Hair Perforation by Keratinophilic Fungi: Haarperforation durch keratinophile Pilze

Summary: The in vitro hair perforation test as described by Ajello and George, was applied to eight species of Chrysosporium and one species each of Microsporum and Trichophyton. Six of them were found to perforate hair while four were negative. Chr. keratinophilum, M. gypseum and Tr. van‐breuseghemii were able to perforate and degrade hair rapidly. The micromorphological changes were also described. Zusammenfassung: Der Haarperforationstest in vitro nach Ajello und George wurde bei 8 Chrysosporium‐Arten und je 1 Microsporum‐ and Trichophyton‐Art angewendet. Sechs von ihnen perforierten Haare, 4 waren negativ. Chr. keratinophilum, M. gypseum and Tr. vanbreuseghemii waren in der Lage, Haare zu perforieren und schnell abzubauen. Die mikromorphologischen Veränderungen werden beschrieben.