Evidence map›Paper›PMID 18844989›Full record

ArticleBMC microbiology2008

Enhancing bile tolerance improves survival and persistence of Bifidobacterium and Lactococcus in the murine gastrointestinal tract.

Debbie Watson, Roy D Sleator, Colin Hill, Cormac G M Gahan

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
10.3field-weighted citation impact, top 2% 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

32 citing papers in PubMed, 68 citations in OpenAlex.

  1. Review
  2. Article
  3. Stress Response in Bifidobacteria.Microbiology and molecular biology reviews : MMBR · 2022
    Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Recent Development of ProbioticFrontiers in bioengineering and biotechnology · 2021
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Designer probiotics: Development and applications in gastrointestinal health.World journal of gastrointestinal pathophysiology · 2015
    Review
  15. Review
  16. Review
  17. Review
  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

4 authors at 1 institution in 1 country.

Debbie WatsonAlimentary Pharmabiotic Centre, University College Cork, Cork, Ireland. watson_d@hotmail.com
Roy D Sleator
Colin Hill
Cormac G M Gahan
University College Cork · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe majority of commensal gastrointestinal bacteria used as probiotics are highly adapted to the specialised environment of the large bowel. However, unlike pathogenic bacteria; they are often inadequately equipped to endure the physicochemical stresses of gastrointestinal (GI) delivery in the host. Herein we outline a patho-biotechnology strategy to improve gastric delivery and host adaptation of a probiotic strain Bifidobacterium breve UCC2003 and the generally regarded as safe (GRAS) organism Lactococcus lactis NZ9000.

resultsIn vitro bile tolerance of both strains was significantly enhanced (P < 0.001), following heterologous expression of the Listeria monocytogenes bile resistance mechanism BilE. Strains harbouring bilE were also recovered at significantly higher levels (P < 0.001), than control strains from the faeces and intestines of mice (n = 5), following oral inoculation. Furthermore, a B. breve strain expressing bilE demonstrated increased efficacy relative to the wild-type strain in reducing oral L. monocytogenes infection in mice.

conclusionCollectively the data indicates that bile tolerance can be enhanced in Bifidobacterium and Lactococcus species through rational genetic manipulation and that this can significantly improve delivery to and colonisation of the GI tract.

Indexed as

AnimalsAntibiosisATP-Binding Cassette TransportersBacterial ProteinsBifidobacteriumBileDNA, BacterialElectroporationFecesFemaleGastrointestinal TractGastrointestinal TransitLactococcus lactisListeria monocytogenesListeriosisMiceATP-Binding Cassette TransportersBacterial ProteinsBilE protein, Listeria monocytogenesDNA, Bacterial

Identifiers

PMID18844989
PMCPMC2577680
OpenAlexW2149424095

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.