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Elastase production in clinical isolates of Aspergillus
J C Rhodes1, R B Bode, C M McCuan-Kirsch
1Department of Pathology and Laboratory Medicine, University of Cincinnati Medical Center, Ohio.
Diagnostic Microbiology and Infectious Disease
|July 1, 1988
Summary
This study found that all invasive Aspergillus aspergillosis cases produced elastase. However, elastase production does not always indicate invasive disease in patients.
Area of Science:
- Medical Mycology
- Clinical Microbiology
- Enzyme Activity in Fungi
Background:
- Aspergillus species are opportunistic fungal pathogens.
- Invasive aspergillosis poses a significant threat to immunocompromised patients.
- Diagnostic markers for invasive aspergillosis are crucial for timely treatment.
Purpose of the Study:
- To investigate the correlation between elastase activity in Aspergillus isolates and the development of invasive aspergillosis.
- To evaluate elastase production as a potential biomarker for invasive fungal infections.
Main Methods:
- Clinical isolates of Aspergillus species were analyzed for elastase activity.
- Rose bengal-elastin agar plates were utilized for elastase detection.
- Patient clinical records were retrospectively and prospectively reviewed to ascertain diagnoses, including invasive aspergillosis.
Main Results:
- All Aspergillus isolates confirmed to cause invasive aspergillosis demonstrated elastase activity.
- A subset of Aspergillus isolates producing elastase was not associated with invasive disease in patients.
- Elastase production is a common characteristic of invasive Aspergillus isolates.
Conclusions:
- Elastase activity is a sensitive indicator for invasive aspergillosis caused by Aspergillus species.
- Elastase production alone is not sufficient to diagnose invasive aspergillosis.
- Further research may explore the role of elastase in fungal pathogenesis and host-pathogen interactions.