Orally administrated Lactobacillus gasseri TM13 and Lactobacillus crispatus LG55 can restore the vaginal health of patients recovering from bacterial vaginosis

Frontiers in Immunology

Immunology

Haifeng Zhang¹  Yiyi Zhong¹  Lan Ge¹  Liang Xiao²  Chao Fang²  Shaowei Zhao²  Yuanqiang Zou²  Zhuoqi Huang³  Fengyuan Qi⁴  Yongke Zhang⁵  Xiaowei Zhang⁵  Liting Huang⁵  Xinyang Liu⁵  Jinli Lyu⁵  Shangrong Fan⁵  Yiheng Liang⁵ 

[1] BGI Precision Nutrition (Shenzhen) Technology Co., Ltd, Shenzhen, China;BGI-Shenzhen, Shenzhen, China;ShenZhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, Shenzhen, China;BGI-Shenzhen, Shenzhen, China;ShenZhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, Shenzhen, China;Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China;Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China;BGI-Shenzhen, Shenzhen, China;ShenZhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, Shenzhen, China;College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China;Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China;Institute of Obstetrics and Gynecology, Shenzhen Peking University Hong Kong University of Science and Technology Medical Center, Shenzhen, China;Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Diseases, Peking University Shenzhen Hospital, Shenzhen, China;

关键词: bacterial vaginosis;    Lactobacillus;    oral administration;    vaginal microbiome;    Prevotella timonensis;   

DOI  :  10.3389/fimmu.2023.1125239

 received in 2022-12-20, accepted in 2023-06-19,  发布年份 2023

来源: Frontiers

【 摘 要 】

Bacterial vaginosis (BV) is a common infection of the lower genital tract with a vaginal microbiome dysbiosis caused by decreasing of lactobacilli. Previous studies suggested that supplementation with live Lactobacillus may benefit the recovery of BV, however, the outcomes vary in people from different regions. Herein, we aim to evaluate the effectiveness of oral Chinese-origin Lactobacillus with adjuvant metronidazole (MET) on treating Chinese BV patients. In total, 67 Chinese women with BV were enrolled in this parallel controlled trial and randomly assigned to two study groups: a control group treated with MET vaginal suppositories for 7 days and a probiotic group treated with oral Lactobacillus gasseri TM13 and Lactobacillus crispatus LG55 as an adjuvant to MET for 30 days. By comparing the participants with Nugent Scores ≥ 7 and < 7 on days 14, 30, and 90, we found that oral administration of probiotics did not improve BV cure rates (72.73% and 84.00% at day 14, 57.14% and 60.00% at day 30, 32.14% and 48.39% at day 90 for probiotic and control group respectively). However, the probiotics were effective in restoring vaginal health after cure by showing higher proportion of participants with Nugent Scores < 4 in the probiotic group compared to the control group (87.50% and 71.43% on day 14, 93.75% and 88.89% on day 30, and 77.78% and 66.67% on day 90). The relative abundance of the probiotic strains was significantly increased in the intestinal microbiome of the probiotic group compared to the control group at day 14, but no significance was detected after 30 and 90 days. Also, the probiotics were not detected in vaginal microbiome, suggesting that L. gasseri TM13 and L. crispatus LG55 mainly acted through the intestine. A higher abundance of Prevotella timonensis at baseline was significantly associated with long-term cure failure of BV and greatly contributed to the enrichment of the lipid IVA synthesis pathway, which could aggravate inflammation response. To sum up, L. gasseri TM13 and L. crispatus LG55 can restore the vaginal health of patients recovering from BV, and individualized intervention mode should be developed to restore the vaginal health of patients recovering from BV.Clinical trial registrationhttps://classic.clinicaltrials.gov/ct2/show/, identifier NCT04771728.

【 授权许可】

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Copyright © 2023 Qi, Fan, Fang, Ge, Lyu, Huang, Zhao, Zou, Huang, Liu, Liang, Zhang, Zhong, Zhang, Xiao and Zhang