Articles producció científica> Ciències Mèdiques Bàsiques

Clinical and Laboratory Development of Echinocandin Resistance in Candida glabrata: Molecular Characterization

  • Identification data

    Identifier: imarina:5873594
    Authors:
    Rivero-Menendez O, Navarro-Rodriguez P, Bernal-Martinez L, Martin-Cano G, Lopez-Perez L, Sanchez-Romero I, Perez-Ayala A, Capilla J, Zaragoza O, Alastruey-Izquierdo A
    Abstract:
    The pathogenic yeast Candida glabrata has become a public health issue due to the increasing number of echinocandin resistant clinical strains reported. In this study, acquisition and development of resistance to this antifungal class were studied in serial C. glabrata isolates from five patients admitted in two Spanish hospitals with a resistant profile against echinocandins associated with different mutations in hot-spot 1 of FKS2 gene. For two of these patients susceptible FKS wild-type isolates obtained prior to resistant ones were also investigated. Isolates were genotyped using multilocus sequence typing and microsatellite length polymorphism techniques, which yielded comparable results. Susceptible and resistant isolates from the same patient had the same genotype, being sequence type (ST) 3 the most prevalent among them. Isolates with different FKS mutations but the same ST were present in the same patient. MSH2 gene alterations were also studied to investigate their correlation with antifungal resistance acquisition but no association was found with antifungal resistance nor with specific genotypes. In vitro exposure to increasing concentrations of micafungin to susceptible isolates developed colonies carrying FKS mutations in agar plates containing a minimum concentration of 0.06 mg/L of micafungin after less than 48 h of exposure. We investigated the correlation between development of resistance and genotype in a set of susceptible strains after being in vitro exposed to micafungin and anidulafungin but no correlation was found. Mutant prevention concentration values and spontaneous growth frequencies after selection with both echinocandins were statistically similar, although FKS mutant colonies were more abundant after micafungin exposure (p < 0.001). Mutat
  • Others:

    Author, as appears in the article.: Rivero-Menendez O, Navarro-Rodriguez P, Bernal-Martinez L, Martin-Cano G, Lopez-Perez L, Sanchez-Romero I, Perez-Ayala A, Capilla J, Zaragoza O, Alastruey-Izquierdo A
    Department: Ciències Mèdiques Bàsiques
    URV's Author/s: Capilla Luque, Javier / NAVARRO RODRÍGUEZ, PATRICIA
    Keywords: Susceptibility Prolonged therapy Msh2 Micafungin Mic values Invasive candidiasis Global collection Genotyping Fks mutations Fks Echinocandins Caspofungin Candida glabrata Blood-stream Antifungal resistance Antifungal drug-resistance Anidulafungin Amphotericin-b
    Abstract: The pathogenic yeast Candida glabrata has become a public health issue due to the increasing number of echinocandin resistant clinical strains reported. In this study, acquisition and development of resistance to this antifungal class were studied in serial C. glabrata isolates from five patients admitted in two Spanish hospitals with a resistant profile against echinocandins associated with different mutations in hot-spot 1 of FKS2 gene. For two of these patients susceptible FKS wild-type isolates obtained prior to resistant ones were also investigated. Isolates were genotyped using multilocus sequence typing and microsatellite length polymorphism techniques, which yielded comparable results. Susceptible and resistant isolates from the same patient had the same genotype, being sequence type (ST) 3 the most prevalent among them. Isolates with different FKS mutations but the same ST were present in the same patient. MSH2 gene alterations were also studied to investigate their correlation with antifungal resistance acquisition but no association was found with antifungal resistance nor with specific genotypes. In vitro exposure to increasing concentrations of micafungin to susceptible isolates developed colonies carrying FKS mutations in agar plates containing a minimum concentration of 0.06 mg/L of micafungin after less than 48 h of exposure. We investigated the correlation between development of resistance and genotype in a set of susceptible strains after being in vitro exposed to micafungin and anidulafungin but no correlation was found. Mutant prevention concentration values and spontaneous growth frequencies after selection with both echinocandins were statistically similar, although FKS mutant colonies were more abundant after micafungin exposure (p < 0.001). Mutation S663P and F659 deletion were the most common ones found after selection with both echinocandins.
    Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Nutrição Microbiology (medical) Microbiology Medicina veterinaria Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geografía Geociências Farmacia Ensino Engenharias iii Engenharias ii Engenharias i Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1664302X
    Author's mail: javier.capilla@urv.cat
    Author identifier: 0000-0002-0765-6403
    Record's date: 2024-11-16
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.frontiersin.org/articles/10.3389/fmicb.2019.01585/full
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Frontiers In Microbiology. 10 (JULY): 1585-1585
    APA: Rivero-Menendez O, Navarro-Rodriguez P, Bernal-Martinez L, Martin-Cano G, Lopez-Perez L, Sanchez-Romero I, Perez-Ayala A, Capilla J, Zaragoza O, Alast (2019). Clinical and Laboratory Development of Echinocandin Resistance in Candida glabrata: Molecular Characterization. Frontiers In Microbiology, 10(JULY), 1585-1585. DOI: 10.3389/fmicb.2019.01585
    Article's DOI: 10.3389/fmicb.2019.01585
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2019
    Publication Type: Journal Publications
  • Keywords:

    Microbiology,Microbiology (Medical)
    Susceptibility
    Prolonged therapy
    Msh2
    Micafungin
    Mic values
    Invasive candidiasis
    Global collection
    Genotyping
    Fks mutations
    Fks
    Echinocandins
    Caspofungin
    Candida glabrata
    Blood-stream
    Antifungal resistance
    Antifungal drug-resistance
    Anidulafungin
    Amphotericin-b
    Zootecnia / recursos pesqueiros
    Saúde coletiva
    Química
    Odontología
    Nutrição
    Microbiology (medical)
    Microbiology
    Medicina veterinaria
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geografía
    Geociências
    Farmacia
    Ensino
    Engenharias iii
    Engenharias ii
    Engenharias i
    Economia
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Biodiversidade
    Astronomia / física
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