Evidence map›Paper›PMID 27045926›Full record

ArticleThe American journal of gastroenterology2016

Metagenomics Reveals Dysbiosis and a Potentially Pathogenic N. flavescens Strain in Duodenum of Adult Celiac Patients.

Valeria D'Argenio, Giorgio Casaburi, Vincenza Precone, Chiara Pagliuca, Roberta Colicchio, Daniela Sarnataro, Valentina Discepolo, Sangman M Kim, Ilaria Russo, Giovanna Del Vecchio Blanco and 10 more

Open access · greenAbstract read
In one paragraph

Article in The American journal of gastroenterology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 2 pooled it
15.1field-weighted citation impact, top 1% 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

90 citing papers in PubMed, 2 syntheses or guidelines pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Gut microbes · 2026
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  16. Variations in gut microbiota in celiac disease patients: a systematic review.Gastroenterology and hepatology from bed to bench · 2025
    Review
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  18. Article
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30 more citing papers are in PubMed but not listed here.

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

20 authors at 8 institutions in 2 countries.

Valeria D'ArgenioCEINGE-Biotecnologie Avanzate, Naples, Italy.
Giorgio CasaburiCEINGE-Biotecnologie Avanzate, Naples, Italy.
Vincenza PreconeCEINGE-Biotecnologie Avanzate, Naples, Italy.
Chiara PagliucaCEINGE-Biotecnologie Avanzate, Naples, Italy.
Roberta ColicchioDepartment of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, Naples, Italy.
Daniela SarnataroCEINGE-Biotecnologie Avanzate, Naples, Italy.
Valentina DiscepoloCEINGE-Biotecnologie Avanzate, Naples, Italy.
Sangman M KimDepartment of Medicine and the University of Chicago Celiac Disease Center, University of Chicago, Chicago, Illinois, USA.
Ilaria RussoDepartment of Medicine and Surgery, University of Salerno, Salerno, Italy.
Giovanna Del Vecchio BlancoDepartment of System Medicine, University of Rome Tor Vergata, Rome, Italy.
David S HornerDepartment of Biosciences, University of Milan, Milan, Italy.
Matteo ChiaraDepartment of Biosciences, University of Milan, Milan, Italy.
Graziano PesoleInstitute of Biomembranes and Bioenergetics, National Research Council, Bari, Italy.
Paola SalvatoreCEINGE-Biotecnologie Avanzate, Naples, Italy.
Giovanni MonteleoneDepartment of System Medicine, University of Rome Tor Vergata, Rome, Italy.
Carolina CiacciDepartment of Medicine and Surgery, University of Salerno, Salerno, Italy.
Gregory J CaporasoNorthern Arizona University, Flagstaff, Arizona, USA.
Bana JabrìDepartment of Medicine and the University of Chicago Celiac Disease Center, University of Chicago, Chicago, Illinois, USA.
Francesco SalvatoreCEINGE-Biotecnologie Avanzate, Naples, Italy.
Lucia SacchettiCEINGE-Biotecnologie Avanzate, Naples, Italy.
Ceinge Biotecnologie Avanzate (Italy) · ITUniversity of Naples Federico II · ITUniversity of Chicago · USUniversity of Milan · ITUniversity of Rome Tor Vergata · ITUniversity of Salerno · ITNorthern Arizona University · USUniversity of Bari Aldo Moro · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesCeliac disease (CD)-associated duodenal dysbiosis has not yet been clearly defined, and the mechanisms by which CD-associated dysbiosis could concur to CD development or exacerbation are unknown. In this study, we analyzed the duodenal microbiome of CD patients.

methodsThe microbiome was evaluated in duodenal biopsy samples of 20 adult patients with active CD, 6 CD patients on a gluten-free diet, and 15 controls by DNA sequencing of 16S ribosomal RNA libraries. Bacterial species were cultured, isolated and identified by mass spectrometry. Isolated bacterial species were used to infect CaCo-2 cells, and to stimulate normal duodenal explants and cultured human and murine dendritic cells (DCs). Inflammatory markers and cytokines were evaluated by immunofluorescence and ELISA, respectively.

resultsProteobacteria was the most abundant and Firmicutes and Actinobacteria the least abundant phyla in the microbiome profiles of active CD patients. Members of the Neisseria genus (Betaproteobacteria class) were significantly more abundant in active CD patients than in the other two groups (P=0.03). Neisseria flavescens (CD-Nf) was the most abundant Neisseria species in active CD duodenum. Whole-genome sequencing of CD-Nf and control-Nf showed genetic diversity of the iron acquisition systems and of some hemoglobin-related genes. CD-Nf was able to escape the lysosomal compartment in CaCo-2 cells and to induce an inflammatory response in DCs and in ex-vivo mucosal explants.

conclusionsMarked dysbiosis and an abundance of a peculiar CD-Nf strain characterize the duodenal microbiome in active CD patients thus suggesting that the CD-associated microbiota could contribute to the many inflammatory signals in this disorder.

Indexed as

MetagenomicsActinobacteriaAdultBiopsyCaco-2 CellsCeliac DiseaseDiet, Gluten-FreeDuodenumDysbiosisEnzyme-Linked Immunosorbent AssayFemaleFluorescent Antibody TechniqueHumansItalyMaleMicrobiota

Identifiers

PMID27045926
PMCPMC4897008
OpenAlexW2329639007

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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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.