Cited by 35Muscle Physiology and DisordersNutrition and Health in AgingMuscle metabolism and nutrition

Non‐passaged muscle precursor cells from 32‐month old rat skeletal muscle have delayed proliferation and differentiation

Open access
Zwetsloot, K. A., Childs, T. E., Gilpin, L. T., Booth, F. W.·2013·Cell Proliferation

Abstract

Objectives: The systemic environment and satellite cell dysfunction have been proposed as important contributors in the development of sarcopenia and impaired skeletal muscle regrowth with ageing. In the present study, we investigated effects of serum age on proliferation of muscle precursor cells (MPC s) isolated from skeletal muscles of young and old rats. Materials and methods: We examined proliferation and subsequent differentiation of non‐passaged MPC s isolated from skeletal muscles of 1‐, 3‐ and 32‐month old rats over a 72‐h time course, using a serum cross‐over design. Results and conclusions: We found no effect of serum age on MPC proliferation, but we did discover that MPCs isolated from skeletal muscle of 32‐month old rats had delayed onset of, and exit from proliferation, compared to MPCs isolated from skeletal muscle of 1‐month old rats. Delayed proliferation of MPCs from 32‐month old rats was associated with delayed p38 MAPK phosphorylation, and MyoD and p21 Cip1 protein expression. We also demonstrate that MPCs from 32‐month old rats exhibited lower levels of muscle creatine kinase m RNA compared to 1‐month old rats, but elevated levels of myogenin m RNA, when stimulated to differentiate after 36 h proliferation. These findings suggest that delayed entry and exit of the cell cycle observed in MPCs from 32‐month old rats may compromise their ability to respond to differentiation stimuli and subsequently impair myogenic potential of 32‐month old skeletal muscle, in this model.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/cpr.12007

Cites

51 of 51 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Muscle cells can regenerate through satellite mesenchymal progenitor cells, but their numbers fall with age, contributing to reduced muscle function.

    “While muscle cells can regenerate through satellite mesenchymal progenitor cells, their numbers decline with age, which contributes to reduced muscle function88,89.”

    From Sarcopenic obesity in older adults: aetiology, epidemiology and treatment strategies (2018) · cites this paper as [89]

    The Introduction (page unavailable) says satellite cells are muscle progenitor cells involved in skeletal-muscle repair and growth, and that their dysfunction could contribute to sarcopenia. The Discussion (page unavailable) reports delayed proliferation of precursor cells from old rats, but our copy does not establish that satellite-cell numbers decline with age or that a decline in numbers causes reduced muscle function. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Aging-induced myosteatosis promotes lipotoxicity and contributes to inflammation.

    “Furthermore, aging-induced myosteatosis promotes lipotoxicity (Lptx) and contributes to inflammation [49, 50].”

    From The critical role of oxidative stress in sarcopenic obesity (2021) · cites this paper as [50]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Zwetsloot, K. A., Childs, T. E., Gilpin, L. T., & Booth, F. W.
Affiliations
  • Appalachian State University (US)
  • University of Missouri (US)
Venue
Cell Proliferation
Publisher
Wiley
Published
2012-12-21
Volume
46
Issue
1
Pages
45-57
ISSN
  • 0960-7722 (ISSN-L)
  • 1365-2184
OpenAlex
W2042183830
Cited by
35
References
51
Citations by year
2025: 2 · 2024: 1 · 2023: 2 · 2022: 7 · 2021: 2 · 2020: 3 · 2018: 2 · 2017: 5 · 2016: 4 · 2015: 3 · 2014: 2 · 2013: 2
FWCI
0.90
Type
journal article
Language
en
Open access
Locations
  • Cell Proliferation (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • NC Digital Online Collection of Knowledge and Scholarship (The University of North Carolina at Greensboro) (submittedVersion)
  • Figshare (submittedVersion)
  • Appalachian State University
Funders
  • University of Missouri
  • National Institutes of Health
  • National Institute on Aging (R01AG018780, R01 AG18780)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
muscle precursor cells, satellite cells, skeletal muscle aging, sarcopenia, myogenesis, p38 MAPK phosphorylation, MyoD, p21, myogenin, creatine kinase, cell cycle, myogenic potential, rats
MeSH terms
Animals, Cell Differentiation, Cells, Cultured, Creatine Kinase, Male, Phosphorylation, Rats, Inbred F344, RNA, Messenger, Time Factors, MyoD Protein, Muscle, Skeletal, Myoblasts, p38 Mitogen-Activated Protein Kinases, Cell Proliferation, Cyclin-Dependent Kinase Inhibitor p21, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review