TRANS-FOODS: Preventing Peanut Allergy Through Improved Understanding of the Transcutaneous Sensitisation Route, Novel Food Processing and Skin Care Adaptations
King's College London
120 participants
Apr 5, 2024
INTERVENTIONAL
Conditions
Summary
This project aims to study the immune responses to peanut allergen in those with a skin barrier defect with and without skin massage, specifically it aims to: 1. Establish if peanut allergen components can pass into human skin through regular massage using the peanut protein-containing extract. 2. Clarify whether this effect is amplified in those with an impaired skin barrier (AD and dry skin vs healthy controls). 3. Assess whether peanut protein components can be detected in interstitial skin fluid (ISF) using a suction device. 4. Test whether peanut protein components present in ISF are able to induce activation of basophils in blood of peanut allergic donors. 5. Assess whether the transcutaneous uptake of peanut protein can be reduced by the prior use of a barrier enhancing cream.
Eligibility
Inclusion Criteria2
- Adult healthy volunteers (50% of the cohort), and adults with dry skin and AD (fulfilling the refined Hanifin and Rajka criteria, 50% of the cohort).
- Willingness to apply the study intervention and to not use any other topical preparations over theforearms during the study period.
Exclusion Criteria4
- History of peanut allergy.
- Positive skin prick test to peanut (>0 mm).
- No regular consumption of peanut products.
- Widespread AD, in particular if this involves the test sites of the forearms.
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Interventions
Application of the barrier enhancing preparation around 30 minutes before application of the peanut protein extract +/- massage after extract application;
Locations(1)
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NCT05407012