Evidence map›Paper›PMID 26991500›Full record

ArticlePloS one2016

Helicobacter pylori Eradication Causes Perturbation of the Human Gut Microbiome in Young Adults.

Theresa Wan-Chen Yap, Han-Ming Gan, Yin-Peng Lee, Alex Hwong-Ruey Leow, Ahmad Najib Azmi, Fritz Francois, Guillermo I Perez-Perez, Mun-Fai Loke, Khean-Lee Goh, Jamuna Vadivelu

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05449028 (Helicobacter Pylori Eradication Therapy in Portugal), which is not on this map. Cited by 68 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 2 pooled it
17.9field-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.

NCT05449028 naunknown statusnot on this mapstarted 2022, after this paper: background citation

Helicobacter Pylori Eradication Therapy in Portugal: Prospective, Randomized, Blind and Multicentre Trial on the Efficacy of Quadruple Therapies and Their Clinical Impact, and Immunological and Gut Microbiota Changes

TypeinterventionalSponsorUnidade Local de Saúde de Coimbra, EPERan2022 to 2024Enrolled230ConditionsHelicobacter Pylori, Gut Microbiota, ImmunologyArmsH. pylori eradication scheme A, H. pylori eradication scheme B, H. pylori eradication scheme C, H. pylori eradication scheme D, H. pylori eradication scheme E
3 · Its place in the literature

Who cites it

68 citing papers in PubMed, 2 syntheses or guidelines pooled it, 140 citations in OpenAlex.

  1. Worldwide research trends on theFrontiers in immunology · 2026
    Pooled it
  2. Pooled it
  3. Evaluation of efficacy and safety ofFrontiers in immunology · 2024
    Trial
  4. Study of the effect of LactobacillusFrontiers in immunology · 2023
    Trial
  5. Trial
  6. Efficacy of compoundBMJ open · 2018
    Trial
  7. Trial
  8. Article
  9. Review
  10. Article
  11. Concomitant versus reverse hybrid therapy for eradication of Helicobacter pylori infection-An open-label randomized controlled trial.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2025
    Article
  12. Article
  13. Article
  14. Journal of the National Cancer Center · 2024
    Review
  15. Article
  16. Environmental and Genetic Determinants of Ankylosing Spondylitis.International journal of molecular sciences · 2024
    Review
  17. Article
  18. Effect ofFrontiers in oncology · 2024
    Review
  19. Article
  20. Article

8 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

10 authors at 5 institutions in 2 countries.

Theresa Wan-Chen YapDepartment of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Han-Ming GanSchool of Science, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia.
Yin-Peng LeeSchool of Science, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia.
Alex Hwong-Ruey LeowDepartment of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Ahmad Najib AzmiDepartment of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Fritz FrancoisNew York University Cancer Institute, New York, NY, 10016, United States of America.
Guillermo I Perez-PerezDepartment of Medicine, New York University School of Medicine, New York, NY 10016, United States of America.
Mun-Fai LokeDepartment of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Khean-Lee GohDepartment of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Jamuna VadiveluDepartment of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
University Malaya Medical Centre · MYMonash University Malaysia · MYNew York University · USUniversity of Malaya · MYUniversiti Sains Islam Malaysia · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAccumulating evidence shows that Helicobacter pylori protects against some metabolic and immunological diseases in which the development of these diseases coincide with temporal or permanent dysbiosis. The aim of this study was to assess the effect of H. pylori eradication on the human gut microbiome.

methodsAs part of the currently on-going ESSAY (Eradication Study in Stable Adults/Youths) study, we collected stool samples from 17 H. pylori-positive young adult (18-30 years-old) volunteers. The same cohort was followed up 6, 12 and 18 months-post H. pylori eradication. The impact of H. pylori on the human gut microbiome pre- and post-eradication was investigated using high throughput 16S rRNA gene (V3-V4 region) sequencing using the Illumina Miseq followed by data analysis using Qiime pipeline.

resultsWe compared the composition and diversity of bacterial communities in the fecal microbiome of the H. pylori-positive volunteers, before and after H. pylori eradication therapy. The 16S rRNA gene was sequenced at an average of 150,000-170,000 reads/sample. The microbial diversity were similar pre- and post-H. pylori eradication with no significant differences in richness and evenness of bacterial species. Despite that the general profile of the gut microbiome was similar pre- and post-eradication, some changes in the bacterial communities at the phylum and genus levels were notable, particularly the decrease in relative abundance of Bacterioidetes and corresponding increase in Firmicutes after H. pylori eradication. The significant increase of short-chain fatty acids (SCFA)-producing bacteria genera could also be associated with increased risk of metabolic disorders.

conclusionsOur preliminary stool metagenomics study shows that eradication of H. pylori caused perturbation of the gut microbiome and may indirectly affect the health of human. Clinicians should be aware of the effect of broad spectrum antibiotics used in H. pylori eradication regimen and be cautious in the clinical management of H. pylori infection, particularly in immunocompromised patients.

Indexed as

AdolescentAdultAnti-Bacterial AgentsCohort StudiesFecesFemaleGastrointestinal MicrobiomeHelicobacter InfectionsHumansMaleMetagenomicsYoung AdultAnti-Bacterial Agents

Identifiers

PMID26991500
PMCPMC4798770
OpenAlexW2302217736

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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.