Evidence map›Paper›PMID 26940566›Full record

ArticleBMC gastroenterology2016

Inoculation with enterococci does not affect colon inflammation in the multi-drug resistance 1a-deficient mouse model of IBD.

Matthew P G Barnett, Yvonne E M Dommels, Christine A Butts, Shuotun Zhu, Warren C McNabb, Nicole C Roy

Open access · goldAbstract read
In one paragraph

Article in BMC gastroenterology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.6field-weighted citation impact, top 23% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. Review
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 at 3 institutions in 1 country.

Matthew P G BarnettFood Nutrition & Health Team, Food & Bio-based Products Group, AgResearch, Palmerston North, 4474, New Zealand. matthew.barnett@agresearch.co.nz.
Yvonne E M DommelsFood and Nutrition, Food Innovation, Plant & Food Research, Palmerston North, 4474, New Zealand. yvonne@dommels.org.
Christine A ButtsFood and Nutrition, Food Innovation, Plant & Food Research, Palmerston North, 4474, New Zealand. chrissie.butts@plantandfood.co.nz.
Shuotun ZhuDiscipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, 1023, New Zealand. st.zhu@auckland.ac.nz.
Warren C McNabbAgResearch, Palmerston North, 4474, New Zealand. warren.mcnabb@agresearch.co.nz.
Nicole C RoyFood Nutrition & Health Team, Food & Bio-based Products Group, AgResearch, Palmerston North, 4474, New Zealand. nicole.roy@agresearch.co.nz.
AgResearch · NZPlant & Food Research · NZUniversity of Auckland · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIntestinal bacteria are thought to play a role in the pathogenesis of human inflammatory bowel disease (IBD). We investigated whether oral inoculation with specific intestinal bacteria increased colon inflammation in the multi-drug resistance 1a-deficient (Mdr1a (-/-) ) mouse model of IBD.

methodsFive-week-old Mdr1a (-/-) mice (FVB background) and FVB mice were randomly assigned to one of two treatment groups (Control or Inoculation, n = 12 per group). All mice were fed AIN-76A rodent diet, and mice in the Inoculation groups also received a single oral bacterial inoculation consisting of twelve cultured Enterococcus species combined with conventional intestinal flora obtained from the gastrointestinal tract of healthy mice (EF.CIF). Body weight, food intake, and disease activity index (DAI) were assessed throughout the study, and at 21 or 24 weeks of age, inflammation was assessed post-mortem by determining colon length and histological injury score (HIS), and plasma serum amyloid A (SAA).

resultsMdr1a (-/-) mice consumed more food than FVB mice at 13 weeks of age (P < 0.05). There was also a significant effect of genotype on body weight, with Mdr1a (-/-) mice weighing less than FVB mice throughout the study (P < 0.05) regardless of treatment, but there was no effect of inoculation on body weight (P > 0.25). Colon HIS of Mdr1a (-/-) mice was significantly higher than that of FVB mice in the Control (9.3 ± 4.7 (mean ± SD) vs. 0.58 ± 0.51; P < 0.001) and Inoculation (6.7 ± 5.1 vs. 0.92 ± 0.39; P < 0.001) groups. There was no difference in colon HIS of Mdr1a (-/-) mice in the Control group compared with Mdr1a (-/-) mice in the Inoculation group (P = 0.25), nor was there any difference in within-group variation of colon HIS in these two Mdr1a (-/-) groups. DAI was higher in Mdr1a (-/-) mice than in FVB mice, but there was no effect of treatment in either strain, nor were there any differences in colon length or plasma SAA.

conclusionsInoculation of Mdr1a (-/-) mice with the EF.CIF inoculum described here does not increase colon inflammation or reduce the observed variability of inflammation.

Indexed as

EnterococcusAnimalsATP Binding Cassette Transporter, Subfamily BBody WeightColitisColonDietDisease Models, AnimalFeeding BehaviorInflammationInflammatory Bowel DiseasesMiceMice, KnockoutSerum Amyloid A ProteinATP Binding Cassette Transporter, Subfamily Bmultidrug resistance protein 3Serum Amyloid A Protein

Identifiers

PMID26940566
PMCPMC4778357
OpenAlexW2289850236

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.