Evidence map›Paper›PMID 23505321›Full record

ArticleJournal of lipid research2013

Differential regulation of the expressions of the PGC-1α splice variants, lipins, and PPARα in heart compared to liver.

Bernard P C Kok, Jason R B Dyck, Thurl E Harris, David N Brindley

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.7field-weighted citation impact, top 28% 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

8 citing papers in PubMed, 13 citations in OpenAlex.

  1. Role of lipins in cardiovascular diseases.Lipids in health and disease · 2023
    Review
  2. Review
  3. Article
  4. How lipid droplets "TAG" along: Glycerolipid synthetic enzymes and lipid storage.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2017
    Review
  5. Article
  6. Review
  7. Article
  8. 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

4 authors at 2 institutions in 2 countries.

Bernard P C KokSignal Transduction Research Group, University of Alberta, Edmonton, Alberta, Canada.
Jason R B DyckDepartment of Biochemistry, and Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada; Department of Pediatrics, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada.
Thurl E HarrisDepartment of Pharmacology, University of Virginia School of Medicine, Charlottesville, Virginia.
David N BrindleySignal Transduction Research Group, University of Alberta, Edmonton, Alberta, Canada; Department of Pediatrics, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada. Electronic address: david.brindley@ualberta.ca.
University of Alberta · CAUniversity of Virginia · US

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Peroxisome proliferator-activated receptor α (PPARα) and PPARγ coactivator 1α (PGC-1α) are crucial transcriptional regulators for genes involved in FA oxidation. Lipin-1 is essential for this increased capacity for β-oxidation in fasted livers, and it is also a phosphatidate phosphatase involved in triacylglycerol and phospholipid synthesis. Little is known about the regulation of these proteins in the heart during fasting, where there is increased FA esterification and oxidation. Lipin-1, lipin-2, lipin-3, carnitine palmitoyltransferase-1b (Cpt1b), and PGC-1α-b mRNA were increased by glucocorticoids and cAMP in neonatal rat cardiomyocytes. However, Cpt1b upregulation was caused by increased PPARα activation rather than expression. By contrast, the effects of PPARα in fasted livers are mediated through increased expression. During fasting, the expressions of PGC-1α-b and PGC-1α-c are increased in mouse hearts, and this is explained by increased cAMP-dependent signaling. By contrast, PGC-1α-a expression is increased in liver. Contrary to our expectations, lipin-1 expression was decreased and lipin-2 remained unchanged in hearts compared with increases in fasted livers. Our results identify novel differences in the regulation of lipins, PPARα, and PGC-1α splice variants during fasting in heart versus liver, even though the ultimate outcome in both tissues is to increase FA turnover and oxidation.

Indexed as

Alternative SplicingAnimalsFastingFatty AcidsGene Expression RegulationLiverMyocardiumMyocytes, CardiacOrganic ChemicalsOrgan SpecificityOxidation-ReductionPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPPAR alphaRatsRats, Sprague-DawleyTranscription FactorsFatty AcidslipineOrganic ChemicalsPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPPAR alphaPpargc1a protein, ratTranscription Factorsfastingglycerolipidhepatic and cardiac gene regulationphosphatidate phosphatase

Identifiers

PMID23505321
PMCPMC3646467
OpenAlexW2139017564

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.