital, Boston, MA 02115, United States
| | - Jocelyn A Silvester
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
- The Celiac Center, Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
| | - Daniel A Leffler
- The Celiac Center, Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
- Gastrointestinal Therapeutics, Takeda Pharmaceutical International Co, Cambridge, MA 02139, United States
| | - Alan M Leichtner
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
| | - Ciaran P Kelly
- The Celiac Center, Department of Medicine and Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
| | - Dascha C Weir
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA 02115, United States
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, United States
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The Multiomics Analyses of Fecal Matrix and Its Significance to Coeliac Disease Gut Profiling. Int J Mol Sci 2021; 22:ijms22041965. [PMID: 33671197 PMCID: PMC7922330 DOI: 10.3390/ijms22041965] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 12/15/2022] Open
Abstract
Gastrointestinal (GIT) diseases have risen globally in recent years, and early detection of the host’s gut microbiota, typically through fecal material, has become a crucial component for rapid diagnosis of such diseases. Human fecal material is a complex substance composed of undigested macromolecules and particles, and the processing of such matter is a challenge due to the unstable nature of its products and the complexity of the matrix. The identification of these products can be used as an indication for present and future diseases; however, many researchers focus on one variable or marker looking for specific biomarkers of disease. Therefore, the combination of genomics, transcriptomics, proteomics and metabonomics can give a detailed and complete insight into the gut environment. The proper sample collection, sample preparation and accurate analytical methods play a crucial role in generating precise microbial data and hypotheses in gut microbiome research, as well as multivariate data analysis in determining the gut microbiome functionality in regard to diseases. This review summarizes fecal sample protocols involved in profiling coeliac disease.
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Quantification of Accidental Gluten Contamination in the Diet of Children with Treated Celiac Disease. Nutrients 2021; 13:nu13010190. [PMID: 33435453 PMCID: PMC7827942 DOI: 10.3390/nu13010190] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/31/2020] [Accepted: 01/07/2021] [Indexed: 11/16/2022] Open
Abstract
A strict gluten-free diet is extremely difficult to maintain. Protracted ingestion of gluten traces (>10 mg/day) is sufficient to cause significant damage in the architecture of the small intestinal mucosa in patients on treatment for celiac disease. The aim of this study was to directly measure the level of contaminating gluten in the daily diet of celiac children following a gluten-free diet. From April 2019 to December 2019, celiac disease children (2-18 years old) on a gluten-free diet for ≥6 months were offered to participate in this prospective-observational study. Patients and their caregivers were invited to provide a representative portion (about 10 g) of all meals consumed during a 24-h period. Participants were requested to weigh all ingested food and report items in a 24-h food diary. The gluten content was quantified by the R5 sandwich enzyme-linked immunosorbent assay method. Sixty-nine children completed the protocol. Overall, 12/448 (2.7%) food samples contained detectable amounts of gluten; of them, 11 contained 5-20 ppm and 1 >20 ppm. The 12 contaminated food samples belonged to 5/69 enrolled patients. In these 5 children, the daily gluten intake was well below the safety threshold of 10 mg/day. The present findings suggest that in a country characterized by high celiac disease awareness, the daily unintended exposure to gluten of treated celiac children on regular follow-up is very low; reassuringly, the presence of gluten traces did not lead to exceed the tolerable threshold of 10 mg/day of gluten intake in the gluten-free diet.
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Poor Sensitivity of Fecal Gluten Immunogenic Peptides and Serum Antibodies to Detect Duodenal Mucosal Damage in Celiac Disease Monitoring. Nutrients 2020; 13:nu13010098. [PMID: 33396719 PMCID: PMC7824460 DOI: 10.3390/nu13010098] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/17/2020] [Accepted: 12/24/2020] [Indexed: 12/14/2022] Open
Abstract
A lifelong gluten-free diet (GFD) is the only current treatment for celiac disease (CD), but strict compliance is complicated. Duodenal biopsies are the “gold standard” method for diagnosing CD, but they are not generally recommended for disease monitoring. We evaluated the sensitivity and specificity of fecal gluten immunogenic peptides (GIPs) to detect duodenal lesions in CD patients on a GFD and compared them with serum anti-tissue transglutaminase (tTG) IgA antibodies. A prospective study was conducted at two tertiary centers in Spain on a consecutive series of adolescents and adults with CD who maintained a long-lasting GFD. Adherence to a GFD and health-related quality of life were scored with validated questionnaires. Mucosal damage graded according to the Marsh–Oberhüber classification (Marsh 1/2/3) was used as the reference standard. Of the 97 patients included, 27 presented duodenal mucosal damage and 70 had normal biopsies (Marsh 0). The sensitivity (33%) and specificity (81%) of GIPs were similar to those provided by the two assays used to measure anti-tTG antibodies. Scores in questionnaires showed no association with GIP, but an association between GIPs and patients’ self-reported gluten consumption was found (p = 0.003). GIP displayed low sensitivity but acceptable specificity for the detection of mucosal damage in CD.
