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Related Experiment Videos

Candida albicans strain delineation.

W G Merz1

  • 1Department of Laboratory Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland 21205.

Clinical Microbiology Reviews
|October 1, 1990
PubMed
Summary
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Accurate strain typing for Candida albicans is crucial for understanding infections. Genotyping methods offer improved discrimination and reproducibility over traditional phenotypic methods for epidemiologic studies.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Medical Mycology

Background:

  • Candida albicans is a significant opportunistic pathogen responsible for various human diseases.
  • Existing phenotypic methods for strain delineation (e.g., morphotyping, serotyping, antibiogram) have limitations in accuracy and reproducibility.
  • While virulence factors are known, rapid clinical quantification remains a challenge.

Purpose of the Study:

  • To review and compare phenotypic and genotypic methods for Candida albicans strain delineation.
  • To highlight the need for improved typing systems for virulence assessment and epidemiological studies.
  • To emphasize the potential of DNA-based genotyping for advancing research on Candida albicans pathogenesis.

Main Methods:

  • Review of established phenotypic typing techniques: morphotyping, serotyping, antibiogram, biotyping, enzyme profiles, etc.

Related Experiment Videos

  • Introduction of genotypic methods: electrophoretic karyotyping, restriction enzyme fragment length polymorphisms (RELP).
  • Discussion of limitations: discriminatory power, reproducibility, and clinical applicability.

    • Main Results:

    • Phenotypic methods, except morphotyping, generally lack correlation with pathogenic potential.
    • Epidemiological insights from phenotypic typing suggest endogenous infections and single-strain colonization.
    • Genotypic methods show promise for higher discriminatory power and inter-laboratory reproducibility.

    Conclusions:

    • Current phenotypic typing methods for Candida albicans have limitations in accuracy and reproducibility.
    • Genotyping techniques, based on DNA differences, offer superior discriminatory power for strain delineation.
    • Development of computer-assisted genotypic analysis will enhance understanding of Candida albicans pathogenesis and epidemiology.