Is there a placental microbiota? A critical review and re-analysis of published placental microbiota datasets

JJ Panzer, R Romero, JM Greenberg, AD Winters… - BMC microbiology, 2023 - Springer
The existence of a placental microbiota is debated. The human placenta has historically
been considered sterile and microbial colonization was associated with adverse pregnancy …

Comparison of placenta samples with contamination controls does not provide evidence for a distinct placenta microbiota

AP Lauder, AM Roche, S Sherrill-Mix, A Bailey… - Microbiome, 2016 - Springer
Background Recent studies have suggested that bacteria associated with the placenta—a
“placental microbiome”—may be important in reproductive health and disease. However, a …

Microbial communities in placentas from term normal pregnancy exhibit spatially variable profiles

LA Parnell, CM Briggs, B Cao, O Delannoy-Bruno… - Scientific reports, 2017 - nature.com
The placenta is the principal organ nurturing the fetus during pregnancy and was
traditionally considered to be sterile. Recent work has suggested that the placenta harbours …

Lack of detection of a human placenta microbiome in samples from preterm and term deliveries

JS Leiby, K McCormick, S Sherrill-Mix, EL Clarke… - Microbiome, 2018 - Springer
Background Historically, the human womb has been thought to be sterile in healthy
pregnancies, but this idea has been challenged by recent studies using DNA sequence …

Does the human placenta delivered at term have a microbiota? Results of cultivation, quantitative real-time PCR, 16S rRNA gene sequencing, and metagenomics

KR Theis, R Romero, AD Winters, JM Greenberg… - American journal of …, 2019 - Elsevier
Background The human placenta has been traditionally viewed as sterile, and microbial
invasion of this organ has been associated with adverse pregnancy outcomes. Yet, recent …

Deep microbial analysis of multiple placentas shows no evidence for a placental microbiome

AA Kuperman, A Zimmerman… - … Journal of Obstetrics …, 2020 - Wiley Online Library
Objectives To resolve the controversy regarding the presence of a microbiota in the
placenta. Design Classical and molecular microbiological study. Setting All samples were …

Elimination of “kitome” and “splashome” contamination results in lack of detection of a unique placental microbiome

IN Olomu, LC Pena-Cortes, RA Long, A Vyas… - BMC microbiology, 2020 - Springer
Background A placental microbiome, which may be altered in gestational diabetes mellitus
(GDM), has been described. However, publications raising doubts about the existence of a …

The placenta harbors a unique microbiome

K Aagaard, J Ma, KM Antony, R Ganu… - Science translational …, 2014 - science.org
Humans and their microbiomes have coevolved as a physiologic community composed of
distinct body site niches with metabolic and antigenic diversity. The placental microbiome …

Comment on “the placenta harbors a unique microbiome”

HJ Kliman - Science translational medicine, 2014 - science.org
Comment on “The placenta harbors a unique microbiome” | Science Translational Medicine
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Evidence for contamination as the origin for bacteria found in human placenta rather than a microbiota

R Gschwind, T Fournier, S Kennedy, V Tsatsaris… - PLoS …, 2020 - journals.plos.org
Until recently the in utero environment of pregnant women was considered sterile. Recent
high-sensitivity molecular techniques and high-throughput sequencing lead to some …