Evidence map›Paper›PMID 17121461›Full record

ArticlePLoS pathogens2006

SabA is the H. pylori hemagglutinin and is polymorphic in binding to sialylated glycans.

Marina Aspholm, Farzad O Olfat, Jenny Nordén, Berit Sondén, Carina Lundberg, Rolf Sjöström, Siiri Altraja, Stefan Odenbreit, Rainer Haas, Torkel Wadström and 7 more

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed
11.2field-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

90 citing papers in PubMed, 182 citations in OpenAlex.

  1. Therapeutic suppression ofFrontiers in microbiology · 2026
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  4. Saucerneol D Suppresses the Growth ofCurrent issues in molecular biology · 2025
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  5. Pathogens (Basel, Switzerland) · 2024
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  8. Bacterial chemotaxis in human diseases.Trends in microbiology · 2023
    Review
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  13. Hesperetin Inhibits Expression of Virulence Factors and Growth ofInternational journal of molecular sciences · 2021
    Article
  14. Article
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  16. Virulence of Helicobacter pylori outer membrane proteins: an updated review.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2020
    Review
  17. Journal of the American Heart Association · 2020
    Article
  18. Article
  19. Article
  20. Article

30 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

17 authors at 7 institutions in 4 countries.

Marina AspholmDepartment of Odontology, Section of Oral Microbiology, Umeå University, Umeå, Sweden.
Farzad O Olfat
Jenny Nordén
Berit Sondén
Carina Lundberg
Rolf Sjöström
Siiri Altraja
Stefan Odenbreit
Rainer Haas
Torkel Wadström
Lars Engstrand
Cristina Semino-Mora
Hui Liu
André Dubois
Susann Teneberg
Anna Arnqvist
Thomas Borén
Umeå University · SEUniformed Services University of the Health Sciences · USInstitute of Medical Microbiology and Hygiene · DELund University · SESwedish Institute · SEUniversity of Gothenburg · SEUniversity of Tartu · EE

Funding

BACTERIAL &CHEMICAL CARCINOGENS IN GASTRIC ONCOGENESISR01CA082312 · NCI · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI MERRELL, D. SCOTT · 2000 to 2012
$4.0M
ADAMHA HHS CA82312/ADNCI NIH HHS R01 CA082312
6 · The paper itself

Abstract

Adherence of Helicobacter pylori to inflamed gastric mucosa is dependent on the sialic acid-binding adhesin (SabA) and cognate sialylated/fucosylated glycans on the host cell surface. By in situ hybridization, H. pylori bacteria were observed in close association with erythrocytes in capillaries and post-capillary venules of the lamina propria of gastric mucosa in both infected humans and Rhesus monkeys. In vivo adherence of H. pylori to erythrocytes may require molecular mechanisms similar to the sialic acid-dependent in vitro agglutination of erythrocytes (i.e., sialic acid-dependent hemagglutination). In this context, the SabA adhesin was identified as the sialic acid-dependent hemagglutinin based on sialidase-sensitive hemagglutination, binding assays with sialylated glycoconjugates, and analysis of a series of isogenic sabA deletion mutants. The topographic presentation of binding sites for SabA on the erythrocyte membrane was mapped to gangliosides with extended core chains. However, receptor mapping revealed that the NeuAcalpha2-3Gal-disaccharide constitutes the minimal sialylated binding epitope required for SabA binding. Furthermore, clinical isolates demonstrated polymorphism in sialyl binding and complementation analysis of sabA mutants demonstrated that polymorphism in sialyl binding is an inherent property of the SabA protein itself. Gastric inflammation is associated with periodic changes in the composition of mucosal sialylation patterns. We suggest that dynamic adaptation in sialyl-binding properties during persistent infection specializes H. pylori both for individual variation in mucosal glycosylation and tropism for local areas of inflamed and/or dysplastic tissue.

Indexed as

Adhesins, BacterialAdsorptionAnimalsAntigens, BacterialBacterial AdhesionBinding, CompetitiveBinding SitesCapillariesErythrocytesGangliosidesGastric MucosaGene DeletionHelicobacter InfectionsHelicobacter pyloriHemagglutinationHemagglutininsAdhesins, BacterialAntigens, BacterialGangliosidesHemagglutininsN-Acetylneuraminic AcidOligosaccharidesPolysaccharidesSabA protein, Helicobacter pyloriSialyl Lewis X Antigen

Identifiers

PMID17121461
PMCPMC1626103
OpenAlexW2023491512

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.