Cited by 77Antifungal resistance and susceptibilityYeasts and Rust Fungi StudiesFungal Plant Pathogen Control

Posttreatment Antifungal Resistance among Colonizing Candida Isolates in Candidemia Patients: Results from a Systematic Multicenter Study

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Jensen, R. H., Johansen, H. K., Søes, L. M., Lemming, L. E., Rosenvinge, F. S., Nielsen, L., Olesen, B., Kristensen, L. +3 more·2016·Antimicrobial Agents and Chemotherapy

Abstract

The prevalence of intrinsic and acquired resistance among colonizing Candida isolates from patients after candidemia was investigated systematically in a 1-year nationwide study. Patients were treated at the discretion of the treating physician. Oral swabs were obtained after treatment. Species distributions and MIC data were investigated for blood and posttreatment oral isolates from patients exposed to either azoles or echinocandins for <7 or ≥ 7 days. Species identification was confirmed using matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and internal transcribed spacer (ITS) sequencing, susceptibility was examined by EUCAST EDef 7.2 methodology, echinocandin resistance was examined by FKS sequencing, and genetic relatedness was examined by multilocus sequence typing (MLST). One hundred ninety-three episodes provided 205 blood and 220 oral isolates. MLST analysis demonstrated a genetic relationship for 90% of all paired blood and oral isolates. Patients exposed to azoles for ≥ 7 days (n = 93) had a significantly larger proportion of species intrinsically less susceptible to azoles (particularly Candida glabrata) among oral isolates than among initial blood isolates (36.6% versus 12.9%; P < 0.001). A similar shift toward species less susceptible to echinocandins among 85 patients exposed to echinocandins for ≥ 7 days was not observed (4.8% of oral isolates versus 3.2% of blood isolates; P > 0.5). Acquired resistance in Candida albicans was rare (<5%). However, acquired resistance to fluconazole (29.4%; P < 0.05) and anidulafungin (21.6%; P < 0.05) was common in C. glabrata isolates from patients exposed to either azoles or echinocandins. Our findings suggest that the colonizing mucosal microbiota may be an unrecognized reservoir of resistant Candida species, especially C. glabrata, following treatment for candidemia. The resistance rates were high, raising concern in general for patients exposed to antifungal drugs.

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  • Prolonged administration of antifungal drugs for treatment and prevention is the primary cause of the emergence of resistant strains.

    “Moreover, Jensen et al. [82] supported the view that prolonged administration of antifungal drugs for treatment and prevention is the primary cause of the emergence of resistant strains.”

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  1. Enache-Angoulvant A, Bourget M, Brisse S, Stockman-Pannier C, Di- Posttreatment Antifungal Resistance March 2016 Volume 60 Number 3 aac.asm.org 1507 Antimicrobial Agents and Chemotherapy on August 17, 2017 by SYDDANSK UNIVERSITETSBIBLIOTEK http://aac.asm.org/ Downloaded from

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Authors
Jensen, R. H., Johansen, H. K., Søes, L. M., Lemming, L. E., Rosenvinge, F. S., Nielsen, L., Olesen, B., Kristensen, L., Dzajic, E., Astvad, K. M. T., & Arendrup, M. C.
Affiliations
  • Statens Serum Institut (DK)
  • Copenhagen University Hospital (DK)
  • Hvidovre Hospital (DK)
  • Aarhus University Hospital (DK)
  • Odense University Hospital (DK)
  • Herlev Hospital (DK)
  • Nordsjællands Hospital (DK)
  • Regionshospitalet Viborg (DK)
  • Hospital South West Jutland (DK)
Venue
Antimicrobial Agents and Chemotherapy
Published
2016-03
Volume
60
Issue
3
Pages
1500-1508
ISSN
  • 0066-4804 (ISSN-L)
  • 1098-6596
OpenAlex
W2216779599
Cited by
77
References
54
Citations by year
2026: 1 · 2025: 7 · 2024: 14 · 2023: 5 · 2022: 7 · 2021: 9 · 2020: 5 · 2019: 4 · 2018: 9 · 2017: 11 · 2016: 5
FWCI
6.50
Type
journal article
Language
en
Open access
Locations
  • Antimicrobial Agents and Chemotherapy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (publishedVersion, other-oa)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Gilead Sciences (IX-DK-131-0286)
  • European Society of Clinical Microbiology and Infectious Diseases (Research Grant 2013)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Yeasts and Rust Fungi Studies
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Fungal Plant Pathogen Control
Keywords
candidemia, antifungal resistance, Candida colonization, Candida glabrata, Candida albicans, azole resistance, echinocandin resistance, fluconazole resistance, mucosal microbiota, antifungal susceptibility, Candida species distribution
MeSH terms
Aged, Antifungal Agents, Candida, Denmark, Female, Humans, Male, Microbial Sensitivity Tests, Fluconazole, Drug Resistance, Fungal, Candidemia, Multilocus Sequence Typing

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