Identifying Predictive Bacterial Markers from Cervical Swab Microbiota on Pregnancy Outcome in Woman Undergoing Assisted Reproductive Technologies.
assisted reproduction technology
biomarkers
microbiota
pregnancy outcome
Journal
Journal of clinical medicine
ISSN: 2077-0383
Titre abrégé: J Clin Med
Pays: Switzerland
ID NLM: 101606588
Informations de publication
Date de publication:
28 Jan 2022
28 Jan 2022
Historique:
received:
04
01
2022
revised:
21
01
2022
accepted:
26
01
2022
entrez:
15
2
2022
pubmed:
16
2
2022
medline:
16
2
2022
Statut:
epublish
Résumé
Failure of the embryo to implant causes about three-fourths of lost pregnancies. Female genital tract microbiota has been associated to Assisted Reproductive Technologies (ART) outcomes. The objective of this study was to analyze the microbiota of human cervical swab and to correlate these findings with the ART outcomes. In this study, 88 cervical swabs were collected from women undergoing ART cycles, with various causes of infertility, at the beginning of the ART protocols. After microbial DNA extraction, V3-V4 variable regions of the 16S rRNA gene were amplified and sequenced on the Illumina MiSeq platform. PEnalized LOgistic Regression Analysis (PELORA) was performed to identify clusters of bacterial populations with differential abundances between patients with unfavorable and favorable pregnancy outcome groups, respectively. We identified a core of microorganisms at lower taxonomic levels that were predictive of women's pregnancy outcomes. Statistically significant differences were identified at species levels with Cervix is colonized by microorganisms which can play a role in ART outcomes as seen by an overall decrease in embryo attachment rates and pregnancy rates in both fertile and infertile women. If confirmed in a larger cohort, the abundance of these bacteria can be useful not only as a marker of unfavorable pregnancy outcome but also they may open the way to new interventional strategies based on genital tract microbiota manipulation in order to increase the pregnancy rates in woman undergoing assisted reproductive technologies.
Sections du résumé
BACKGROUND AND AIMS
OBJECTIVE
Failure of the embryo to implant causes about three-fourths of lost pregnancies. Female genital tract microbiota has been associated to Assisted Reproductive Technologies (ART) outcomes. The objective of this study was to analyze the microbiota of human cervical swab and to correlate these findings with the ART outcomes.
MATERIALS AND METHODS
METHODS
In this study, 88 cervical swabs were collected from women undergoing ART cycles, with various causes of infertility, at the beginning of the ART protocols. After microbial DNA extraction, V3-V4 variable regions of the 16S rRNA gene were amplified and sequenced on the Illumina MiSeq platform. PEnalized LOgistic Regression Analysis (PELORA) was performed to identify clusters of bacterial populations with differential abundances between patients with unfavorable and favorable pregnancy outcome groups, respectively.
RESULTS
RESULTS
We identified a core of microorganisms at lower taxonomic levels that were predictive of women's pregnancy outcomes. Statistically significant differences were identified at species levels with
DISCUSSION
CONCLUSIONS
Cervix is colonized by microorganisms which can play a role in ART outcomes as seen by an overall decrease in embryo attachment rates and pregnancy rates in both fertile and infertile women. If confirmed in a larger cohort, the abundance of these bacteria can be useful not only as a marker of unfavorable pregnancy outcome but also they may open the way to new interventional strategies based on genital tract microbiota manipulation in order to increase the pregnancy rates in woman undergoing assisted reproductive technologies.
Identifiants
pubmed: 35160131
pii: jcm11030680
doi: 10.3390/jcm11030680
pmc: PMC8836651
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Ministero della Salute
ID : Ricerca Corrente
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