Vaginal microenvironment (VME)

The vaginal microenvironment is a dynamic and complex biological system consisting of the vaginal microbiota, host mucosal epithelium, and local immune components [1]. In healthy individuals of reproductive age, this environment is typically dominated by Lactobacillus species, which ferment glycogen-derived products into lactic acid to maintain a low vaginal pH (typically <4.5) [2]. This acidity, along with the production of antimicrobial compounds like hydrogen peroxide and bacteriocins, serves as a primary defense mechanism against the colonization of pathogenic organisms [3]. Disruptions to this balance, often referred to as dysbiosis, can lead to conditions such as bacterial vaginosis and increase the risk of acquiring sexually transmitted infections, including HIV [1,4]. Therapeutic strategies targeting this environment focus on eradicating pathogens with antibiotics or antifungals, as well as restoring the protective flora through the use of probiotics and pH-modulating agents [2,3].

Other names

Vaginal ecosystemVaginal microbiotaVaginal nicheVaginal flora

Restoration of commensal microbial populations, acidification of the vaginal lumen, and direct antimicrobial activity against pathogenic species.