Abstract
To comprehensively summarize the existing evidence on the effectiveness of vaginal microbiota transplantation (VMT) in treating vaginal dysbiosis (VD) and bacterial vaginosis (BV). Following the PRISMA-ScR guidelines, a scoping review was conducted through October 10, 2023, using the databases PubMed, Embase, Scopus, Web of Science, Cochrane Library, China NationalKnowledge Infrastructure (CNKI), Wanfang, SinoMed, Weipu (VIP), ClinicalTrials.gov and the Chinese clinical trial registry. A total of 12 studies were included, of which 7 were published (comprising 3 human and 4 animal studies), and 5 were ongoing registered trials (human). Of the published human studies involving 36 women, one focused on VD, and two investigated BV. These studies reported that VMT restored the Lactobacillus-dominated vaginal microbiota, alleviating symptoms. In animal studies with 145 female rats or mice, VMT was explored for one case of VD and three cases of BV, demonstrating a reduction in the expression of IL-1β and TNF-α. Additionally, two of the animal studies also indicated an increase in the number of Lactobacilli following VMT. The ongoing registered trials involved 556 women, with two focusing on VD and three targeting BV. VMT shows promise in restoring the Lactobacillus-dominated vaginal microbiota among women with VD or BV. Moreover, animal studies have indicated an increase in the number of Lactobacilli and a decrease in the expression of IL-1β and TNF-α following VMT. Ongoing registered trials are expected to provide comprehensive evidence regarding the efficacy of VMT.
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