Contact dermatitis · 2016
Acetophenone azine: a new allergen responsible for severe contact dermatitis from shin pads.
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Raison-Peyron Nadia, Bergendorff Ola, Bourrain Jean Luc, Bruze Magnus
Аннотация
BACKGROUND: Contact dermatitis resulting from the use of shin pads is usually caused by rubber components, dyes, benzoyl peroxide, or formaldehyde resins.
OBJECTIVES: To investigate and identify a new allergen in shin pads that was responsible for severe contact dermatitis in a young football player.
METHODS: High-performance liquid chromatography (HPLC) of samples of shin pads was performed. The boy was patch tested with pieces of shin pads and with acetophenone azine, a chemical substance identified by HPLC in the foam of the shin pads.
RESULTS: HPLC identified acetophenone azine at concentrations of approximately 20 µg/g of shin pad samples. Patch tests gave strongly positive reactions to pieces of shin pads and to acetophenone azine down to 0.001% in acetone, whereas acetophenone and hydrazine sulfate were both negative. Twenty controls were negative for acetophenone azine 0.01% in acetone.
CONCLUSIONS: Acetophenone azine is a new, strong allergen of shin pads, and more generally of other sport equipment based on ethylene vinyl acetate. It may be used as a biocide, but this has to be confirmed. Further investigations are needed to understand factors such as exposure, cross-reaction patterns, metabolism, and the optimal patch test preparation.
OBJECTIVES: To investigate and identify a new allergen in shin pads that was responsible for severe contact dermatitis in a young football player.
METHODS: High-performance liquid chromatography (HPLC) of samples of shin pads was performed. The boy was patch tested with pieces of shin pads and with acetophenone azine, a chemical substance identified by HPLC in the foam of the shin pads.
RESULTS: HPLC identified acetophenone azine at concentrations of approximately 20 µg/g of shin pad samples. Patch tests gave strongly positive reactions to pieces of shin pads and to acetophenone azine down to 0.001% in acetone, whereas acetophenone and hydrazine sulfate were both negative. Twenty controls were negative for acetophenone azine 0.01% in acetone.
CONCLUSIONS: Acetophenone azine is a new, strong allergen of shin pads, and more generally of other sport equipment based on ethylene vinyl acetate. It may be used as a biocide, but this has to be confirmed. Further investigations are needed to understand factors such as exposure, cross-reaction patterns, metabolism, and the optimal patch test preparation.