Madurella real-time PCR, a novel approach for eumycetoma diagnosis.

The genus Madurella comprising four species, M. fahalii, M. mycetomatis, M. pseudomycetomatis, and M. tropicana, represents the prevalent cause of eumycetoma worldwide. The four species are phenotypically similar and cause an invariable clinical picture, but differ markedly in their susceptibility t...

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Main Authors: Amir Arastehfar, Wilson Lim, Farnaz Daneshnia, Wendy W J van de Sande, Ahmed H Fahal, Marie Desnos-Ollivier, Gerrit S de Hoog, Teun Boekhout, Sarah A Ahmed
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS Neglected Tropical Diseases
Online Access:https://doi.org/10.1371/journal.pntd.0007845
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author Amir Arastehfar
Wilson Lim
Farnaz Daneshnia
Wendy W J van de Sande
Ahmed H Fahal
Marie Desnos-Ollivier
Gerrit S de Hoog
Teun Boekhout
Sarah A Ahmed
author_facet Amir Arastehfar
Wilson Lim
Farnaz Daneshnia
Wendy W J van de Sande
Ahmed H Fahal
Marie Desnos-Ollivier
Gerrit S de Hoog
Teun Boekhout
Sarah A Ahmed
author_sort Amir Arastehfar
collection DOAJ
description The genus Madurella comprising four species, M. fahalii, M. mycetomatis, M. pseudomycetomatis, and M. tropicana, represents the prevalent cause of eumycetoma worldwide. The four species are phenotypically similar and cause an invariable clinical picture, but differ markedly in their susceptibility to antifungal drugs, and epidemiological pattern. Therefore, specific identification is required for optimal management of Madurella infection and to reveal proper epidemiology of the species. In this study, a novel multiplex real-time PCR targeting the four Madurella species was developed and standardized. Evaluation of the assay using reference strains of the target and non-target species resulted in 100% specificity, high analytical reproducibility (R2 values >0.99) and a lowest detection limit of 3 pg target DNA. The accuracy of the real-time PCR was further assessed using biopsies from eumycetoma suspected patients. Unlike culture and DNA sequencing as gold standard diagnostic methods, the real-time PCR yielded accurate diagnosis with specific identification of the causative species in three hours compared to one or two weeks required for culture. The novel method reduces turnaround time as well as labor intensity and high costs associated with current reference methods.
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spelling doaj.art-1e649db94212483d9dc32a3e88c587802022-12-21T18:39:17ZengPublic Library of Science (PLoS)PLoS Neglected Tropical Diseases1935-27271935-27352020-01-01141e000784510.1371/journal.pntd.0007845Madurella real-time PCR, a novel approach for eumycetoma diagnosis.Amir ArastehfarWilson LimFarnaz DaneshniaWendy W J van de SandeAhmed H FahalMarie Desnos-OllivierGerrit S de HoogTeun BoekhoutSarah A AhmedThe genus Madurella comprising four species, M. fahalii, M. mycetomatis, M. pseudomycetomatis, and M. tropicana, represents the prevalent cause of eumycetoma worldwide. The four species are phenotypically similar and cause an invariable clinical picture, but differ markedly in their susceptibility to antifungal drugs, and epidemiological pattern. Therefore, specific identification is required for optimal management of Madurella infection and to reveal proper epidemiology of the species. In this study, a novel multiplex real-time PCR targeting the four Madurella species was developed and standardized. Evaluation of the assay using reference strains of the target and non-target species resulted in 100% specificity, high analytical reproducibility (R2 values >0.99) and a lowest detection limit of 3 pg target DNA. The accuracy of the real-time PCR was further assessed using biopsies from eumycetoma suspected patients. Unlike culture and DNA sequencing as gold standard diagnostic methods, the real-time PCR yielded accurate diagnosis with specific identification of the causative species in three hours compared to one or two weeks required for culture. The novel method reduces turnaround time as well as labor intensity and high costs associated with current reference methods.https://doi.org/10.1371/journal.pntd.0007845
spellingShingle Amir Arastehfar
Wilson Lim
Farnaz Daneshnia
Wendy W J van de Sande
Ahmed H Fahal
Marie Desnos-Ollivier
Gerrit S de Hoog
Teun Boekhout
Sarah A Ahmed
Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
PLoS Neglected Tropical Diseases
title Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
title_full Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
title_fullStr Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
title_full_unstemmed Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
title_short Madurella real-time PCR, a novel approach for eumycetoma diagnosis.
title_sort madurella real time pcr a novel approach for eumycetoma diagnosis
url https://doi.org/10.1371/journal.pntd.0007845
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