Evidence map›Paper›PMID 17267614›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2007

Lack of myostatin results in excessive muscle growth but impaired force generation.

Helge Amthor, Raymond Macharia, Roberto Navarrete, Markus Schuelke, Susan C Brown, Anthony Otto, Thomas Voit, Francesco Muntoni, Gerta Vrbóva, Terence Partridge and 3 more

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 201 papers.

0numbers the graph read from it
0cells of the map it votes in
201citing papers in PubMed
9.9field-weighted citation impact, top 1% 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

201 citing papers in PubMed, 404 citations in OpenAlex.

  1. Review
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  5. Article
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  8. Novel biomarkers for sarcopenia: a narrative review.Journal of orthopaedic surgery and research · 2026
    Review
  9. Obestatin: canonical and unexpected functions.Reviews in endocrine & metabolic disorders · 2026
    Review
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  11. Review
  12. Article
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141 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

13 authors at 7 institutions in 3 countries.

Helge AmthorDepartment of Paediatrics, University Hospital of Essen, Essen, Germany. helge.amthor@psl.aphp.fr
Raymond Macharia
Roberto Navarrete
Markus Schuelke
Susan C Brown
Anthony Otto
Thomas Voit
Francesco Muntoni
Gerta Vrbóva
Terence Partridge
Peter Zammit
Lutz Bunger
Ketan Patel
Royal Veterinary College · GBImperial College London · GBCharité - Universitätsmedizin Berlin · DEChildren's National · USEssen University Hospital · DEKing's College London · GBUniversity College London · GB

Funding

Wellcome TrustWellcome Trust 066195Wellcome Trust 078649
6 · The paper itself

Abstract

The lack of myostatin promotes growth of skeletal muscle, and blockade of its activity has been proposed as a treatment for various muscle-wasting disorders. Here, we have examined two independent mouse lines that harbor mutations in the myostatin gene, constitutive null (Mstn(-/-)) and compact (Berlin High Line, BEH(c/c)). We report that, despite a larger muscle mass relative to age-matched wild types, there was no increase in maximum tetanic force generation, but that when expressed as a function of muscle size (specific force), muscles of myostatin-deficient mice were weaker than wild-type muscles. In addition, Mstn(-/-) muscle contracted and relaxed faster during a single twitch and had a marked increase in the number of type IIb fibers relative to wild-type controls. This change was also accompanied by a significant increase in type IIB fibers containing tubular aggregates. Moreover, the ratio of mitochondrial DNA to nuclear DNA and mitochondria number were decreased in myostatin-deficient muscle, suggesting a mitochondrial depletion. Overall, our results suggest that lack of myostatin compromises force production in association with loss of oxidative characteristics of skeletal muscle.

Indexed as

AnimalsFemaleMaleMiceMice, Inbred C57BLMice, KnockoutMuscle ContractionMuscle DevelopmentMuscle, SkeletalMyostatinOxidation-ReductionTransforming Growth Factor betaMstn protein, mouseMyostatinTransforming Growth Factor beta

Identifiers

PMID17267614
PMCPMC1794294
OpenAlexW2099629426

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.