The role of lactic acid bacteria in maintaining vaginal internal environment homeostasis in patients with infertility

Abstract

ObjectiveThis work aimed to investigate the role of lactic acid bacteria in patients with infertility caused by abnormal vaginal microecology and its related mechanisms and to provide evidence for the treatment of the disease. MethodsA total of 100 infertile women with vaginal microecological disorders were selected as the research subjects. According to the treatment method, they were divided into a control group (50 cases of metronidazole) and an experimental group (50 cases of metronidazole + lactic acid bacteria capsules). Changes in vaginal secretions and inflammatory factors before and after treatment were detected, and the therapeutic effects of different treatment methods on vaginal symptoms and infertility were analysed. Resultsthe proportion of patients with pH > 4.5 in the two groups after treatment decreased significantly, and the proportion in the experimental group (18%) was significantly lower than that in the control group (44%) (P < 0.01). The proportion of patients with grades II to III in the experimental group (92%) was significantly higher than that in the control group (68%) (P < 0.01). After treatment, the normal lactic acid bacteria count and H2O2 concentrations in the experimental group (80% and 84%) were significantly higher than those in the control group (18% and 62%), and the concentration of interleukin-2 (IL-2) was higher than that in the control group (P < 0.05), while interleukin-13 (IL-13) and tumor necrosis factor-α (TNF-α) were lower than those in the control group (P < 0.05). The total effective rate (96%) and pregnancy rate (26%) of the experimental group were higher than those of the control group (82% and 14%) (P < 0.05). Conclusionlactic acid bacteria can reduce the vaginal pH value, regulate the H2O2 content and immune factor content, and improve the imbalance of the vaginal microecological environment, thereby increasing the pregnancy rate of patients, so it is of great clinical application value.