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KMID : 0438219750120030705
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Korea University Medical Journal
1975 Volume.12 No. 3 p.705 ~ p.721
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Mycological Studies of Dermatophyte Grown on the Hair, Nail, and Cow Horn
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Abstract
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There are many reports concerning the behaviors and morphological characteristics of the dermatophytes, the keratinophylic fungi, grown on the hair. The nail and cow horn may be expected to have different morphological behaviors to the dermatophytes, but so far the morphological studies of the dermatophytes with the nail and cow horn were not seen in the literature.
In this study, eight species of dermatophytes(Microsporum canis, M. gypseum, M. ferrugineum, Epidermophyton floccosum, Trichophyton rubrum, T. mentagrophytes var. granulosum, T. mentagrophytes var. interdigitale, and T. mentagrophytes var. asteroides) were cultured on the slices of cow horn and human nail which were maintained on the soil in the constant moisture, and the macrocsopic and microscopic characteristics were observed in comparison with those on the hair.
1) T. mentagrophytes var, asteroides was grown whitish and powderly on the hair, but other dermatophytes were grown arachnoid and gray or whitish gray.
2) M. ferrugineum was grown membranously in yellowish white hue on the slices of cow horn and human nail, however, E. floccosum was grown yellowish brown and buff, and T. mentagrophytes were grown whitish and fluffy.
3) Microconidia were developed in all species of dermatophytes grown on the horny materials. Macroconidia, however, were not found in T. mentagrophytes var. asteroides, and their shapes and degrees were varied greatly with different species.
5) Mycelial penetrance to cow horn was superficial in T. mentagrophytes var. asteroides but in other seven species of dermatophytes were observed deep in penetrance.
6) Mycelia of M. ferrugineum, T. mentagrophytes var. interdigitale, and T. mentagrophytes var. asteroides were grown parallel to the running of the horny fibers; while in other dermatophytes vertical.
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