View clinical trials related to Hypersensitivity.
Filter by:The current study seeks to test differences between a single-session large-group format of standard exposure, enhanced exposure, and a control condition in treating anxiety sensitivity. It is hypothesized that 1) participants assigned to either exposure condition will evidence greater reductions in anxiety sensitivity from pre-treatment to posttreatment relative to those in the control condition; 2) participants assigned to the enhanced exposure condition will evidence greater reductions in anxiety sensitivity from pre-treatment to posttreatment relative to those in the standard exposure condition. The investigators will test putative moderators and mechanisms of action. Prior to initiating the study for purposes of data analyses, the investigators will pilot study procedures during Spring 2020.
This dose finding, multi-cohort study is designed to evaluate the safety and efficacy of intradermally-injectedTNX-2100, synthesized SARS-CoV-2 peptide antigens and assess the presence and magnitude of DTH reactions.
The Anaphylaxis Registry aims to assess data in a standardized form about symptoms, triggers, cofactors and therapy management from patients who experienced an anaphylactic reaction. This should improve diagnosis and long-term management of these life-threatening allergic reactions.
Although the superiority of ultrasound guidance over neurostimulation (NS) has been demonstrated, it has its limits, namely when used for a deeper block (device limits) or if used by a less experienced operator (ability to recognize structures, to correctly position the needle). In addition, its use has failed to consistently prevent intra-neural injection. The question of the usefulness of NS in addition to ultrasound is therefore still relevant. A great geographical disparity exists in the habits of nerve localization. The reluctance to use NS stems mainly from doubts about its effectiveness. The threshold used to consider that the needle is sufficiently close to the nerve and the one used to exclude an intraneural injection have been disputed in several studies. Another weakness of studies concerning NS since the advent of ultrasound guidance is the impossibility of generalizing the results. All clinical studies were performed in an academic setting, and a large majority of them specify that the blocks were performed by - or supervised by - regional anesthesia experts. The only study that attempted to determine the sensitivity of NS used ultrasound as a gold standard. The choice of the ultrasound position as the gold standard is debatable, since it is dependent of the operator. The clinical success of nerve blocks would be a better standard. No study to date has made it possible to calculate the specificity and sensitivity of NS in addition to ultrasound guidance, and therefore, to obtain the positive and negative predictive values of the technique. Obtaining these values could allow each clinical setting or individual to determine the contribution of NS to their rate of success, as a modest increase in the success rate or a minimal decrease in the risk of neuropathy would be clinically significant. The hypothesis is that the sensitivity and specificity of NS justifies its use in combination with ultrasound guidance in most settings, but that the gain in efficiency varies depending on the context (for example depending on the local success rate). To determine the required sample size to test this hypothesis and plan for a definitive study on the question, the investigators need to know what is the local failure rate (incidence of studied event) and what could be the possible rate of patient enrollment. This preliminary, feasibility study will aim to confirm that the local failure rate is compatible with the 5% rate observed in the literature.
Combining genomics and imageomics to predict the sensitivity of neoadjuvant pemetrexed and cisplatin chemotherapy in patients with lung adenocarcinoma
The interest of health databases in anesthesia is no longer to be demonstrated. The aim of this research was to develop a natural language processing approach to establish a classification of adverse events observed during the perioperative period and to facilitate their analysis: The main objective of the study was to identify what a "naïve" unsupervised model would discover based on Adverse Event (AE) descriptions. Our second goal was to identify apparently unrelated events whose combination could favor the occurrence of an AE
IgE-mediated food allergy can manifest with reactions ranging from hives to anaphylactic shock. The diagnosis is based on the confirmation of sensitization to the food allergen by skin tests (prick) and the determination of specific IgE directed against the food source and molecular allergens. The gold standard remains the oral provocation test, which is performed in a hospital environment. Once the diagnosis is made, an elimination diet is still considered as the cornerstone of treatment for most food allergies. While some allergies, such as cow's milk or egg, tend to resolve spontaneously, others, such as allergy to pecan nuts, show a tendency to be persistent. In addition, pecan allergy is often characterized by potentially serious clinical reactions, compared to other foods, which can even be life threatening. In our clinical practice, the investigators found that patients with allergies to pecan nuts often present with severe hypersensitivity reactions when challenged orally to this food. Beyond this information, there are few studies regarding pecans. The investigators decided to retrospectively evaluate the results of oral food challenge and of the allergy work-up in our patients sensitized and allergic to pecan nuts, to better understand the current epidemiology of such food allergy.
Cention-N(commercially available restorative material) is a cost effective restoration for posterior restorations. Post-operative sensitivity is of great concern as far as any type of restorative material is concerned. Reduction of post-operative sensitivity is still a major on-going research. Timely advancement has lead to the discovery and usage of polymer bur for reduction of excess tooth removal, and thus reduction of sensitivity. Therefore the novelty of this study is comparision of the post operative sensitivity of Cention-N(commercially available restorative material) using conventional and polymer bur using Visual Analog Scale.
Pegylated liposomal doxorubicin (PLD) was an anthracycline nanomedicine to be approved for advanced breast cancer and other solid tumor therapy and showed a good disease control rate (57%). PLD could induce hypersensitivity reaction (HSR). There are about 9-25% patients got infusion reaction or HSR. Severe HSR could lead to allergic shock even presyncope or threat to life. To our knowledge, there were no sensitivity biomarker to predict the PLD induced HSR. And the mechanism of PLD induced HSR is unknown yet. Therefore, to analyze and discuss the biomarkers and mechanism of PLD induced HSR in advanced breast cancer, we design this prospective, observational, biomarker study.
Non-IgE-mediated cow's milk allergy (CMPA) is associated to gastrointestinal symptoms, and its cause remains poorly understood, limiting the identification of specific markers to help with the diagnosis. Using a non-invasive method, the aim of this study is to identify new protein markers as well as to profile the bacteria (germs) released in stools of infants during the inflammatory process of this condition (acute and recovery phase). The study group will include infants who are born at term by an uncomplicated birth and diagnosed with non-IgE-mediated CMPA in the first 4 months of life, while the control groups will consist of infants either healthy or infants diagnosed with IgE-mediated CMPA or with a non-allergic gastrointestinal inflammatory condition (NAGIC). All groups will be matched for age, gender, type of feeding and mode of delivery. Stool, urine and blood samples (the latter only if already taken during the hospital admission in severe cases) will be collected at the acute and the recovery phase of this condition while the patient follows a diary free diet (breast milk or hypoallergenic formula milk). Protein markers, bacteria and their products will be measured in stool, urine and blood samples. These measurements will be carried out at the University of Glasgow, Human Nutrition Section labs at Glasgow Royal Infirmary and other University of Glasgow research labs as required. The ultimate aim is to explore the potential role of immune protein markers and bacteria in stools and urine and their possible use in diagnosing the condition non-invasively. Further understanding of the disease's cause may contribute to the development of new infant feed that could provide gut protection.