Molecular and epidemiological characterization of vaginal Saccharomyces cerevisiae isolates.

Abstract:

:Although vaginitis caused by Saccharomyces cerevisiae is extremely rare, in recent years we have experienced an increasing frequency of S. cerevisiae isolation from the vaginas of fertile-age women. In order to investigate the epidemiology of these vaginal infections, a total of 40 isolates of S. cerevisiae derived from symptomatic and asymptomatic women were characterized by two DNA typing approaches, named ribosomal DNA (rDNA) hybridization and Ty917 hybridization, based on the Southern blotting technique. After transfer, the polymorphic DNA restriction fragments were hybridized with the entire repeat of S. cerevisiae rDNA for one method and with the entire sequence of the Ty917 retrotransposon for the other. After elaboration with computer-assisted analysis, the results of each method showed that Ty917 hybridization is endowed with a discriminatory power higher than that of rDNA hybridization. With the Ty917 hybridization method, all of the S. cerevisiae isolates tested appeared very heterogeneous, with the exception of those collected from individual patients with recurrent vaginitis. This allowed us to exclude a possible common source of infection while the high relatedness among S. cerevisiae sequential isolates from recurrent-vaginitis patients could suggest a pattern of relapse rather than frequent reinfection.

journal_name

J Clin Microbiol

authors

Posteraro B,Sanguinetti M,D'Amore G,Masucci L,Morace G,Fadda G

doi

10.1128/JCM.37.7.2230-2235.1999

subject

Has Abstract

pub_date

1999-07-01 00:00:00

pages

2230-5

issue

7

eissn

0095-1137

issn

1098-660X

journal_volume

37

pub_type

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