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Characterization and in vitro evaluation of a vaginal gel containing lactobacillus crispatus for the prevention of gonorrhea.

  • 2020-10
  • International Journal of Pharmaceutics 588
    • K.C. N'Guessan Gnaman
    • S. Bouttier
    • A. Yéo
    • A.A.S. Aka Any-Grah
    • S. Geiger
    • N. Huang
    • V. Nicolas
    • S. Villebrun
    • H. Fayé-Ketté
    • G. Ponchel
    • A. Koffi
    • F. Agnely

Abstract

The increasing resistance of Neisseria gonorrhoeae to any current antibiotic treatment and the difficulties associated with the use of prevention means such as condom urge the need for alternative methods to prevent this sexually transmitted infection. In this work, a prevention strategy based on the use of a vaginal gel containing Lactobacilli was assessed in vitro. A Lactobacillus crispatus strain (ATCC 33197) was selected based on the published data on its ability to inhibit Neisseria gonorrhoeae. Its probiotic properties were first characterized. Then, a thermo-sensitive hydrogel containing 21.5% of poloxamer 407, 1% of sodium alginate and 9log10 CFU of Lactobacillus crispatus per gel sample (5 g) was developed. The gelation temperature and the rheological characteristics of this formulation appeared suitable for a vaginal administration. Lactobacillus crispatus was viable in the gel for six months although a large amount of the bacteria was not culturable. The ability of Lactobacillus crispatus to inhibit Neisseria gonorrhoeae was still observed with the gel. Such system, thus, appeared promising for the prevention of gonorrhea.

Keywords: Confocal laser scanning microscopy; Gel; Gonorrhea prevention; Lactobacillus; Probiotics; Rheology; Vaginal administration.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Lactobacillus crispatusInhibition of Neisseria Gonorrhoeae InfectionBeneficial
Moderate
Lactobacillus crispatus LBV 88Inhibition of Neisseria Gonorrhoeae InfectionBeneficial
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Lactobacillus crispatus LV5 88Extended Viability of Lactobacillus crispatusBeneficial
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Lactobacillus crispatus LV5 88Inhibition of Neisseria Gonorrhoeae InfectionBeneficial
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