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Updated: Jun 12, 2025
An Ex vivo Assay to Study Candida albicans Hyphal Morphogenesis in the Gastrointestinal Tract
Published on: July 1, 2020
Invasive Candida in the abdomen: how to differentiate infection from colonization
Corentin Deckers1, Isabel Montesinos1, Pierre Emmanuel Plum2
1Laboratory Medicine - Microbiology, CHU UCL Namur, Yvoir, Belgium.
Introduction:
Intra-abdominal candidiasis (IAC) is a serious complication in critically ill patients, particularly after abdominal surgery or trauma. Differentiating Candida colonization from invasive infection is crucial, as misdiagnosis can lead to inappropriate antifungal use, increased resistance, and worse outcomes. However, IAC remains underrecognized due to the limitations of conventional culture-based diagnostics. Relevant literature was identified through a non-systematic search of the PubMed database.
Areas Covered:
This review highlights the challenges in diagnosing and managing IAC, focusing on the limitations of traditional culture methods and the potential of non-culture-based diagnostics. Biomarkers such as 1-3-β-D-glucan (BDG) and Candida albicans germ tube antibody (CAGTA), along with molecular assays, improve diagnostic accuracy but have varying sensitivity and specificity, requiring a multimodal approach. Management involves early diagnosis, source control, and targeted antifungal therapy. Current guidelines, largely based on candidemia, recommend echinocandins as first-line therapy, with fluconazole for stable patients and amphotericin B for resistant strains.
Expert Opinion:
Despite advances, IAC-specific research is lacking, necessitating improved diagnostic tools and tailored therapies. There is a need for more targeted studies to refine diagnostic algorithms and therapeutic strategies. Future efforts should focus on developing rapid, high-sensitivity and specific diagnostic tools, optimizing antifungal stewardship, and individualizing treatment approaches.
Insights
Diagnosing intra-abdominal candidiasis (IAC) is challenging due to unreliable cultures. Novel biomarkers and molecular tests offer improved accuracy, but a multimodal approach is essential for effective patient management and better outcomes.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Medical Diagnostics
Background:
- Intra-abdominal candidiasis (IAC) is a severe complication in critically ill patients, often following surgery or trauma.
- Accurate differentiation between Candida colonization and invasive infection is vital to prevent adverse outcomes and antimicrobial resistance.
- Current culture-based diagnostics for IAC are limited, leading to underdiagnosis and delayed treatment.
Purpose of the Study:
- To review the diagnostic and management challenges of IAC.
- To evaluate the limitations of traditional diagnostic methods and explore the potential of non-culture-based diagnostics.
- To highlight the need for improved diagnostic tools and tailored therapeutic strategies for IAC.
Main Methods:
- Non-systematic literature search of the PubMed database.
- Review of current diagnostic modalities, including culture-based and non-culture-based methods.
- Analysis of existing guidelines for IAC management.
Main Results:
- Traditional culture methods for IAC lack sensitivity and specificity.
- Biomarkers like 1-3-β-D-glucan (BDG) and Candida albicans germ tube antibody (CAGTA), along with molecular assays, enhance diagnostic accuracy but require careful interpretation.
- Current management guidelines are often extrapolated from candidemia data, necessitating IAC-specific research.
Conclusions:
- There is a critical need for more sensitive and specific diagnostic tools for IAC.
- A multimodal diagnostic approach is recommended to improve accuracy.
- Future research should focus on developing rapid diagnostics, optimizing antifungal stewardship, and personalizing treatment for IAC.
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