Evidence map›Paper›PMID 12704794›Full record

ArticleJournal of cellular biochemistry2003

Leptin induces increased alpha2(I) collagen gene expression in cultured rat hepatic stellate cells.

Neeraj K Saxena, George Saliba, Jeffrey J Floyd, Frank A Anania

Open access · greenAbstract read
In one paragraph

Article in Journal of cellular biochemistry, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 92 citations in OpenAlex.

  1. Article
  2. Superoxide-induced Type I collagen secretion depends on prolyl 4-hydroxylases.Biochemical and biophysical research communications · 2020
    Article
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  13. Leptin and adiponectin: emerging therapeutic targets in breast cancer.Journal of mammary gland biology and neoplasia · 2013
    Review
  14. Glutathione synthesis.Biochimica et biophysica acta · 2013
    Review
  15. Translating an understanding of the pathogenesis of hepatic fibrosis to novel therapies.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2013
    Review
  16. Article
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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

4 authors at 1 institution in 1 country.

Neeraj K SaxenaHepatology Section, Division of Gastroenterology, Department of Medicine, University of Maryland School of Medicine, Room N3W50, 22 South Greene Street, Baltimore, Maryland 21201, USA.
George Saliba
Jeffrey J Floyd
Frank A Anania
University of Maryland, Baltimore · US

Funding

The Role of Leptin in Liver FibrogenesisR01DK062092 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI ANANIA, FRANK A · 2003 to 2016
$3.9M
NIDDK NIH HHS R01 DK062092PHS HHS 12933Wellcome Trust 062092
6 · The paper itself

Abstract

Leptin is a 16-kDa hormone with an array of biologic actions. We, and others, have demonstrated that leptin is critical to the development of liver fibrogenesis both in vitro and in the lean littermates of ob/ob mice exposed to carbon tetrachloride (CCl(4)). Controversy exists as to whether leptin can act as a direct cytokine in the development of increased collagen expression, and whether ob/ob mice are resistant to potential injury from CCl(4). Here, we provide evidence that strongly suggests that leptin acts to increase nascent production of mRNA for the alpha2(I) collagen gene based upon ribonuclease protection analysis (RPA). Actinomycin D, but not cyclohexamide, or the pan-neutralizing antibody to transforming growth factor beta one (TGFbeta1), significantly diminished the effect of leptin on total alpha2(I) collagen mRNA levels. Further evidence that leptin acts directly on HSCs to alter gene expression in liver wounding is demonstrated by enhanced binding of phosphorylated signal transduction and activator of transcription factor 3 (pStat3) to a cis-inducible element (SIE) oligonucleotide by electrophoretic mobility shift assay (EMSA). This consensus sequence is responsible for production of a critical collagen transcription factor, AP-1. Finally, we have demonstrated from the ob/ob mouse model that these animals are at least as sensitive to CCl(4) as their respective lean animals as assessed by serum alanine aminotransferase (ALT) measurements. Taken together, the current data provide a continued framework that leptin is a profibrogenic cytokine and plays a key role in liver fibrosis.

Indexed as

Alanine TransaminaseAnimalsCarbon TetrachlorideCells, CulturedCollagenCollagen Type ICycloheximideDactinomycinElectrophoretic Mobility Shift AssayEnzyme-Linked Immunosorbent AssayGene Expression RegulationLeptinLiverMaleMicePromoter Regions, GeneticAlanine TransaminaseCarbon TetrachlorideCollagenCollagen Type ICycloheximideDactinomycinLeptinProtein Synthesis InhibitorsRNA, MessengerTransforming Growth Factor beta

Identifiers

PMID12704794
PMCPMC2925439
OpenAlexW2092351803

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.