Evidence map›Paper›PMID 17436029›Full record

ArticleLipids2007

Epidermal lipoxygenase products of the hepoxilin pathway selectively activate the nuclear receptor PPARalpha.

Zheyong Yu, Claus Schneider, William E Boeglin, Alan R Brash

Abstract read
PubMed Publisher
In one paragraph

Article in Lipids, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Role of arachidonic acid lipoxygenase metabolites in the regulation of vascular tone.American journal of physiology. Heart and circulatory physiology · 2009
    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

4 authors at 2 institutions in 1 country.

Zheyong YuDivision of Clinical Pharmacology, Department of Pharmacology, Vanderbilt University School of Medicine, 23rd Ave. at Pierce, Nashville, TN 37232-6602, USA.
Claus Schneider
William E Boeglin
Alan R Brash
Vanderbilt University · USHoward Hughes Medical Institute · US

Funding

Linking Lipoxygenases with Essential Fatty Acids and Epidermal Barrier FormationR01AR051968 · NIAMS · VANDERBILT UNIVERSITY · PI BRASH, ALAN R. · 2005 to 2016
$3.0M
NIAMS NIH HHS AR051968
6 · The paper itself

Abstract

Arachidonic acid can be transformed into a specific epoxyalcohol product via the sequential action of two epidermal lipoxygenases, 12R-LOX and eLOX3. Functional impairment of either lipoxygenase gene (ALOX12B or ALOXE3) results in ichthyosis, suggesting a role for the common epoxyalcohol product or its metabolites in the differentiation of normal human skin. Here we tested the ability of products derived from the epidermal LOX pathway to activate the peroxisome proliferator-activated receptors PPARalpha, gamma, and delta, which have been implicated in epidermal differentiation. Using a dual luciferase reporter assay in PC3 cells, the 12R-LOX/eLOX3-derived epoxyalcohol, 8R-hydroxy-11R,12R-epoxyeicosa-5Z,9E,14Z-trienoic acid, activated PPARalpha with similar in potency to the known natural ligand, 8S-hydroxyeicosatetraenoic acid (8S-HETE) (both at 10 microM concentration). In contrast, the PPARgamma and PPARdelta receptor isoforms were not activated by the epoxyalcohol. Activation of PPARalpha was also observed using the trihydroxy hydrolysis products (trioxilins) of the unstable epoxyalcohol. Of the four trioxilins isolated and characterized, the highest activation was observed with the isomer that is also formed by enzymatic hydrolysis of the epoxyalcohol. Formation of a ligand for the nuclear receptor PPARalpha may be one possibility by which 12R-LOX and eLOX3 contribute to epidermal differentiation.

Indexed as

Signal Transduction12-Hydroxy-5,8,10,14-eicosatetraenoic Acid8,11,14-Eicosatrienoic AcidArachidonate LipoxygenasesCell DifferentiationCell LineEpidermal CellsEpidermisGenes, ReporterHumansHydroxyeicosatetraenoic AcidsLipoxygenaseLuciferasesPPAR alphaPPAR deltaPPAR gamma11,12-epoxyeicosatrienoic acid methyl ester12-Hydroxy-5,8,10,14-eicosatetraenoic Acid8,11,14-Eicosatrienoic Acid8-hydroxy-11,12-epoxyeicosa-5,9,14-trienoic acidALOXE3 protein, humanArachidonate LipoxygenasesHydroxyeicosatetraenoic AcidsLipoxygenaseLuciferasesPPAR alphaPPAR deltaPPAR gammaReceptors, Cytoplasmic and Nuclear

Identifiers

PMID17436029
OpenAlexW2031966976

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.