Aspergillus infections: problems in diagnosis and treatment

Area of Science:

• Mycology
• Infectious Diseases
• Immunocompromised Host

Background:

• Invasive aspergillosis is a frequent, serious infection in immunocompromised individuals, including oncology and transplant patients.
• Current diagnostic methods often require invasive tissue biopsy, delaying early detection and treatment.
• There is a critical need for sensitive and specific noninvasive diagnostic tools.

Purpose of the Study:

• To review recent advances in serodiagnostic tests for early invasive aspergillosis diagnosis.
• To evaluate the utility of anti-Aspergillus antibody detection versus antigen detection methods.
• To present findings from a novel inhibition enzyme-linked immunosorbent assay for Aspergillus antigen detection.

Main Methods:

• Review of literature on serodiagnostic tests for invasive aspergillosis.
• Evaluation of anti-Aspergillus antibody detection methods.
• Application and results analysis of an inhibition enzyme-linked immunosorbent assay (ELISA) for serum Aspergillus antigen detection in 35 patients.

Main Results:

• Anti-Aspergillus antibody detection is insufficient for early diagnosis.
• Methods detecting Aspergillus antigen in serum show potential for noninvasive early diagnosis.
• The inhibition ELISA demonstrated sensitivity in detecting Aspergillus antigen in patients with invasive aspergillosis.

Conclusions:

• Noninvasive serodiagnostic tests, particularly antigen detection, are crucial for early invasive aspergillosis diagnosis.
• Further evaluation of sensitive antigen detection assays like inhibition ELISA is warranted.
• Advances in diagnostics complement the review of current antifungal therapies.