View clinical trials related to Allergic Asthma.
Filter by:Food allergy is a common chronic condition in childhood. Recent studies have suggested that the natural history of food allergy has changed during the last two decades, with an increased prevalence, severity of clinical manifestations, and risk of persistence into later ages. The increased food allergy prevalence in children has an important economic impact, with significant direct costs for the healthcare system and even larger costs for the families of food-allergic patients. In addition, children with food allergies are at increased risk to develop other allergic manifestations later in life. According to a recent study, children with a food allergy are 2 to 4 times more likely to develop other atopic manifestations such as asthma (4.0 times), atopic eczema (2.4 times), and respiratory allergies (3.6 times), compared to children without a food allergy. Cow's milk allergy is among the most common food allergy in early childhood, with an estimated prevalence of 2% to 3%. It has been previously showed that in children with cow milk allergy, an extensively hydrolysed casein formula supplemented with the probiotic Lactobacillus rhamnosus GG induced higher tolerance rates compared to extensively hydrolysed casein formula without Lactobacillus rhamnosus GG and other formulas. These findings were consistent with those of a 1-year follow-up study performed in the US that showed better outcomes using an extensively hydrolysed casein formula+Lactobacillus rhamnosus GG vs. an extensively hydrolysed casein formula or amino acid-based formula for the first-line dietary management of cow milk allergy. In addition it has been recently demonstrated that extensively hydrolysed casein formula + Lactobacillus rhamnosus GG reduces the incidence of other atopic manifestations and hastens the development of oral tolerance in children with IgE-mediated cow milk allergy. The present randomized controlled trial (RCT) was designed to test whether different dietary interventions could influence the occurrence of other atopic manifestations in children with IgE-mediated cow milk allergy.
The CSMS was defined by the European Academy of Allergy and Immunology Taskforce as a standardised tool to assess clinical effects of allergen-specific immunotherapy (AIT). The aim of this study is to validate the CSMS as a tool to assess the clinical effects of Depigoid AIT, so that the CSMS can be used in future studies as a primary endpoint as well as a comparative parameter.
Testing of a new ready-to-use Tape in comparison to the currently used skin prick test for the diagnosis of allergies. Assessment of clinical equivalence of the SPT Tape for representative common inhalant allergens to conventional SPT in terms of wheal reaction positivity and overall safety. Tests are performed in patients who have a medical history of relevant allergic rhinitis to any of the tested allergens.
It has been demonstrated that allergic rhinitis (AR) reduces sleep quality by some components such as nasal obstruction. Pollution and allergen exposure worsening AR, sleep quality is deteriorated. Sleep is associated to physical and mental health, alterations in sleep could explain the link between AR and work productivity diminution, impairment in daily activities or emotional problems. However, interactions between air pollution, sleep and allergic diseases are insufficiently understood. The main objective of this study is to determine the impact of pollution and pollens on sleep parameters.
Subjects with allergic asthma developing the required nasal symptoms in response to nasal allergen titration during a screening period will be randomized 1:1 to one of 2 cohorts. All subjects will have repeated nasal challenges with allergen. One cohort will have nasal saline challenge as control. One cohort will have intranasal corticosteroid intervention.
Asthma is a major noncommunicable chronic inflammatory disorder which is characterized by airway inflammation and related to pathological modifications of the bronchial wall structure so called airway remodeling. Airway remodeling seen in asthma is mainly described by epithelial changes, subepithelial fibrosis, increased airway smooth muscle (ASM) mass, decreased distance between ASM and epithelium, mucous gland and goblet cell hyperplasia, vascular changes and edema. Near these well known pathophysiological changes of the airways, the extracellular matrix (ECM) can be distinguished as a new important factor included in development of airway remodeling in asthma.
In this project, PBMCs will be isolated from HDM allergic and non allergic patient and then stimulated with HDM crude extract. The expression of inflammasome and the correlation of inflammasome activation and steroid resistance will be investigated.
The environment during the prenatal period and in early life is a major contributor to the risk of developing childhood asthma. Birth cohort studies from single research centers have identified several factors that affect the risk for developing childhood asthma, including being exposed in early life to allergens, pollutants, viruses and bacteria, and psychosocial stress. Despite such advances, further progress in understanding the root causes of asthma have been hampered by the small size of previous studies, which makes it difficult to: 1) identify asthma risk factors with certainty, 2) know how environmental factors across the United States (U.S.) affect asthma, and 3) whether there are critical ages when pregnant mothers, infants and young children are particularly susceptible to these influences. Furthermore, different research groups tend to use different methods to study asthma, making it difficult to either compare or pool findings. One other challenge is that there are several types (i.e. phenotypes, endotypes) of childhood asthma, but these are poorly understood. To help overcome these challenges, investigators leading 12 asthma birth cohorts across the U.S. have established the Children's Respiratory Research Workgroup (CREW) consortium. CREW proposes to identify specific types of childhood asthma, develop an understanding of what early life environmental influences cause these different types of asthma and when, and identify targets for future efforts aimed at preventing childhood asthma.
The purpose of this study is to establish the influence of the non-steroidal candidate-drug pemirolast on allergen-induced airway obstruction and inflammation in allergic subjects with asthma. Pemirolast is an orally available inhibitor of the release of mast cell mediators. The study will therefore test the hypothesis that global inhibition of the mast cell, resulting in decreased production of most of its mediator molecules, will provide a highly significant anti-asthmatic effect.
The recent interest that the Specific Immunotherapy (ITS) has aroused is due to the positive potential role that could be played, in particular in the forms of allergic asthma, because this method constitute the only intervention (unlike that pharmacologic) able to act on the same causes of the disease, altering the natural history. To achieve this the investigator has tried to use the specific subcutaneous immunotherapy (SCIT), to which there are studies that, with scientific rigor, have demonstrated the benefits.