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Human Endometrial Microbiota at Term of Normal Pregnancies

The endometrium is a challenging site for metagenomic analysis due to difficulties in obtaining uncontaminated samples and the limited abundance of the bacterial population. Indeed, solid correlations between endometrial physio-pathologic conditions and bacteria compositions have not yet been firmly...

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Autores principales: Leoni, Claudia, Ceci, Oronzo, Manzari, Caterina, Fosso, Bruno, Volpicella, Mariateresa, Ferrari, Alessandra, Fiorella, Paola, Pesole, Graziano, Cicinelli, Ettore, Ceci, Luigi Ruggiero
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947671/
https://www.ncbi.nlm.nih.gov/pubmed/31779234
http://dx.doi.org/10.3390/genes10120971
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author Leoni, Claudia
Ceci, Oronzo
Manzari, Caterina
Fosso, Bruno
Volpicella, Mariateresa
Ferrari, Alessandra
Fiorella, Paola
Pesole, Graziano
Cicinelli, Ettore
Ceci, Luigi Ruggiero
author_facet Leoni, Claudia
Ceci, Oronzo
Manzari, Caterina
Fosso, Bruno
Volpicella, Mariateresa
Ferrari, Alessandra
Fiorella, Paola
Pesole, Graziano
Cicinelli, Ettore
Ceci, Luigi Ruggiero
author_sort Leoni, Claudia
collection PubMed
description The endometrium is a challenging site for metagenomic analysis due to difficulties in obtaining uncontaminated samples and the limited abundance of the bacterial population. Indeed, solid correlations between endometrial physio-pathologic conditions and bacteria compositions have not yet been firmly established. Nevertheless, the study of the endometrial microbiota is of great interest due to the close correlations between microbiota profiles, women’s health, and successful pregnancies. In this study, we decided to tackle the study of the endometrial microbiota through analysis of bacterial population in women subjected to elective caesarean delivery. As a pilot study, a cohort of 19 Caucasian women at full term of normal pregnancy and with a prospection of elective caesarean delivery was enrolled for endometrium sampling at the time of caesarean section. Sampling was carried out by endometrial biopsy soon after the delivery of the newborn and the discharge of the placenta and fetal membranes from the uterus. Bacterial composition was established by a deep metabarcoding next generation sequencing (NGS) procedure addressing the V5–V6 hypervariable region of the 16S rRNA gene. Amplicon sequences were analysed by bioinformatic procedures for denoising and taxonomic classification. The RDP database was used as 16S rRNA reference collection. Metabarcoding analysis showed the presence of a common bacterial composition, including six genera classifiable within the human microbiota (Cutibacterium, Escherichia, Staphylococcus, Acinetobacter, Streptococcus, Corynebacterium), that could be part of the core endometrial microbiota under the specific conditions examined. These results can provide useful information for future studies on the correlations between bacteria and successful pregnancies.
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spelling pubmed-69476712020-01-13 Human Endometrial Microbiota at Term of Normal Pregnancies Leoni, Claudia Ceci, Oronzo Manzari, Caterina Fosso, Bruno Volpicella, Mariateresa Ferrari, Alessandra Fiorella, Paola Pesole, Graziano Cicinelli, Ettore Ceci, Luigi Ruggiero Genes (Basel) Article The endometrium is a challenging site for metagenomic analysis due to difficulties in obtaining uncontaminated samples and the limited abundance of the bacterial population. Indeed, solid correlations between endometrial physio-pathologic conditions and bacteria compositions have not yet been firmly established. Nevertheless, the study of the endometrial microbiota is of great interest due to the close correlations between microbiota profiles, women’s health, and successful pregnancies. In this study, we decided to tackle the study of the endometrial microbiota through analysis of bacterial population in women subjected to elective caesarean delivery. As a pilot study, a cohort of 19 Caucasian women at full term of normal pregnancy and with a prospection of elective caesarean delivery was enrolled for endometrium sampling at the time of caesarean section. Sampling was carried out by endometrial biopsy soon after the delivery of the newborn and the discharge of the placenta and fetal membranes from the uterus. Bacterial composition was established by a deep metabarcoding next generation sequencing (NGS) procedure addressing the V5–V6 hypervariable region of the 16S rRNA gene. Amplicon sequences were analysed by bioinformatic procedures for denoising and taxonomic classification. The RDP database was used as 16S rRNA reference collection. Metabarcoding analysis showed the presence of a common bacterial composition, including six genera classifiable within the human microbiota (Cutibacterium, Escherichia, Staphylococcus, Acinetobacter, Streptococcus, Corynebacterium), that could be part of the core endometrial microbiota under the specific conditions examined. These results can provide useful information for future studies on the correlations between bacteria and successful pregnancies. MDPI 2019-11-26 /pmc/articles/PMC6947671/ /pubmed/31779234 http://dx.doi.org/10.3390/genes10120971 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Leoni, Claudia
Ceci, Oronzo
Manzari, Caterina
Fosso, Bruno
Volpicella, Mariateresa
Ferrari, Alessandra
Fiorella, Paola
Pesole, Graziano
Cicinelli, Ettore
Ceci, Luigi Ruggiero
Human Endometrial Microbiota at Term of Normal Pregnancies
title Human Endometrial Microbiota at Term of Normal Pregnancies
title_full Human Endometrial Microbiota at Term of Normal Pregnancies
title_fullStr Human Endometrial Microbiota at Term of Normal Pregnancies
title_full_unstemmed Human Endometrial Microbiota at Term of Normal Pregnancies
title_short Human Endometrial Microbiota at Term of Normal Pregnancies
title_sort human endometrial microbiota at term of normal pregnancies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947671/
https://www.ncbi.nlm.nih.gov/pubmed/31779234
http://dx.doi.org/10.3390/genes10120971
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