Evidence map›Paper›PMID 25147562›Full record

ArticlePPAR research2014

PPARα: A Master Regulator of Bilirubin Homeostasis.

Cyril Bigo, Jenny Kaeding, Diala El Husseini, Iwona Rudkowska, Mélanie Verreault, Marie Claude Vohl, Olivier Barbier

Open access · goldAbstract read
In one paragraph

Article in PPAR research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.4field-weighted citation impact, top 35% 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

9 citing papers in PubMed, 16 citations in OpenAlex.

  1. Review
  2. Article
  3. Bilirubin metabolism in relation to cancer.Frontiers in oncology · 2025
    Review
  4. Review
  5. Inflammation, Dopaminergic Brain and Bilirubin.International journal of molecular sciences · 2023
    Review
  6. Article
  7. Article
  8. Self-regulation of the inflammatory response by peroxisome proliferator-activated receptors.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2019
    Review
  9. Article
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

7 authors at 1 institution in 1 country.

Cyril BigoLaboratory of Molecular Pharmacology, CHU de Québec Research Centre and Faculty of Pharmacy, Laval University, Québec, QC, Canada G1V 4G2.ORCID 0000-0002-7764-5670
Jenny KaedingLaboratory of Molecular Pharmacology, CHU de Québec Research Centre and Faculty of Pharmacy, Laval University, Québec, QC, Canada G1V 4G2.
Diala El HusseiniLaboratory of Molecular Pharmacology, CHU de Québec Research Centre and Faculty of Pharmacy, Laval University, Québec, QC, Canada G1V 4G2.
Iwona RudkowskaEndocrinology and Nephrology, CHU de Québec Research Center, Québec, QC, Canada G1V 4G2.
Mélanie VerreaultLaboratory of Molecular Pharmacology, CHU de Québec Research Centre and Faculty of Pharmacy, Laval University, Québec, QC, Canada G1V 4G2.
Marie Claude VohlInstitute of Nutraceuticals and Functional Foods (INAF), Laval University, Québec, QC, Canada G1V 0A6.ORCID 0000-0002-7017-5848
Olivier BarbierLaboratory of Molecular Pharmacology, CHU de Québec Research Centre and Faculty of Pharmacy, Laval University, Québec, QC, Canada G1V 4G2.ORCID 0000-0002-3067-1134
Université Laval · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypolipidemic fibrates activate the peroxisome proliferator-activated receptor (PPAR) α to modulate lipid oxidation and metabolism. The present study aimed at evaluating how 3 PPARα agonists, namely, fenofibrate, gemfibrozil, and Wy14,643, affect bilirubin synthesis and metabolism. Human umbilical vein epithelial cells (HUVEC) and coronary artery smooth muscle cells (CASMC) were cultured in the absence or presence of the 3 activators, and mRNA, protein, and/or activity levels of the bilirubin synthesizing heme oxygenase- (HO-) 1 and biliverdin reductase (BVR) enzymes were determined. Human hepatocytes (HH) and HepG2 cells sustained similar treatments, except that the expression of the bilirubin conjugating UDP-glucuronosyltransferase (UGT) 1A1 enzyme and multidrug resistance-associated protein (MRP) 2 transporter was analyzed. In HUVECs, gemfibrozil, fenofibrate, and Wy14,643 upregulated HO-1 mRNA expression without affecting BVR. Wy14,643 and fenofibrate also caused HO-1 protein accumulation, while gemfibrozil and fenofibrate favored the secretion of bilirubin in cell media. Similar positive regulations were also observed with the 3 PPARα ligands in CASMCs where HO-1 mRNA and protein levels were increased. In HH and HepG2 cells, both UGT1A1 and MRP2 transcripts were also accumulating. These observations indicate that PPARα ligands activate bilirubin synthesis in vascular cells and metabolism in liver cells. The clinical implications of these regulatory events are discussed.

Identifiers

PMID25147562
PMCPMC4134828
OpenAlexW2132020521

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.