2009
DOI: 10.1111/j.1439-0507.1969.tb03428.x
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Griseofulvin-resistant Mutants in Dermatophytes 1. The frequency of spontaneous and UV-induced mutants

Abstract: Summary In first part of the paper the results of the experiments focused on obtaining mutants resistant to GF were stated. For the experiments two compatible strains of the dermatophyte Microspomm gypseum were used. The mutants could be obtained from the micro‐conidial strain 155 only. It was found that the spontaneous resistant mutants occur with a frequency 10−8. By the ultraviolet radiation the frequency of the mutants was increased about ten times. In total 13 spontaneous and 74 ultraviolet‐induced mutant… Show more

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Cited by 6 publications
(2 citation statements)
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“…First systemic antifungal used was griseofulvin, later on azoles like ketoconazole, fluconazole, and itraconazole came. However dermatophytes long back have started showing the resistance to griseofulvin [14]. Fluconazole for dermatophytes is not as effective as for Candida species.…”
Section: Discussionmentioning
confidence: 99%
“…First systemic antifungal used was griseofulvin, later on azoles like ketoconazole, fluconazole, and itraconazole came. However dermatophytes long back have started showing the resistance to griseofulvin [14]. Fluconazole for dermatophytes is not as effective as for Candida species.…”
Section: Discussionmentioning
confidence: 99%
“…Gute Erfolge, aber auch Therapieversager sind berichtet worden, besonders bei den Onychomykosen (Michaelides et al €961;Gever 1969;Hantschke und Gotz 1981 Die Substanzen, die Griseofulvin in der notigen Menge losen, wie Aceton, Toluol, Dioxan, Essigsaure, N"'-Dimethylformamid und andere (Adam 1968) fallen bei Zugabe von Wasser die Substanz wieder aus oder verursachen selbst in der Pilzkultur mikroskopische oder makroskopische Veranderungen, wie sie durch Griseofulvin ausgelost werden (Steger 1983 Lenhart (1969) als Ursache fur eine starke Verringerung der Griseofulvinempfindlichkeit nach W-Bestrahlung der Pilzkulturen an. Rieth wies 1979 darauf hin, daS fruktifiiierendes und vegetatives Myzel durch Griseofulvin unterschiedlich beeinflust werden.…”
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