Bacterial Vaginosis and Vulvovaginal Candidiasis Pathophysiologic Interrelationship

Area of Science:

• Gynecology
• Infectious Diseases
• Immunology

Background:

• Bacterial vaginosis (BV) and vulvovaginal candidiasis (VVC) are common causes of vaginal symptoms.
• These infections are typically considered independent, with distinct pathogenic mechanisms.
• Clinical observations suggest a potential link between recurrent BV (RBV) and recurrent VVC (RVVC).

Purpose of the Study:

• To discuss the biological basis for the interrelationship between RBV and RVVC.
• To explore how BV dysbiosis may compromise immune defenses, leading to VVC.
• To examine the contribution of BV to antifungal resistance and refractory VVC.

Main Methods:

• Review of existing literature and clinical experience.
• Discussion of pathogenic mechanisms underlying BV and VVC.
• Analysis of immune system interactions in the vaginal environment.

Main Results:

• BV dysbiosis compromises local immune defenses, reducing vaginal yeast tolerance.
• A pro-inflammatory environment induced by BV can lead to mixed infections or post-treatment VVC.
• Repeated antimicrobial use and RBV can promote fluconazole resistance in Candida albicans.

Conclusions:

• RBV is a significant trigger for RVVC, independent of antibiotic use.
• BV-induced immune compromise and inflammation are key factors in RVVC development.
• Understanding this link is crucial for managing refractory VVC and improving therapeutic outcomes.