Evidence map›Paper›PMID 20375275›Full record

ArticleAmerican journal of physiology. Cell physiology2010

Effect of chronic contractile activity on mRNA stability in skeletal muscle.

Ruanne Y J Lai, Vladimir Ljubicic, Donna D'souza, David A Hood

Abstract read
In one paragraph

Article in American journal of physiology. Cell physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Review of the current and potential use of biological and molecular methods for the estimation of the postmortem interval in animals and humans.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2023
    Review
  4. Article
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  6. Article
  7. Article
  8. Review
  9. Article
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  11. Article
  12. Review
  13. Article
  14. Article
  15. Aging Hallmarks: The Benefits of Physical Exercise.Frontiers in endocrinology · 2018
    Review
  16. Review
  17. Review
  18. Review
  19. Article
  20. 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.

Ruanne Y J LaiSchool of Kinesiology and Health Science, York University, Toronto, ON, Canada.
Vladimir Ljubicic
Donna D'souza
David A Hood

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Repeated bouts of exercise promote the biogenesis of mitochondria by multiple steps in the gene expression patterning. The role of mRNA stability in controlling the expression of mitochondrial proteins is relatively unexplored. To induce mitochondrial biogenesis, we chronically stimulated (10 Hz; 3 or 6 h/day) rat muscle for 7 days. Chronic contractile activity (CCA) increased the protein expression of PGC-1alpha, c-myc, and mitochondrial transcription factor A (Tfam) by 1.6-, 1.7- and 2.0-fold, respectively. To determine mRNA stability, we incubated total RNA with cytosolic extracts using an in vitro cell-free system. We found that the intrinsic mRNA half-lives (t(1/2)) were variable within control muscle. Peroxisome proliferator-activated receptor-gamma, coactivator-1alpha (PGC-1alpha) and Tfam mRNAs decayed more rapidly (t(1/2) = 22.7 and 31.4 min) than c-myc mRNA (t(1/2) = 99.7 min). Furthermore, CCA resulted in a differential response in degradation kinetics. After CCA, PGC-1alpha and Tfam mRNA half-lives decreased by 48% and 44%, respectively, whereas c-myc mRNA half-life was unchanged. CCA induced an elevation of both the cytosolic RNA-stabilizing human antigen R (HuR) and destabilizing AUF1 (total) by 2.4- and 1.8-fold, respectively. Increases in the p37(AUF1), p40(AUF1), and p45(AUF1) isoforms were most evident. Thus these data indicate that CCA results in accelerated turnover rates of mRNAs encoding important mitochondrial biogenesis regulators in skeletal muscle. This adaptation is likely beneficial in permitting more rapid phenotypic plasticity in response to subsequent contractile activity.

Indexed as

Muscle ContractionRNA Stability3' Untranslated RegionsAdaptation, PhysiologicalAnimalsAntigens, SurfaceBase SequenceELAV-Like Protein 1ELAV ProteinsElectric StimulationHalf-LifeHeterogeneous-Nuclear Ribonucleoprotein DHeterogeneous Nuclear Ribonucleoprotein D0KineticsMaleMitochondria, Muscle3' Untranslated RegionsAntigens, SurfaceELAVL1 protein, humanELAV-Like Protein 1ELAV ProteinsHeterogeneous-Nuclear Ribonucleoprotein DHeterogeneous Nuclear Ribonucleoprotein D0HNRNPD protein, humanHnrnpd protein, ratPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPpargc1a protein, ratProto-Oncogene Proteins c-mycRNA-Binding ProteinsRNA, MessengerTfam protein, ratTranscription Factors

Identifiers

PMID20375275
PMCPMC2904257

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.