Mycopathologia

, Volume 174, Issue 2, pp 143–147

Molecular Identification and Antifungal Susceptibilities of Black Aspergillus Isolates from Otomycosis Cases in Hungary

Authors

  • Gyöngyi Szigeti
    • Department of Microbiology, Faculty of Science & InformaticsUniversity of Szeged
  • Sándor Kocsubé
    • Department of Microbiology, Faculty of Science & InformaticsUniversity of Szeged
  • Ilona Dóczi
    • Department of Clinical Microbiology, Faculty of MedicineUniversity of Szeged
  • László Bereczki
    • Department of Clinical Microbiology, Faculty of MedicineUniversity of Szeged
  • Csaba Vágvölgyi
    • Department of Microbiology, Faculty of Science & InformaticsUniversity of Szeged
    • Department of Microbiology, Faculty of Science & InformaticsUniversity of Szeged
Article

DOI: 10.1007/s11046-012-9529-8

Cite this article as:
Szigeti, G., Kocsubé, S., Dóczi, I. et al. Mycopathologia (2012) 174: 143. doi:10.1007/s11046-012-9529-8

Abstract

Otomycosis, also known as fungal otitis externa, has been used to describe a fungal infection of the external auditory canal, but sometimes involving the middle ear. Many fungal species have been identified as infectious agents in otomycosis, with Aspergillus and Candida species being the most common. Among aspergilli, Aspergillus niger is the most commonly described species in the literature. In this study, 14 black Aspergillus strains were analyzed, which were isolated from otomycosis cases in Hungary between 2010 and 2011. These strains were identified as A. niger according to conventional morphological methods. Species identification was based on sequencing of part of the calmodulin gene. Our results indicate that instead of A. niger, A. awamori and A. tubingensis are the predominant species that cause ear infections in Southern Hungary. Antifungal susceptibility tests were carried out against four antifungal drugs: amphotericin B, itraconazole, ketoconazole and terbinafine. All isolates were found to exhibit low in vitro MIC values to amphotericin B, terbinafine and itraconazole. However, the examined isolates exhibited high in vitro MIC values to ketoconazole.

Keywords

OtomycosisBlack aspergilliMolecular identificationAntifungal agents

Copyright information

© Springer Science+Business Media B.V. 2012