Analysis of the in vitro activity of human neutrophils against Aspergillus fumigatus in presence of antifungal and immunosuppressive agents

Med Mycol. 2018 Jun 1;56(4):514-519. doi: 10.1093/mmy/myx069.

Abstract

Neutrophils are essential in the first line defense against moulds. This in vitro study assessed different neutrophil effector mechanisms in the presence of clinically relevant antifungal and immunosuppressive agents. Therapeutic concentrations of liposomal amphotericin B led to reduced IL-8 and oxidative burst response to the synthetic stimulus PMA, whereas no major alterations of oxidative burst, phagocytosis, or cytokine response to germinated stages of Aspergillus fumigatus and no supra-additive effects of antifungal and immunosuppressive drugs were observed. Conventional and liposomal amphotericin B as well as voriconazole, however, led to reduced neutrophil extracellular trap formation in response to A. fumigatus germ tubes.

MeSH terms

  • Adult
  • Amphotericin B / pharmacology
  • Antifungal Agents / pharmacology*
  • Aspergillus fumigatus / drug effects
  • Aspergillus fumigatus / growth & development
  • Aspergillus fumigatus / immunology*
  • Cells, Cultured
  • Extracellular Traps / drug effects
  • Female
  • Humans
  • Immunosuppressive Agents / pharmacology*
  • Interleukin-8 / metabolism
  • Leukocyte Elastase / analysis
  • Male
  • Neutrophils / drug effects*
  • Neutrophils / physiology
  • Phagocytosis / drug effects
  • Prednisolone / pharmacology
  • Reactive Oxygen Species / analysis
  • Respiratory Burst / drug effects
  • Young Adult

Substances

  • Antifungal Agents
  • Immunosuppressive Agents
  • Interleukin-8
  • Reactive Oxygen Species
  • liposomal amphotericin B
  • Amphotericin B
  • Prednisolone
  • Leukocyte Elastase