Evidence map›Paper›PMID 31685443›Full record

ArticleEBioMedicine2019

Is the delivery mode a critical factor for the microbial communities in the meconium?

Chen-Jian Liu, Xiao Liang, Zhao-Yi Niu, Qing Jin, Xue-Qin Zeng, Wen-Xue Wang, Meng-Yue Li, Xue-Rong Chen, Hai-Yun Meng, Ran Shen and 5 more

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 pooled it
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 79 citations in OpenAlex.

  1. Pooled it
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  11. Article
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  13. Observational
  14. Article
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  16. Journal of oral microbiology · 2024
    Review
  17. Article
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  19. Metagenetic Analysis of the Pregnant Microbiome in Horses.Animals : an open access journal from MDPI · 2023
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 2 institutions in 1 country.

Chen-Jian LiuFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Xiao LiangDepartment of Infectious Diseases and Hepatic Disease, the First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China; Department of Infectious Diseases and Hepatic Disease, the Affiliated Hospital of Kunming University of Science and Technology, Kunming 650032, Yunnan, China.
Zhao-Yi NiuObstetrics Department, Yan'an Affiliated Hospital of Kunming Medical University, Kunming 650051, Yunnan, China.
Qing JinObstetrics Department, Yan'an Affiliated Hospital of Kunming Medical University, Kunming 650051, Yunnan, China.
Xue-Qin ZengFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Wen-Xue WangDepartment of Infectious Diseases and Hepatic Disease, the First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China; Department of Infectious Diseases and Hepatic Disease, the Affiliated Hospital of Kunming University of Science and Technology, Kunming 650032, Yunnan, China.
Meng-Yue LiFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Xue-Rong ChenObstetrics Department, Yan'an Affiliated Hospital of Kunming Medical University, Kunming 650051, Yunnan, China.
Hai-Yun MengObstetrics Department, Yan'an Affiliated Hospital of Kunming Medical University, Kunming 650051, Yunnan, China.
Ran ShenObstetrics Department, Yan'an Affiliated Hospital of Kunming Medical University, Kunming 650051, Yunnan, China.
Shi-Yi SunFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Yi-Yong LuoFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
En YangFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Jia-Wei GengDepartment of Infectious Diseases and Hepatic Disease, the First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China; Department of Infectious Diseases and Hepatic Disease, the Affiliated Hospital of Kunming University of Science and Technology, Kunming 650032, Yunnan, China. Electronic address: jia_wei_geng@163.com.
Xiao-Ran LiFaculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China. Electronic address: starkeyran@163.com.
Kunming University of Science and Technology · CNKunming Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMothers are the primary source of bacteria for newborns, but it is unclear whether mother-to-newborn transmission occurs prior to, during or after birth. Similarly, the effect of the delivery mode on neonatal microorganisms has been the focus of controversy.

methodsHealthy maternal and neonatal pairs that underwent vaginal birth and caesarean section were enrolled in this study. Meconium, placenta, membrane and amniotic fluid samples for newborns and vaginal, rectal and oral samples for mothers were collected. All samples were amplified and sequenced by a 16S rRNA gene primer set targeting bacteria and archaea.

findingsA total of 550 samples from 36 mother-neonate pairs with vaginal births and 42 mother-neonate pairs with caesarean sections were included in this study. The negative controls showed that the data analysis in this study was not affected by contamination. There was a high diversity of microbial communities in the pregnancy environment of the foetus. Meconium samples could be divided into three distinct types that were not influenced by the delivery method.

interpretationThe distribution patterns of bacterial communities in the meconium, placenta, and foetal membranes were highly similar and had nothing to do with the mode of delivery. For approximately half of the placental microorganisms, the same sequence could be found in the vaginal, rectal, and oral samples of the mother.

Indexed as

Delivery, ObstetricMicrobiotaAdultAmniotic FluidArchaeaFemaleHumansInfant, NewbornMeconiumPhylogenyPlacentaPregnancyArchaeaDelivery modeMeconiumMicrobiota

Identifiers

PMID31685443
PMCPMC6945248
OpenAlexW2983621976

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.