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Journal of Clinical Microbiology, 08 1995, 2216-2219, Vol 33, No. 8
Copyright © 1995 by the American Society for Microbiology. All rights reserved.

Comparison of arbitrarily primed PCR and macrorestriction (pulsed-field gel electrophoresis) typing of Pseudomonas aeruginosa strains from cystic fibrosis patients

D Kersulyte, MJ Struelens, A Deplano and DE Berg
Department of Molecular Microbiology, Washington University Medical School, St. Louis, Missouri 63110, USA.

Arbitrarily primed PCR fingerprinting was carried out on 43 Pseudomonas aeruginosa isolates from cystic fibrosis (CF) patients. Seventeen major groups of strains that coincided with groups also distinguished by macrorestriction (pulsed-field gel electrophoresis) typing were identified. Our results illustrated that a CF patient can carry more than one strain and can carry a given strain for long periods of time and that strains can evolve by changes in drug resistance or other phenotypic traits during long-term colonization. The arbitrarily primed PCR method is recommended for first-pass screening of P. aeruginosa isolates from CF patients, especially when many strains are to be typed, because of its sensitivity and efficiency.

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