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Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species

PURPOSE: Fungi of Scopulariopsis and Microascus genera cause a wide range of infections, with S. brevicaulis being the most prevalent aetiological agent of mould onychomycosis. Proper identification of these pathogens requires sporulating culture, which considerably delays the diagnosis. So far, seq...

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Autores principales: Kordalewska, Milena, Jagielski, Tomasz, Brillowska-Dąbrowska, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4937093/
https://www.ncbi.nlm.nih.gov/pubmed/27255522
http://dx.doi.org/10.1007/s11046-016-0008-5
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author Kordalewska, Milena
Jagielski, Tomasz
Brillowska-Dąbrowska, Anna
author_facet Kordalewska, Milena
Jagielski, Tomasz
Brillowska-Dąbrowska, Anna
author_sort Kordalewska, Milena
collection PubMed
description PURPOSE: Fungi of Scopulariopsis and Microascus genera cause a wide range of infections, with S. brevicaulis being the most prevalent aetiological agent of mould onychomycosis. Proper identification of these pathogens requires sporulating culture, which considerably delays the diagnosis. So far, sequencing of rDNA regions of clinical isolates has produced ambiguous results due to the lack of reference sequences in publicly available databases. Thus, there is a clear need for the development of new molecular methods that would provide simple, rapid and highly specific identification of Scopulariopsis and Microascus species. The objective of this study was to develop simple and fast assays based on PCR and real-time PCR for specific detection of fungi from Scopulariopsis and Microascus genera, and separately, S. brevicaulis species. METHODS: On the basis of alignment of β-tubulin gene sequences, Microascus/Scopulariopsis-specific primers were designed and S. brevicaulis-specific primers were reevaluated. DNA from cultured fungal isolates, extracted in a two-step procedure, was used in Microascus/Scopulariopsis-specific and S. brevicaulis-specific PCR and real-time PCR followed by electrophoresis or melting temperature analysis, respectively. RESULTS: The specificity of the assays was confirmed, as positive results were obtained only for Scopulariopsis spp. and Microascus spp. isolates tested in Microascus/Scopulariopsis-specific assay, and only for S. brevicaulis and S. koningii (syn. S. brevicaulis) isolates in a S. brevicaulis-specific assay, respectively, and no positive results were obtained neither for other moulds, dermatophytes, yeast-like fungi, nor for human DNA. CONCLUSIONS: The developed assays enable fast and unambiguous identification of Microascus spp. and Scopulariopsis spp. pathogens.
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spelling pubmed-49370932016-07-19 Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species Kordalewska, Milena Jagielski, Tomasz Brillowska-Dąbrowska, Anna Mycopathologia Article PURPOSE: Fungi of Scopulariopsis and Microascus genera cause a wide range of infections, with S. brevicaulis being the most prevalent aetiological agent of mould onychomycosis. Proper identification of these pathogens requires sporulating culture, which considerably delays the diagnosis. So far, sequencing of rDNA regions of clinical isolates has produced ambiguous results due to the lack of reference sequences in publicly available databases. Thus, there is a clear need for the development of new molecular methods that would provide simple, rapid and highly specific identification of Scopulariopsis and Microascus species. The objective of this study was to develop simple and fast assays based on PCR and real-time PCR for specific detection of fungi from Scopulariopsis and Microascus genera, and separately, S. brevicaulis species. METHODS: On the basis of alignment of β-tubulin gene sequences, Microascus/Scopulariopsis-specific primers were designed and S. brevicaulis-specific primers were reevaluated. DNA from cultured fungal isolates, extracted in a two-step procedure, was used in Microascus/Scopulariopsis-specific and S. brevicaulis-specific PCR and real-time PCR followed by electrophoresis or melting temperature analysis, respectively. RESULTS: The specificity of the assays was confirmed, as positive results were obtained only for Scopulariopsis spp. and Microascus spp. isolates tested in Microascus/Scopulariopsis-specific assay, and only for S. brevicaulis and S. koningii (syn. S. brevicaulis) isolates in a S. brevicaulis-specific assay, respectively, and no positive results were obtained neither for other moulds, dermatophytes, yeast-like fungi, nor for human DNA. CONCLUSIONS: The developed assays enable fast and unambiguous identification of Microascus spp. and Scopulariopsis spp. pathogens. Springer Netherlands 2016-06-02 2016 /pmc/articles/PMC4937093/ /pubmed/27255522 http://dx.doi.org/10.1007/s11046-016-0008-5 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Kordalewska, Milena
Jagielski, Tomasz
Brillowska-Dąbrowska, Anna
Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title_full Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title_fullStr Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title_full_unstemmed Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title_short Rapid Assays for Specific Detection of Fungi of Scopulariopsis and Microascus Genera and Scopulariopsis brevicaulis Species
title_sort rapid assays for specific detection of fungi of scopulariopsis and microascus genera and scopulariopsis brevicaulis species
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4937093/
https://www.ncbi.nlm.nih.gov/pubmed/27255522
http://dx.doi.org/10.1007/s11046-016-0008-5
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