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. 1991 May;29(5):962–967. doi: 10.1128/jcm.29.5.962-967.1991

Comparison of restriction enzyme analysis and pulsed-field gradient gel electrophoresis as typing systems for Candida albicans.

J A Vazquez 1, A Beckley 1, J D Sobel 1, M J Zervos 1
PMCID: PMC269916  PMID: 1647409

Abstract

Candida species are an important cause of infection in immunocompromised hosts and the leading cause of nosocomial fungal infections. Study of the epidemiology of Candida infection has been difficult because of lack of a reliable typing system. We describe a typing system utilizing contour-clamped homogeneous electric fields (CHEF), which is a modified version of pulsed-field gradient gel electrophoresis, and compared it with restriction enzyme analysis (REA) of genomic DNA. The study was done with 35 Candida albicans clinical isolates from separate patients. CHEF and REA were performed on each isolate, and the patterns were compared. The REA procedure revealed 17 strain types while the CHEF procedure was able to distinguish 23 strain types of C. albicans. The CHEF technique yields unique patterns of chromosomal bands that can be used to distinguish clinical isolates and demonstrates greater sensitivity than REA.

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Selected References

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