View clinical trials related to Food Hypersensitivity.
Filter by:This is an experimental, interventional study, following on from a clinical trial comparing the efficacy and safety of oral immunotherapy with low and high doses of sesame protein, in which patient desensitisation was achieved (High and Low Dose Oral Sesame Immunotherapy - Comparison of Efficacy and Safety, NCT05158413). The aim of this study is to assess a sustained unresponsiveness (SU) to sesame protein after at least 8 months of previously assigned high- or low-dose sesame OIT, followed by 4-week-allergen avoidance, and verified by an open oral food challenge (OOFC).
Preventing food allergic reactions predominantly relies on allergen avoidance and managing this daily causes high anxiety in some patients, while having an allergic reaction can cause a post-traumatic stress disorder-like syndrome in children. The underlying mechanisms of these psychological changes are poorly understood, but one potential mechanism may be post-natal hippocampal neurogenesis (HN). HN is the production of new neurons from stem cells in the hippocampus which is one of the brain centres for memory and mood regulation. HN has been associated with cognitive function and some psychiatric disorders. Importantly, it can be influenced by both internal (bloodstream) and external (exercise, diet, etc.) factors. This study will explore the link between food allergy and children's mental health and cognition, and to determine whether this is linked to changes in HN.
The objectives of the CAJESITO study are (i) to assess the tolerance of oral cashew nut immunotherapy, by describing the frequency and severity of allergic reactions during oral cashew nut immunotherapy and (ii )to assess the risk factors for severe allergic reactions during oral cashew nut immunotherapy (predictive factors, associated factors.
Allergy to nuts (cashew, pistachio, walnut, exotic nuts) is a frequent allergy in children, with a prevalence of up to 4.9% of the population and a low resolution rate (9%). Among the nut allergies, cashew nut allergy is one of the most frequent in Northern Europe: in France 41% of children allergic to nuts are sensitized to cashew nuts. Moreover, cashew nut allergy is associated with severe reactions that can be lethal in both adults and children. These reactions may even be more severe than those observed with peanuts, with more frequent respiratory and cardiovascular impairment. We note reactions for even limited contacts (cutaneous or mucous) and low reactogenic thresholds. However, the only recommendation for management at present is avoidance. The stakes of oral immunotherapy protocols cashew would be similar to those for peanut immunotherapy: to limit reactions in case of accidental intake, increase the reactogenic threshold and thus improve the quality of life of allergic patients. To date, only one study has focused on the efficacy and tolerance of cashew immunotherapy : the prospective NUT CRACKER study conducted on 50 children aged 4 years or older with cashew nut allergy between 2016 and 2019, reports a good efficacy of immunotherapy on increasing threshold for cashew nut but also for pistachio and walnut, when there was a cross-over allergy. While the tolerance was similar to other immunotherapy protocols for the other foods. The objectives of part 2 of the CAJESITO study are (i) to evaluate the tolerance of oral cashew nut immunotherapy, by describing the frequency and severity of allergic reactions during oral cashew immunotherapy and (ii) to identify risk factors for severe risk factors for severe allergic reactions during oral cashew immunotherapy.
Since the prevalence of adverse reactions to foodstuffs (ARFS) has been steadily increasing and has become an alarming health concern, the general objective of this study is to analyze the prevalence of ARFS in Spanish adults of different physical condition.
Irritable bowel syndrome (IBS) affects one in seven people with gastrointestinal (GI) symptoms. IBS strongly impacts quality of life, is a leading cause of work absenteeism, and consumes 0.5% of the healthcare annual budget. It manifests in women more than men with symptoms including abdominal pain, bloating, constipation (IBS-C), diarrhoea (IBS-D), and mixed presentations (IBS-M) (1). The development of therapeutic options is hampered by the poor understanding of the underlying cause of symptoms. Many patients find that certain foods (particularly carbohydrates) trigger their symptoms, and avoiding such foods has been shown effective in IBS, like in the low-FODMAP (fermentable oligo-, di-, mono-saccharides and polyols) exclusion diet. This has suggested that the food-symptom relation may involve malabsorption of carbohydrates due to inefficient digestion. However only a percentage of patients respond to this diet. Recently it has been reported that a subset of IBS carries hypomorphic (defective) gene variant of the sucrase isomaltase (SI), the enzyme that normally digests carbohydrates, sucrose and starch. This carbohydrate maldigestion (the breakdown of complex carbohydrates by a person's small bowel enzymes) is characterized by diarrhoea, abdominal pain and bloating, which are also features of IBS. This possibly occurs via accumulation of undigested carbohydrates in the large bowel, where they cause symptoms due to gas production following bacterial fermentation. Similar mechanisms may be acting at the level of other enzymes involved in the digestion, breakdown and absorption of carbohydrates (carb digestion genes -CDGs). Aim of the study is to study the prevalence of this genetic alteration in a large number of IBS patients as compared to asymptomatic controls.
The main aim of this study is to evaluate the clinical efficacy of the OITcontrol application in patients undergoing OIT of eggs or milk used during the follow-up of this treatment.
There are a lot of parents who believe that their child may not tolerate cow's milk because they develop symptoms such as redness of the skin or they may vomit. It is not always easy to find out if these infants should indeed avoid drinking cow's milk or that the symptoms are caused by something else, for instance because they have a viral illness. The goal of the investigators is to find out if cow's milk should be introduced in the hospital or if it can also be advised to perform the introduction at home to determine if an infant can drink cow's milk without developing symptoms. Half of the participants will drink cow's milk in the hospital. This test is performed on two days. On one of the days cow's milk will be offered. On the other day a look-alike substance is offered. The other half of the participants will drink cow's milk at home by starting to drink a little bit of milk and in a few steps drink a normal bottle of cow's milk. The main question is whether both tests can be used to find out if an infant can drink cow's milk without developing symptoms.
The purpose of this study is to investigate differences of the bowel wall thickness visible in conventional ultrasound and bowel perfusion using quantitative Contrast-Enhanced Ultrasound in patients with Crohn´s disease in comparison with healthy controls and patients with food allergy.
The goal of this clinical trial is to learn about oral immunotherapy in food allergic children < 30 months of age. The main question it aims to answer is: What is the clinical- and cost-effectiveness of early low-dose oral immunotherapy aimed at long-term tolerance induction. Participants will receive oral immunotherapy for 1 year with a maintenance dose of 300 mg allergenic protein and are compared with food allergic infants not receiving oral immunotherapy to compare with natural tolerance development.