Evidence map›Paper›PMID 25268835›Full record

ArticleNutrients2014

Leucine supplementation accelerates connective tissue repair of injured tibialis anterior muscle.

Marcelo G Pereira, Meiricris T Silva, Eduardo O C Carlassara, Dawit A Gonçalves, Paulo A Abrahamsohn, Isis C Kettelhut, Anselmo S Moriscot, Marcelo S Aoki, Elen H Miyabara

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.0field-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

19 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Beta-hydroxy-beta-methylbutyrate associated with low-intensity exercise training improves skeletal muscle regeneration through the IGF-Akt pathway.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2022
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Glycerol induces early fibrosis in regenerating rat skeletal muscle.The Journal of veterinary medical science · 2018
    Article
  13. BGP-15 improves contractile function of regenerating soleus muscle.Journal of muscle research and cell motility · 2018
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

9 authors at 1 institution in 2 countries.

Marcelo G PereiraDepartment of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 2415, Sao Paulo, SP 05508-000, Brazil. pereiramg@gmail.com.
Meiricris T SilvaDepartment of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 2415, Sao Paulo, SP 05508-000, Brazil. me_tomaz@hotmail.com.
Eduardo O C CarlassaraDepartment of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 2415, Sao Paulo, SP 05508-000, Brazil. eduardo.carlassara@usp.br.
Dawit A GonçalvesDepartment of Physiology and Biochemistry/Immunology, School of Medicine, University of Sao Paulo, Bandeirantes Av. 3900, Ribeirao Preto, SP 14049-900, Brazil. dawitapg@yahoo.com.br.
Paulo A AbrahamsohnDepartment of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 1524, Sao Paulo, SP 05508-000, Brazil. pauloabrahamsohn@gmail.com.
Isis C KettelhutDepartment of Physiology and Biochemistry/Immunology, School of Medicine, University of Sao Paulo, Bandeirantes Av. 3900, Ribeirao Preto, SP 14049-900, Brazil. idckette@fmrp.usp.br.
Anselmo S MoriscotDepartment of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 2415, Sao Paulo, SP 05508-000, Brazil. moriscot@usp.br.
Marcelo S AokiSchool of Arts, Sciences and Humanities, University of Sao Paulo, Arlindo Bettio Av. 1000, Sao Paulo, SP 03828-000, Brazil. aoki.ms@usp.br.
Elen H MiyabaraDepartment of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Prof. Lineu Prestes Av. 2415, Sao Paulo, SP 05508-000, Brazil. elenm@usp.br.
Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated the effect of leucine supplementation on the skeletal muscle regenerative process, focusing on the remodeling of connective tissue of the fast twitch muscle tibialis anterior (TA). Young male Wistar rats were supplemented with leucine (1.35 g/kg per day); then, TA muscles from the left hind limb were cryolesioned and examined after 10 days. Although leucine supplementation induced increased protein synthesis, it was not sufficient to promote an increase in the cross-sectional area (CSA) of regenerating myofibers (p > 0.05) from TA muscles. However, leucine supplementation reduced the amount of collagen and the activation of phosphorylated transforming growth factor-β receptor type I (TβR-I) and Smad2/3 in regenerating muscles (p < 0.05). Leucine also reduced neonatal myosin heavy chain (MyHC-n) (p < 0.05), increased adult MyHC-II expression (p < 0.05) and prevented the decrease in maximum tetanic strength in regenerating TA muscles (p < 0.05). Our results suggest that leucine supplementation accelerates connective tissue repair and consequent function of regenerating TA through the attenuation of TβR-I and Smad2/3 activation. Therefore, future studies are warranted to investigate leucine supplementation as a nutritional strategy to prevent or attenuate muscle fibrosis in patients with several muscle diseases.

Indexed as

Dietary SupplementsTibiaAnimalsCollagenConnective TissueLeucineMaleMuscle, SkeletalMyofibrilsMyosin Heavy ChainsProtein Serine-Threonine KinasesRatsRats, WistarReceptors, Transforming Growth Factor betaReceptor, Transforming Growth Factor-beta Type IRegenerationCollagenLeucineMyosin Heavy ChainsProtein Serine-Threonine KinasesReceptors, Transforming Growth Factor betaReceptor, Transforming Growth Factor-beta Type ISmad2 ProteinSmad2 protein, ratSmad3 ProteinSmad3 protein, ratTgfbr1 protein, rat

Identifiers

PMID25268835
PMCPMC4210903
OpenAlexW2008791574

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.