Evidence map›Paper›PMID 16543949›Full record

ArticleThe Journal of clinical investigation2006

The neutrophil-activating protein of Helicobacter pylori promotes Th1 immune responses.

Amedeo Amedei, Andrea Cappon, Gaia Codolo, Anna Cabrelle, Alessandra Polenghi, Marisa Benagiano, Elisabetta Tasca, Annalisa Azzurri, Mario Milco D'Elios, Gianfranco Del Prete and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 1 pooled it
18.8field-weighted citation impact, top 1% 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

144 citing papers in PubMed, 1 synthesis or guideline pooled it, 319 citations in OpenAlex.

  1. Pooled it
  2. Gut microbes · 2026
    Article
  3. [Molecular mechanisms of chronic gastric mucosal inflammation induced byZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2026
    Review
  4. Beyond Antibiotics: Alternative Strategies TargetingExpert reviews in molecular medicine · 2026
    Review
  5. Article
  6. Pathogens (Basel, Switzerland) · 2026
    Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Cross-Kingdom Pathogenesis ofMicroorganisms · 2024
    Article
  12. Article
  13. Review
  14. Article
  15. Special Issue "Bacterial Toxins and Cancer".International journal of molecular sciences · 2024
    Article
  16. Review
  17. Effects and mechanisms ofFrontiers in immunology · 2024
    Review
  18. Review
  19. Essential role ofInfection and immunity · 2023
    Article
  20. Immune response modulation in inflammatory bowel diseases byWorld journal of gastroenterology · 2023
    Review

84 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

11 authors at 1 institution in 1 country.

Amedeo AmedeiDepartment of Internal Medicine, University of Florence, Florence, Italy.
Andrea Cappon
Gaia Codolo
Anna Cabrelle
Alessandra Polenghi
Marisa Benagiano
Elisabetta Tasca
Annalisa Azzurri
Mario Milco D'Elios
Gianfranco Del Prete
Marina de Bernard
University of Florence · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Helicobacter pylori neutrophil-activating protein (HP-NAP) is a virulence factor of H. pylori that stimulates in neutrophils high production of oxygen radicals and adhesion to endothelial cells. We report here that HP-NAP is a TLR2 agonist able to induce the expression of IL-12 and IL-23 by neutrophils and monocytes. Addition in culture of HP-NAP, as an immune modulator, to antigen-induced T cell lines resulted in a remarkable increase in the number of IFN-gamma-producing T cells and decrease of IL-4-secreting cells, thus shifting the cytokine profile of antigen-activated human T cells from Th2 to a Th1 cytotoxic phenotype. We also found that in vivo HP-NAP elicited an antigen-specific Th1-polarized T cell response in the gastric mucosa of H. pylori-infected patients. These data indicate HP-NAP as an important factor of H. pylori able to elicit cells of the innate immune system to produce IL-12 and IL-23, and they suggest it as a new tool for promoting Th1 immune responses.

Indexed as

AdultAllergensBacterial ProteinsCD4 AntigensCells, CulturedDendritic CellsFemaleGenes, MHC Class IIGranulocytesHelicobacter pyloriHumansImmunity, InnateInterferon-gammaInterleukin-12Interleukin-23Interleukin-23 Subunit p19AllergensBacterial ProteinsCD4 AntigensIL23A protein, humanInterferon-gammaInterleukin-12Interleukin-23Interleukin-23 Subunit p19Interleukinsneutrophil-activating protein A, Helicobacter pyloriTLR2 protein, humanToll-Like Receptor 2Tumor Necrosis Factor-alpha

Identifiers

PMID16543949
PMCPMC1401483
OpenAlexW2118541088

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.