Evidence map›Paper›PMID 26764907›Full record

ArticlePloS one2016

In Vitro Cultivation of 'Unculturable' Oral Bacteria, Facilitated by Community Culture and Media Supplementation with Siderophores.

Sonia R Vartoukian, Aleksandra Adamowska, Megan Lawlor, Rebecca Moazzez, Floyd E Dewhirst, William G Wade

Abstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
–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

42 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Bridging the gap:Gut microbes · 2026
    Review
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  4. Review
  5. Laser-assisted microbial culturomics.Nature communications · 2025
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  6. Dietary Manganese Modulates Microbiota and Intestinal N-Acylethanolamines in a Sex-Specific Manner in Mice With Diet-Induced Obesity.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  7. Article
  8. Closed genome sequence ofMicrobiology resource announcements · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Isolation, identification, and significance of salivaryFrontiers in cellular and infection microbiology · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. 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

6 authors.

Sonia R VartoukianBarts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
Aleksandra AdamowskaBarts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
Megan LawlorBarts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
Rebecca MoazzezKing's College London Dental Institute, London, United Kingdom.
Floyd E DewhirstThe Forsyth Institute, Cambridge, United States of America.
William G WadeBarts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.

Funding

Mouse Oral Microbiome DatabaseR37DE016937 · NIDCR · ADA FORSYTH INSTITUTE, INC. · PI DEWHIRST, FLOYD E · 2011 to 2020
$8.6M
Cultivation, Nature, Ecology and Pathogenicity of the Uncultivable Oral MicrobiomR01DE024468 · NIDCR · ADA FORSYTH INSTITUTE, INC. · PI ALM, ERIC JOHN, DEWHIRST, FLOYD E · 2014 to 2018
$7.3M
NIDCR NIH HHS R01 DE024468NIDCR NIH HHS R01DE024468NIDCR NIH HHS R37 DE016937NIDCR NIH HHS R37DE016937
6 · The paper itself

Abstract

Over a third of oral bacteria are as-yet-uncultivated in-vitro. Siderophores have been previously shown to enable in-vitro growth of previously uncultivated bacteria. The objective of this study was to cultivate novel oral bacteria in siderophore-supplemented culture media. Various compounds with siderophore activity, including pyoverdines-Fe-complex, desferricoprogen and salicylic acid, were found to stimulate the growth of difficult-to-culture strains Prevotella sp. HOT-376 and Fretibacterium fastidiosum. Furthermore, pyrosequencing analysis demonstrated increased proportions of the as-yet-uncultivated phylotypes Dialister sp. HOT-119 and Megasphaera sp. HOT-123 on mixed culture plates supplemented with siderophores. Therefore a culture model was developed, which incorporated 15 μg siderophore (pyoverdines-Fe-complex or desferricoprogen) or 150 μl neat subgingival-plaque suspension into a central well on agar plates that were inoculated with heavily-diluted subgingival-plaque samples from subjects with periodontitis. Colonies showing satellitism were passaged onto fresh plates in co-culture with selected helper strains. Five novel strains, representatives of three previously-uncultivated taxa (Anaerolineae bacterium HOT-439, the first oral taxon from the Chloroflexi phylum to have been cultivated; Bacteroidetes bacterium HOT-365; and Peptostreptococcaceae bacterium HOT-091) were successfully isolated. All novel isolates required helper strains for growth, implying dependence on a biofilm lifestyle. Their characterisation will further our understanding of the human oral microbiome.

Indexed as

BacteriaBacteriological TechniquesCulture MediaHumansMouthSiderophoresCulture MediaSiderophores

Identifiers

PMID26764907
PMCPMC4713201

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.