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An Ex vivo Assay to Study Candida albicans Hyphal Morphogenesis in the Gastrointestinal Tract
Published on: July 1, 2020
Clinical significance of Candida species isolated from cerebrospinal fluid
Te-Li Chen1, Che-An Tsai, Chang-Phone Fung
1Section of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan, ROC.
Abstract:
Candida species have only rarely been isolated from the cerebrospinal fluid. Some of these isolates are true pathogens with a high morbidity and mortality, while others are only colonizers or contaminants. Spontaneous recovery from Candida meningitis has also been reported. The purpose of this study was to identify factors indicative of patients positive for Candida from cerebrospinal fluid who should receive antifungal therapy. A total of 36 patients with a positive cerebrospinal fluid culture for Candida were included in this retrospective analysis. Seventeen of these patients had received antifungal therapy under the impression of Candida meningitis. The differences in the case fatality rate and the duration of hospitalization between the antifungal treatment and untreated groups were statistically significant (p<0.04 and p<0.005, respectively). Statistical analysis showed a significant difference in the percentage of patients with previous ventricular shunt (14/17 vs 8/19, p<0.05), central venous line in situ (9/17 vs 1/19, p<0.005), multiple positive cerebrospinal fluid culture (11/17 vs 1/19, p<0.0005), isolation of Candida at least 20 days after hospitalization in adults (6/7 vs 1/13, p<0.005), and cerebrospinal fluid white blood cell count (median 77 vs 2 /mm3, p<0.005). These results suggest that antifungal agent should be initiated promptly in patients whose cerebrospinal fluid is positive for Candida and who have one or more of the identified risk factors.
Insights
Prompt antifungal therapy is crucial for patients with Candida in cerebrospinal fluid (CSF) and specific risk factors. Identifying these factors improves outcomes and reduces mortality in cases of Candida meningitis.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Clinical Microbiology
Background:
- Candida species in cerebrospinal fluid (CSF) are rare, with some isolates being pathogenic and others contaminants.
- Candida meningitis presents a high morbidity and mortality, though spontaneous recovery is possible.
Purpose of the Study:
- To identify factors predicting the need for antifungal therapy in patients with Candida-positive CSF cultures.
- To guide prompt treatment decisions for invasive candidiasis of the central nervous system.
Main Methods:
- Retrospective analysis of 36 patients with positive CSF cultures for Candida.
- Comparison of outcomes between patients who received antifungal therapy and those who did not.
Main Results:
- Antifungal therapy significantly reduced case fatality rates and hospitalization duration.
- Key risk factors for requiring antifungal treatment included: ventricular shunts, central venous lines, multiple positive CSF cultures, late Candida isolation (>20 days), and elevated CSF white blood cell counts.
Conclusions:
- Prompt initiation of antifungal agents is recommended for patients with Candida-positive CSF and identified risk factors.
- These findings aid in differentiating true Candida meningitis from colonization or contamination, optimizing patient management.
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