Evidence map›Paper›PMID 24265687›Full record

ArticlePloS one2013

Surface-layer protein A (SlpA) is a major contributor to host-cell adherence of Clostridium difficile.

Michelle M Merrigan, Anilrudh Venugopal, Jennifer L Roxas, Farhan Anwar, Michael J Mallozzi, Bryan A P Roxas, Dale N Gerding, V K Viswanathan, Gayatri Vedantam

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

82 citing papers in PubMed, 124 citations in OpenAlex.

  1. Clostridioides difficile pathogenesis and control.Nature reviews. Microbiology · 2026
    Review
  2. Article
  3. Phenotypic analysis of variousApplied and environmental microbiology · 2025
    Article
  4. Review
  5. Article
  6. mSphere · 2024
    Article
  7. Clinical microbiology reviews · 2024
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Microbiology (Reading, England) · 2023
    Review
  15. Review
  16. Article
  17. Article
  18. TheMicrobiology spectrum · 2022
    Article
  19. Review
  20. Review

22 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

9 authors at 5 institutions in 1 country.

Michelle M MerriganDepartment of Microbiology and Immunology, Loyola University Medical Center, Maywood, Illinois, United States of America.
Anilrudh Venugopal
Jennifer L Roxas
Farhan Anwar
Michael J Mallozzi
Bryan A P Roxas
Dale N Gerding
V K Viswanathan
Gayatri Vedantam
University of Arizona · USLoyola University Chicago · USLoyola University Medical Center · USSouthern Arizona VA Health Care System · USSt. John Hospital & Medical Center · US

Funding

Dynamic Regulation of Epithelial Cell Survival by Enteropathogenic E. coliR01AI081742 · NIAID · UNIVERSITY OF ARIZONA · PI VISWANATHAN, V K · 2011 to 2015
$1.9M
Gastrointestinal Colonization of Diarrheagenic Clostridium difficileI01BX001183 · VA · SOUTHERN ARIZONA VA HEALTH CARE SYSTEM · PI VEDANTAM, GAYATRI · 2011 to 2019
–
BLRD VA I01 BX000515BLRD VA I01 BX001183NIAID NIH HHS R01 AI081742
6 · The paper itself

Abstract

Clostridium difficile is a leading cause of antibiotic-associated diarrhea, and a significant etiologic agent of healthcare-associated infections. The mechanisms of attachment and host colonization of C. difficile are not well defined. We hypothesize that non-toxin bacterial factors, especially those facilitating the interaction of C. difficile with the host gut, contribute to the initiation of C. difficile infection. In this work, we optimized a completely anaerobic, quantitative, epithelial-cell adherence assay for vegetative C. difficile cells, determined adherence proficiency under multiple conditions, and investigated C. difficile surface protein variation via immunological and DNA sequencing approaches focused on Surface-Layer Protein A (SlpA). In total, thirty-six epidemic-associated and non-epidemic associated C. difficile clinical isolates were tested in this study, and displayed intra- and inter-clade differences in attachment that were unrelated to toxin production. SlpA was a major contributor to bacterial adherence, and individual subunits of the protein (varying in sequence between strains) mediated host-cell attachment to different extents. Pre-treatment of host cells with crude or purified SlpA subunits, or incubation of vegetative bacteria with anti-SlpA antisera significantly reduced C. difficile attachment. SlpA-mediated adherence-interference correlated with the attachment efficiency of the strain from which the protein was derived, with maximal blockage observed when SlpA was derived from highly adherent strains. In addition, SlpA-containing preparations from a non-toxigenic strain effectively blocked adherence of a phylogenetically distant, epidemic-associated strain, and vice-versa. Taken together, these results suggest that SlpA plays a major role in C. difficile infection, and that it may represent an attractive target for interventions aimed at abrogating gut colonization by this pathogen.

Indexed as

Bacterial AdhesionBacterial ProteinsBacterial ToxinsClostridioides difficileEpithelial CellsGenotypeHumansSpecies SpecificityBacterial ProteinsBacterial Toxinssurface layer protein A, Bacteria

Identifiers

PMID24265687
PMCPMC3827033
OpenAlexW2027550017

What OpenQuestion holds

Textmetadata
LicenceCC0
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.