Evidence map›Paper›PMID 20811628›Full record

ArticlePloS one2010

Mutational characterization of the bile acid receptor TGR5 in primary sclerosing cholangitis.

Johannes R Hov, Verena Keitel, Jon K Laerdahl, Lina Spomer, Eva Ellinghaus, Abdou ElSharawy, Espen Melum, Kirsten M Boberg, Thomas Manke, Tobias Balschun and 27 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

46 citing papers in PubMed, 125 citations in OpenAlex.

  1. Review
  2. Review
  3. Bile acid metabolism in type 2 diabetes mellitus.Nature reviews. Endocrinology · 2025
    Review
  4. Bile acids and their receptors in hepatic immunity.Liver research (Beijing, China) · 2025
    Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
  11. Primary Sclerosing Cholangitis and Inflammatory Bowel Disease: A Review.Journal of clinical and translational hepatology · 2022
    Review
  12. Review
  13. Review
  14. Bile Acid Signaling in Inflammatory Bowel Disease.International journal of molecular sciences · 2021
    Review
  15. Bile Acid Signaling in Inflammatory Bowel Diseases.Digestive diseases and sciences · 2021
    Review
  16. Article
  17. Review
  18. Mechanisms of cholangiocyte responses to injury.Biochimica et biophysica acta. Molecular basis of disease · 2018
    Review
  19. Review
  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

37 authors at 14 institutions in 6 countries.

Johannes R HovNorwegian PSC Research Center, Clinic for Specialized Medicine and Surgery, Oslo University Hospital Rikshospitalet, Oslo, Norway. j.e.r.hov@medisin.uio.no
Verena Keitel
Jon K Laerdahl
Lina Spomer
Eva Ellinghaus
Abdou ElSharawy
Espen Melum
Kirsten M Boberg
Thomas Manke
Tobias Balschun
Christoph Schramm
Annika Bergquist
Tobias Weismüller
Daniel Gotthardt
Christian Rust
Liesbet Henckaerts
Clive M Onnie
Rinse K Weersma
Martina Sterneck
Andreas Teufel
Heiko Runz
Adolf Stiehl
Cyriel Y Ponsioen
Cisca Wijmenga
Morten H Vatn
IBSEN Study Group
Pieter C F Stokkers
Severine Vermeire
Christopher G Mathew
Benedicte A Lie
Ulrich Beuers
Michael P Manns
Stefan Schreiber
Erik Schrumpf
Dieter Häussinger
Andre Franke
Tom H Karlsen
Oslo University Hospital · NOChristian-Albrechts-Universität zu Kiel · DEAmsterdam UMC Location University of Amsterdam · NLHeidelberg University · DEHeinrich Heine University Düsseldorf · DEKing's College London · GBUniversitair Ziekenhuis Leuven · BEUniversität Hamburg · DEUniversity Medical Center Groningen · NLJohannes Gutenberg University Mainz · DEKarolinska University Hospital · SELudwig-Maximilians-Universität München · DEMax Planck Institute for Molecular Genetics · DEMedizinische Hochschule Hannover · DE

Funding

Medical Research Council G0000934Wellcome TrustWellcome Trust 068545/Z/02
6 · The paper itself

Abstract

backgroundTGR5, the G protein-coupled bile acid receptor 1 (GPBAR1), has been linked to inflammatory pathways as well as bile homeostasis, and could therefore be involved in primary sclerosing cholangitis (PSC) a chronic inflammatory bile duct disease. We aimed to extensively investigate TGR5 sequence variation in PSC, as well as functionally characterize detected variants. METHODOLOGY/PRINCIPAL

findingsComplete resequencing of TGR5 was performed in 267 PSC patients and 274 healthy controls. Six nonsynonymous mutations were identified in addition to 16 other novel single-nucleotide polymorphisms. To investigate the impact from the nonsynonymous variants on TGR5, we created a receptor model, and introduced mutated TGR5 constructs into human epithelial cell lines. By using confocal microscopy, flow cytometry and a cAMP-sensitive luciferase assay, five of the nonsynonymous mutations (W83R, V178M, A217P, S272G and Q296X) were found to reduce or abolish TGR5 function. Fine-mapping of the previously reported PSC and UC associated locus at chromosome 2q35 in large patient panels revealed an overall association between the TGR5 single-nucleotide polymorphism rs11554825 and PSC (odds ratio = 1.14, 95% confidence interval: 1.03-1.26, p = 0.010) and UC (odds ratio = 1.19, 95% confidence interval 1.11-1.27, p = 8.5 x 10(-7)), but strong linkage disequilibrium precluded demarcation of TGR5 from neighboring genes. CONCLUSIONS/SIGNIFICANCE: Resequencing of TGR5 along with functional investigations of novel variants provided unique insight into an important candidate gene for several inflammatory and metabolic conditions. While significant TGR5 associations were detected in both UC and PSC, further studies are needed to conclusively define the role of TGR5 variation in these diseases.

Indexed as

DNA Mutational AnalysisMutationAdolescentAdultAgedAmino Acid SequenceAnimalsCattleChildCholangitis, SclerosingChromosomes, Human, Pair 2Colitis, UlcerativeDogsFemaleGene Expression RegulationHumansGPBAR1 protein, humanReceptors, G-Protein-Coupled

Identifiers

PMID20811628
PMCPMC2928275
OpenAlexW2130186030

What OpenQuestion holds

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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.