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09:52

Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis

Published on: March 9, 2018

A case of pulmonary aspergillosis with lack of response to caspofungin

Reinhard Rüchel1, Christine Perske, Bertram Glass

  • 1Department of Medical Microbiology, University Hospital of Göttingen, Göttingen, Germany. rrueche@gwdg.de

Revista Iberoamericana De Micologia
|July 21, 2006
PubMed

Insights

Caspofungin is recommended for invasive aspergillosis, but a lack of testing standards can lead to treatment failure. This case highlights the risk of fatal outcomes despite antifungal use.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Hematology

Background:

  • Invasive aspergillosis is a serious fungal infection, particularly in immunocompromised patients.
  • Caspofungin is a widely recommended antifungal agent for treating invasive aspergillosis.
  • Standardized susceptibility testing for Aspergillus species against caspofungin is lacking.

Observation:

  • A 55-year-old patient with leukemia underwent successful allogeneic hematopoietic stem cell transplantation (HSCT).
  • Eight months post-HSCT, the patient developed a fatal pulmonary aspergillosis infection.
  • The infection was resistant to caspofungin treatment.

Findings:

  • The case demonstrates a potential for therapy failure with caspofungin in invasive aspergillosis.
  • Lack of interpretative cut-off values for caspofungin susceptibility testing hinders effective treatment selection.
  • Aspergillus isolates can exhibit resistance to caspofungin, leading to poor clinical outcomes.

Implications:

  • There is a critical need for standardized caspofungin susceptibility testing methods for Aspergillus.
  • Clinical guidelines should address the management of invasive aspergillosis in HSCT recipients with potential antifungal resistance.
  • Further research is required to understand and overcome caspofungin resistance mechanisms in Aspergillus.

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