Active clinical trials for "Celiac Disease"

Swedish celiac disease women living on a gluten-free diet for years report poorer subjective health and more bowel complaints than Swedish women of same age in general population. The investigators hypothesis is that the women participating in an education programme based on problem based learning will show higher degree of perceived health than the women receiving usual care.

The purpose of this study is to determine whether age at introduction of gluten-containing cereals (e.g. wheat) plays a role in influencing the risk of celiac disease (CD) development in infants with a first-degree relative affected by CD.

Undetected or untreated CD may cause severe complications later in life, such as autoimmune disorders. It is recommended for subjects with autoimmune diseases or at risk for CD to be screened for CD and to repeat serological screening about every three years to detect cases of clinically silent, late-onset CD. Celiac disease (CD) auto-antibodies against tissue transglutaminase (anti-tTG) are produced in the intestinal mucosa even when not measurable in serum. By using the phage display libraries technique it is possible to investigate in vivo (intestinal biopsy) early antibody responses in autoimmune disease. In particularly, this technique demonstrated that the humoral response against tissue transglutaminase occurs at the intestinal mucosal level, and that the human VH5 gene is the commonly used variable region by the celiac patients to build the anti-tTG. The intestinal mucosa production of IgA anti-tTG could be important in the diagnostic work-up of early-stage CD, when mucosal histology is not yet diagnostic. The investigators propose to 1) first degree relatives of CD patients, 2) subjects with autoimmune disease, 3) symptomatic subjects (genetically predisposed to gluten intolerance) tested negative for CD related autoantibodies and with apparently normal intestinal mucosa a prospective study to uncover early-stage of gluten intolerance by measuring the mucosal VH5 restricted gene family anti-tTG clones in two biopsies: before and after one year of gluten free-diet (GFD). Aims of this clinical trial are: to measure by means of phage display libraries the gluten dependent humoral immune response (anti-tTG) of the intestinal mucosa in subjects with high risk of untreated CD, without CD-related intestinal lesions. to demonstrate the mucosal gluten-dependent immune response before and after 12 months of gluten-free diet to demonstrate that dietary intervention might modify the clinical condition (e.g improvements of the gastrointestinal complaints or extra-gastrointestinal symptoms) of the enrolled patients and the improvement of the intestinal inflammation with the disappearance of the mucosal anti-tTG. to evaluate the specificity of the double staining technique for detecting IgA antitransglutaminase mucosal deposit with the phage display antibodies assay

FODMAPS (fructose, oligosaccharides, monosaccharides, disaccharides and polyols) are characterised as fermentable but poorly absorbed carbohydrates which enter the colon and are utilised by colonic bacteria. During fasting colonic nutrients are scarce but ingesting FODMAPS causes a rapid increase in carbohydrate which can overwhelm the microbiota's ability to utilise substrate. The excess reducing equivalents will generate hydrogen or methane. The principal symptoms are diarrhoea and abdominal distension. Patients with irritable bowel syndrome appear to benefit by restricting intake, possibly because they are hypersensitive to intestinal distension. The focus of the study is to evaluate if in celiac patients with persistent abdominal symptoms and with a correct gluten free diet, a low FODMAPs diet can improve their symptoms. Moreover the study would like to observe if a dietary restriction in FODMAPs carries the risk of nutritional inadequacy.

To study the correlation between simvastatin metabolism by the enterocyte and the histologic state of the intestine in treated celiac disease.

The goal of this research is to conduct a pilot clinical study to image Celiac disease characteristic mucosal lesions and compare Optical Frequency Domain Imaging (OFDI) images to histologic evaluation in children, adolescents and young adults with suspected Celiac disease.

Celiac is a chronic autoimmune disease that is treated with a gluten-free diet. Adolescents with celiac disease were affected differently by the restrictions during the COVID-19 pandemic. The aim of this study was to determine the compliance with a gluten-free diet during in adolescents with celiac disease during the Covid-19 pandemic and identify the associated factors. The sample of this study consisted of 85 adolescents in the 10-19 age group diagnosed with celiac disease. Research data were collected by online questionnaires (Google Forms) between January and April 2022. Sociodemographic and disease-related data of adolescents who were compliant and those who were non-compliant with a gluten-free diet during the COVID-19 pandemic were compared.

This study evaluates why people with celiac disease and non-celiac gluten/wheat sensitivity develop rapid onset symptoms within hours of gluten exposure. Half of subjects will be given gluten and half will not.

The overall aim of this project is to investigate whether a gluten free diet after the onset of type 1 diabetes (T1D) can better preserve the remaining beta cell mass and at the same time prevent the development of Celiac Disease (CD) in these patients. Specific aims • To study whether gluten free diet during one year after the onset of diabetes influence the appearance and duration of clinical remission in children with Type 1 diabetes. New data show that a gluten free diet is beneficial concerning the insulin production after the onset of diabetes. The investigators want to investigate if gluten is a triggering protein for the destruction of the beta cell function after the onset of diabetes by comparing children who have a normal diet compared to children with a gluten free diet during one year after the onset of the disease. To study whether a gluten free diet during one year after the onset of diabetes prevent the development of Celiac Disease in these children and the impact of having two diseases It is known that it is almost 10 times more common that children with Type 1 Diabetes (IDDM) develop Celiac Disease (CD) than the general population and that most of these children (6-7 %) develop CD after the onset of Diabetes and within 5 years. Based on our new data that CD is preventable to some extent the investigators plan to perform randomized controlled studies if it is possible to prevent or postpone CD by means after the onset of IDDM. To investigate the impact of gluten free diet on the regulation of autoimmune responses The investigators will test the hypothesis that gluten free diet in children with recent onset T1D will implement immune regulation and inhibit the activation of potentially autoreactive T cells.

The aim of this study is to assess the clinical utility of the whole blood transglutaminase-based rapid test against current serological tests and the gold standard of duodenal biopsy. The investigators will recruit patients (n=1000) from the endoscopy department at the Royal Hallamshire Hospital, Sheffield, United Kingdom (UK). The patients recruited for this study will already have been referred for a consultation and gastroscopy. In addition, these patients will already have been serologically tested for IgA TTG, EMA and a total IgA immunoglobulin level (as per normal clinical practice). All duodenal biopsy specimens will be fixed in buffered formalin and embedded in paraffin wax. Standard, 3μm thick sections at three levels will be stained with haematoxylin and eosin and reported routinely. Additionally, biopsies demonstrating increased intraepithelial lymphocytes only (changes compatible with but not diagnostic of coeliac disease) will be stained with KiRAS or CD4/CD8 which are markers for coeliac disease.