Evidence map›Paper›PMID 22669634›Full record

ArticleApplied microbiology and biotechnology2013

Non-invasive determination of conjugative transfer of plasmids bearing antibiotic-resistance genes in biofilm-bound bacteria: effects of substrate loading and antibiotic selection.

Hongyan Ma, James D Bryers

Abstract read
In one paragraph

Article in Applied microbiology and biotechnology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
0.9field-weighted citation impact, top 26% 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, 63 citations in OpenAlex.

  1. Review
  2. Article
  3. Efficacy of Chlorogenic Acid Combined With Cefazolin Against Methicillin-ResistantThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2025
    Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Bacterial driver-passenger model in biofilms: a new mechanism in the development of colorectal cancer.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2022
    Review
  11. Biofilm and Small Colony Variants-An Update onInternational journal of molecular sciences · 2022
    Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Dissecting the effects of antibiotics on horizontal gene transfer: Analysis suggests a critical role of selection dynamics.BioEssays : news and reviews in molecular, cellular and developmental biology · 2016
    Review
  20. Polymeric nanofiber coating with tunable combinatorial antibiotic delivery prevents biofilm-associated infection in vivo.Proceedings of the National Academy of Sciences of the United States of America · 2016
    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

2 authors at 1 institution in 1 country.

Hongyan MaDepartment of Chemical Engineering, University of Washington, Seattle, WA 98195-5061, USA.
James D Bryers
University of Washington · US

Funding

Biomaterials that Prevent Biofilm Colonization and Device-based InfectionsR01EB007575 · NIBIB · UNIVERSITY OF WASHINGTON · PI BRYERS, JAMES D. · 2009 to 2012
$1.7M
Effects of Shear on Specific Adhesion Receptor Expression and Binding in the BactR03AI079461 · NIAID · UNIVERSITY OF WASHINGTON · PI BRYERS, JAMES D. · 2009 to 2010
$147k
NIAID NIH HHS R03 AI079461NIBIB NIH HHS R01 EB007575
6 · The paper itself

Abstract

Biofilms cause much of all human microbial infections. Attempts to eradicate biofilm-based infections rely on disinfectants and antibiotics. Unfortunately, biofilm bacteria are significantly less responsive to antibiotic stressors than their planktonic counterparts. Sublethal doses of antibiotics can actually enhance biofilm formation. Here, we have developed a non-invasive microscopic image analyses to quantify plasmid conjugation within a developing biofilm. Corroborating destructive samples were analyzed by a cultivation-independent flow cytometry analysis and a selective plate count method to cultivate transconjugants. Increases in substrate loading altered biofilm 3-D architecture and subsequently affected the frequency of plasmid conjugation (decreases at least two times) in the absence of any antibiotic selective pressure. More importantly, donor populations in biofilms exposed to a sublethal dose of kanamycin exhibited enhanced transfer efficiency of plasmids containing the kanamycin resistance gene, up to tenfold. However, when stressed with a different antibiotic, imipenem, transfer of plasmids containing the kan(R+) gene was not enhanced. These preliminary results suggest biofilm bacteria "sense" antibiotics to which they are resistant, which enhances the spread of that resistance. Confocal scanning microscopy coupled with our non-invasive image analysis was able to estimate plasmid conjugative transfer efficiency either averaged over the entire biofilm landscape or locally with individual biofilm clusters.

Indexed as

Conjugation, GeneticDrug Resistance, BacterialGene Transfer, HorizontalAnti-Bacterial AgentsBiofilmsColony Count, MicrobialFlow CytometryHumansImage Processing, Computer-AssistedMicroscopy, ConfocalPlasmidsPseudomonas putidaSelection, GeneticAnti-Bacterial Agents

Identifiers

PMID22669634
PMCPMC3465625
OpenAlexW2063516356

What OpenQuestion holds

Textmetadata
LicenceTDM
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.