Evidence map›Paper›PMID 29494270›Full record

ArticleGut microbes2018

When is Helicobacter pylori acquired in populations in developing countries? A birth-cohort study in Bangladeshi children.

Sabine Kienesberger, Guillermo I Perez-Perez, Asalia Z Olivares, Pradip Bardhan, Shafiqul A Sarker, Kh Zahid Hasan, R Bradley Sack, Martin J Blaser

Open access · goldAbstract read
In one paragraph

Article in Gut microbes, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 37 citations in OpenAlex.

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  11. Prevalence of OralClinical and experimental gastroenterology · 2023
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  13. Gastric mucosal precancerous lesions inWorld journal of gastroenterology · 2022
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  19. AsymptomaticNutrients · 2019
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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

8 authors at 5 institutions in 3 countries.

Sabine Kienesbergera Departments of Medicine and Microbiology , New York University School of Medicine , New York , USA.ORCID 0000-0003-3190-3678
Guillermo I Perez-Pereza Departments of Medicine and Microbiology , New York University School of Medicine , New York , USA.ORCID 0000-0002-0131-5798
Asalia Z Olivaresa Departments of Medicine and Microbiology , New York University School of Medicine , New York , USA.
Pradip Bardhanc Nutrition and Clinical Services Division, ICDDR , Dhaka , Bangladesh.
Shafiqul A Sarkerc Nutrition and Clinical Services Division, ICDDR , Dhaka , Bangladesh.
Kh Zahid Hasanc Nutrition and Clinical Services Division, ICDDR , Dhaka , Bangladesh.
R Bradley Sackb Department of International Health, Johns Hopkins University , Baltimore , Maryland , USA.
Martin J Blasera Departments of Medicine and Microbiology , New York University School of Medicine , New York , USA.ORCID 0000-0003-2447-2443
International Centre for Diarrhoeal Disease Research · BDNew York University · USJohns Hopkins University · USUnited States Department of Veterans Affairs · USUniversity of Graz · AT

Funding

Research Training and Education CoreP60MD000538 · NIMHD · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI TRINH-SHEVRIN, CHAU · 2003 to 2017
$21.2M
MATHEMATICAL MODELS OF H PYLORI GASTRIC COLONIZATIONR01GM063270 · NIGMS · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI BLASER, MARTIN J · 2000 to 2013
$3.1M
NIGMS NIH HHS R01 GM063270NIMHD NIH HHS P60 MD000538
6 · The paper itself

Abstract

Helicobacter pylori colonization is prevalent throughout the world, and is predominantly acquired during childhood. In developing countries, >70% of adult populations are colonized with H. pylori and >50% of children become colonized before the age of 10 years. However, the exact timing of acquisition is unknown. We assessed detection of H. pylori acquisition among a birth cohort of 105 children in Mirzapur, Bangladesh. Blood samples collected at time 0 (cord blood), and at 6, 12, 18, and 24 months of life were examined for the presence of IgG and IgA antibodies to whole cell H. pylori antigen and for IgG antibodies to the CagA antigen using specific ELISAs and immunoblotting. Breast milk samples were analyzed for H. pylori-specific IgA antibodies. Cord blood was used to establish maternal colonization status. H. pylori seroprevalence in the mothers was 92.8%. At the end of the two-year follow-up period, 50 (47.6%) of the 105 children were positive for H. pylori in more than one assay. Among the colonized children, CagA prevalence was 78.0%. A total of 58 children seroconverted: 50 children showed persistent colonization and 8 (7.6%) children showed transient seroconversion, but immunoblot analysis suggested that the transient seroconversion observed by ELISA may represent falsely positive results. Acquisition of H. pylori was not influenced by the mother H. pylori status in serum or breastmilk. In this population with high H. pylori prevalence, we confirmed that H. pylori in developing countries is detectable mainly after the first year of life.

Indexed as

Antibodies, BacterialAntigens, BacterialBacterial ProteinsBangladeshCohort StudiesDeveloping CountriesFemaleFetal BloodHelicobacter InfectionsHelicobacter pyloriHumansImmunoglobulin AImmunoglobulin GInfant, NewbornMilk, HumanPepsinogen AAntibodies, BacterialAntigens, BacterialBacterial ProteinscagA protein, Helicobacter pyloriImmunoglobulin AImmunoglobulin GPepsinogen Aacquisitionbreast feedingCagAdeveloping countriesepidemiologyseroconversionserological diagnostic testingseroprevalencetransmission

Identifiers

PMID29494270
PMCPMC6219588
OpenAlexW2793096244

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.