Active clinical trials for "Hypersensitivity"

This study aimed to validate new recipes for cow's milk, hen's egg, soy, cod and wheat, to be used in blinded low-dose food challenges.

In patients with chest pain the diagnosis of a heart attack (myocardial infarction) is made where there is evidence of heart muscle damage using a blood test to measure the heart muscle protein troponin. A new a more sensitive troponin test may help us to identify patients with myocardial infarction more easily. The investigators propose to evaluate whether use of a novel high-sensitivity troponin test to lower the threshold for diagnosis of myocardial infarction is appropriate. If increased sensitivity does not reduce specificity for the diagnosis, then this new test will improve patient outcome through better targeting of therapies for coronary heart disease. However, if increased sensitivity leads to poor specificity, then patients may be misdiagnosed and given inappropriate cardiac medications with potentially detrimental outcomes. In ten secondary and tertiary care hospitals across Scotland, the investigators will undertake a stepped wedge cluster randomized controlled trial of the implementation of a novel high-sensitivity troponin test. The primary end-point will be the one-year rate of cardiovascular death or recurrent myocardial infarction. This will establish whether the introduction of this high-sensitivity troponin test into routine clinical practice is beneficial to patient management and outcomes. A subset of patients will be asked to give consent for inclusion into a sub-study that will permit storage of blood samples and will require the completion of a survey during the index admission and after 6 and 12 months of follow up.

A non invasive transdermal sensor device was developed by the Im2Np laboratory to determine the presence of vapor of alcohol in insensible perspiration. One of possible application would be a continuous and non invasive monitoring of drinking behavior. To investigate the validity of this method, it's necessary to compare Transdermal Alcohol Concentrations results obtained by this new device with Blood Alcohol Concentrations and breath Alcohol Concentrations provided by reference methods. The purpose of this study is to identify the kinetic of alcohol concentration in blood, exhaled air and sweat after alcohol ingestion.

A new male-specific dog-allergen-component has been found (Can f 5) which indicates possible differences in allergic reactions to male and female dogs. This has not yet been tested in real life. The aim is to test if sensitization only to the male-dog specific allergen-component, Can f 5, results in a positive skin prick test (SPT) to male dog extract and not female dog extract. In addition, the investigators want to investigate if allergic symptoms only occur when exposed to the male dog extract by conjunctival provocation.

The overall objective is to validate the methodology of a metaplasticity experimental design by assessing change in motor excitability after administration of priming transcranial direct current stimulation (tDCS) followed by repetitive transcranial magnetic stimulation (rTMS) in healthy human participants.

The proposed study intends to compare the outcome of food challenge in hazelnut allergic patients with the outcome of basophile activation tests using hazelnut extract and components.

Dentinal hypersensitivity [DH] is a common condition in daily practice, especially in patients who have abrasion, attrition, gingival recession and erosion of teeth. It can affect individuals in the age range of 20-50 years.In a recent systematic review, it was reported that no gold standard treatment modality for dentin hypersensitivity has been established Thus there is a need to evaluate new formulations in different settings and in different populations and to compare those to commonly used agents seeking better results in pain relief for our patients. Studies showed that dentifrice formulations containing 8% arginine in combination with calcium carbonate and fluoride have the ability to plug dentinal tubules, by clumping of both arginine and calcium carbonate that bind with the negatively charged dentin . Aim of the study is to clinically evaluate toothpaste containing 8% arginine, calcium carbonate, and sodium mono-fluorophosphate, in comparison to toothpaste, containing 8% strontium acetate and NaF on the relief of DH in chronic periodontitis patients.

The COBIOPHAD project targets the development of a highly sensitive, selective, and multiplexed diagnostic device to provide a quick and inexpensive in vitro test to address the most prevalent drug hypersensitivity to betalactams antibiotics, (BLCs). During a retrospective study, BLC structures involved in drug hypersensitivity will be identified from sera of allergic patients (versus controls) and coupled on the device. A prospective study will be performed for the recruitment of samples corresponding to patients with known IgE hypersensitivity to BLCs based on results from allergy tests and clinical history. Controls will include: non-allergic individuals with known tolerance to betalactams. The samples will be used for the validation of the COBIOPHAD device in real settings.

This general population based, randomized controled trial aims at answering two major hypotheses: First, systematic early introduction of solid foods decreases the incidence of food allergy and dietary restrictions by the age of one year. Second, stimulation with the symptom-eliciting food rather than avoidance will induce tolerance in babies with non-severe allergic symptoms.

About 20% of the general population are affected by an allergy - with an upward trend. Quite often, allergic people do not consider their disease as serious and suffer from subsequent complications, like allergic asthma, later in their life. The sooner the allergen source is identified, the sooner the therapeutic intervention (e.g. dietary recommendations, allergen avoidance, anti-inflammatory treatment or allergen immunotherapy) can be started. Cross-reactivity may also play an important role. Therefore, a comprehensive allergy test is essential for an optimal treatment of patients. Modern multiplex testing is an individualized diagnostic approach, which may help to identify eligible patients for allergen immunotherapy and may identify risk groups by analyzing the sIgE profile. Until now, published data on the clinical usability of multiplex allergy diagnostic test systems are often limited. Even though, available studies show a good correlation between conventionally used multiplex or singleplex assays (ISAC or ImmunoCAP) and the new multiplex assay (ALEX and ALEX²), the results are often based on small sample sizes investigating many different allergens. Therefore, this clinical performance study is conducted to evaluate the diagnostic accuracy of the ALEX² IgE multiplex test using the Multi Array Explorer (MAX 45k, MacroArray Diagnostics) automated laboratory system in comparison to a conventional IgE singleplex test system as well as clinical symptoms and skin prick test results in a total of 826 patients. Patients with the most common inhalant allergies (e.g. grass pollen, house dust mite or cat allergy) will be included as well as patients suffering from Hymenoptera venom allergy, which is the major cause of anaphylaxis.