Evidence map›Paper›PMID 18212073›Full record

ArticleInfection and immunity2008

Outer membrane protein DsrA is the major fibronectin-binding determinant of Haemophilus ducreyi.

Isabelle Leduc, C Dinitra White, Igor Nepluev, Robert E Throm, Stanley M Spinola, Christopher Elkins

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Multiple Class I and Class II Haemophilus ducreyi Strains Cause Cutaneous Ulcers in Children on an Endemic Island.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2018
    Article
  3. Article
  4. Article
  5. Defining Potential Vaccine Targets of Haemophilus ducreyi Trimeric Autotransporter Adhesin DsrA.Monoclonal antibodies in immunodiagnosis and immunotherapy · 2015
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Host-pathogen interplay of Haemophilus ducreyi.Current opinion in infectious diseases · 2010
    Review
  12. Article
  13. 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

6 authors at 4 institutions in 1 country.

Isabelle LeducDepartment of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7031, USA.
C Dinitra White
Igor Nepluev
Robert E Throm
Stanley M Spinola
Christopher Elkins
Duke University · USIndiana University – Purdue University Indianapolis · USNorth Carolina Agricultural and Technical State University · USUniversity of North Carolina at Chapel Hill · US

Funding

Trichomonas Typing SystemU19AI031496 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SPARLING, PHILIP FREDERICK · 1995 to 2014
$24.9M
PATHOGENESIS OF HAEMOPHILUS DUCREYI INFECTIONSR01AI027863 · NIAID · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI SPINOLA, STANLEY M. · 1995 to 2013
$3.8M
PATHOGENESIS OF HAEMOPHILUS DUCREYI INFECTIONSR29AI027863 · NIAID · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI SPINOLA, STANLEY M · 1990 to 1994
–
THE EPIDEMIOLOGY OF STDS IN RURAL NORTH CAROLINAU01AI031496 · NIAID · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI COHEN, MYRON S · 1991 to 1994
–
NIAID NIH HHS AI031496NIAID NIH HHS AI27863-16NIAID NIH HHS R01 AI027863NIAID NIH HHS U19 AI031496
6 · The paper itself

Abstract

The ability to bind extracellular matrix proteins is a critical virulence determinant for skin pathogens. Haemophilus ducreyi, the etiological agent of the genital ulcer disease chancroid, binds extracellular matrix components, including fibronectin (FN). We investigated H. ducreyi FN binding and report several important findings about this interaction. First, FN binding by H. ducreyi was greatly increased in bacteria grown on heme and almost completely inhibited by hemoglobin. Second, wild-type strain 35000HP bound significantly more FN than did a dsrA mutant in two different FN binding assays. Third, the expression of dsrA in the dsrA mutant restored FN binding and conferred the ability to bind FN to a non-FN-binding Haemophilus influenzae strain. Fourth, an anti-DsrA monoclonal antibody partially blocked FN binding by H. ducreyi. The hemoglobin receptor, the collagen-binding protein, the H. ducreyi lectin, the fine-tangle pili, and the outer membrane protein OmpA2 were not involved in H. ducreyi FN binding, since single mutants bound FN as well as the parent strain did. However, the major outer membrane protein may have a minor role in FN binding by H. ducreyi, since a double dsrA momp mutant bound less FN than did the single dsrA mutant. Finally, despite major sequence differences, DsrA proteins from both class I and class II H. ducreyi strains mediated FN and vitronectin binding. We concluded that DsrA is the major factor involved in FN binding by both classes of H. ducreyi strains.

Indexed as

Bacterial Outer Membrane ProteinsFibronectinsGene Expression Regulation, BacterialHaemophilus ducreyiMutationProtein BindingVitronectinBacterial Outer Membrane ProteinsFibronectinsVitronectin

Identifiers

PMID18212073
PMCPMC2292853
OpenAlexW2014508374

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.