Relationship between vaginal microbiota and chorioamnionitis: A prospective cohort study

Area of Science:

• Microbiology
• Obstetrics
• Genomics

Background:

• Chorioamnionitis is a significant risk factor for adverse pregnancy outcomes.
• Understanding the role of the vaginal microbiome in chorioamnionitis is crucial for developing predictive and preventive strategies.

Purpose of the Study:

• To investigate the association between vaginal microbiota composition and chorioamnionitis.
• To evaluate the predictive value of vaginal microbiota for chorioamnionitis.

Main Methods:

• Prospective recruitment of 30 pregnant women in their third trimester.
• Categorization into clinical chorioamnionitis (IP), asymptomatic histological chorioamnionitis (CP), and healthy control (CN) groups.
• Vaginal sample analysis using microbial diversity sequencing and statistical modeling (Random Forest, LDA, logistic regression).

Main Results:

• Clinical chorioamnionitis (IP) group showed higher rates of low birth weight and respiratory distress syndrome.
• Increased microbial diversity (Shannon and Simpson indices) in the IP group compared to CP and CN groups.
• Reduced abundance of Lactobacillus crispatus in the IP group, identified as a key predictor of clinical chorioamnionitis.

Conclusions:

• Decreased L. crispatus and increased anaerobic bacteria are associated with chorioamnionitis onset.
• Vaginal microbiota, particularly L. crispatus levels, shows potential as a biomarker for chorioamnionitis prediction.
• Vaginal microbiota may offer targets for novel prevention and therapeutic strategies for chorioamnionitis.