期刊
REPRODUCTIVE BIOMEDICINE ONLINE
卷 43, 期 3, 页码 503-514出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.rbmo.2021.06.004
关键词
Infertility; Lactobacillus; Probiotics; Ureaplasma parvum
The study found that oral probiotic supplements may have a protective effect on vaginal microbiota, limiting the growth of harmful bacteria and potentially preventing or treating dysbiotic vaginal flora.
Research question: Does oral probiotic supplementation influence the relative abundance of different vaginal microbiota in women experiencing infertility? Design: A prospective, monocentric randomized controlled trial. To study the influence of probiotics on infertility, 80 patients with primary or secondary infertility were included. Patients were assigned to either a probiotic treatment or a control group. Participants in the treatment group (n = 40) took one sachet (2 g) a day of a defined probiotic supplement limiting Lactobacillus strains. Patients in the control group did not receive any additional probiotic supplements. Vaginal samples were taken on day 20 of the menstrual cycle and 4 weeks later, on day 20, of the consecutive cycle. Subsequently, 16s rRNA gene analysis of the vaginal samples was conducted. Results: After the intervention phase, no effects on alpha diversity resulting from treatment could be observed. The between sample diversity of different women (beta diversity) at baseline had no effects of age, treatment group or body mass index. Primary or secondary sterility, however, had a significant effect on community. Three clusters (Lactobacillus crispatus, Lactobacillus iners and Lactobacillus gasseri) were identified as the leading representatives. Furthermore, patients treated with probiotics showed limited growth of Ureaplasma parvum compared with the control group (P = 0.021). Conclusions: This study points to a possible protective effect of probiotic supplements on the vaginal microbiota. It is tempting to speculate that this effect assists in containing the growth of non-beneficial bacteria and helps to prevent or cure a dysbiotic vaginal flora.
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