Evidence map›Paper›PMID 9746590›Full record

ArticleInfection and immunity1998

Experimental infection of Mongolian gerbils with wild-type and mutant Helicobacter pylori strains.

H P Wirth, M H Beins, M Yang, K T Tham, M J Blaser

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
9.1field-weighted citation impact, top 2% 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

56 citing papers in PubMed, 136 citations in OpenAlex.

  1. Anti-Molecules (Basel, Switzerland) · 2025
    Article
  2. Article
  3. A Mouse Model of Helicobacter pylori Infection.Methods in molecular biology (Clifton, N.J.) · 2021
    Article
  4. PeerJ · 2018
    Article
  5. Review
  6. Article
  7. Article
  8. Quantum changes in Helicobacter pylori gene expression accompany host-adaptation.DNA research : an international journal for rapid publication of reports on genes and genomes · 2017
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Mouse models of gastric carcinogenesis.Journal of gastric cancer · 2014
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Multifactorial etiology of gastric cancer.Methods in molecular biology (Clifton, N.J.) · 2012
    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

5 authors at 3 institutions in 2 countries.

H P WirthDivision of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232-2605, USA.
M H Beins
M Yang
K T Tham
M J Blaser
Office of Infectious Diseases · USUniversity Hospital of Zurich · CHVanderbilt University · US

Funding

H PYLORI RECOMBINATION AND GASTRIC COLONIZATIONR01DK053707 · NIDDK · VANDERBILT UNIVERSITY · PI BLASER, MARTIN J · 1997 to 2001
$475k
BIOLOGICAL MARKERS OF H PYLORI INDUCED ONCOGENESISR01DK050837 · NIDDK · VANDERBILT UNIVERSITY · PI BLASER, MARTIN J · 1995 to 1997
–
NIDDK NIH HHS DK 50837NIDDK NIH HHS DK 53707
6 · The paper itself

Abstract

Experimental Helicobacter pylori infection was studied in Mongolian gerbils with fresh human isolates that carry or do not carry cagA (cagA-positive or cagA-negative, respectively), multiply passaged laboratory strains, wild-type strain G1.1, or isogenic ureA, cagA, or vacA mutants of G1.1. Animals were sacrificed 1 to 32 weeks after challenge, the stomach was removed from each animal for quantitative culture, urease test, and histologic testing, and blood was collected for antibody determinations. No colonization occurred after >/=20 in vitro passages of wild-type strain G1.1 or with the ureA mutant of G1.1. In contrast, infection occurred in animals challenged with wild-type G1.1 (99 of 101 animals) or the cagA (25 of 25) or vacA (25 of 29) mutant of G1.1. Infection with G1.1 persisted for at least 8 months. All 15 animals challenged with any of three fresh human cagA-positive isolates became infected, in contrast to only 6 (23%) of 26 animals challenged with one of four fresh human cagA-negative isolates (P < 0.001). Similar to infection in humans, H. pylori colonization of gerbils induced gastric inflammation and a systemic antibody response to H. pylori antigens. These data confirm the utility of gerbils as an animal model of H. pylori infection and indicate the importance of bacterial strain characteristics for successful infection.

Indexed as

Antigens, BacterialMutationAnimalsAntibodies, BacterialBacterial ProteinsBacterial Typing TechniquesFemaleGastritisGerbillinaeHelicobacter InfectionsHelicobacter pyloriHumansMalePyloric AntrumSex FactorsUreaseAntibodies, BacterialAntigens, BacterialBacterial ProteinscagA protein, Helicobacter pyloriUreaseVacA protein, Helicobacter pylori

Identifiers

PMID9746590
PMCPMC108601
OpenAlexW2157670214

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.