ArticleJundishapur journal of microbiology2015
Use of Padlock Probes and Rolling Circle Amplification (RCA) for Rapid Identification of Trichophyton Species, Related to Human and Animal Disorder.
Article in Jundishapur journal of microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- New Molecular Markers Distinguishing Fonsecaea Agents of Chromoblastomycosis.Mycopathologia · 2019Article
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5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThe high degree of phenotypic similarity among Trichophyton species makes their identification difficult.
objectivesThe current study aims to establish the use of rolling circle amplification (RCA) based on internal transcribed spacer ribosomal DNA (ITS rDNA) as a powerful, simple, and rapid procedure for distinguishing closely related organisms, and specifically to identify Trichophyton species, which cause human and animal disorders. MATERIALS AND
methodsA total of sixty-one isolates belonging to three species of Trichophyton were identified to the species level based on microscopic and macroscopic examinations and their ITS rDNA regions were sequenced. Three specific circular oligonucleotide probes targeting the ITS1 and ITS2 regions were designed to differentiate Trichophyton rubrum, T. mentagrophytes, and T. tonsurans.
resultsOf the 61 putative Trichophyton clinical isolates, 52 were identified to the species level. The most common species was T. mentagrophytes var. interdigitale (31 isolates), followed by T. rubrum (11 isolates), T. tonsurans (9 isolates), and T. violaceum (1 isolates); moreover, 9 isolates were identified as non-Trichophyton species. The RCA method correctly identified four Trichophyton species and was 100% specific for each species. Neither cross-reaction between the examined species of Trichophyton nor false positive or false negative results were observed.
conclusionsSpecies identification of Trichophyton is crucially important for epidemiological and phylogenetic purposes and for genotype delineation. RCA based on ITS polymorphisms can be used to generate identification barcodes and as an alternative to DNA sequencing; it is a very fast, specific, and economical tool for species identification.
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