Evidence map›Paper›PMID 21984796›Full record

ArticleJournal of bacteriology2011

Hydrogen peroxide-dependent DNA release and transfer of antibiotic resistance genes in Streptococcus gordonii.

Andreas Itzek, Lanyan Zheng, Zhiyun Chen, Justin Merritt, Jens Kreth

Abstract read
In one paragraph

Article in Journal of bacteriology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
–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

36 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Isolation and Characterization ofMicroorganisms · 2024
    Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Magnesium-Dependent Promotion of HJournal of dental research · 2020
    Article
  15. Review
  16. Article
  17. Genetics ofMicrobiology spectrum · 2019
    Article
  18. Review
  19. Review
  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

5 authors.

Andreas ItzekDepartment of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
Lanyan Zheng
Zhiyun Chen
Justin Merritt
Jens Kreth

Funding

The IrvA-Dependent Pathway: A Link Between Stress Adaptation and VirulenceR01DE018893 · NIDCR · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI MERRITT, JUSTIN · 2009 to 2018
$3.0M
Interspecies Streptococcal Antagonisms in Oral BiofilmsR00DE018400 · NIDCR · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI KRETH, JENS · 2009 to 2011
$732k
Interspecies Streptococcal Antagonisms in Oral BiofilmsK99DE018400 · NIDCR · UNIVERSITY OF MINNESOTA · PI KRETH, JENS · 2007 to 2008
$167k
Genetic and biochemical studies of competence regulation by the hdrRM operonR03DE018725 · NIDCR · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI MERRITT, JUSTIN · 2008 to 2009
$147k
NIDCR NIH HHS DE018400NIDCR NIH HHS DE018725NIDCR NIH HHS K99 DE018400NIDCR NIH HHS R00 DE018400NIDCR NIH HHS R01 DE018893NIDCR NIH HHS R03 DE018725
6 · The paper itself

Abstract

Certain oral streptococci produce H(2)O(2) under aerobic growth conditions to inhibit competing species like Streptococcus mutans. Additionally, H(2)O(2) production causes the release of extracellular DNA (eDNA). eDNA can participate in several important functions: biofilm formation and cell-cell aggregation are supported by eDNA, while eDNA can serve as a nutrient and as an antimicrobial agent by chelating essential cations. eDNA contains DNA fragments of a size that has the potential to transfer genomic information. By using Streptococcus gordonii as a model organism for streptococcal H(2)O(2) production, H(2)O(2)-dependent eDNA release was further investigated. Under defined growth conditions, the eDNA release process was shown to be entirely dependent on H(2)O(2). Chromosomal DNA damage seems to be the intrinsic signal for the release, although only actively growing cells were proficient eDNA donors. Interestingly, the process of eDNA production was found to be coupled with the induction of the S. gordonii natural competence system. Consequently, the production of H(2)O(2) triggered the transfer of antibiotic resistance genes. These results suggest that H(2)O(2) is potentially much more than a simple toxic metabolic by-product; rather, its production could serve as an important environmental signal that facilitates species evolution by transfer of genetic information and an increase in the mutation rate.

Indexed as

Drug Resistance, MicrobialGene Transfer, HorizontalAnti-Bacterial AgentsBacterial ProteinsDNA, BacterialHydrogen PeroxideStreptococcus gordoniiAnti-Bacterial AgentsBacterial ProteinsDNA, BacterialHydrogen Peroxide

Identifiers

PMID21984796
PMCPMC3232836

What OpenQuestion holds

Textmetadata
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.