Evidence map›Paper›PMID 25135687›Full record

ArticleInfection and immunity2014

Contributions of NanI sialidase to Caco-2 cell adherence by Clostridium perfringens type A and C strains causing human intestinal disease.

Jihong Li, Bruce A McClane

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

32 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. The biology and pathogenicity ofMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  6. Article
  7. Article
  8. Sialidase Inhibitors with Different Mechanisms.Journal of medicinal chemistry · 2022
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Sialidases FromFrontiers in cellular and infection microbiology · 2019
    Review
  16. Article
  17. Review
  18. Article
  19. Enterotoxic Clostridia:Microbiology spectrum · 2018
    Article
  20. Review
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

2 authors at 1 institution in 1 country.

Jihong LiDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
Bruce A McClaneDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA bamcc@pitt.edu.
University of Pittsburgh · US

Funding

Vaccine strategy for broad spectrum protection agains non-typhoidal salmonellU54AI057168 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI LEVINE, MYRON MAX · 2003 to 2013
$91.5M
Mechanisms of Action of C. Perfringens EnterotoxinR37AI019844 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI MC CLANE, BRUCE A · 2005 to 2014
$3.0M
NanI sialidase enhances C. perfringens host cell adherence and toxin actionR03AI105635 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LI, JIHONG · 2013 to 2014
$152k
NIAID NIH HHS 2U54AI057168-10NIAID NIH HHS R03 AI105635NIAID NIH HHS R03 AI105635-02NIAID NIH HHS R37 AI019844NIAID NIH HHS R37 AI19844-32NIAID NIH HHS U54 AI057168
6 · The paper itself

Abstract

Previous studies showed that Clostridium perfringens type D animal disease strain CN3718 uses NanI sialidase for adhering to enterocyte-like Caco-2 cells. The current study analyzed whether NanI is similarly important when type A and C human intestinal disease strains attach to Caco-2 cells. A PCR survey determined that the nanI gene was absent from typical type A food poisoning (FP) strains carrying a chromosomal enterotoxin (CPE) gene or the genetically related type C Darmbrand (Db) strains. However, the nanI gene was present in type A strains from healthy humans, type A strains causing CPE-associated antibiotic-associated diarrhea (AAD) or sporadic diarrhea (SD), and type C Pig-Bel strains. Consistent with NanI sialidase being the major C. perfringens sialidase when produced, FP and Db strains had little supernatant sialidase activity compared to other type A or C human intestinal strains. All type A and C human intestinal strains bound to Caco-2 cells, but NanI-producing strains had higher attachment levels. When produced, NanI can contribute to host cell attachment of human intestinal disease strains, since a nanI null mutant constructed in type A SD strain F4969 had lower Caco-2 cell adhesion than wild-type F4969 or a complemented strain. Further supporting a role for NanI in host cell attachment, sialidase inhibitors reduced F4969 adhesion to Caco-2 cells. Collectively, these results suggest that NanI may contribute to the intestinal attachment and colonization needed for the chronic diarrhea of CPE-associated AAD and SD, but this sialidase appears to be dispensable for the acute pathogenesis of type A FP or type C enteritis necroticans.

Indexed as

Bacterial AdhesionCaco-2 CellsClostridium InfectionsClostridium perfringensGene Expression Regulation, BacterialGene Expression Regulation, EnzymologicHumansIntestinal DiseasesMutationNeuraminidaseNeuraminidase

Identifiers

PMID25135687
PMCPMC4249343
OpenAlexW2318759050

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.