Evidence map›Paper›PMID 20604937›Full record

Trial reportBMC gastroenterology2010

Gastric and intestinal barrier impairment in tropical enteropathy and HIV: limited impact of micronutrient supplementation during a randomised controlled trial.

Paul Kelly, Tamara Shawa, Stayner Mwanamakondo, Rose Soko, Geoff Smith, G Robin Barclay, Ian R Sanderson

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in BMC gastroenterology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
2.4field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Micronutrient supplementation in adults with HIV infection.The Cochrane database of systematic reviews · 2017
    Pooled it
  3. Oral zinc for treating diarrhoea in children.The Cochrane database of systematic reviews · 2016
    Pooled it
  4. Trial
  5. Trial
  6. Trial
  7. Observational
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Observational
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

7 authors at 5 institutions in 2 countries.

Paul KellyBlizard Institute of Cell and Molecular Science, Barts & The London School of Medicine, Queen Mary University of London, London, UK. m.p.kelly@qmul.ac.uk
Tamara Shawa
Stayner Mwanamakondo
Rose Soko
Geoff Smith
G Robin Barclay
Ian R Sanderson
Tropical Gastroenterology & Nutrition group · ZMCharing Cross Hospital · GBLondon School of Hygiene & Tropical Medicine · GBMRC Centre for Regenerative Medicine · GBQueen Mary University of London · GB

Funding

Wellcome Trust 067948
6 · The paper itself

Abstract

backgroundAlthough micronutrient supplementation can reduce morbidity and mortality due to diarrhoea, nutritional influences on intestinal host defence are poorly understood. We tested the hypothesis that micronutrient supplementation can enhance barrier function of the gut.

methodsWe carried out two sub-studies nested within a randomised, double-blind placebo-controlled trial of daily micronutrient supplementation in an urban community in Lusaka, Zambia. In the first sub-study, gastric pH was measured in 203 participants. In the second sub-study, mucosal permeability, lipopolysaccharide (LPS) and anti-LPS antibodies, and serum soluble tumour necrosis factor receptor p55 (sTNFR55) concentrations were measured in 87 participants. Up to three stool samples were also analysed microbiologically for detection of asymptomatic intestinal infection. Gastric histology was subsequently analysed in a third subset (n = 37) to assist in interpretation of the pH data. Informed consent was obtained from all participants after a three-stage information and consent process.

resultsHypochlorhydria (fasting gastric pH > 4.0) was present in 75 (37%) of participants. In multivariate analysis, HIV infection (OR 4.1; 95%CI 2.2-7.8; P < 0.001) was associated with hypochlorhydria, but taking anti-retroviral treatment (OR 0.16; 0.04-0.67; P = 0.01) and allocation to micronutrient supplementation (OR 0.53; 0.28-0.99; P < 0.05) were protective. Hypochlorhydria was associated with increased risk of salmonellosis. Mild (grade 1) gastric atrophy was found in 5 participants, irrespective of Helicobacter pylori or HIV status. Intestinal permeability, LPS concentrations in serum, anti-LPS IgG, and sTNFR55 concentrations did not differ significantly between micronutrient and placebo groups. Anti-LPS IgM was reduced in the micronutrient recipients (P <0.05).

conclusionsWe found evidence of a specific effect of HIV on gastric pH which was readily reversed by anti-retroviral therapy and not mediated by gastric atrophy. Micronutrients had a modest impact on gastric pH and one marker of bacterial translocation.

trial registrationCurrent Controlled Trials ISRCTN31173864.

Indexed as

Dietary SupplementsAdultAgedAntibodiesAnti-Retroviral AgentsDouble-Blind MethodFemaleFollow-Up StudiesHIV EnteropathyHumansHydrogen-Ion ConcentrationIntestinesLipopolysaccharidesMaleMicronutrientsMiddle AgedAntibodiesAnti-Retroviral AgentsLipopolysaccharidesMicronutrientsReceptors, Tumor Necrosis Factor, Type Irecombinant human tumor necrosis factor-binding protein-1Tumor Necrosis Factor Decoy Receptors

Identifiers

PMID20604937
PMCPMC2910659
OpenAlexW2088410683

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.