In this study, we used traditional morphological and molecular identification methods to preliminarily identify two strains of dermatophytes. The two strains were observed under the microscope. And then the dermatophytes were cultured on Sabouraud's dextrose agar (SDA). The 18S rRNA regions of the two dermatophyte strains were amplified by polymerase chain reaction (PCR), and the PCR products were sequenced and compared with GenBank data. BLAST tools and DNAMAN software were used to analyze the sequences. To further determine highly homologous sequences, a phylogenetic tree was constructed using the Neighbor-Joining method. The two strains of dermatophytes were identified by traditional morphological identification as Epidermophyton floccosum and Microsporum ferrugineum. The 18S rRNA sequence analyses showed high similarities to Cladosporium cladosporioides isolate C115LM-UFPR and Ascomycete sp. LB68A1A2. Epidermophyton and Cladosporium belong to dermatophyte, while Microsporum ferrugineum and Ascomycete belong to microsporum. The two novel strains of dermatophytes were therefore identified as Cladosporium cladosporioides isolate C115LM-UFPR (JN650537, Cladosporium) and Ascomycete sp. LB68A1A2 (AY770409, Ascomycete sp).
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http://dx.doi.org/10.1007/s11596-013-1222-8 | DOI Listing |
Mycopathologia
January 2025
Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic.
The clinical diagnosis of dermatophytosis and identification of dermatophytes face challenges due to reliance on culture-based methods. Rapid, cost-effective detection techniques for volatile organic compounds (VOCs) have been developed for other microorganisms, but their application to dermatophytes is limited. This study explores using VOCs as diagnostic markers for dermatophytes.
View Article and Find Full Text PDFMycoses
January 2025
Department of Dermatology and Venereology, Peking University First Hospital, Beijing, China.
Background: Microsporum canis, a dermatophyte commonly associated with pets, is a leading cause of severe tinea capitis. The increasing prevalence of antifungal resistance among dermatophytes poses a significant global health challenge.
Objectives: This study aims to define the updated antifungal susceptibility profile of M.
Mycoses
January 2025
Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Background: Since 2017, dermatophytosis caused by the newly introduced species Trichophyton indotineae has gained new interest worldwide due to the rise in terbinafine resistance and difficulty in the treatment of recalcitrant infections. Distinguishing T. indotineae from other Trichophyton species based on morphological features is impossible and DNA sequencing is necessary for accurate identification.
View Article and Find Full Text PDFInt J Med Mushrooms
December 2024
Laboratory of Fungal Biology and Biotechnology, Yerevan State University, Yerevan, Armenia; Department of Cardiology, Clinic of General and Invasive Cardiology, University Hospital No. 1, Yerevan State Medical University, Yerevan, Armenia.
The study of antimicrobial activity (AMA) of 14 genetically identified dikaryotic strains of red belted medicinal polypore Fomitopsis pinicola isolated from Betula sp. and other deciduous trees, as well as conifers Picea sp. and Abies alba in Russia, France and Italy against test fungi and bacteria is discussed.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil.
Fungi can remarkably sense and adapt to various extracellular stimuli and stress conditions. Oxidative stress, which results from an imbalance between reactive oxygen species production and antioxidant defenses, leads to cellular damage and death. In , oxidative stress is managed by a complex antioxidant system, including thioredoxins, glutathione, catalases, peroxidases, and superoxide dismutase, with glutathione playing a crucial role.
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