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Differentiation of skin sensitizers from irritant chemicals by interleukin-1α and macrophage inflammatory protein-2 in murine keratinocytes : Differentiation of skin sensitizers from irritant chemicals by interleukin-1 alpha and macrophage inflammatory protein-2 in murine keratinocytes
Cited 11 time in
Web of Science
Cited 12 time in Scopus
- Authors
- Issue Date
- 2013-01
- Publisher
- Elsevier BV
- Citation
- Toxicology Letters, Vol.216 No.1, pp.65-71
- Abstract
- The development of novel alternative testing methods is required to identify the sensitizing capacity of chemicals as a replacement for animal experimentation. We aimed to evaluate in vitro assays as screening tools for detecting skin sensitizers. The murine epidermal keratinocyte cell line HEL-30 was exposed to 16 relevant skin sensitizers and 6 skin irritants. The dose causing 75% cell viability (CV75) measured by an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was chosen as a highest dose and three more doses (0.5 x, 0.1 x, and 0.01 x of CV75) were tested. As parameters, levels of interleukin 1 alpha (IL-1 alpha), macrophage inflammatory protein 2 (MIP-2), IL-6, and IL-18 production were measured using 4 different doses. The accuracy of detecting sensitizers or irritants by IL-1 alpha or MIP-2 alone was exactly same: 75% (12 out of 16) for sensitizers, 83% (5 out of 6) for irritants, and overall 77% (17 out of 22). However, combination of IL-1 alpha and MIP-2 showed better accuracy: 94% (15 out of 16), 67% (4 out of 6), and overall 86% (19 out of 22). IL-6 and IL-18 could not differentiate sensitizers from irritants. This study suggests that the combination of pro-inflammatory cytokines IL-1 alpha and MIP-2 in murine HEL-30 cells can be a reliable in vitro method for identifying chemicals that may act as skin sensitizers. (c) 2012 Elsevier Ireland Ltd. All rights reserved.
- ISSN
- 0378-4274
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