Evidence map›Paper›PMID 20502695›Full record

Trial reportPloS one2010

Eccentric exercise activates novel transcriptional regulation of hypertrophic signaling pathways not affected by hormone changes.

Lauren G MacNeil, Simon Melov, Alan E Hubbard, Steven K Baker, Mark A Tarnopolsky

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Exercise-induced cardiac hypertrophy: cellular and molecular mechanisms of cardiac adaptation following physical activity.Postepy w kardiologii interwencyjnej = Advances in interventional cardiology · 2026
    Review
  6. Article
  7. Exercise microdosing for skeletal muscle health applications to spaceflight.Journal of applied physiology (Bethesda, Md. : 1985) · 2024
    Article
  8. Adaptability to eccentric exercise training is diminished with age in female mice.Journal of applied physiology (Bethesda, Md. : 1985) · 2023
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Pathophysiological Functions of Rnd3/RhoE.Comprehensive Physiology · 2015
    Review
  18. Article
  19. Article
  20. 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

5 authors at 3 institutions in 2 countries.

Lauren G MacNeilDepartment of Kinesiology, McMaster University, Hamilton, Ontario, Canada.
Simon Melov
Alan E Hubbard
Steven K Baker
Mark A Tarnopolsky
McMaster University · CABuck Institute for Research on Aging · USUniversity of California, Berkeley · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Unaccustomed eccentric exercise damages skeletal muscle tissue, activating mechanisms of recovery and remodeling that may be influenced by the female sex hormone 17beta-estradiol (E2). Using high density oligonucleotide based microarrays, we screened for differences in mRNA expression caused by E2 and eccentric exercise. After random assignment to 8 days of either placebo (CON) or E2 (EXP), eighteen men performed 150 single-leg eccentric contractions. Muscle biopsies were collected at baseline (BL), following supplementation (PS), +3 hours (3H) and +48 hours (48H) after exercise. Serum E2 concentrations increased significantly with supplementation (P<0.001) but did not affect microarray results. Exercise led to early transcriptional changes in striated muscle activator of Rho signaling (STARS), Rho family GTPase 3 (RND3), mitogen activated protein kinase (MAPK) regulation and the downstream transcription factor FOS. Targeted RT-PCR analysis identified concurrent induction of negative regulators of calcineurin signaling RCAN (P<0.001) and HMOX1 (P = 0.009). Protein contents were elevated for RND3 at 3H (P = 0.02) and FOS at 48H (P<0.05). These findings indicate that early RhoA and NFAT signaling and regulation are altered following exercise for muscle remodeling and repair, but are not affected by E2.

Indexed as

Gene Expression RegulationTranscription, GeneticActinsBlotting, WesternDietary SupplementsEstradiolExerciseHumansHypertrophyL-Lactate DehydrogenaseMaleMusclesNFATC Transcription FactorsOligonucleotide Array Sequence AnalysisPhosphorylationReverse Transcriptase Polymerase Chain ReactionActinsEstradiolL-Lactate DehydrogenaseNFATC Transcription FactorsrhoA GTP-Binding ProteinRNA, MessengerTestosterone

Identifiers

PMID20502695
PMCPMC2872670
OpenAlexW2145422153

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.