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Bacterial vaginosis: epidemiologic, clinical and diagnostic updates

Giorgio Dirani, Silvia Zannoli, Maria Federica Pedna, Francesco Congestrì, Patrizia Farabegoli, Barbara Dalmo, Vittorio Sambri
  • Giorgio Dirani
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Silvia Zannoli
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Maria Federica Pedna
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Francesco Congestrì
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Patrizia Farabegoli
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Barbara Dalmo
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC), Italy
  • Vittorio Sambri
    Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina (FC); DIMES, University of Bologna, Italy | vittorio.sambri@auslromagna.it

Abstract

Background and aims. Bacterial vaginosis (BV) is one the more frequently identified genital syndrome among childbearing aged women. The basic condition that generates this condition is a modification in the vaginal microbiota. The aim of this paper is to briefly review the current status of the art of BV and to report the results of a pilot study performed with an innovative PCR based technique.
Materials and Methods. 36 samples of vaginal fluid routinely submitted for the diagnosis of BV to the Unit of Microbiology – GRHL were comparatively evaluated by standard techniques and with the HP-Vaginiti e Vaginosi NLM kit that simultaneously detects in a quantitative way specific DNA from Candida (albicans, glabrata; krusei, tropicalis), Gardnerella vaginalis, Lactobacillus spp. and Atopobium vaginae.
Results and conclusions. Candida spp. has been identified in 8 samples with culture and in 15 with the molecular test. 29 G. vaginalis were found by PCR whereas only in 7 samples a specific prescription for this microbe was present (of which 4 positive). A. vaginae has been identified in 20 samples by the molecular approach and Lactobacillus spp. was identified in 19 samples (by culture) and in 32 by PCR. The overall diagnosis of BV was made in 9 patients by standard techniques and in 7 by applying the molecular approach. (Cohen’s kappa test: 0,84). The findings of this study clearly demonstrate that the joint use of the routine culture- based techniques with the multiplex PCR methods amplifies by far the sensitivity of the overall diagnostic workflow of BV.

Keywords

Bacterial vaginosis, Gardenerella vaginalis, Lactobacillus spp., Atopobium vaginae, Molecular Diagnosis

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Submitted: 2018-02-15 09:04:06
Published: 2018-02-27 10:03:23
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Copyright (c) 2017 Vittorio Sambri

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