Evidence map›Paper›PMID 19201949›Full record

ArticleDevelopment (Cambridge, England)2009

TNFalpha-dependent hepatic steatosis and liver degeneration caused by mutation of zebrafish S-adenosylhomocysteine hydrolase.

Randolph P Matthews, Kristin Lorent, Rafael Mañoral-Mobias, Yuehua Huang, Weilong Gong, Ian V J Murray, Ian A Blair, Michael Pack

Open access · greenAbstract readComparative Study
In one paragraph

Article in Development (Cambridge, England), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

53 citing papers in PubMed, 88 citations in OpenAlex.

  1. Article
  2. Evaluation of the Health Status of Largemouth Bass (Animals : an open access journal from MDPI · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. Functional and Pathological Roles of AHCY.Frontiers in cell and developmental biology · 2021
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Homocysteine regulates fatty acid and lipid metabolism in yeast.The Journal of biological chemistry · 2018
    Article
  19. Article
  20. Review
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

8 authors at 1 institution in 1 country.

Randolph P MatthewsDivision of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia and Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
Kristin Lorent
Rafael Mañoral-Mobias
Yuehua Huang
Weilong Gong
Ian V J Murray
Ian A Blair
Michael Pack
University of Pennsylvania · US

Funding

Translational Research Support CoreP30ES013508 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI Trevor M Penning · 2006 to 2026
$35.3M
Exocrine Pancreas &Intestinal Epithelial DevelopmentR01DK061142 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI PACK, MICHAEL A · 2001 to 2005
$2.0M
Dosimetry of Lipid-Derived Amino Acid Adducts by LC/MSR01CA095586 · NCI · UNIVERSITY OF PENNSYLVANIA · PI BLAIR, IAN ALEXANDER · 2002 to 2006
$1.4M
Genetic Analysis of Zebrafish Biliary MutantsK08DK068009 · NIDDK · CHILDREN'S HOSP OF PHILADELPHIA · PI MATTHEWS, RANDOLPH P · 2004 to 2008
$663k
NCI NIH HHS R01 CA95586NIDDK NIH HHS K08 DK068009NIDDK NIH HHS R01 DK61142NIEHS NIH HHS P30 ES013508PHS HHS R03 AGO27893
6 · The paper itself

Abstract

Hepatic steatosis and liver degeneration are prominent features of the zebrafish ducttrip (dtp) mutant phenotype. Positional cloning identified a causative mutation in the gene encoding S-adenosylhomocysteine hydrolase (Ahcy). Reduced Ahcy activity in dtp mutants led to elevated levels of S-adenosylhomocysteine (SAH) and, to a lesser degree, of its metabolic precursor S-adenosylmethionine (SAM). Elevated SAH in dtp larvae was associated with mitochondrial defects and increased expression of tnfa and pparg, an ortholog of the mammalian lipogenic gene. Antisense knockdown of tnfa rescued hepatic steatosis and liver degeneration in dtp larvae, whereas the overexpression of tnfa and the hepatic phenotype were unchanged in dtp larvae reared under germ-free conditions. These data identify an essential role for tnfa in the mutant phenotype and suggest a direct link between SAH-induced methylation defects and TNF expression in human liver disorders associated with elevated TNFalpha. Although heterozygous dtp larvae had no discernible phenotype, hepatic steatosis was present in heterozygous adult dtp fish and in wild-type adult fish treated with an Ahcy inhibitor. These data argue that AHCY polymorphisms and AHCY inhibitors, which have shown promise in treating autoimmunity and other disorders, may be a risk factor for steatosis, particularly in patients with diabetes, obesity and liver disorders such as hepatitis C infection. Supporting this idea, hepatic injury and steatosis have been noted in patients with recently discovered AHCY mutations.

Indexed as

AdenosylhomocysteinaseAnimalsBase SequenceDisease Models, AnimalDNA PrimersFatty LiverHumansLarvaLipogenesisLiver DiseasesMaleMethionineMitochondria, LiverModels, BiologicalMutationOxidative Stress3-deazaadenosineAdenosylhomocysteinaseDNA PrimersMethionineTubercidinTumor Necrosis Factor-alphaZebrafish Proteins

Identifiers

PMID19201949
PMCPMC2685951
OpenAlexW2026941176

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.