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Isolation and Selection of Entomopathogenic Fungi from Soil Samples and Evaluation of Fungal Virulence against Insect Pests
Published on: September 28, 2021
Diagnostic methods for fungal infections in pediatric patients: microbiological, serological and molecular methods
1Eskisehir Osmangazi University Medical Faculty, Department of Microbiology, Division of Mycology, Eskisehir, Turkey. dryaseminoz@gmail.com
Abstract:
Although invasive fungal infections (IFIs) are relatively rare, they are important causes of morbidity and mortality in immunocompromised pediatric patients. Early and precise diagnosis of IFI is important to allow antifungal treatment to be started in time and to reduce the unnecessary use of toxic antifungal agents. Although traditional approaches such as direct microscopic examination, histopathological evaluation and cultivation are still gold standard, the diagnosis of IFI is generally difficult because of inadequate sensitivity and specificity with these tests. Commercial systems detecting the Aspergillus cell wall antigen galactomannan and 1,3-β-D-glucan are seen as the most convenient nonculture methods for the diagnosis of the IFI and monitoring of antifungal treatment. Several molecular methods have been described for the diagnosis of opportunistic mycoses. However, they have not been standardized and have only been used in experimental studies.
Insights
Diagnosing invasive fungal infections (IFIs) in immunocompromised children is challenging. Current non-culture methods like galactomannan and 1,3-β-D-glucan offer convenience, but molecular methods require standardization for wider use.
Area of Science:
- Pediatric Infectious Diseases
- Mycology
- Diagnostic Microbiology
Background:
- Invasive fungal infections (IFIs) are significant causes of illness and death in immunocompromised children.
- Accurate and timely diagnosis of IFIs is crucial for effective antifungal treatment and minimizing toxicity.
- Traditional diagnostic methods (microscopy, histology, culture) often lack sufficient sensitivity and specificity.
Purpose of the Study:
- To review current diagnostic approaches for IFIs in pediatric patients.
- To evaluate the utility of non-culture based diagnostic methods.
- To discuss the potential and limitations of molecular diagnostic techniques.
Main Methods:
- Review of existing literature on IFI diagnostics in pediatric populations.
- Analysis of performance characteristics for antigen detection assays (galactomannan, 1,3-β-D-glucan).
- Assessment of molecular diagnostic strategies for opportunistic mycoses.
Main Results:
- Non-culture methods, including galactomannan and 1,3-β-D-glucan detection, are practical for IFI diagnosis and treatment monitoring.
- Despite limitations, traditional methods remain a gold standard.
- Molecular diagnostic methods show promise but are not yet standardized for clinical use.
Conclusions:
- Improved diagnostic tools are needed for IFIs in immunocompromised children.
- Commercial antigen detection assays offer a viable alternative to traditional methods.
- Further research and standardization are required for molecular diagnostics to be integrated into routine clinical practice.
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