Random amplification of polymorphic DNA is useful for the differentiation of several anthropophilic dermatophytes
- 1 December 1997
- Vol. 40 (11-12) , 405-409
- https://doi.org/10.1111/j.1439-0507.1997.tb00175.x
Abstract
Summary. The efficacy of random amplification of polymorphic DNA (RAPD) analysis, a polymerase chain reaction (PCR)‐based technology, as a tool for differentiation of several anthropophilic dermatophytes, that is, Trichophyton mentagrophytes var. interdigitale, T. rubrum and Epidermophyton floccosum, was examined. Total cellular DNA extracted by a mini‐preparation method were used as template DNAs and PCRs were performed using five primers, all of which were synthesized 10‐mers. All of the primers generated PCR products and their electrophoresed profiles were characteristic for each of the species. Since these anthropophilic dermatophyte species could be differentiated clearly by the RAPD analysis, this method may be useful for identification of these species. Minimal intraspecies polymorphisms were observed between the isolates of T. mentagrophytes var. interdigitale. The banding patterns were reproducible using template DNAs prepared at different times from each of stock cultures. Zusammenfassung. Es wurde die Leistungsfähigkeit der RAPD‐Analyse, einer auf der PCR basierenden Methode, als Hilfsmittel zur Differenzierung mehrerer anthropophiler Dermatophyten geprüft, namlich Trichophyton mentagrophytes var. interdigitale, T. rubrum und Epidermophyton floccosum. Die gesamte Zell‐DNA, extrahiert mittels einer Minipräparationsmethode, wurde als Template‐DNA benutzt, und die PCR wurde unter Einsatz von 5 Primern durchgeführt, von denen alle synthetisierte Dekamere waren. Alle Primer führten zu PCR‐Produkten, und ihre Elektrophorese‐Profile waren charakteristisch für jede Art. Da diese anthropophilen Dermatophytenarten eindeutig durch RAPD‐Analyse differenziert werden konnten, dürfte diese Methode für die Artidentifizierung nützlich sein. Geringe Intraspecies‐Polymorphismen wurden zwischen den Isolaten von T. mentagrophytes var. interdigitale beobachtet. Die Bandenmuster waren reproduzierbar auch dann, wenn Template‐DNA zu unterschiedlichen Zeiten vom Kulturenbestand präpariert wurde.Keywords
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