Evidence map›Paper›PMID 25492126›Full record

SynthesisBMC gastroenterology2014

Toll-like receptor 4 Asp299Gly and Thr399Ile polymorphisms: New data and a meta-analysis.

Nezha Senhaji, Brehima Diakité, Nadia Serbati, Younes Zaid, Wafaa Badre, Sellama Nadifi

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in BMC gastroenterology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.0field-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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
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  3. Review
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  5. Article
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  8. Article
  9. Anti-TNF-Mediators of inflammation · 2018
    Article
  10. Article
  11. Ulcerative colitis.Lancet (London, England) · 2017
    Review
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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

6 authors at 1 institution in 1 country.

Nezha SenhajiLaboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco. nezha.senhaji@gmail.com.
Brehima DiakitéLaboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco. br.diakite@yahoo.fr.
Nadia SerbatiLaboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco. nadiaserbati@yahoo.fr.
Younes ZaidLaboratory of Thrombosis and Haemostasis Research Centre, Montreal Heart Institute, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada. younes_zaid@yahoo.ca.
Wafaa BadreGastroenterology Department, CHU Ibn Rochd, Casablanca, Morocco. wafaa6badre6dr@gmail.com.
Sellama NadifiLaboratory of Genetic and Molecular Pathology (LGPM), Medical School, Hassan II University, Casablanca, Morocco. nadifisel@yahoo.fr.
University of Hassan II Casablanca · MA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe pathogenesis of inflammatory bowel disease (IBD) involves interactions between the host genetic susceptibility, intestinal microflora and mucosal immune responses through the pattern recognition receptor. Polymorphisms in toll-like receptor 4 (TLR4) induce an aberrant immune response to indigenous intestinal flora, which might favor IBD development. In this study, we aimed to determine whether TLR4 gene was associated with Crohn's disease (CD) and ulcerative colitis (UC) among Moroccan patients, and evaluated its correlation with clinical manifestation of the disease.

methodsThe study population comprised 117 patients with IBD and 112 healthy unrelated blood donors. TLR4 polymorphisms: Asp299Gly and Thr399Ile were genotyped by polymerase chain reaction-restriction fragment length polymorphism. PCR products were cleaved with Nco I for the Asp299Gly polymorphism and Hinf I for the Thr399Ile polymorphism. Meta-analysis was performed to test the association of 299Gly and 399Ileu carriage with CD, UC and the overall IBD risk.

resultsOur study revealed that the frequency of Asp299Gly and Thr399Ile did not differ significantly between patients and controls in the Moroccan population. However, meta-analysis demonstrated significantly higher frequencies of both Asp299Gly and Thr399Ile SNPs in IBD and CD and for 399Ileu carriage in UC patients.

conclusionThe meta-analysis provides evidence that TLR4 polymorphisms confer a significant increased risk for the overall IBD development.

Indexed as

Polymorphism, GeneticAdultColitis, UlcerativeCrohn DiseaseHumansInflammatory Bowel DiseasesMoroccoPolymorphism, Restriction Fragment LengthToll-Like Receptor 4TLR4 protein, humanToll-Like Receptor 4

Identifiers

PMID25492126
PMCPMC4279599
OpenAlexW2132009816

What OpenQuestion holds

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LicenceCC BY
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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.