Evidence map›Paper›PMID 22589724›Full record

ArticlePLoS pathogens2012

Age of the association between Helicobacter pylori and man.

Yoshan Moodley, Bodo Linz, Robert P Bond, Martin Nieuwoudt, Himla Soodyall, Carina M Schlebusch, Steffi Bernhöft, James Hale, Sebastian Suerbaum, Lawrence Mugisha and 2 more

Abstract read
In one paragraph

Article in PLoS pathogens, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 173 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
173citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

173 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
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  11. Clinical and experimental gastroenterology · 2026
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  12. Daily dietary patterns associated withFrontiers in nutrition · 2026
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  13. Pathogenicity ofWorld journal of clinical oncology · 2025
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  15. The Controversies in the Relationship BetweenJournal of clinical medicine · 2025
    Review
  16. ThemBio · 2025
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  18. RSC advances · 2025
    Review
  19. Helicobacter pylori Infection in Colombia: Phylogeny, Resistome, and Virulome.APMIS : acta pathologica, microbiologica, et immunologica Scandinavica · 2025
    Article
  20. MicroRNA-Mediated Regulatory Networks inBiochemistry research international · 2025
    Review

113 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

12 authors.

Yoshan MoodleyMax-Planck-Institut für Infektionsbiologie, Department of Molecular Biology, Berlin, Germany. yoshan.moodley@vetmeduni.ac.at
Bodo Linz
Robert P Bond
Martin Nieuwoudt
Himla Soodyall
Carina M Schlebusch
Steffi Bernhöft
James Hale
Sebastian Suerbaum
Lawrence Mugisha
Schalk W van der Merwe
Mark Achtman

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

When modern humans left Africa ca. 60,000 years ago (60 kya), they were already infected with Helicobacter pylori, and these bacteria have subsequently diversified in parallel with their human hosts. But how long were humans infected by H. pylori prior to the out-of-Africa event? Did this co-evolution predate the emergence of modern humans, spanning the species divide? To answer these questions, we investigated the diversity of H. pylori in Africa, where both humans and H. pylori originated. Three distinct H. pylori populations are native to Africa: hpNEAfrica in Afro-Asiatic and Nilo-Saharan speakers, hpAfrica1 in Niger-Congo speakers and hpAfrica2 in South Africa. Rather than representing a sustained co-evolution over millions of years, we find that the coalescent for all H. pylori plus its closest relative H. acinonychis dates to 88-116 kya. At that time the phylogeny split into two primary super-lineages, one of which is associated with the former hunter-gatherers in southern Africa known as the San. H. acinonychis, which infects large felines, resulted from a later host jump from the San, 43-56 kya. These dating estimates, together with striking phylogenetic and quantitative human-bacterial similarities show that H. pylori is approximately as old as are anatomically modern humans. They also suggest that H. pylori may have been acquired via a single host jump from an unknown, non-human host. We also find evidence for a second Out of Africa migration in the last 52,000 years, because hpEurope is a hybrid population between hpAsia2 and hpNEAfrica, the latter of which arose in northeast Africa 36-52 kya, after the Out of Africa migrations around 60 kya.

Indexed as

Evolution, MolecularAfricaAnimalsCatsEmigration and ImmigrationGenetic VariationHelicobacter InfectionsHelicobacter pyloriHumansMolecular Sequence DataPan troglodytesPhylogenyRNA, Ribosomal, 16SRNA, Ribosomal, 16S

Identifiers

PMID22589724
PMCPMC3349757

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.