Evidence map›Paper›PMID 20048042›Full record

ArticleInfection and immunity2010

Pseudomonas aeruginosa alginate promotes Burkholderia cenocepacia persistence in cystic fibrosis transmembrane conductance regulator knockout mice.

Sangbrita S Chattoraj, Rachana Murthy, Shyamala Ganesan, Joanna B Goldberg, Ying Zhao, Marc B Hershenson, Umadevi S Sajjan

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. How Three Self-Secreted Biofilm Exopolysaccharides ofInternational journal of molecular sciences · 2023
    Review
  6. AIMS microbiology · 2023
    Review
  7. Article
  8. Review
  9. Adaptive Interactions ofPathogens (Basel, Switzerland) · 2021
    Article
  10. AnF1000Research · 2021
    Article
  11. Article
  12. Review
  13. Cystic Fibrosis: Microbiology and Host Response.Pediatric clinics of North America · 2016
    Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  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

7 authors at 2 institutions in 2 countries.

Sangbrita S ChattorajDepartment of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan 48109, USA.
Rachana Murthy
Shyamala Ganesan
Joanna B Goldberg
Ying Zhao
Marc B Hershenson
Umadevi S Sajjan
Laboratoire d’immunologie intégrative du cancer · FRUniversity of Virginia Health System · US

Funding

UVA Digestive Health Research CenterP30DK067629 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI PIZARRO, THERESA TORRES · 2004 to 2008
$5.6M
Co-infections of rhinovirus and bacteria in chronic lung disordersR21HL089772 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SAJJAN, UMADEVI SIVANAPPA · 2009 to 2010
$423k
NHLBI NIH HHS R21 HL089772NIDDK NIH HHS P30 DK067629
6 · The paper itself

Abstract

Pseudomonas aeruginosa, a major respiratory pathogen in cystic fibrosis (CF) patients, facilitates infection by other opportunistic pathogens. Burkholderia cenocepacia, which normally infects adolescent patients, encounters alginate elaborated by mucoid P. aeruginosa. To determine whether P. aeruginosa alginate facilitates B. cenocepacia infection in mice, cystic fibrosis transmembrane conductance regulator knockout mice were infected with B. cenocepacia strain BC7 suspended in either phosphate-buffered saline (BC7/PBS) or P. aeruginosa alginate (BC7/alginate), and the pulmonary bacterial load and inflammation were monitored. Mice infected with BC7/PBS cleared all of the bacteria within 3 days, and inflammation was resolved by day 5. In contrast, mice infected with BC7/alginate showed persistence of bacteria and increased cytokine levels for up to 7 days. Histological examination of the lungs indicated that there was moderate to severe inflammation and pneumonic consolidation in isolated areas at 5 and 7 days postinfection in the BC7/alginate group. Further, alginate decreased phagocytosis of B. cenocepacia by professional phagocytes both in vivo and in vitro. P. aeruginosa alginate also reduced the proinflammatory responses of CF airway epithelial cells and alveolar macrophages to B. cenocepacia infection. The observed effects are specific to P. aeruginosa alginate, because enzymatically degraded alginate or other polyuronic acids did not facilitate bacterial persistence. These observations suggest that P. aeruginosa alginate may facilitate B. cenocepacia infection by interfering with host innate defense mechanisms.

Indexed as

AlginatesAnimalsBurkholderiaBurkholderia InfectionsColony Count, MicrobialCystic FibrosisCystic Fibrosis Transmembrane Conductance RegulatorCytokinesGlucuronic AcidHexuronic AcidsHistocytochemistryLungMiceMice, Inbred C57BLMice, KnockoutMicroscopyAlginatesCystic Fibrosis Transmembrane Conductance RegulatorCytokinesGlucuronic AcidHexuronic Acids

Identifiers

PMID20048042
PMCPMC2825924
OpenAlexW2165681911

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.