Evidence map›Paper›PMID 19667048›Full record

ArticleInfection and immunity2009

Hag mediates adherence of Moraxella catarrhalis to ciliated human airway cells.

Rachel Balder, Thomas M Krunkosky, Chi Q Nguyen, Lacey Feezel, Eric R Lafontaine

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
0.9field-weighted citation impact, top 22% 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

27 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Rhinovirus increasesFrontiers in cellular and infection microbiology · 2022
    Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Transcriptional Response of Respiratory Epithelium to Nontuberculous Mycobacteria.American journal of respiratory cell and molecular biology · 2018
    Article
  13. Article
  14. Antibodies againstInfection and immunity · 2017
    Article
  15. Article
  16. Article
  17. Article
  18. Cilia dysfunction in lung disease.Annual review of physiology · 2015
    Review
  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

5 authors at 2 institutions in 1 country.

Rachel BalderDepartment of Infectious Diseases, University of Georgia College of Veterinary Medicine, Athens, Georgia 30602, USA.
Thomas M Krunkosky
Chi Q Nguyen
Lacey Feezel
Eric R Lafontaine
University of Georgia · USGeorgia College & State University · US

Funding

Adherence mechanisms of Moraxella catarrhalisR01AI051477 · NIAID · UNIVERSITY OF TOLEDO HEALTH SCI CAMPUS · PI LAFONTAINE, ERIC R · 2003 to 2007
$1.1M
Adherence mechanisms of Moraxella catarrhalisR56AI051477 · NIAID · UNIVERSITY OF GEORGIA · PI LAFONTAINE, ERIC R · 2010 to 2010
$297k
NIAID NIH HHS AI051477NIAID NIH HHS R01 AI051477NIAID NIH HHS R56 AI051477
6 · The paper itself

Abstract

Moraxella catarrhalis is a human pathogen causing otitis media in infants and respiratory infections in adults, particularly patients with chronic obstructive pulmonary disease. The surface protein Hag (also designated MID) has previously been shown to be a key adherence factor for several epithelial cell lines relevant to pathogenesis by M. catarrhalis, including NCIH292 lung cells, middle ear cells, and A549 type II pneumocytes. In this study, we demonstrate that Hag mediates adherence to air-liquid interface cultures of normal human bronchial epithelium (NHBE) exhibiting mucociliary activity. Immunofluorescent staining and laser scanning confocal microscopy experiments demonstrated that the M. catarrhalis wild-type isolates O35E, O12E, TTA37, V1171, and McGHS1 bind principally to ciliated NHBE cells and that their corresponding hag mutant strains no longer associate with cilia. The hag gene product of M. catarrhalis isolate O35E was expressed in the heterologous genetic background of a nonadherent Haemophilus influenzae strain, and quantitative assays revealed that the adherence of these recombinant bacteria to NHBE cultures was increased 27-fold. These experiments conclusively demonstrate that the hag gene product is responsible for the previously unidentified tropism of M. catarrhalis for ciliated NHBE cells.

Indexed as

Bacterial AdhesionAdhesins, BacterialAdultBacterial ProteinsCell LineEpithelial CellsFluorescent Antibody TechniqueGene DeletionGenetic Complementation TestHaemophilus influenzaeHumansInfantMicroscopy, ConfocalMoraxella catarrhalisRespiratory MucosaVirulence FactorsAdhesins, BacterialBacterial ProteinsHag-1 protein, Moraxella catarrhalisVirulence Factors

Identifiers

PMID19667048
PMCPMC2747927
OpenAlexW2142739412

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.