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Prevalence of Cryptococcus neoformans in clinical specimens
1Department of Physiology, Faculty of Medicine, Safárik University, 040 01 Kosice, Slovakia.
Folia Microbiologica
|May 12, 2001
Summary
This study identified Cryptococcus neoformans in 14 clinical cases using cultivation and biochemical tests. The fungus was found in both pediatric and adult patients, with a notable frequency in cerebrospinal fluid from meningitis cases.
Area of Science:
- Medical Mycology
- Clinical Microbiology
- Infectious Diseases
Background:
- Cryptococcus neoformans is an opportunistic fungal pathogen.
- Accurate identification is crucial for timely diagnosis and treatment of cryptococcosis.
- Various diagnostic methods exist, each with specific advantages.
Purpose of the Study:
- To identify Cryptococcus neoformans in clinical samples.
- To evaluate a combination of microbiological and biochemical methods for fungal identification.
- To determine the prevalence and source of C. neoformans in a patient cohort.
Main Methods:
- Fungal isolation and cultivation on Sabouraud glucose agar and CHROMagar Candida.
- Microscopic examination using Indian-ink-stained preparations.
- Biochemical profiling, including saccharide assimilation/fermentation, KNO3 assimilation, urease, and phenol monooxygenase production.
Main Results:
- Cryptococcus neoformans was identified in 14 clinical cases.
- The pathogen was detected in specimens from both pediatric (5 cases) and adult (9 cases) patients.
- Cerebrospinal fluid (liquor) from meningitis patients yielded the most frequent isolates (3 cases).
Conclusions:
- A combination of cultivation, microscopy, and biochemical testing effectively identifies Cryptococcus neoformans.
- The study highlights the presence of C. neoformans in diverse clinical materials across different age groups.
- Cerebrospinal fluid is a key specimen for diagnosing C. neoformans meningitis.