Evidence map›Paper›PMID 21248183›Full record

Trial reportThe American journal of clinical nutrition2011

Vitamin A supplementation modifies the association between mucosal innate and adaptive immune responses and resolution of enteric pathogen infections.

Kurt Z Long, José Ignacio Santos, Jorge L Rosado, Teresa Estrada-Garcia, Meredith Haas, Abdullah Al Mamun, Herbert L DuPont, Nanda N Nanthakumar

Abstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in The American journal of clinical nutrition, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The gut microbiome: a core regulator of metabolism.The Journal of endocrinology · 2023
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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 7 institutions in 3 countries.

Kurt Z LongNutrition, Environmental Health, Disease and Injury Control Unit, School of Population Health, University of Queensland, Queensland, Australia. k.long@uq.edu.au
José Ignacio Santos
Jorge L Rosado
Teresa Estrada-Garcia
Meredith Haas
Abdullah Al Mamun
Herbert L DuPont
Nanda N Nanthakumar
The University of Queensland · AUAutonomous University of Queretaro · MXCentro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional · MXDePauw University · USHarvard University Press · USNational Center for Infectious Diseases · USUniversidad Nacional Autónoma de México · MX

Funding

ROLE OF DIETARY CONSTITUENTS ON GENE EXPRESSION IN INTESTINAL EPITHELIUMP30DK040561 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI Elizabeth Austen Lawson, Takara Leah Stanley · 1994 to 2026
$31.6M
NIDDK NIH HHS K01 DK06142-02NIDDK NIH HHS P30 DK040561
6 · The paper itself

Abstract

backgroundThe efficacy of vitamin A supplementation on diarrheal disease morbidity may reflect the divergent effects that supplementation has on pathogen-specific immune responses and pathogen-specific outcomes.

objectiveWe examined how vitamin A supplementation modified associations between gut-cytokine immune responses and the resolution of different diarrheal pathogen infections.

designStools collected from 127 Mexican children who were 5-15 mo old and enrolled in a randomized, placebo-controlled vitamin A supplementation trial were screened for enteropathogenic Escherichia coli (EPEC), enterotoxigenic E. coli (ETEC), and Giardia lamblia. Fecal concentrations of interleukin (IL)-6, IL-8, IL-4, IL-5, IL-10, monocyte chemoattractant protein 1 (MCP-1), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) were measured by using an enzyme-linked immunosorbent assay. Hazard models that incorporated categorized cytokine variables (ie, nondetectable, less than the median of detectable concentrations, and at least the median of detectable concentrations) were fit to the length of pathogen infections stratified by treatment group.

resultsVitamin A-supplemented children with fecal MCP-1 or IL-8 concentrations less than the median of detectable concentrations and IL-10 concentrations of at least median concentrations had longer durations of EPEC infection than did children in the placebo group. In supplemented children, detectable fecal TNF-α or IL-6 concentrations were associated with shorter ETEC infection durations, whereas MCP-1 concentrations of at least the median were associated with longer infection durations. Children in this group who had IL-4, IL-5, or IFN-γ concentrations of at least median detectable concentrations had shorter durations of G. lamblia infection.

conclusionThe effect of supplementation on associations between fecal cytokine concentrations and pathogen infection resolution depends on the role of inflammatory immune responses in resolving specific pathogen infections.

Indexed as

Dietary SupplementsAdaptive ImmunityCytokinesDiarrhea, InfantileEnterobacteriaceaeEnterobacteriaceae InfectionsEnteropathogenic Escherichia coliEnterotoxigenic Escherichia coliFecesFemaleGiardia lambliaHumansImmunityImmunity, InnateImmunity, MucosalInfantCytokinesVitamin A

Identifiers

PMID21248183
PMCPMC3041599
OpenAlexW2131536614

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.