Active clinical trials for "Hypersensitivity"

The objective of this study is to compare the ocular response to CAC (using food allergen sensitive patients) to the systemic response of a previously performed oral food allergen challenge in the same subjects. This study will investigate the potential utility of CAC as a predictive tool for identifying patient response to food allergen challenge and maximum tolerated dose.

The present study aims to investigate the effect of fat level and fat type of a snack on self-reported satiety and associated biomarkers. The relevant individual differences will also be investigated.

Penicillin antibiotics are safe and inexpensive, and target selected bacteria rather than killing a broad range. Unfortunately, around 10% of the population are labelled as 'penicillin allergic'. This is often based on side effects such as rash and diarrhoea, and 90-95% of people with the label are not actually allergic to the drug. The label leads to the use of alternative antibiotics, which tend to more toxic, and less specific about which bacteria they kill; this increases the risk of infections with so-called 'super-bugs', compared to patients without the label. People with the label also have an increased length of hospital stay and rates of readmission. These are significant problems for individuals, as well as wider society. Where the diagnosis is in doubt, the gold standard test for allergy is an oral challenge. Patients undergo skin +/- blood tests prior to a challenge, as these can help make the diagnosis. This combined pathway is expensive and time consuming, so testing cannot be offered routinely to all patients. However in patients with 'historic' reactions (many years previously), skin and blood tests become much less useful; in one study, 100% of patients who skin tested positive for amoxycillin allergy, tested negative 5 years later. Patients with historic reactions can therefore proceed directly to an oral challenge without prior skin or blood testing, since these offer little help in making the diagnosis. This streamlines the pathway, making it quick, non-invasive and cheap. Already established practice in several centres in Europe and beyond, this abbreviated pathway is offered on an ad-hoc basis in some centres in the UK. The aim is to demonstrate that this pathway offers a safe and effective way to perform large-scale delabelling of elective surgical patients, who might not otherwise meet NICE criteria for testing.

There are limited studies on perioperative hypersensitivity (POH) reactions in children. The diagnosis of POH might be underestimated due to the difficulty of recognizing the reactions. Anaphylaxis may go unnoticed due to the unconscious state of the patient. Urticaria may be overlooked due to the sterile covers. This study aimed to evaluate POH reactions prospectively.

This study aims to evaluate the use of different desensitizing agents before in-office bleaching. A total of 64 volunteers were randomly divided into four groups. Before undergoing in-office bleaching with 38% hydrogen peroxide gel (three applications of 15 minutes each, one session), clinicians applied a placebo gel (control group), casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), neutral sodium fluoride gel (NSF), or nano-hydroxyapatite solution (n-HAP) on all buccal surfaces of teeth. The gel was left undisturbed for 4 minutes. Patients recorded their tooth sensitivities on the VAS scale. Kruskal-Wallis test followed by Mann-Whitney U test were used to compare changes in tooth color and intensity of tooth sensitivity between groups.

Background: Early childhood development is highly dependent on the sensitive care provided by their caregivers . Interventions focused on supporting parents to improve their sensitivity have been shown to be effective . The COVID-19 pandemic has had a great impact on mental health , with pregnant women and mothers of children under one year of age being an especially vulnerable group . On the other hand, access to mental health interventions in person is restricted by confinement measures , especially group interventions, so it is relevant to have remote interventions that support this group of mothers. Objectives: to evaluate the feasibility and acceptability of a group videoconferencing intervention to improve maternal sensitivity aimed at mother / infant dyads attended in Primary Health Care in Chile Methodology: a randomized pilot feasibility study will be carried out with a mixed design with quantitative and qualitative evaluations. A face-to-face group intervention with proven effectiveness will be adapted to videoconferencing format , then 50 dyads will be randomized in a 3: 2 ratio to receive the videoconferencing intervention ( n=30) or the delivery of educational brochures (n=20) . The feasibility and acceptability will be evaluated assessing the participation, adherence and satisfaction in a quantitative way, in addition the qualitative evaluation will be carried out through interviews and focus groups. Changes in clinical outcomes will also be evaluated: maternal sensitivity, depressive symptoms, postnatal maternal attachment and infant socio-emotional development. This pilot study will allow the identification of the key parameters for the implementation and evaluation of the intervention, which will allow the design of an effectiveness study in the future.

This 12 week placebo-controlled study evaluates the efficacy and safety of E. hallii supplementation.

This study is a multicentric, prospective, randomized, double blind, placebo controlled trial compared the efficacy of 6 months vs. 3 months of initial prednisolone therapy in decreasing the incidence of FRNS with steroid-sensitive nephrotic syndrome in children age 1 year up to 6 years. Three months tapering prednisolone or placebo are administrated follow by open-label 3 months standard prednisolone therapy.The cumulative incidence of FRNS and adverse events for one year were evaluated in the 3-month and 6-month groups.

Purpose: The proposed research, if successfully implemented, will result in a low-dose, low-cost, and highly effective method for screening of lung cancer, leading to reduction of the lung cancer mortality rate. Using the stationary Digital Chest Tomosynthesis (s-DCT) system the imaging dose for a full tomosynthesis scan is expected to be only 10% of that from a low-dose computed tomography (CT). The targeted imaging time of 2s is 1/5 to 1/3 of that from a current commercial digital chest tomosynthesis (DCT) system at the same imaging dose. Beyond lung cancer screening, the low-dose and sensitive 3D lung imaging modality will likely to find applications in areas such as monitoring of pediatric cystic fibrosis patients where reduction of imaging dose is critical. Participants: One hundred (100) patients undergoing a clinical non-contrast CT for their lung nodules will be asked to have this procedure (scan) within 2 weeks (+/- 1 week) of their clinical CT and chest radiograph, with no intervening procedures or therapies. Procedures (methods): The purpose and endpoint of this study is to compare the sensitivity of the s-DCT system to the conventional chest radiographs with non-contrast chest CT as the reference standard. One hundred (100) patients undergoing a clinical non-contrast CT for their lung nodules will be asked to have this procedure (scan) within 2 weeks (+/- 1 week) of their clinical CT and chest radiograph, with no intervening procedures or therapies.

The aim of the intervention is to examine the effect of a combination of the two bacterial strains BB-12 and LGG, provided for 6 month, on the prevalence of infections and allergic manifestations in small children, and how a combination of BB-12 and LGG affects the immune system, gastrointestinal tract and the microbiota. Children are enrolled during 2 winter seasons.