View clinical trials related to Allergy.
Filter by:Mold allergies are becoming increasingly important among the population. Increasing amounts of fungal spores are analyzed in air-samples because of urbanization, industrialization of food products and climate change. Mold also grows indoor and hence lead to additional health complaints. Alternaria alternata, and its only major allergen Alt a 1, is the most important fungus for allergy sufferers. Alternaria alternata can not only cause allergic symptoms but can also cause intensified asthmatic symptoms. Besides Alternaria alternata, there are over 700 other species of the genus Alternaria. The influence of these other species on allergic symptoms is poorly understood. Furthermore, prevalence and incidence of an allergy to Alternaria alternata among the Austrian population is not known. Estimates range between 1-5% among the Austrian population. This study aims to further investigate the incidence and characteristics of an allergy to Alternaria in Austria. This will be investigated with the help of participants (50 Alternaria allergy sufferers and 20 non allergic participants), spore counts in Austria and crowd-sourced symptom data.
IgE-associated allergies are consistently on the rise forming an enormous wellbeing concern and affecting about 25% of the population around the world, with main prevalence in developed nations. Birch pollen is one important allergen driving allergic conjunctivitis and rhinitis. The characteristics and location IgE producing cells in the nose and their contribution to the subsequent increase in allergen-specific IgE levels in the serum have so far poorly been investigated. Understanding these mechanisms is critical for the development of new therapeutic approaches and is thus the aim of the proposed study. Thus, the investigators plan to conduct a two-armed study of a randomized placebo-controlled double-blind nasal allergen provocation where 30 patients will be provoked with birch pollen extract (n=20) or placebo (n=10) out of the birch pollen season (October) and follow them closely for up to 4 months. Therefore, the objective of this study is to investigate the localization and characteristics of IgE producing cells in the nasal mucosa contributing to the allergen-induced boosts of specific serum IgE upon natural and controlled nasal allergen exposure.
Chronic cough is a very unpleasant symptom, significantly reduces the patient's quality of life, and bothers the neighborhood. A very common cause or co-factor of chronic cough is extraesophageal reflux (EER). The aim of the project is the precise diagnosis of EER in patients with chronic cough (in patients with a simultaneously diagnosed allergic cause and without it).
Hemp is a plant of the Cannabaceae family. Cannabis sativa, derived from female flowers, is the first illicit substance used by adolescents and is a major public health problem. Its psycho-active effects come from tetrahydrocannabinol (THC). Unlike recreational cannabis, industrial hemp derived from cannabis sativa has a high level of cannabidiol (CBD) but a negligible level of tetrahydrocannabinol. Its seeds are now consumed in various forms and generate increasing interest. Seeds have many nutritional benefits. It seems important to take an interest in hemp, given the recent expansion of medical cannabis and the increasing use of cannabis for recreational purposes. It is incriminated in various allergies (contact dermatitis, asthma, rhinoconjunctivitis) but also in the occurrence of anaphylaxis to certain foods by cross-allergy in atopic subjects, in association with an Lipid-Transfer Proteins (LTP protein), present in the flower of Cannabis sativa. Unlike the allergy to recreational cannabis, the allergenicity of hemp seeds is little studied. Hemp seed can cause severe anaphylactic reactions. In all reported cases, the prick-tests were positive for the seeds. Often, patients had never been in contact with hemp seeds but had already been exposed to cannabis by respiratory or manual routes. The investigators hypothesize that sensitization by the skin or respiratory route (cannabis smokers, passive exposure to cannabis, workers exposed to hemp, etc.) could lead to the development of a food allergy to hemp seed.
The purpose of this study is to strengthen our ability to accurately diagnose allergies and understand cellular, humoral, genetic components and physiological changes in allergic disease
This is a prospective birth cohort study assessing the role of maternal and environmental factors on the development of allergic diseases in children. Pregnant mothers will be enrolled and we will examine her skin barrier with skin tape strips (STS) and transepidermal water loss (TEWL), along with blood work. We will then follow her offspring and perform similar testing, along with detailed questionnaires inquiring about exposures such as use of detergents and soaps, sunlight exposure, and pollution exposure. When the infant is around 12 months old, we will contact the family via telephone to see if the child developed any allergic conditions within their first year of life, such as eczema, food allergy, or wheezing. A final questionnaire will be performed.
In this project we study if spores from birch rust fungi (Melampsoridium Betulinum = MB) may be the eliciting allergen in patients with seasonal airway allergy during autumn in North Norway. Patients with suspected allergy to MB are compared with non-allergic controls using data about allergic disease and daily allergic symptoms during autumn. Daily spread of MB spores are compared with daily variations in allergic symptoms. Sensitization to MB and MB allergy are tested with skin prick test, specific immunoglobulin E (IgE) in serum, nasal provocation test and basophil activation test (BAT).
This study aims to test the effectiveness of virtual reality (VR) as a non-pharmaceutical intervention to reduce pain and anxiety in children undergoing painful procedures in Phlebotomy, Radiology, Infusion, Orthopedics, Gastroenterology, and Immunology, amongst others, at CHLA, as measured by self- and proxy-report. Examples of the painful procedures include IV sticks, cast removals, allergy testing, and anorectal manometries.
Atopic dermatitis (AD) is a chronic allergic skin disease with onset in early childhood and increasing prevalence in Westernized countries. Current well newborn guidelines for washing babies with soap were adopted by U.S. hospitals in the 1970s, before the rise in prevalence of allergic disease and AD (also called eczema). Increased transepidermal water-loss (TEWL) in newborn skin at 2 days of life was recently identified as a predictor of AD and allergy development by age 2 years. Risk for AD in babies was also linked to decreased skin colonization with certain skin microflora, such as staphylococcal organisms. Together, these data raise the question of whether newborn skincare guidelines have the potential to modify a baby's risk for allergy development. Our current practice of washing babies with soap may alter TEWL or other natural factors in skin that protect babies from development of AD and allergy. More knowledge is needed about the impact of infant skincare practices on allergy development. The objective of this pilot study is to determine the impact of a baby's first bath on his/her transepidermal water loss (TEWL) and skin microflora. Study procedures will include collection of TEWL measurements and skin swabs for skin microflora analysis pre/post first bath in healthy term newborns at UVA. This data will serve as preliminary data for future studies.
The purpose of this study is to evaluate if omalizumab co-treatment may allow reintroduction of honey bee venom immunotherapy in patients with immunotherapy treatment failure due to systemic reactions.