Evidence map›Paper›PMID 19342509›Full record

ArticleAmerican journal of physiology. Gastrointestinal and liver physiology2009

Interleukin-1 participates in the progression from liver injury to fibrosis.

Roben G Gieling, Karen Wallace, Yuan-Ping Han

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Gastrointestinal and liver physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 2 pooled it
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

144 citing papers in PubMed, 2 syntheses or guidelines pooled it, 275 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  12. IL-1b-Bearing NETs: Bridging Inflammation to Early Cirrhosis in Hepatitis B.International journal of molecular sciences · 2025
    Article
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  15. Review
  16. Review
  17. Article
  18. Article
  19. NLRP3 inflammasome inhibition decreasesInfection and immunity · 2024
    Article
  20. Article

84 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

3 authors at 1 institution in 1 country.

Roben G GielingDepartment of Surgery, the Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
Karen Wallace
Yuan-Ping Han
University of Southern California · US

Funding

Hepatic Stellate Cell Derived MMP9 in Liver FibrogenesisR01DK069418 · NIDDK · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HAN, YUAN-PING · 2004 to 2008
$1.5M
ACT,a pathophysiological inhibitor of MMP-9 activationR01AR051558 · NIAMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HAN, YUAN-PING · 2004 to 2008
$1.1M
NIAMS NIH HHS R01 AR051558NIDDK NIH HHS R01 DK069418
6 · The paper itself

Abstract

Interleukin-1 (IL-1) is rapidly expressed in response to tissue damage; however, its role in coordinating the progression from injury to fibrogenesis is not fully understood. Liver fibrosis is a consequence of the activation of hepatic stellate cells (HSCs), which reside within the extracellular matrix (ECM) of subsinusoids. We have hypothesized that, among the hepatic inflammatory cytokines, IL-1 may directly activate HSCs through autocrine signaling and stimulate the matrix metalloproteinases (MMPs) produced by HSCs within the space of Disse, resulting in liver fibrogenesis. In this study, we first established a temporal relationship between IL-1, MMPs, HSC activation, and early fibrosis. The roles of IL-1 and MMP-9 in HSC activation and fibrogenesis were determined by mice deficient of these genes. After liver injury, IL-1, MMP-9, and MMP-13 levels were found to be elevated before the onset of HSC activation and fibrogenesis. IL-1 receptor-deficient mice exhibited ameliorated liver damage and reduced fibrogenesis. Similarly, advanced fibrosis, as determined by type-I and -III collagen mRNA expression and fibrotic septa, was partially attenuated by the deficiency of IL-1. In the early phase of liver injury, the MMP-9, MMP-13, and TIMP-1 expression correlated well with IL-1 levels. In injured livers, MMP-9 was predominantly colocalized to desmin-positive cells, suggesting that HSCs are MMP-producing cells in vivo. MMP-9-deficient mice were partially protected from liver injury and HSC activation. Thus IL-1 is an important participant, along with other cytokines, and controls the progression from liver injury to fibrogenesis through activation of HSCs in vivo.

Indexed as

ActinsAlanine TransaminaseAnimalsCollagen Type ICollagen Type IIIGene ExpressionHepatic Stellate CellsInterleukin-1Interleukin-1alphaInterleukin-1betaLiverLiver CirrhosisMaleMatrix Metalloproteinase 13Matrix Metalloproteinase 2Matrix Metalloproteinase 9Acta2 protein, mouseActinsAlanine TransaminaseCollagen Type ICollagen Type IIIInterleukin-1Interleukin-1alphaInterleukin-1betaMatrix Metalloproteinase 13Matrix Metalloproteinase 2Matrix Metalloproteinase 9Receptors, Interleukin-1ThioacetamideTissue Inhibitor of Metalloproteinase-1Tissue Inhibitor of Metalloproteinase-2Transforming Growth Factor beta

Identifiers

PMID19342509
PMCPMC2697947
OpenAlexW2000463136

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.