Infectious Diseases in Obstetrics and Gynecology

Infectious Diseases in Obstetrics and Gynecology / 2001 / Article

Open Access

Volume 9 |Article ID 872042 |

Jorgelina Smayevsky, Liliana Fernández Canigia, Alejandra Lanza, Hebe Bianchini, "Vaginal Microflora Associated With Bacterial Vaginosis in Nonpregnant Women: Reliability of Sialidase Detection", Infectious Diseases in Obstetrics and Gynecology, vol. 9, Article ID 872042, 6 pages, 2001.

Vaginal Microflora Associated With Bacterial Vaginosis in Nonpregnant Women: Reliability of Sialidase Detection

Received12 Jul 2000
Accepted10 Nov 2000


Objective: To determine the prevalence of Gardnerella vaginalis, anaerobic bacteria and Mycoplasma hominis in vaginal specimens of women with and without bacterial vaginosis (BV) as well as to determine the sensitivity and specificity of the direct sialidase assay of vaginal fluid as a rapid test for diagnosing this syndrome.Methods: Vaginal cultures were obtained from 109 nonpregnant women (mean age 33 ± 7.1 years), 47 of them with clinical signs of BV (BV+) and 62 of them without BV (BV- ). In addition, we determined the vaginal sialidase activity in both groups, which may serve as a feature of this syndrome.Results: Anaerobic bacteria were isolated in 91% and 18% of the BV+and BV- groups, respectively (p < 0.001). Peptostreptococcus spp., Prevotella bivia and Porphyromonas spp. were strongly associated with BV. P. bivia and Prevotella spp. represented 44% of all the anaerobes isolated in the BV+ group. All the isolated P. bivia strains presented sialidase activity. G. vaginalis and M. hominis were isolated in 76% and 42% of the BV+ and 1% and 0% of the BV- women, respectively (p < 0.001). Mobiluncus morphotypeswere observed in 34% of the BV+and 0% of BV- women. Sensitivity, specificity, positive predictive value and negative predictive value of sialidase activity were 81%, 94%, 90% and 86%, respectively.Conclusions: Our data demonstrate a strong association between G. vaginalis, M. hominis, and P. bivia and BV. Sialidase activity and Gram stain of vaginal fluid represent accurate methods for diagnosing BV.

Copyright © 2001 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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