Evidence map›Paper›PMID 22427237›Full record

ArticleGut2012

NKT-associated hedgehog and osteopontin drive fibrogenesis in non-alcoholic fatty liver disease.

Wing-Kin Syn, Kolade M Agboola, Marzena Swiderska, Gregory A Michelotti, Evaggelia Liaskou, Herbert Pang, Guanhua Xie, George Philips, Isaac S Chan, Gamze F Karaca and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in Gut, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 155 papers.

0numbers the graph read from it
0cells of the map it votes in
155citing papers in PubMed
16.0field-weighted citation impact, top 1% 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

155 citing papers in PubMed, 265 citations in OpenAlex.

  1. Review
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  8. ICOSL: more than a trigger of ICOS function.Cell communication and signaling : CCS · 2025
    Review
  9. MASH: the nexus of metabolism, inflammation, and fibrosis.The Journal of clinical investigation · 2025
    Review
  10. Review
  11. Article
  12. Osteopontin Promotes Cholangiocyte Secretion of Chemokines to Support Macrophage Recruitment and Fibrosis in MASH.Liver international : official journal of the International Association for the Study of the Liver · 2025
    Article
  13. Review
  14. Review
  15. Review
  16. Article
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  18. Review
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95 more citing papers are in PubMed but not listed here.

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

18 authors at 5 institutions in 3 countries.

Wing-Kin SynDivision of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
Kolade M Agboola
Marzena Swiderska
Gregory A Michelotti
Evaggelia Liaskou
Herbert Pang
Guanhua Xie
George Philips
Isaac S Chan
Gamze F Karaca
Thiago de Almeida Pereira
Yuping Chen
Zhiyong Mi
Paul C Kuo
Steve S Choi
Cynthia D Guy
Manal F Abdelmalek
Anna Mae Diehl
Duke University · USLoyola University Chicago · USDurham VA Medical Center · USFoundation for Liver Research · GBUniversity of Birmingham · GB

Funding

CANCER CELL BIOLOGY TRAINING PROGRAMT32CA071341 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI CHANNING J. DER, Yuliya Pylayeva-Gupta · 1996 to 2026
$5.0M
Hedgehog Signaling and Adult Liver RegenerationR01DK077794 · NIDDK · DUKE UNIVERSITY · PI DIEHL, ANNA MAE ELIZABETH · 2008 to 2020
$4.6M
LIVER DISEASE IN OBESITYR01DK053792 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI DIEHL, ANNA MAE ELIZABETH · 1999 to 2013
$3.6M
NCI NIH HHS T32 CA071341NIDDK NIH HHS R01 DK053792NIDDK NIH HHS R01 DK077794
6 · The paper itself

Abstract

objectiveImmune responses are important in dictating non-alcoholic steatohepatitis (NASH) outcome. We previously reported that upregulation of hedgehog (Hh) and osteopontin (OPN) occurs in NASH, that Hh-regulated accumulation of natural killer T (NKT) cells promotes hepatic stellate cell (HSC) activation, and that cirrhotic livers harbour large numbers of NKT cells.

designThe hypothesis that activated NKT cells drive fibrogenesis during NASH was evaluated by assessing if NKT depletion protects against NASH fibrosis; identifying the NKT-associated fibrogenic factors; and correlating plasma levels of the NKT cell-associated factor OPN with fibrosis severity in mice and humans.

resultsWhen fed methionine-choline-deficient (MCD) diets for 8 weeks, wild type (WT) mice exhibited Hh pathway activation, enhanced OPN expression, and NASH-fibrosis. Ja18-/- and CD1d-/- mice which lack NKT cells had significantly attenuated Hh and OPN expression and dramatically less fibrosis. Liver mononuclear cells (LMNCs) from MCD diet fed WT mice contained activated NKT cells, generated Hh and OPN, and stimulated HSCs to become myofibroblasts; neutralising these factors abrogated the fibrogenic actions of WT LMNCs. LMNCs from NKT-cell-deficient mice were deficient in fibrogenic factors, failing to activate collagen gene expression in HSCs. Human NASH livers with advanced fibrosis contained more OPN and Hh protein than those with early fibrosis. Plasma levels of OPN mirrored hepatic OPN expression and correlated with fibrosis severity.

conclusionHepatic NKT cells drive production of OPN and Hh ligands that promote fibrogenesis during NASH. Associated increases in plasma levels of OPN may provide a biomarker of NASH fibrosis.

Indexed as

AnimalsDisease ProgressionEnzyme-Linked Immunosorbent AssayFatty LiverFibrosisHedgehog ProteinsHepatic Stellate CellsHumansImmunohistochemistryLiverLymphocyte ActivationMiceNatural Killer T-CellsNon-alcoholic Fatty Liver DiseaseOsteopontinSignal TransductionHedgehog ProteinsOsteopontin

Identifiers

PMID22427237
PMCPMC3578424
OpenAlexW2106322659

What OpenQuestion holds

Textmetadata
LicenceTDM
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.