Improving the Diagnosis and Prevention of Contact Allergy to Rubber Accelerators

This research aims to better understand how certain chemicals, found in rubber products like gloves, cause allergic skin reactions. Specifically, it looks at thiurams and carbamates, which are common ingredients that can lead to contact dermatitis, a skin irritation caused by direct contact with an allergen. The study will explore how different concentrations of these chemicals trigger reactions in people and whether damaged skin, like that from frequent hand washing, worsens the condition. This is important because it could lead to improved diagnosis and prevention strategies for those who work with rubber products and are prone to allergies. Participants in the study will be divided into two groups. One group will have their skin pre-irritated with a detergent called sodium lauryl sulfate (SLS) to mimic the effects of frequent hand washing, while the other group will not. After this, all participants will have their forearms exposed to the chemicals every night for a week, simulating the exposure from using rubber gloves. The skin reactions will be monitored and measured using a technique called laser Doppler flowmetry to assess blood flow changes in the skin. Additionally, participants will undergo patch tests on their upper backs to further investigate their skin's sensitivity to these chemicals. This approach helps determine the severity of reactions and improves understanding of how repeated exposure and pre-existing skin conditions affect allergic responses.