Evaluating the toxicity of reactive dyes and dyed fabrics with the HaCaT cytotoxicity test
Wybrane pełne teksty z tego czasopisma
We investigated the cytotoxicity of reactive dyes and dyed fabrics using human keratinocyte HaCaT cells in vitro. The HaCaT cells were exposed to three monochlortriazinyl dyes: yellow, red and blue with different concentrations. The HaCaT cells were also exposed to water extracts of dyed fabrics. After 72 hours exposure, the protein contents of the samples compared to the protein contents of non-exposed cells were measured. The level of protein content indicates the viability of the cells. The mean inhibitory concentration values (IC50) showed the dye concentration when the protein content of the sample was 50% of the protein content of the non-exposed cells. The mean inhibitory concentration values (IC20) when the protein content of the samples was 80% were also measured. The IC20 values show the limiting value of toxicity. The IC50 values show whether samples are clearly toxic. The IC50 value for the yellow dye was 237µg/ml and the IC20 value was 78µg/ml. The IC50 for the red dye was 155µg/ml: the red dye caused adverse effects under the lowest dye concentration (28µg/ml). The IC50 value for the blue dye was 278µg/ml and the IC20 value was 112µg/ml. Cotton fabrics dyed using these same three reactive dyes were extracted with water and the extracts were analysed using the HaCaT cell line. The viability of the cells was good, the protein content of the samples being over 80% compared to the non-exposed cells. The HaCaT cell test indicated the toxicity of pure dyes; the dyed fabrics had no adverse effect. The human keratinocyte HaCaT cells seem to be a useful tool for the study of the purity/toxicity of dyes and other substances applied to textiles.
Bibliogr. 29 poz.
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- University of Kuopio, Facylty of Medicine, Kuopio, ; tel: +358 505954178 Finland , firstname.lastname@example.org
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