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- W4377092585 abstract "Abstract Background Psoriasis is a chronic inflammatory disease in which there is hyperproliferation and abnormal differentiation of keratinocytes. Since high levels of KLK7, an enzyme inhibited by zinc (Zn 2+ ) ions, are present in psoriatic lesions, we have studied the effect of zinc ions in the viability of keratinocytes, as well as in the activity of KLK5 and KLK7 and in the expression of epidermal markers. Methods and Results The cells were cultured in the absence or presence of Zn 2+ ions (5.0, 10 and 25 µM). Cell viability was evaluated by the MTT method after during 14 days. Cell death was evaluated by flow cytometry using propidium iodide. The activity of the KLK was evaluated on the hydrolysis of synthetic substrates. Expression of involucrin, filaggrin, cytokeratins (CK) 5, 10 and 14 was evaluated by quantitative PCR. Cell incubation with Zn 2+ ions did not result in significant changes in cell viability. By MTT assay, it was observed that the cultures incubated with 10 and 25 µM Zn 2+ ions showed a decrease in the number of viable cells in comparison to the control. Cells cultured for 1 day in the presence of 25 µM Zn 2+ ions displayed a decrease in KLK7 activity. In the presence of Zn 2+ ions, it was shown an increase in the expression of CK5, 10 and 14, involucrin and filaggrin. Conclusions These results have shown that zinc ions can affect the differentiation of HaCat cells, contributing for future therapeutic trials related to psoriasis based on the modulation of KLK activity." @default.
- W4377092585 created "2023-05-20" @default.
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- W4377092585 date "2023-05-19" @default.
- W4377092585 modified "2023-09-30" @default.
- W4377092585 title "Effect of zinc ions on the proliferation and differentiation of keratinocytes" @default.
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- W4377092585 doi "https://doi.org/10.21203/rs.3.rs-2913653/v1" @default.
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