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Ramírez-Sánchez AD, Tan IL, Gonera-de Jong B, Visschedijk MC, Jonkers I, Withoff S. Molecular Biomarkers for Celiac Disease: Past, Present and Future. Int J Mol Sci 2020; 21:E8528. [PMID: 33198309 PMCID: PMC7697360 DOI: 10.3390/ijms21228528] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 11/10/2020] [Indexed: 12/19/2022] Open
Abstract
Celiac disease (CeD) is a complex immune-mediated disorder that is triggered by dietary gluten in genetically predisposed individuals. CeD is characterized by inflammation and villous atrophy of the small intestine, which can lead to gastrointestinal complaints, malnutrition, and malignancies. Currently, diagnosis of CeD relies on serology (antibodies against transglutaminase and endomysium) and small-intestinal biopsies. Since small-intestinal biopsies require invasive upper-endoscopy, and serology cannot predict CeD in an early stage or be used for monitoring disease after initiation of a gluten-free diet, the search for non-invasive biomarkers is ongoing. Here, we summarize current and up-and-coming non-invasive biomarkers that may be able to predict, diagnose, and monitor the progression of CeD. We further discuss how current and emerging techniques, such as (single-cell) transcriptomics and genomics, can be used to uncover the pathophysiology of CeD and identify non-invasive biomarkers.
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Affiliation(s)
- Aarón D. Ramírez-Sánchez
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands; (A.D.R.-S.); (I.L.T.); (I.J.)
| | - Ineke L. Tan
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands; (A.D.R.-S.); (I.L.T.); (I.J.)
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands;
| | - B.C. Gonera-de Jong
- Department of Pediatrics, Wilhelmina Hospital Assen, 9401 RK Assen, The Netherlands;
| | - Marijn C. Visschedijk
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands;
| | - Iris Jonkers
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands; (A.D.R.-S.); (I.L.T.); (I.J.)
| | - Sebo Withoff
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands; (A.D.R.-S.); (I.L.T.); (I.J.)
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Therrien A, Leffler DA. Gluten immunogenic peptides: is knowing half the battle? Am J Clin Nutr 2020; 112:1147-1148. [PMID: 32844173 DOI: 10.1093/ajcn/nqaa228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Amelie Therrien
- Celiac Center, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Daniel A Leffler
- Celiac Center, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA.,Takeda Pharmaceutical International Co., Cambridge, MA, USA
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Silvester JA, Comino I, Rigaux LN, Segura V, Green KH, Cebolla A, Weiten D, Dominguez R, Leffler DA, Leon F, Bernstein CN, Graff LA, Kelly CP, Sousa C, Duerksen DR. Exposure sources, amounts and time course of gluten ingestion and excretion in patients with coeliac disease on a gluten-free diet. Aliment Pharmacol Ther 2020; 52:1469-1479. [PMID: 32981131 PMCID: PMC7780203 DOI: 10.1111/apt.16075] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/16/2020] [Accepted: 08/16/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND A major deficit in understanding and improving treatment in coeliac disease (CD) is the lack of empiric data on real world gluten exposure. AIMS To estimate gluten exposure on a gluten-free diet (GFD) using immunoassays for gluten immunogenic peptides (GIP) and to examine relationships among GIP detection, symptoms and suspected gluten exposures METHODS: Adults with biopsy-confirmed CD on a GFD for 24 months were recruited from a population-based inception cohort. Participants kept a diary and collected urine samples for 10 days and stools on days 4-10. 'Doggie bags' containing ¼ portions of foods consumed were saved during the first 7 days. Gluten in food, stool and urine was quantified using A1/G12 ELISA. RESULTS Eighteen participants with CD (12 female; age 21-70 years) and three participants on a gluten-containing diet enrolled and completed the study. Twelve out of 18 CD participants had a median 2.1 mg gluten per exposure (range 0.2 to >80 mg). Most exposures were asymptomatic and unsuspected. There was high intra-individual variability in the interval between gluten ingestion and excretion. Participants were generally unable to identify the food. CONCLUSIONS Gluten exposure on a GFD is common, intermittent, and usually silent. Excretion kinetics are highly variable among individuals. The amount of gluten varied widely, but was typically in the milligram range, which was 10-100 times less than consumed by those on an unrestricted diet. These findings suggest that a strict GFD is difficult to attain, and specific exposures are difficult to detect due to variable time course of excretion.
