Evidence map›Paper›PMID 22823934›Full record

ArticleBMC genomics2012

A microarray analysis of gnotobiotic mice indicating that microbial exposure during the neonatal period plays an essential role in immune system development.

Masahiro Yamamoto, Rui Yamaguchi, Kaori Munakata, Kiyoe Takashima, Mitsue Nishiyama, Kyoji Hioki, Yasuyuki Ohnishi, Masao Nagasaki, Seiya Imoto, Satoru Miyano and 2 more

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

25 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Gastrointestinal Microbiome - What We Need to Know in Clinical Practice.GE Portuguese journal of gastroenterology · 2020
    Review
  7. Complex interactions between the microbiome and cancer immune therapy.Critical reviews in clinical laboratory sciences · 2019
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Regulation of Hepatic Drug-Metabolizing Enzymes in Germ-Free Mice by Conventionalization and Probiotics.Drug metabolism and disposition: the biological fate of chemicals · 2016
    Article
  18. Use of Metatranscriptomics in Microbiome Research.Bioinformatics and biology insights · 2016
    Review
  19. Article
  20. Analysis of gene-environment interactions in postnatal development of the mammalian intestine.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
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

12 authors at 4 institutions in 1 country.

Masahiro YamamotoCenter for Kampo Medicine, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Rui Yamaguchi
Kaori Munakata
Kiyoe Takashima
Mitsue Nishiyama
Kyoji Hioki
Yasuyuki Ohnishi
Masao Nagasaki
Seiya Imoto
Satoru Miyano
Atsushi Ishige
Kenji Watanabe
Keio University · JPTokyo University of Science · JPCentral Institute for Experimental Animals · JPTsumura Research Institute (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEpidemiological studies have suggested that the encounter with commensal microorganisms during the neonatal period is essential for normal development of the host immune system. Basic research involving gnotobiotic mice has demonstrated that colonization at the age of 5 weeks is too late to reconstitute normal immune function. In this study, we examined the transcriptome profiles of the large intestine (LI), small intestine (SI), liver (LIV), and spleen (SPL) of 3 bacterial colonization models-specific pathogen-free mice (SPF), ex-germ-free mice with bacterial reconstitution at the time of delivery (0WexGF), and ex-germ-free mice with bacterial reconstitution at 5 weeks of age (5WexGF)-and compared them with those of germ-free (GF) mice.

resultsHundreds of genes were affected in all tissues in each of the colonized models; however, a gene set enrichment analysis method, MetaGene Profiler (MGP), demonstrated that the specific changes of Gene Ontology (GO) categories occurred predominantly in 0WexGF LI, SPF SI, and 5WexGF SPL, respectively. MGP analysis on signal pathways revealed prominent changes in toll-like receptor (TLR)- and type 1 interferon (IFN)-signaling in LI of 0WexGF and SPF mice, but not 5WexGF mice, while 5WexGF mice showed specific changes in chemokine signaling. RT-PCR analysis of TLR-related genes showed that the expression of interferon regulatory factor 3 (Irf3), a crucial rate-limiting transcription factor in the induction of type 1 IFN, prominently decreased in 0WexGF and SPF mice but not in 5WexGF and GF mice.

conclusionThe present study provides important new information regarding the molecular mechanisms of the so-called "hygiene hypothesis".

Indexed as

AnimalsAnimals, NewbornBacteriaCluster AnalysisGene Expression ProfilingGene Expression Regulation, DevelopmentalGerm-Free LifeImmune SystemIntestine, SmallLiverMiceModels, BiologicalMultigene FamilyOligonucleotide Array Sequence AnalysisOrgan SpecificityReverse Transcriptase Polymerase Chain ReactionToll-Like Receptors

Identifiers

PMID22823934
PMCPMC3422195
OpenAlexW2097704232

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.