Evidence map›Paper›PMID 19470746›Full record

ArticleInfection and immunity2009

The Acinetobacter baumannii 19606 OmpA protein plays a role in biofilm formation on abiotic surfaces and in the interaction of this pathogen with eukaryotic cells.

Jennifer A Gaddy, Andrew P Tomaras, Luis A Actis

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 306 papers.

0numbers the graph read from it
0cells of the map it votes in
306citing papers in PubMed
5.2field-weighted citation impact, top 3% 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

306 citing papers in PubMed, 471 citations in OpenAlex.

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246 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Jennifer A GaddyDepartment of Microbiology, Miami University, Oxford, OH 45056, USA.
Andrew P Tomaras
Luis A Actis
Miami University · US

Funding

Study of iron acquisition in Acinetobacter baumanniiR01AI070174 · NIAID · MIAMI UNIVERSITY OXFORD · PI ACTIS, LUIS A · 2007 to 2011
$1.4M
NIAID NIH HHS AI070174NIAID NIH HHS R01 AI070174
6 · The paper itself

Abstract

The ability of Acinetobacter baumannii to adhere to and persist on surfaces as biofilms could be central to its pathogenicity. The production of pili and a biofilm-associated protein and the expression of antibiotic resistance are needed for robust biofilm formation on abiotic and biotic surfaces. This multistep process also depends on the expression of transcriptional regulatory functions, some of which could sense nutrients available to cells. This report extends previous observations by showing that although outer membrane protein A (OmpA) of A. baumannii 19606 plays a partial role in the development of robust biofilms on plastic, it is essential for bacterial attachment to Candida albicans filaments and A549 human alveolar epithelial cells. In contrast to abiotic surfaces, the interaction with biotic surfaces is independent of the CsuA/BABCDE-mediated pili. The interaction of A. baumannii 19606 with fungal and epithelial cells also results in their apoptotic death, a response that depends on the direct contact of bacteria with these two types of eukaryotic cells. Furthermore, the bacterial adhesion phenotype correlates with the ability of bacteria to invade A549 epithelial cells. Interestingly, the killing activity of cell-free culture supernatants proved to be protease and temperature sensitive, suggesting that its cytotoxic activity is due to secreted proteins, some of which are different from OmpA.

Indexed as

Acinetobacter baumanniiApoptosisBacterial Outer Membrane ProteinsBacterial ProteinsBiofilmsCandida albicansCell LineEnzyme StabilityEpithelial CellsEukaryotic CellsFimbriae, BacterialHot TemperatureHumansPeptide HydrolasesBacterial Outer Membrane ProteinsBacterial ProteinsOMPA outer membrane proteinsPeptide Hydrolases

Identifiers

PMID19470746
PMCPMC2715673
OpenAlexW2126480284

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.