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Affiliation(s)
- Jocelyn A Silvester
- Harvard Medical School Celiac Research Program, Boston, USA
- Boston Children’s Hospital, Boston, USA
- Beth Israel Deaconess Medical Center, Boston, USA
- Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Isabel Comino
- Faculty of Pharmacy, University of Seville, Seville, Spain
| | | | | | | | | | | | | | - Daniel A Leffler
- Harvard Medical School Celiac Research Program, Boston, USA
- Beth Israel Deaconess Medical Center, Boston, USA
| | | | - Charles N Bernstein
- Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Lesley A Graff
- Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Ciaran P Kelly
- Harvard Medical School Celiac Research Program, Boston, USA
- Beth Israel Deaconess Medical Center, Boston, USA
| | - Carolina Sousa
- Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Donald R Duerksen
- Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
- St Boniface Hospital, Winnipeg, Canada
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46
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Porcelli B, Ferretti F, Biviano I, Santini A, Cinci F, Vascotto M, Grande E, Quagliarella F, Terzuoli L, Bizzaro N, Marini M, Rentini S. Testing for fecal gluten immunogenic peptides: a useful tool to evaluate compliance with gluten-free diet by celiacs. Ann Gastroenterol 2020; 33:631-637. [PMID: 33162739 PMCID: PMC7599348 DOI: 10.20524/aog.2020.0530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 06/29/2020] [Indexed: 12/15/2022] Open
Abstract
Background Although experts agree that strict dietary compliance is fundamental for the health of celiac patients, there are no evidence-based recommendations on the best way to assess dietary compliance. Detection of gluten immunogenic peptides (GIPs) in feces was recently proposed as an effective method of assessing the dietary compliance of celiac patients. Methods Fifty-five consecutive celiac patients (27 adults and 28 children, age 6-72 years), who had been on a gluten-free diet for at least 2 years, were enrolled. All patients were evaluated clinically for symptoms, physical parameters and laboratory parameters. Dietary compliance was assessed with the Biagi questionnaire and serum anti-tissue transglutaminase (tTG) IgA antibodies were measured. GIPs were determined by immunoenzymatic assay on an automated Chorus analyzer (DIESSE Diagnostica Senese), after extraction of fecal samples by the method developed by DIESSE. Results Eight patients tested positive for GIPs (GIPs+); 71.4% of GIP-positive patients were asymptomatic; tTG antibodies were detected in 3/8 GIP+ patients. The Biagi score was significantly associated with fecal positivity for GIPs (P=0.02). However, according to the Biagi score, 57.1% of GIP+ patients followed the diet strictly and 5.4% of GIP- subjects did not comply with the diet or made substantial mistakes. Conclusions Assay of fecal GIPs identified more patients who did not comply with the diet than did the Biagi questionnaire, evaluation of symptoms or anti-tTG antibodies. Detection of fecal GIPs offers a direct, objective, quantitative assessment of even occasional exposure to gluten and is confirmed as a practical way to check dietary compliance.
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Affiliation(s)
- Brunetta Porcelli
- Sezione di Biochimica, Dipartimento Biotecnologie Mediche, Università degli Studi di Siena (Brunetta Porcelli, Francesca Cinci, Lucia Terzuoli)
| | - Fabio Ferretti
- Dipartimento Scienze Mediche, Chirurgiche e Neuroscienze, Università degli Studi di Siena (Fabio Ferretti)
| | - Ivano Biviano
- UOC Gastroenterologia ed Endoscopia Operativa, Azienda Ospedaliera Universitaria Senese (Ivano Biviano, Alessia Santini, Mario Marini, Silvia Rentini)
| | - Alessia Santini
- UOC Gastroenterologia ed Endoscopia Operativa, Azienda Ospedaliera Universitaria Senese (Ivano Biviano, Alessia Santini, Mario Marini, Silvia Rentini)
| | - Francesca Cinci
- Sezione di Biochimica, Dipartimento Biotecnologie Mediche, Università degli Studi di Siena (Brunetta Porcelli, Francesca Cinci, Lucia Terzuoli)
| | - Marina Vascotto
- UOC Pediatria, Azienda Ospedaliera Universitaria Senese, Siena (Marina Vascotto, Elisabetta Grande, Francesco Quagliarella)
| | - Elisabetta Grande
- UOC Pediatria, Azienda Ospedaliera Universitaria Senese, Siena (Marina Vascotto, Elisabetta Grande, Francesco Quagliarella)
| | - Francesco Quagliarella
- UOC Pediatria, Azienda Ospedaliera Universitaria Senese, Siena (Marina Vascotto, Elisabetta Grande, Francesco Quagliarella)
| | - Lucia Terzuoli
- Sezione di Biochimica, Dipartimento Biotecnologie Mediche, Università degli Studi di Siena (Brunetta Porcelli, Francesca Cinci, Lucia Terzuoli)
| | - Nicola Bizzaro
- Laboratorio di Patologia Clinica, Ospedale San Antonio, Azienda Sanitaria Universitaria Integrata di Udine, Tolmezzo (Nicola Bizzaro), Italy
| | - Mario Marini
- UOC Gastroenterologia ed Endoscopia Operativa, Azienda Ospedaliera Universitaria Senese (Ivano Biviano, Alessia Santini, Mario Marini, Silvia Rentini)
| | - Silvia Rentini
- UOC Gastroenterologia ed Endoscopia Operativa, Azienda Ospedaliera Universitaria Senese (Ivano Biviano, Alessia Santini, Mario Marini, Silvia Rentini)
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