Assessment of the different skin sensitization potentials of irritants and allergens as single substances and in combination using the KeratinoSens assay

被引:7
作者
De Rentiis, Anna M. A. [1 ]
Pink, Mario [1 ,2 ]
Verma, Nisha [1 ]
Schmitz-Spanke, Simone [1 ]
机构
[1] Friedrich Alexander Univ Erlangen Nurnberg FAU, Inst & Outpatient Clin Occupat Social & Environm, Henkestr 9-11, D-91054 Erlangen, Germany
[2] German Fed Inst Risk Assessment BfR, Dept Chem & Prod Safety, Berlin, Germany
关键词
allergens; combined exposures; irritants; KeratinoSens assay; mixtures; skin sensitization;
D O I
10.1111/cod.13762
中图分类号
R392 [医学免疫学];
学科分类号
100102 ;
摘要
Background People are exposed to mixtures containing allergens and irritants often causing contact dermatitis. Therefore, regulatory authorities require systematic information on the effects of mixtures on the sensitization threshold. In this study a moderate (cinnamal) and a weak (ethylene glycol dimethacrylate) allergen were combined with irritants covering different mechanisms of action (sodium dodecyl sulfate, salicylic acid, and alpha-pinene). For a systematic approach, the single substances were initially tested using the KeratinoSens assay. Thereafter, each allergen was combined with noncytotoxic concentrations of the irritants. Method The KeratinoSens assay was applied for the single substances according to OECD (Organisation for Economic Co-operation and Development) Test Guideline 442D. Based on these results, three noncytotoxic concentrations of the irritants were selected and applied simultaneously with 12 concentrations of the allergens to the KeratinoSens cells. Sensitization threshold and cytotoxicity were measured and compared with the individual testing. Results The combinations of allergens and irritants differed from the effects of the single substances and lowered the sensitization threshold. The quantitative approach allowed a clear description of the changes which varied by factors between 1.1 and 10.3. Conclusions Overall, the allergen was the prominent compound in the mixture and its nature appeared to determine the degree of the response.
引用
收藏
页码:317 / 325
页数:9
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