Evidence map›Paper›PMID 23152807›Full record

ArticlePloS one2012

Counteracting roles of AMP deaminase and AMP kinase in the development of fatty liver.

Miguel A Lanaspa, Christina Cicerchi, Gabriela Garcia, Nanxing Li, Carlos A Roncal-Jimenez, Christopher J Rivard, Brandi Hunter, Ana Andrés-Hernando, Takuji Ishimoto, Laura G Sánchez-Lozada and 4 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 108 papers.

0numbers the graph read from it
0cells of the map it votes in
108citing papers in PubMed
5.5field-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

108 citing papers in PubMed, 191 citations in OpenAlex.

  1. Review
  2. New Insight Into Male Infertility: Deviation From Basic Tenets of Life.Oxidative medicine and cellular longevity · 2026
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  4. Acta pharmaceutica Sinica. B · 2025
    Article
  5. Article
  6. Observational
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Review
  14. Role of AMP deaminase in diabetic cardiomyopathy.Molecular and cellular biochemistry · 2024
    Review
  15. Article
  16. Review
  17. Article
  18. Quinoa (Food science & nutrition · 2023
    Article
  19. The fructose survival hypothesis for obesity.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Review
  20. Review

48 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

14 authors at 1 institution in 1 country.

Miguel A LanaspaDivision of Renal Diseases and Hypertension, University of Colorado-Denver, Aurora, Colorado, United States of America. miguel.lanaspagarcia@ucdenver.edu
Christina Cicerchi
Gabriela Garcia
Nanxing Li
Carlos A Roncal-Jimenez
Christopher J Rivard
Brandi Hunter
Ana Andrés-Hernando
Takuji Ishimoto
Laura G Sánchez-Lozada
Jeffrey Thomas
Robert S Hodges
Colin T Mant
Richard J Johnson
University of Colorado Denver · US

Funding

Role of Uric Acid in Hypertension and Renal DiseaseR01HL068607 · NHLBI · UNIVERSITY OF FLORIDA · PI JOHNSON, RICHARD JOSEPH · 2002 to 2011
$3.5M
Development of inhibitors of AMP Deaminase Isoform 2 as a Mechanism for TreatingRC4DK090859 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI JOHNSON, RICHARD JOSEPH · 2010 to 2010
$2.3M
NHLBI NIH HHS HL68607NHLBI NIH HHS R01 HL068607NIDDK NIH HHS RC4 DK090859NIDDK NIH HHS RC4 DK90859
6 · The paper itself

Abstract

Fatty liver (hepatic steatosis) is associated with nucleotide turnover, loss of ATP and generation of adenosine monophosphate (AMP). It is well known that in fatty liver, activity of the AMP-activated kinase (AMPK) is reduced and that its stimulation can prevent hepatic steatosis by both enhancing fat oxidation and reducing lipogenesis. Here we show that another AMP dependent enzyme, AMPD2, has opposing effects on fatty acid oxidation when compared to AMPK. In human hepatocytres, AMPD2 activation -either by overexpression or by lowering intracellular phosphate levels with fructose- is associated with a significant reduction in AMPK activity. Likewise, silencing of AMPK spontaneously increases AMPD activity, demonstrating that these enzymes counter-regulate each other. Furthermore, we show that a downstream product of AMP metabolism through AMPD2, uric acid, can inhibit AMPK activity in human hepatocytes. Finally, we show that fructose-induced fat accumulation in hepatocytes is due to a dominant stimulation of AMPD2 despite stimulating AMPK. In this regard, AMPD2-deficient hepatocytes demonstrate a further activation of AMPK after fructose exposure in association with increased fatty acid oxidation, and conversely silencing AMPK enhances AMPD-dependent fat accumulation. In vivo, we show that sucrose fed rats also develop fatty liver that is blocked by metformin in association with both a reduction in AMPD activity and an increase in AMPK activity. In summary, AMPD and AMPK are both important in hepatic fat accumulation and counter-regulate each other. We present the novel finding that uric acid inhibits AMPK kinase activity in fructose-fed hepatocytes thus providing new insights into the pathogenesis of fatty liver.

Indexed as

Adenylate KinaseAMP DeaminaseAnimalsCarbon-Carbon Double Bond IsomerasesEnzyme ActivationFatsFatty LiverFructoseGene Expression RegulationHepatocytesHep G2 CellsHumansIsoenzymesMaleMetforminOxidation-ReductionAdenylate KinaseAMP DeaminaseCarbon-Carbon Double Bond Isomerasesdelta(3,5),delta(2,4)-dienoyl-CoA isomeraseFatsFructoseIsoenzymesMetforminUric Acid

Identifiers

PMID23152807
PMCPMC3494720
OpenAlexW2004585208

What OpenQuestion holds

Textmetadata
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.