Evidence map›Paper›PMID 33001863›Full record

ArticleJCI insight2020

In utero human intestine harbors unique metabolome, including bacterial metabolites.

Yujia Li, Jessica M Toothaker, Shira Ben-Simon, Lital Ozeri, Ron Schweitzer, Blake T McCourt, Collin C McCourt, Lael Werner, Scott B Snapper, Dror S Shouval and 5 more

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

50 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
  2. Immune development in early life.Nature immunology · 2026
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  19. Gut-X axis.iMeta · 2025
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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 7 institutions in 2 countries.

Yujia LiDepartment of Biostatistics and.
Jessica M ToothakerDepartment of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Shira Ben-SimonAzrieli Faculty of Medicine, Bar Ilan University, Safed, Israel.
Lital OzeriAzrieli Faculty of Medicine, Bar Ilan University, Safed, Israel.
Ron SchweitzerAnalytical Chemistry Laboratory, Tel-Hai College, Upper Galilee, Israel.
Blake T McCourtDepartment of Pediatrics, Yale University, New Haven, Connecticut, USA.
Collin C McCourtDepartment of Pediatrics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Lael WernerPediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel.
Scott B SnapperDivision of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA.
Dror S ShouvalPediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel.
Soliman KhatibAnalytical Chemistry Laboratory, Tel-Hai College, Upper Galilee, Israel.
Omry KorenAzrieli Faculty of Medicine, Bar Ilan University, Safed, Israel.
Sameer AgnihortiDepartment of Neurosurgery and.
George TsengDepartment of Biostatistics and.
Liza KonnikovaDepartment of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Bar-Ilan University · ILUniversity of Pittsburgh · USTel Aviv University · ILBoston Children's Hospital · USMigal - Galilee Technology Center · ILTel Hai Academic College · ILYale University · US

Funding

VECTOR CORE FACILITYP30CA047904 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JOHN C. BYRD · 1988 to 2026
$158.0M
Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Autoimmunity and Immunopathology Training ProgramT32AI089443 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI SHLOMCHIK, MARK J · 2010 to 2024
$6.6M
NCATS NIH HHS UL1 TR001863NCI NIH HHS P30 CA047904NIAID NIH HHS T32 AI089443
6 · The paper itself

Abstract

Symbiotic microbial colonization through the establishment of the intestinal microbiome is critical to many intestinal functions, including nutrient metabolism, intestinal barrier integrity, and immune regulation. Recent studies suggest that education of intestinal immunity may be ongoing in utero. However, the drivers of this process are unknown. The microbiome and its byproducts are one potential source. Whether a fetal intestinal microbiome exists is controversial, and whether microbially derived metabolites are present in utero is unknown. Here, we aimed to determine whether bacterial DNA and microbially derived metabolites can be detected in second trimester human intestinal samples. Although we were unable to amplify bacterial DNA from fetal intestines, we report a fetal metabolomic intestinal profile with an abundance of bacterially derived and host-derived metabolites commonly produced in response to microbiota. Though we did not directly assess their source and function, we hypothesize that these microbial-associated metabolites either come from the maternal microbiome and are vertically transmitted to the fetus to prime the fetal immune system and prepare the gastrointestinal tract for postnatal microbial encounters or are produced locally by bacteria that were below our detection threshold.

Indexed as

Gastrointestinal MicrobiomeMetabolomeAdolescentBacteriaChildDNA, BacterialFemaleFetusGastrointestinal TractGestational AgeHumansInfantInfant, NewbornIntestinesMaleDNA, BacterialGastroenterologyIntermediary metabolismMetabolism

Identifiers

PMID33001863
PMCPMC7710283
OpenAlexW3089634471

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.