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Related Experiment Videos

Multilocus enzyme typing of Cryptococcus neoformans

M E Brandt1, S L Bragg, R W Pinner

  • 1Emerging Bacterial and Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, Georgia 30333.

Journal of Clinical Microbiology
|October 1, 1993
PubMed
Summary

Multilocus enzyme electrophoresis effectively subtypes Cryptococcus neoformans varieties. This molecular method aids in distinguishing strains for improved classification and epidemiological studies of fungal infections.

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Area of Science:

  • Medical Mycology
  • Molecular Biology
  • Infectious Diseases

Background:

  • Cryptococcus neoformans is a significant fungal pathogen.
  • Accurate subtyping is crucial for understanding its epidemiology and pathogenesis.
  • Current classification methods may require complementary techniques.

Purpose of the Study:

  • To adapt and evaluate multilocus enzyme electrophoresis (MLEE) for subtyping Cryptococcus neoformans.
  • To assess the discriminatory power of MLEE for differentiating between cryptococcal varieties and serotypes.

Main Methods:

  • Multilocus enzyme electrophoresis was employed to analyze enzyme profiles of Cryptococcus neoformans isolates.
  • Isolates were categorized based on variety (neoformans and gattii) and serotype.

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Main Results:

  • MLEE clearly distinguished the two main varieties of Cryptococcus neoformans.
  • Isolates of Cryptococcus neoformans var. neoformans were further sorted into four to five subtypes within each serotype.
  • Nearly all isolates of Cryptococcus neoformans var. gattii exhibited unique enzyme electrophoretic types, indicating high genetic diversity.

Conclusions:

  • Multilocus enzyme electrophoresis is a valuable tool for subtyping Cryptococcus neoformans.
  • This method can enhance current classification systems for Cryptococcus neoformans.
  • MLEE provides a robust approach for epidemiological investigations of cryptococcal infections.