Articles producció científica> Ciències Mèdiques Bàsiques

Scedosporium spp. from Clinical Setting in Argentina, with the Proposal of the New Pathogenic Species Scedosporium americanum

  • Datos identificativos

    Identificador: imarina:9187098
    Autores:
    Abrantes, Ruben A.Refojo, NicolasHevia, Alejandra I.Fernandez, JulianIsla, GuillerminaCordoba, SusanaDavalos, Maria F.Lubovich, SilvinaMaldonado, IvanaDavel, Graciela O.Stchigel, Alberto M.
    Resumen:
    Species of the genus Scedosporium (family Microascaceae, phylum Ascomycota) are responsible for a wide range of opportunistic human infections, and have a low susceptibility to most antifungal drugs. It is well known that the pattern of Scedosporium species distribution varies according to geographic region. To assess the diversity of Scedosporium species in Argentina involved in human infections, we carried out a retrospective study reviewing 49 strains from clinical samples sent for diagnosis to the National Clinical Mycology Reference Laboratory between 1985 and 2019. Then, a phenotypic characterization, a phylogenetic study and and in vitro susceptibility test to antifungals were carried out. An analysis of combined nucleotide sequences dataset of the internal transcribed spacer of the ribosomal DNA (ITS) and of a fragment of the beta-tubulin gene (BT2) demonstrated that 92% of the strains belonged to the species S. boydii, S. apiospermum and S. angustum, all them pertaining to S. apiospermum species complex. However, two strains (4%) were identified as S. aurantiacum, a species never reported in clinical settings in the Americas'. Surprisingly, one of them displayed a polycytella-like conidiogenesis, up to date only reported for S. apiospermum. In addition, the strain DMic 165285 was phylogenetically located far away from the rest of the species, so is proposed as the novel species Scedosporium americanum. On the other hand, from all seven antifungals tested, voriconazole and posaconazole were the most active drugs against Scedosporium spp.
  • Otros:

    Autor según el artículo: Abrantes, Ruben A.; Refojo, Nicolas; Hevia, Alejandra I.; Fernandez, Julian; Isla, Guillermina; Cordoba, Susana; Davalos, Maria F.; Lubovich, Silvina; Maldonado, Ivana; Davel, Graciela O.; Stchigel, Alberto M.;
    Departamento: Ciències Mèdiques Bàsiques
    Autor/es de la URV: Stchigel Glikman, Alberto Miguel
    Palabras clave: Scedosporium Phylogeny Microascales Dna sequencing Antifungal susceptibility
    Resumen: Species of the genus Scedosporium (family Microascaceae, phylum Ascomycota) are responsible for a wide range of opportunistic human infections, and have a low susceptibility to most antifungal drugs. It is well known that the pattern of Scedosporium species distribution varies according to geographic region. To assess the diversity of Scedosporium species in Argentina involved in human infections, we carried out a retrospective study reviewing 49 strains from clinical samples sent for diagnosis to the National Clinical Mycology Reference Laboratory between 1985 and 2019. Then, a phenotypic characterization, a phylogenetic study and and in vitro susceptibility test to antifungals were carried out. An analysis of combined nucleotide sequences dataset of the internal transcribed spacer of the ribosomal DNA (ITS) and of a fragment of the beta-tubulin gene (BT2) demonstrated that 92% of the strains belonged to the species S. boydii, S. apiospermum and S. angustum, all them pertaining to S. apiospermum species complex. However, two strains (4%) were identified as S. aurantiacum, a species never reported in clinical settings in the Americas'. Surprisingly, one of them displayed a polycytella-like conidiogenesis, up to date only reported for S. apiospermum. In addition, the strain DMic 165285 was phylogenetically located far away from the rest of the species, so is proposed as the novel species Scedosporium americanum. On the other hand, from all seven antifungals tested, voriconazole and posaconazole were the most active drugs against Scedosporium spp.
    Áreas temáticas: Plant science Mycology Microbiology (medical) Microbiology Farmacia Ecology, evolution, behavior and systematics Ciências biológicas iii Ciências biológicas ii
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: albertomiguel.stchigel@urv.cat
    Identificador del autor: 0000-0003-3987-7996
    Fecha de alta del registro: 2024-07-27
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.mdpi.com/2309-608X/7/3/160
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: J Fungi (Basel). 7 (3): 1-16
    Referencia de l'ítem segons les normes APA: Abrantes, Ruben A.; Refojo, Nicolas; Hevia, Alejandra I.; Fernandez, Julian; Isla, Guillermina; Cordoba, Susana; Davalos, Maria F.; Lubovich, Silvina; (2021). Scedosporium spp. from Clinical Setting in Argentina, with the Proposal of the New Pathogenic Species Scedosporium americanum. J Fungi (Basel), 7(3), 1-16. DOI: 10.3390/jof7030160
    DOI del artículo: 10.3390/jof7030160
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2021
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Ecology, Evolution, Behavior and Systematics,Microbiology,Microbiology (Medical),Mycology,Plant Science
    Scedosporium
    Phylogeny
    Microascales
    Dna sequencing
    Antifungal susceptibility
    Plant science
    Mycology
    Microbiology (medical)
    Microbiology
    Farmacia
    Ecology, evolution, behavior and systematics
    Ciências biológicas iii
    Ciências biológicas ii
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