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Article Publish Status: FREE
Abstract Title:

Lactobacillus crispatus inhibits the infectivity of Chlamydia trachomatis elementary bodies, in vitro study.

Abstract Source:

Sci Rep. 2016 ;6:29024. Epub 2016 Jun 29. PMID: 27354249

Abstract Author(s):

Paola Nardini, Rogers Alberto Ñahui Palomino, Carola Parolin, Luca Laghi, Claudio Foschi, Roberto Cevenini, Beatrice Vitali, Antonella Marangoni

Article Affiliation:

Paola Nardini

Abstract:

Lactobacillus species dominate the vaginal microbiota of healthy reproductive-age women and protect the genitourinary tract from the attack of several infectious agents. Chlamydia trachomatis, a leading cause of sexually transmitted disease worldwide, can induce severe sequelae, i.e. pelvic inflammatory disease, infertility and ectopic pregnancy. In the present study we investigated the interference of Lactobacillus crispatus, L. gasseri and L. vaginalis, known to be dominant species in the vaginal microbiome, with the infection process of C. trachomatis. Lactobacilli exerted a strong inhibitory effect on Chlamydia infectivity mainly through the action of secreted metabolites in a concentration/pH dependent mode. Short contact times were the most effective in the inhibition, suggesting a protective role of lactobacilli in the early steps of Chlamydia infection. The best anti-Chlamydia profile was shown by L. crispatus species. In order to delineate metabolic profiles related to anti-Chlamydia activity, Lactobacillus supernatants were analysed by (1)H-NMR. Production of lactate and acidification of the vaginal environment seemed to be crucial for the activity, in addition to the consumption of the carbonate source represented by glucose. The main conclusion of this study is that high concentrations of L. crispatus inhibit infectivity of C. trachomatis in vitro.

Study Type : In Vitro Study

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Sayer Ji
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