Related Experiment Video
Updated: Jan 19, 2026
Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
Published on: July 29, 2016
Endurance exercise leads to beneficial molecular and physiological effects in a mouse model of myotonic dystrophy
Lydia Sharp1,2, Diana C Cox1,3, Thomas A Cooper1,4,5
1Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.
Introduction:
Myotonic dystrophy type 1 (DM1) is a multisystemic disease caused by expansion of a CTG repeat in the 3' UTR of the Dystrophia Myotonica-Protein Kinase (DMPK) gene. While multiple organs are affected, more than half of mortality is due to muscle wasting.
Methods:
It is unclear whether endurance exercise provides beneficial effects in DM1. Here, we show that a 10-week treadmill endurance exercise program leads to beneficial effects in the HSALR mouse model of DM1.
Results:
Animals that performed treadmill training displayed reduced CUGexp RNA levels, improved splicing abnormalities, an increase in skeletal muscle weight and improved endurance capacity.
Discussion:
These results indicate that endurance exercise does not have adverse effects in HSALR animals and contributes to beneficial molecular and physiological outcomes.
Insights
Endurance exercise shows benefits for myotonic dystrophy type 1 (DM1) by improving muscle health and reducing toxic RNA in a mouse model. This suggests exercise is safe and effective for DM1 patients.
Area of Science:
- Biomedical Science
- Genetics
- Exercise Physiology
Background:
- Myotonic dystrophy type 1 (DM1) is a genetic disorder characterized by muscle wasting, affecting multiple organs.
- The role of endurance exercise in managing DM1 remains unclear, particularly regarding its impact on molecular and physiological markers.
Purpose of the Study:
- To investigate the effects of a 10-week treadmill endurance exercise program on the HSALR mouse model of DM1.
- To determine if endurance exercise offers beneficial outcomes or adverse effects in DM1.
Main Methods:
- HSALR mice, a model for DM1, underwent a 10-week treadmill exercise protocol.
- Key molecular and physiological parameters were assessed, including CUG repeat RNA levels, splicing abnormalities, skeletal muscle weight, and endurance capacity.
Main Results:
- Treadmill training led to a reduction in CUGexp RNA levels.
- Exercise improved splicing abnormalities and increased skeletal muscle weight.
- Mice in the exercise group demonstrated enhanced endurance capacity.
Conclusions:
- Endurance exercise demonstrated beneficial molecular and physiological effects in the HSALR mouse model of DM1.
- The findings suggest that endurance exercise is safe and does not induce adverse effects in this DM1 model.
- Regular endurance exercise may be a viable therapeutic strategy for improving outcomes in myotonic dystrophy type 1.
More Related Videos
07:52Assessment of Murine Exercise Endurance Without the Use of a Shock Grid: An Alternative to Forced Exercise
Published on: August 14, 2014
07:26Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
Published on: October 17, 2018
Related Concept Videos
09:39Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
07:52Assessment of Murine Exercise Endurance Without the Use of a Shock Grid: An Alternative to Forced Exercise
07:26Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
05:54A Simple and Low-cost Assay for Measuring Ambulation in Mouse Models of Muscular Dystrophy
09:21Muscle Function Obtained with Motion Mode Ultrasound and Surface Electromyography during Core Endurance Exercise
08:58Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis