Evidence map›Paper›PMID 30258073›Full record

ArticleScientific reports2018

Deletion of BmoR affects the expression of genes related to thiol/disulfide balance in Bacteroides fragilis.

Felipe L Teixeira, Heidi Pauer, Scarlathe B Costa, C Jeffrey Smith, Regina M C P Domingues, Edson R Rocha, Leandro A Lobo

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

4 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
  2. Lessons from the model gut BacteroidalesJournal of bacteriology · 2025
    Review
  3. Article
  4. GutGut microbes
    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

7 authors at 2 institutions in 2 countries.

Felipe L TeixeiraDepartamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. teixeirafl@micro.ufrj.br.
Heidi PauerDepartamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Scarlathe B CostaDepartamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
C Jeffrey SmithDepartment of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
Regina M C P DominguesDepartamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Edson R RochaDepartment of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA.
Leandro A LoboDepartamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. lobol@micro.ufrj.br.
Universidade Federal do Rio de Janeiro · BREast Carolina University · US

Funding

ROLE OF B.FRAGILIS OXYGEN STRESS RESPONSE IN INFECTIONR01AI040588 · NIAID · EAST CAROLINA UNIVERSITY · PI SMITH, CHARLES J. · 1999 to 2014
$3.5M
Strategies of Bacteroides fragilis to acquire iron in the intestinal tract.R21AI125921 · NIAID · EAST CAROLINA UNIVERSITY · PI ROCHA, EDSON R · 2017 to 2018
$406k
ROLE OF B.FRAGILIS OXYGEN STRESS RESPONSE IN INFECTIONR56AI040588 · NIAID · EAST CAROLINA UNIVERSITY · PI ROCHA, EDSON R, SMITH, CHARLES J. · 2009 to 2009
$334k
NIAID NIH HHS R01 AI040588NIAID NIH HHS R21 AI125921NIAID NIH HHS R56 AI040588
6 · The paper itself

Abstract

Bacteroides fragilis, an opportunistic pathogen and commensal bacterium in the gut, is one the most aerotolerant species among strict anaerobes. However, the mechanisms that control gene regulation in response to oxidative stress are not completely understood. In this study, we show that the MarR type regulator, BmoR, regulates the expression of genes involved in the homeostasis of intracellular redox state. Transcriptome analysis showed that absence of BmoR leads to altered expression in total of 167 genes. Sixteen of these genes had a 2-fold or greater change in their expression. Most of these genes are related to LPS biosynthesis and carbohydrates metabolism, but there was a significant increase in the expression of genes related to the redox balance inside the cell. A pyridine nucleotide-disulfide oxidoreductase located directly upstream of bmoR was shown to be repressed by direct binding of BmoR to the promoter region. The expression of two other genes, coding for a thiosulphate:quinone-oxidoreductase and a thioredoxin, are indirectly affected by bmoR mutation during oxygen exposure. Phenotypic assays showed that BmoR is important to maintain the thiol/disulfide balance in the cell, confirming its relevance to B. fragilis response to oxidative stress.

Indexed as

Bacteroides fragilisGene DeletionGene Expression Regulation, BacterialRepressor ProteinsBacterial ProteinsDisulfidesGene Expression ProfilingOxidation-ReductionOxidative StressSulfhydryl CompoundsBacterial ProteinsDisulfidesRepressor ProteinsSulfhydryl Compounds

Identifiers

PMID30258073
PMCPMC6158253
OpenAlexW2892039244

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.