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Effects of alkaline on horny layer cellularity

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Summary

The microscopical changes of plantar Str. corneum after immersion in alkaline were investigated. For this purpose a test system was used in which unexcised skin of guinea pig hind feet was exposed and subsequently analysed by the FITC-staining method. The effect of KOH on the Str. corneum consisted in an immediate swelling of the outer cell layers which was followed by a further increase in cell volume. Cells became separated layer by layer after maximal swelling. There is a high and constant rate of cell loss, when treated superficial cells are repeatedly removed as compared to permanent immersion. Thus, the buffering capacity of the treated outer cell layers has a rate limiting effect upon alkaline-induced cell loss in the Str. corneum.

Zusammenfassung

Die Wirkung von Alkali auf nichtexcidierte Sohlenhornschicht wurde mikroskopisch und quantitativ untersucht. Nach Exposition in situ wurden Gefrierschnitte angefertigt und mit der FITC-Färbemethode dargestellt. Die äußeren Zellagen des Str. corneum schwollen sofort nach Alkalikontakt, erst nach weiterer Volumenzunahme erfolgte die Ablösung vom Gewebsverband. Sie erfolgte schrittweise von Zellage zu Zellage. Der Zellverlust verlief linear durch die gesamte Hornschicht, wenn die vorbehandelten Zellen durch Zwischenspülung entfernt wurden. Die Ergebnisse weisen auf die Pufferwirkung hydrolytisch veränderter Hornzellen hin.

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Huber, C., Christophers, E. Effects of alkaline on horny layer cellularity. Arch. Derm. Res. 258, 169–173 (1977). https://doi.org/10.1007/BF00561622

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  • DOI: https://doi.org/10.1007/BF00561622

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