Mechanisms of Acquired In Vivo and In Vitro Resistance to Voriconazole by Candida krusei following Exposure to Suboptimal Drug Concentration

Data de publicação:

Autores da FMUP

  • Elisabete Travassos Araújo Ricardo

    Autor

  • Isabel Alexandra Marcos Miranda

    Autor

  • Acácio Agostinho Gonçalves Rodrigues

    Autor

  • Cidália Irene Azevedo Pina Vaz

    Autor

Participantes de fora da FMUP

  • Grenouillet, F
  • Silva, RM
  • Eglin, G
  • Devillard, N

Unidades de investigação

Abstract

Five Candida krusei isolates (susceptible and resistant) recovered from the urine of a kidney transplant patient treated with voriconazole (VRC) 200 mg twice daily for 20 days were studied. Eight unrelated clinical isolates of C. krusei were exposed in vitro to VRC 0.001 mu g/ml for 30 days. Development of VRC transient resistance occurred in vivo, and induction of permanent resistance occurred in vitro. Mostly, ABC1 and ERG11 genes were overexpressed, and a homozygous T418C mutation in the ERG11 gene was found.

Dados da publicação

ISSN/ISSNe:
1098-6596, 0066-4804

Antimicrobial Agents and Chemotherapy  American Society for Microbiology

Tipo:
Article
Páginas:
-
Link para outro recurso:
www.scopus.com

Citações Recebidas na Web of Science: 5

Citações Recebidas na Scopus: 8

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Keywords

  • Candida krusei; underexposure to antifungal drugs; mechanisms of antifungal resistance; ABC1 ABC2 efflux pump genes; ERG11 gene mutations; candiduria; voriconazole; candidiasis

Financiamento

Proyectos asociados

Emergence of multidrug cross-resistance between agricultural and human antifungals in clinically relevant species of Aspergillus and Candida

Investigador Principal: Acácio Agostinho Gonçalves Rodrigues

Estudo Clínico Académico . 2019

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