Evidence map›Paper›PMID 38812056›Full record

ArticleSkeletal muscle2024

Studying intramuscular fat deposition and muscle regeneration: insights from a comparative analysis of mouse strains, injury models, and sex differences.

Alessandra M Norris, Kiara E Fierman, Jillian Campbell, Rhea Pitale, Muhammad Shahraj, Daniel Kopinke

Abstract readComparative Study
In one paragraph

Article in Skeletal muscle, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Fibro-adipogenic progenitor cells from murine SMA muscles are intrinsically adipogenic.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Intramuscular adipose tissue: from progenitor to pathology.American journal of physiology. Cell physiology · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. 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

6 authors.

Alessandra M NorrisDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA.
Kiara E FiermanDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA.
Jillian CampbellDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA.
Rhea PitaleDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA.
Muhammad ShahrajDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA.
Daniel KopinkeDepartment of Pharmacology and Therapeutics, Myology Institute, University of Florida, Gainesville, FL, USA. dkopinke@ufl.edu.

Funding

Training In Rehabilitation and Neuromuscular PlasticityT32HD043730 · NICHD · UNIVERSITY OF FLORIDA · PI DAVID D FULLER · 2003 to 2026
$5.3M
The role of fatty fibrosis in chronic limb threatening ischemia pathobiologyR01HL171050 · NHLBI · UNIVERSITY OF FLORIDA · PI Daniel Kopinke, Terence E Ryan · 2024 to 2026
$2.0M
Ciliary Hedgehog signaling during adult tissue repair and diseaseR01AR079449 · NIAMS · UNIVERSITY OF FLORIDA · PI Daniel Kopinke · 2022 to 2026
$1.6M
National Institute of Child Health and Human Development T32HD043730NHLBI NIH HHS R01 HL171050NHLBI NIH HHS R01HL171050NIAMS NIH HHS R01 AR079449NIAMS NIH HHS R01AR079449
6 · The paper itself

Abstract

Intramuscular fat (IMAT) infiltration, pathological adipose tissue that accumulates between muscle fibers, is a shared hallmark in a diverse set of diseases including muscular dystrophies and diabetes, spinal cord and rotator cuff injuries, as well as sarcopenia. While the mouse has been an invaluable preclinical model to study skeletal muscle diseases, they are also resistant to IMAT formation. To better understand this pathological feature, an adequate pre-clinical model that recapitulates human disease is necessary. To address this gap, we conducted a comprehensive in-depth comparison between three widely used mouse strains: C57BL/6J, 129S1/SvlmJ and CD1. We evaluated the impact of strain, sex and injury type on IMAT formation, myofiber regeneration and fibrosis. We confirm and extend previous findings that a Glycerol (GLY) injury causes significantly more IMAT and fibrosis compared to Cardiotoxin (CTX). Additionally, females form more IMAT than males after a GLY injury, independent of strain. Of all strains, C57BL/6J mice, both females and males, are the most resistant to IMAT formation. In regard to injury-induced fibrosis, we found that the 129S strain formed the least amount of scar tissue. Surprisingly, C57BL/6J of both sexes demonstrated complete myofiber regeneration, while both CD1 and 129S1/SvlmJ strains still displayed smaller myofibers 21 days post injury. In addition, our data indicate that myofiber regeneration is negatively correlated with IMAT and fibrosis. Combined, our results demonstrate that careful consideration and exploration are needed to determine which injury type, mouse model/strain and sex to utilize as preclinical model especially for modeling IMAT formation.

Indexed as

Adipose TissueFibrosisMice, Inbred C57BLMuscle, SkeletalRegenerationAnimalsDisease Models, AnimalFemaleGlycerolMaleMiceMice, 129 StrainSex CharacteristicsSpecies SpecificityGlycerol

Identifiers

PMID38812056
PMCPMC11134715

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.