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Live Imaging of Antifungal Activity by Human Primary Neutrophils and Monocytes in Response to A. fumigatus
12:29

Live Imaging of Antifungal Activity by Human Primary Neutrophils and Monocytes in Response to A. fumigatus

Published on: April 19, 2017

Interaction of platelets and anidulafungin against Aspergillus fumigatus

Susanne Perkhofer1, Barbara Striessnig, Bettina Sartori

  • 1University of Applied Sciences Tyrol, Innsbruck, Austria. Susanne.Perkhofer@fhg-tirol.ac.at

Antimicrobial Agents and Chemotherapy
|November 2, 2012
PubMed

Insights

Human platelets combined with anidulafungin effectively inhibited Aspergillus fumigatus growth by reducing germination and hyphal elongation. This combination also decreased fks gene expression, suggesting a novel antifungal defense strategy.

Area of Science:

  • Mycology
  • Immunology
  • Pharmacology

Background:

  • Aspergillus fumigatus is an opportunistic fungal pathogen causing significant morbidity and mortality.
  • Anidulafungin is an echinocandin antifungal agent targeting fungal cell wall synthesis.
  • The role of human platelets in antifungal immunity is not fully understood.

Purpose of the Study:

  • To investigate the combined effect of human platelets and anidulafungin against Aspergillus fumigatus.
  • To explore the impact of this combination on fungal growth and gene expression.

Main Methods:

  • In vitro assays were performed to assess fungal germination and hyphal elongation.
  • Quantitative analysis of fks gene expression in Aspergillus fumigatus was conducted.
  • Comparisons were made between treatment groups: platelets + anidulafungin, anidulafungin alone, and untreated control.

Main Results:

  • The combination of platelets and anidulafungin (0.03 μg/ml) significantly reduced Aspergillus fumigatus germination and hyphal elongation (P < 0.05).
  • Platelets significantly decreased the expression of the fks gene, crucial for fungal cell wall synthesis.
  • Anidulafungin alone or untreated controls showed less significant effects on fungal growth and gene expression.

Conclusions:

  • Human platelets potentiate the antifungal activity of anidulafungin against Aspergillus fumigatus.
  • The observed synergy may involve the downregulation of the fks gene by platelets.
  • This combination therapy presents a potential novel strategy for managing invasive aspergillosis.

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