Refining Unfavorable Vaginal Microbial Community in Infertile Women Subjected to Precision Probiotic Intervention: An...

Area of Science:

• Microbiology
• Reproductive Science
• Gastroenterology

Background:

• Vaginal microbiomes are classified into five Community State Types (CSTs).
• CST-III and CST-IV are linked to vaginal dysbiosis, increasing risks of infections and assisted reproductive technology (ART) failure.
• A healthy vaginal microbiome is crucial for successful reproduction.

Purpose of the Study:

• To investigate the impact of oral probiotic supplementation on vaginal microbiota composition.
• To assess the efficacy of a probiotic formula with vaginal-specific lactobacilli and prebiotics in modulating the vaginal microbiome.

Main Methods:

• Recruited 32 women with prior failed IVF cycles undergoing ART.
• Analyzed vaginal microbiota composition before and after oral probiotic administration.
• Utilized 16S ribosomal RNA (rRNA) sequencing technology for microbiota analysis.

Main Results:

• Oral probiotic supplementation significantly modulated the vaginal microbiome.
• Observed a decrease in species diversity.
• Favored dominance of Lactobacillus and Bifidobacterium, while reducing Atopobium, Gardnerella, and Prevotella.

Conclusions:

• Oral administration of specific probiotics can reduce pathogenic bacteria in the vaginal microbiome.
• This intervention promotes an increase in lactobacilli, associated with a healthy vaginal ecosystem.
• Gynecologists may consider precision probiotic treatment for women with CST-III/IV undergoing IVF to potentially improve pregnancy success.