Evidence map›Paper›PMID 38944645›Full record

SynthesisNPJ biofilms and microbiomes2024

Metaproteomic portrait of the healthy human gut microbiota.

Alessandro Tanca, Antonio Palomba, Giovanni Fiorito, Marcello Abbondio, Daniela Pagnozzi, Sergio Uzzau

Erratum issuedAbstract readMeta-Analysis
In one paragraph

Synthesis in NPJ biofilms and microbiomes, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Human-Centered Innovation: Precision Nutrition and the Future of Food.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  8. Gut microbiota in health and disease.Molecular biomedicine · 2026
    Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Alessandro TancaDepartment of Biomedical Sciences, University of Sassari, Sassari, Italy.ORCID http://orcid.org/0000-0002-6066-7048
Antonio PalombaPorto Conte Ricerche, Science and Technology Park of Sardinia, Tramariglio, Alghero, Italy.ORCID http://orcid.org/0000-0001-7380-2934
Giovanni FioritoClinical Bioinformatic Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy.
Marcello AbbondioDepartment of Biomedical Sciences, University of Sassari, Sassari, Italy.
Daniela PagnozziPorto Conte Ricerche, Science and Technology Park of Sardinia, Tramariglio, Alghero, Italy.
Sergio UzzauDepartment of Biomedical Sciences, University of Sassari, Sassari, Italy. uzzau@uniss.it.ORCID http://orcid.org/0000-0001-6246-2794

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gut metaproteomics can provide direct evidence of microbial functions actively expressed in the colonic environments, contributing to clarify the role of the gut microbiota in human physiology. In this study, we re-analyzed 10 fecal metaproteomics datasets of healthy individuals from different continents and countries, with the aim of identifying stable and variable gut microbial functions and defining the contribution of specific bacterial taxa to the main metabolic pathways. The "core" metaproteome included 182 microbial functions and 83 pathways that were identified in all individuals analyzed. Several enzymes involved in glucose and pyruvate metabolism, along with glutamate dehydrogenase, acetate kinase, elongation factors G and Tu and DnaK, were the proteins with the lowest abundance variability in the cohorts under study. On the contrary, proteins involved in chemotaxis, response to stress and cell adhesion were among the most variable functions. Random-effect meta-analysis of correlation trends between taxa, functions and pathways revealed key ecological and molecular associations within the gut microbiota. The contribution of specific bacterial taxa to the main biological processes was also investigated, finding that Faecalibacterium is the most stable genus and the top contributor to anti-inflammatory butyrate production in the healthy gut microbiota. Active production of other mucosal immunomodulators facilitating host tolerance was observed, including Roseburia flagellin and lipopolysaccharide biosynthetic enzymes expressed by members of Bacteroidota. Our study provides a detailed picture of the healthy human gut microbiota, contributing to unveil its functional mechanisms and its relationship with nutrition, immunity, and environmental stressors.

Indexed as

BacteriaBacterial ProteinsFecesGastrointestinal MicrobiomeProteomicsHealthy VolunteersHumansMetabolic Networks and PathwaysProteomeBacterial ProteinsProteome

Identifiers

PMID38944645
PMCPMC11214629

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.