Evidence map›Paper›PMID 20691165›Full record

ArticleBiochemical pharmacology2010

Eicosapentaenoic acid improves hepatic steatosis independent of PPARα activation through inhibition of SREBP-1 maturation in mice.

Naoki Tanaka, Xiuguo Zhang, Eiko Sugiyama, Hiroyuki Kono, Akira Horiuchi, Takero Nakajima, Hiroki Kanbe, Eiji Tanaka, Frank J Gonzalez, Toshifumi Aoyama

Open access · greenAbstract read
In one paragraph

Article in Biochemical pharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
6.1field-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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 77 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Review
  9. DietaryNutrients · 2025
    Article
  10. Anti-Inflammatory Activity of the Constituents from the Leaves ofPharmaceuticals (Basel, Switzerland) · 2023
    Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Dietary and Pharmacological Fatty Acids and Cardiovascular Health.The Journal of clinical endocrinology and metabolism · 2020
    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

10 authors at 5 institutions in 2 countries.

Naoki TanakaDepartment of Metabolic Regulation, Shinshu University Graduate School of Medicine, Japan. tanakan@mail.nih.gov
Xiuguo Zhang
Eiko Sugiyama
Hiroyuki Kono
Akira Horiuchi
Takero Nakajima
Hiroki Kanbe
Eiji Tanaka
Frank J Gonzalez
Toshifumi Aoyama
Shinshu University · JPMochida Pharmaceutical (Japan) · JPNagano Prefectural College · JPNational Cancer Institute · USShowa Inan General Hospital · JP

Funding

Xenobiotic ReceptorsZIABC005708 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI GONZALEZ, FRANK J · 2009 to 2025
$16.4M
TRANSCRIPTIONAL REGULATION OF GENES ENCODING XENOBIOTIC METABOLIZING ENZYMESZ01BC005561 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI GONZALEZ, FRANK · 1996 to 2008
$754k
Liver-Enriched Transcription FactorsZIABC005561 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI GONZALEZ, FRANK J · 2009 to 2010
$500k
Intramural NIH HHS Z01 BC005561
6 · The paper itself

Abstract

Eicosapentaenoic acid (EPA) in fish oil is known to improve hepatic steatosis. However, it remains unclear whether such action of EPA is actually caused by peroxisome proliferator-activated receptor α (PPARα) activation. To explore the contribution of PPARα to the effects of EPA itself, male wild-type and Ppara-null mice were fed a saturated fat diet for 16 weeks, and highly (>98%)-purified EPA was administered in the last 12 weeks. Furthermore, the changes caused by EPA treatment were compared to those elicited by fenofibrate (FF), a typical PPARα activator. A saturated fat diet caused macrovesicular steatosis in both genotypes. However, EPA ameliorated steatosis only in wild-type mice without PPARα activation, which was evidently different from numerous previous observations. Instead, EPA inhibited maturation of sterol-responsive element-binding protein (SREBP)-1 in the presence of PPARα through down-regulation of SREBP cleavage-activating protein and site-1 protease. Additionally, EPA suppressed fatty acid uptake and promoted hydrolysis of intrahepatic triglycerides in a PPARα-independent manner. These effects were distinct from those of fenofibrate. Although fenofibrate induced NAPDH oxidase and acyl-coenzyme A oxidase and significantly increased hepatic lipid peroxides, EPA caused PPARα-dependent induction of superoxide dismutases, probably contributing to a decrease in the lipid peroxides. These results firstly demonstrate detailed mechanisms of steatosis-ameliorating effects of EPA without PPARα activation and ensuing augmentation of hepatic oxidative stress.

Indexed as

AnimalsDietary FatsDisease Models, AnimalEicosapentaenoic AcidFatty LiverFenofibrateGenotypeImmunoblottingLipid PeroxidationLiverLiver Function TestsMaleMiceMice, KnockoutOxidative StressPPAR alphaDietary FatsEicosapentaenoic AcidFenofibratePPAR alphaSrebf1 protein, mouseSterol Regulatory Element Binding Protein 1

Identifiers

PMID20691165
PMCPMC6338080
OpenAlexW2050883328

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.