Evidence map›Paper›PMID 23840402›Full record

ArticlePloS one2013

Increase of faecal tryptic activity relates to changes in the intestinal microbiome: analysis of Crohn's disease with a multidisciplinary platform.

Tore Midtvedt, Eugene Zabarovsky, Elisabeth Norin, Johan Bark, Rinat Gizatullin, Vladimir Kashuba, Olle Ljungqvist, Veronika Zabarovska, Roland Möllby, Ingemar Ernberg

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. The Role of Proteolysis in Amyloidosis.International journal of molecular sciences · 2022
    Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Fecal Serine Protease Profiling in Inflammatory Bowel Diseases.Frontiers in cellular and infection microbiology · 2020
    Article
  12. Plasma amino acid profiles in dogs with inflammatory bowel disease.Journal of veterinary internal medicine · 2019
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Manipulating the gut microbiota to maintain health and treat disease.Microbial ecology in health and disease · 2015
    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

10 authors at 3 institutions in 1 country.

Tore MidtvedtDepartment of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
Eugene Zabarovsky
Elisabeth Norin
Johan Bark
Rinat Gizatullin
Vladimir Kashuba
Olle Ljungqvist
Veronika Zabarovska
Roland Möllby
Ingemar Ernberg
Karolinska Institutet · SEÖrebro University Hospital · SESophiahemmet Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate-by molecular, classical and functional methods-the microbiota in biopsies and faeces from patients with active Crohn's disease (CD) and controls.

designThe microbiota in biopsies was investigated utilizing a novel molecular method and classical cultivation technology. Faecal samples were investigated by classical technology and four functional methods, reflecting alterations in short chain fatty acids pattern, conversion of cholesterol and bilirubin and inactivation of trypsin.

resultsBy molecular methods we found more than 92% similarity in the microbiota on the biopsies from the two groups. However, 4.6% of microbes found in controls were lacking in CD patients. Furthermore, NotI representation libraries demonstrate two different clusters representing CD patients and controls, respectively. Utilizing conventional technology, Bacteroides (alt. Parabacteroides) was less frequently detected in the biopsies from CD patients than from controls. A similar reduction in the number of Bacteroides was found in faecal samples. Bacteroides is the only group of bacteria known to be able to inactivate pancreatic trypsin. Faecal tryptic activity was high in CD patients, and inversely correlated to the levels of Bacteroides.

conclusionsCD patients have compositional and functional alterations in their intestinal microbiota, in line with the global description hypothesis rather than the candidate microorganism theory. The most striking functional difference was high amount of faecal tryptic activity in CD patients, inversely correlated to the levels of Bacteroides in faeces.

Indexed as

MicrobiotaAdultAgedBacteroidesCase-Control StudiesCrohn DiseaseEscherichia coliFatty AcidsFecesFemaleHumansMaleMiddle AgedTrypsinFatty AcidsTrypsin

Identifiers

PMID23840402
PMCPMC3688706
OpenAlexW1987261603

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.