Evidence map›Paper›PMID 20096771›Full record

ArticleMicrobial pathogenesis

Early biofilm formation on microtiter plates is not correlated with the invasive disease potential of Streptococcus pneumoniae.

Anel Lizcano, Tiffany Chin, Karin Sauer, Elaine I Tuomanen, Carlos J Orihuela

Abstract read
In one paragraph

Article in Microbial pathogenesis. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed.

  1. Article
  2. Antibiotics (Basel, Switzerland) · 2023
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Increased Zinc Availability Enhances Initial Aggregation and Biofilm Formation ofFrontiers in cellular and infection microbiology · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. 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.

Anel LizcanoDepartment of Microbiology and Immunology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
Tiffany Chin
Karin Sauer
Elaine I Tuomanen
Carlos J Orihuela

Funding

PROFESSIONAL ONCOLOGY EDUCATION PROGRAMR25CA023944 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI SUZANNE A. GRONEMEYER · 1986 to 2026
$8.3M
Mechanism of PsrP mediated adhesionR01AI078972 · NIAID · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI ORIHUELA, CARLOS J · 2009 to 2013
$1.3M
NCI NIH HHS R25 CA023944NIAID NIH HHS AI078972NIAID NIH HHS R01 AI078972
6 · The paper itself

Abstract

Biofilm formation has been suggested to play an important role during Streptococcus pneumoniae nasopharyngeal colonization and may facilitate progression to pneumonia. To test whether the ability of S. pneumoniae to form biofilms was important for virulence we screened the ability of 30 invasive and 22 non-invasive clinical isolates of serotype 6A and 6B to form early biofilms on polystyrene microtiter plates and infect mice following intranasal and intratracheal challenge. We first determined that no correlation existed between the ability to form early biofilms and whether isolates were collected from healthy carriers or individuals with invasive disease. A disconnect between biofilm forming ability and the capacity to colonize the nasopharynx, cause pneumonia, and enter the bloodstream was also observed in mice. Importantly, S. pneumoniae mutants deficient in the established virulence determinants pneumolysin, CbpA, and hydrogen peroxide formed biofilms normally. Incidentally, we determined that robust biofilm production was dependent on the formation and coalescing of bacterial aggregates on a thin layer of bacteria attached to the plate surface. In summary, these studies suggest that the ability to form early biofilms in vitro does not reflect virulence potential. More complex studies are required to determine if biofilm formation is important for virulence.

Indexed as

AnimalsBacteremiaBacterial ProteinsBacterial Typing TechniquesBiofilmsCarrier StateFemaleHumansHydrogen PeroxideMiceMice, Inbred BALB CNasopharynxPneumonia, PneumococcalSerotypingStreptococcus pneumoniaeStreptolysinsBacterial ProteinsCbpA protein, bacteriaHydrogen PeroxideplY protein, Streptococcus pneumoniaeStreptolysinsVirulence Factors

Identifiers

PMID20096771
PMCPMC2834858

What OpenQuestion holds

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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.