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Genetic diversity of vaginal lactobacilli from women in different countries based on 16S rRNA gene sequences.

Abstract：

AIMS:Lactobacilli are widely distributed in food and the environment, and some colonize the human body as commensal bacteria. The aim of this study was to determine the species of lactobacilli that colonize the vagina and compare them with those found in food and the environment. METHODS AND RESULTS:Thirty-five Lactobacillus strains from women from seven countries were isolated, and sequences from 16S rRNA genes were determined and compared with existing data in GenBank. A phylogenetic tree was achieved using the Neighbour-Joining method based on the analysis of 1465 nucleotides. The results showed that most vaginal isolates were L. crispatus, L. jensenii and L. gasseri. Some were L. vaginalis, L. fermentum, L. mucosae, L. paracasei and L. rhamnosus. Two isolates from a native American woman displayed distinct branches, indicating novel phylotypes. Few vaginal isolates matched food or environmental Lactobacillus species. CONCLUSIONS:Most women worldwide were colonized by three common Lactobacillus species: L. crispatus, L. jensenii and L. gasseri. SIGNIFICANCE AND IMPACT OF THE STUDY:Knowledge of vaginal Lactobacillus species richness and distribution in women worldwide may lead to the design of better probiotic products as bacterial replacement therapy.

journal_name

J Appl Microbiol

journal_title

Journal of applied microbiology

authors

Pavlova SI,Kilic AO,Kilic SS,So JS,Nader-Macias ME,Simoes JA,Tao L

doi

10.1046/j.1365-2672.2002.01547.x

subject

Has Abstract

pub_date

2002-01-01 00:00:00

pages

451-9

issue

3

eissn

1364-5072

issn

1365-2672

pii

1547

journal_volume

92

pub_type

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