1. Microbial profile of placentas from Tanzanian mothers with adverse pregnancy outcomes and periodontitis.
- Author
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Miranda‐Rius, Jaume, Brunet‐Llobet, Lluís, Blanc, Vanessa, Álvarez, Gerard, Moncunill‐Mira, Jordi, Mashala, Elias I, Kasebele, Yona, Masenga, Gileard, Nadal, Alfons, and León, Rubén
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RNA analysis , *EAST Africans , *KRUSKAL-Wallis Test , *STATISTICS , *MYCOPLASMA diseases , *SEQUENCE analysis , *ANALYSIS of variance , *PERIODONTITIS , *ORAL health , *MULTIVARIATE analysis , *PREGNANT women , *STREPTOCOCCAL diseases , *PREGNANCY outcomes , *RISK assessment , *FETAL diseases , *BIOINFORMATICS , *PLACENTA , *PREGNANCY complications , *GENOMICS , *DESCRIPTIVE statistics , *CHI-squared test , *RESEARCH funding , *DATA analysis software , *DATA analysis , *DISEASE risk factors - Abstract
Aim: To investigate microbial profiles in placentas from a population of East African mothers with and without adverse pregnancy outcomes and with regard to their periodontal status. Material and Methods: Thirty‐six placentas from pregnant women from Tanzania were classified into three groups according to both pregnancy outcome and the mother's periodontal health. The microbial composition in each group was then compared using 16S rRNA metagenomics. Additionally, placenta specimens were analyzed histologically for chorioamnionitis by a single pathologist blinded to the clinical data. Results: The greatest differences were observed in the group of mothers with periodontitis. The microbial load was low in all three groups of mothers. Periodontitis had a notable influence on the structure of the placental microbiota. Three phyla and 44 genera were associated with periodontitis, whereas only the Tenericutes phylum was associated with the adverse pregnancy variable. Streptococcaceae and Mycoplasmataceae families were associated with both periodontitis and adverse pregnancy outcomes. Finally, although the differences for chorioamnionitis were not significant, this intra‐amniotic infection was more frequent in the placentas from mothers with periodontitis. Conclusions: Our findings suggest that bacteria from the oral cavity may involve the feto‐placental unit, and that periodontitis may be a modulating factor of the microbial community present in this niche. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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