S. aureus PFGE patterns of lesional or non lesional strains from patients with impetigo: Association of individual bands with lesional or non lesional areas

E. Capoluongo, A. Giglio, M. Belardi, F. Leonetti, A. Giannetti, F. Ameglio

Research output: Contribution to journalArticle

Abstract

PFGE has been extensively used to obtain a reliable intra-species differentiation, although this technique has not been completely standardized. In this study, PFGE was applied to analyze in detail the patterns of 19 lesional S. aureus strains isolated from patients with impetigo, compared with 15 non-lesional strains isolated from nasal or pharyngeal swabs of the same patients. The strain DNA was extracted and processed as previously reported, using the strictest protocol to limit the variations between different analytical sets. To obtain maximum sensitivity and comparability, the electrophoresis patterns were analyzed by an automated and computerized reader (GelDoc1000). The DNA fragments (range 12-15 bands) obtained for each individual strain were then divided into 39 zones including from 1 to 4 bands for a total of at least 91 possible different gel positions. The positivity for each zone (and/or the positivity for the individual bands contained) was associated with the lesional/non-lesional origin and with the face localization of the strains.

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalNew Microbiologica
Volume23
Issue number1
Publication statusPublished - Jan 2000

Keywords

  • DNA size
  • Restriction pattern
  • S. Aureus

ASJC Scopus subject areas

  • Microbiology
  • Microbiology (medical)

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