Evidence map›Paper›PMID 19168652›Full record

ArticleApplied and environmental microbiology2009

Exploring the diversity of the bifidobacterial population in the human intestinal tract.

Francesca Turroni, Elena Foroni, Paola Pizzetti, Vanessa Giubellini, Angela Ribbera, Paolo Merusi, Patrizio Cagnasso, Barbara Bizzarri, Gian Luigi de'Angelis, Fergus Shanahan and 2 more

Abstract read
In one paragraph

Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 166 papers.

0numbers the graph read from it
0cells of the map it votes in
166citing 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

166 citing papers in PubMed.

  1. Trial
  2. Trial
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  5. Global biogeography ofGut microbes · 2026
    Review
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  7. Review
  8. Whole genome sequence analysis ofJournal of animal science and technology · 2026
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  9. Biology · 2026
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  10. Review
  11. Article
  12. Article
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  14. Review
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  16. Review
  17. Genomic Characterization and Safety Assessment ofJournal of microbiology and biotechnology · 2024
    Article
  18. Article
  19. Article
  20. Article

106 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

12 authors.

Francesca TurroniDepartment of Genetics, Biology of Microorganisms, Anthropology and Evolution, University of Parma, Parco Area delle Scienze 11a, 43100 Parma, Italy.
Elena Foroni
Paola Pizzetti
Vanessa Giubellini
Angela Ribbera
Paolo Merusi
Patrizio Cagnasso
Barbara Bizzarri
Gian Luigi de'Angelis
Fergus Shanahan
Douwe van Sinderen
Marco Ventura

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although the health-promoting roles of bifidobacteria are widely accepted, the diversity of bifidobacteria among the human intestinal microbiota is still poorly understood. We performed a census of bifidobacterial populations from human intestinal mucosal and fecal samples by plating them on selective medium, coupled with molecular analysis of selected rRNA gene sequences (16S rRNA gene and internally transcribed spacer [ITS] 16S-23S spacer sequences) of isolated colonies. A total of 900 isolates were collected, of which 704 were shown to belong to bifidobacteria. Analyses showed that the culturable bifidobacterial population from intestinal and fecal samples include six main phylogenetic taxa, i.e., Bifidobacterium longum, Bifidobacterium pseudocatenulatum, Bifidobacterium adolescentis, Bifidobacterium pseudolongum, Bifidobacterium breve, and Bifidobacterium bifidum, and two species mostly detected in fecal samples, i.e., Bifidobacterium dentium and Bifidobacterium animalis subp. lactis. Analysis of bifidobacterial distribution based on age of the subject revealed that certain identified bifidobacterial species were exclusively present in the adult human gut microbiota whereas others were found to be widely distributed. We encountered significant intersubject variability and composition differences between fecal and mucosa-adherent bifidobacterial communities. In contrast, a modest diversification of bifidobacterial populations was noticed between different intestinal regions within the same individual (intrasubject variability). Notably, a small number of bifidobacterial isolates were shown to display a wide ecological distribution, thus suggesting that they possess a broad colonization capacity.

Indexed as

Genetic VariationAge FactorsBifidobacteriumDNA, BacterialDNA, RibosomalDNA, Ribosomal SpacerFecesGastrointestinal TractGenes, rRNAHumansIntestinal MucosaMolecular Sequence DataPhylogenyRNA, BacterialRNA, Ribosomal, 16SSequence Analysis, DNADNA, BacterialDNA, RibosomalDNA, Ribosomal SpacerRNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID19168652
PMCPMC2655441

What OpenQuestion holds

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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.