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[Methodologic problems in the detection of indole formation by anaerobic pathogens]
1Institut für Mikrobiologie, Bereiches Medizin der Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, DDR.
Zentralblatt Fur Bakteriologie, Mikrobiologie, Und Hygiene. Series A, Medical Microbiology, Infectious Diseases, Virology, Parasitology
|July 1, 1987
Summary
The indole test is crucial for identifying pathogenic anaerobes. Avoid false negatives by using adequate buffering and omitting fermentable carbohydrates, ensuring accurate results.
Area of Science:
- Microbiology
- Clinical Diagnostics
Context:
- Accurate identification of pathogenic anaerobes is vital for effective treatment.
- The indole test is a key diagnostic method for anaerobic bacteria.
- False-negative indole test results can occur due to pH reduction from fermentable carbohydrates.
Purpose:
- To optimize the indole test for reliable detection of pathogenic anaerobes.
- To prevent false-negative results in indole testing.
- To introduce a rapid, buffered tryptophan solution test for improved accuracy.
Summary:
- Pathogenic anaerobe identification relies on the indole test.
- Fermentable carbohydrates lower pH, causing false-negative indole test results.
- Optimized indole testing requires adequate buffering and exclusion of fermentable carbohydrates.
- A rapid test using buffered tryptophan solution reliably detects indole formation, avoiding false negatives without complex anaerobic methods.
Impact:
- Improves the accuracy of identifying pathogenic anaerobic bacteria.
- Reduces the risk of misdiagnosis and inappropriate treatment.
- Provides a simpler, more reliable alternative to traditional indole testing methods.
- Enhances clinical laboratory efficiency in anaerobic microbiology.