Current opinion in obstetrics & gynecology · 2022
Microbiome as a predictor of implantation.
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Gao Xu Shan, Laven Joop, Louwers Yvonne, Budding Andries, Schoenmakers Sam
Аннотация
PURPOSE OF REVIEW: Review the latest research on the female urogenital microbiome as a predictor of successful implantation.
RECENT FINDINGS: Lactobacillus crispatus seems to be beneficial species in a healthy female genital tract, although the presence of anaerobic bacteria and their impact has yet to be determined. The vaginal microbiome is associated with assisted reproductive technology (ART) outcome in terms of successful implantation and pregnancy. Approaches restoring a dysbiotic vaginal microbiome seem promising. It is questionable if a unique endometrial microbiome exists, given the low bacterial biomass, the invasiveness of endometrial sampling, and its associated high contamination risk. Future studies should focus on the whole microbiome using proteomics and metabolomics, as well as the virome to get a more holistic understanding of its role in reproduction.
SUMMARY: The vaginal and endometrial compartments are being studied to determine a healthy and unhealthy microbiome composition. Defining a healthy composition could provide insight into physiological processes related to the success of embryo implantation. The vaginal microbiome is easily accessible and its composition can be reliably assessed and can be associated with ART outcome. The existence of an endometrial or uterine microbiome is still debated, due to the combination of low biomass and unavoidable high risk of contamination during sampling.
RECENT FINDINGS: Lactobacillus crispatus seems to be beneficial species in a healthy female genital tract, although the presence of anaerobic bacteria and their impact has yet to be determined. The vaginal microbiome is associated with assisted reproductive technology (ART) outcome in terms of successful implantation and pregnancy. Approaches restoring a dysbiotic vaginal microbiome seem promising. It is questionable if a unique endometrial microbiome exists, given the low bacterial biomass, the invasiveness of endometrial sampling, and its associated high contamination risk. Future studies should focus on the whole microbiome using proteomics and metabolomics, as well as the virome to get a more holistic understanding of its role in reproduction.
SUMMARY: The vaginal and endometrial compartments are being studied to determine a healthy and unhealthy microbiome composition. Defining a healthy composition could provide insight into physiological processes related to the success of embryo implantation. The vaginal microbiome is easily accessible and its composition can be reliably assessed and can be associated with ART outcome. The existence of an endometrial or uterine microbiome is still debated, due to the combination of low biomass and unavoidable high risk of contamination during sampling.