Mouse Muscle Assessment
Mouse Muscle Assessment - Related Videos
14:02
Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles
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Cited by 53 •
2012
We describe a method to directly measure muscle force, muscle power, contractile kinetics and fatigability of isolated skeletal muscles in an in vitro system using field stimulation. Valuable information on Ca2+ handling properties and contractile machinery of the muscle can be obtained using different stimulating protocols.
08:49
Reproducible Mouse Sciatic Nerve Crush and Subsequent Assessment of Regeneration by Whole Mount Muscle Analysis
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Cited by 59 •
2012
In this report we describe a method to crush mouse sciatic nerve. This method uses readily available hemostatic forceps and easily and reproducibly produces complete sciatic nerve crush. In addition, we describe a method to prepare muscle whole mounts suitable for analysis of nerve regeneration after sciatic nerve crush.
03:26
Measuring Compound Muscle Action Potentials in Mouse Forelimb Muscles In Vivo
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2025
This video demonstrates an in vivo technique for measuring compound muscle action potential (CMAP) in mice. It outlines the steps for setting up electrodes, stimulating forelimb neurons that innervate muscle fibers, and recording muscle responses. The technique assesses neuronal demyelination and functional neuron loss.
11:22
Assessment of Calcium Sparks in Intact Skeletal Muscle Fibers
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Cited by 15 •
2014
Described here is a method to directly measure calcium sparks, the elementary units of Ca2+ release from sarcoplasmic reticulum in intact skeletal muscle fibers. This method utilizes osmotic-stress-mediated triggering of Ca2+ release from ryanodine receptor in isolated muscle fibers. The dynamics and homeostatic capacity of intracellular Ca2+ signaling can be employed to assess muscle function in health and disease.
10:32
Assessing Functional Performance in the Mdx Mouse Model
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Cited by 184 •
2014
The primary outcome measure in clinical trials for neuromuscular disorders is generally improved muscle function. Therefore, assessing the effect of potential therapeutic compounds on muscle performance pre clinically in mouse models is of great importance. We here describe several functional tests to address this.
FAQs
A single measurement cannot show whether a muscle change is structural, cellular, or functional. Muscle weight indicates overall mass, fiber size reflects cellular dimensions, tissue organization describes arrangement, and force production captures performance. Examining these measures together helps researchers connect changes across biological levels and determine whether altered muscle structure is accompanied by impaired or improved function.
Fiber size provides a cellular-scale measure of how muscle tissue changes, while tissue organization shows whether the muscle retains its normal structural arrangement. Comparing these features across experimental groups can identify responses associated with genetic changes, injury, exercise, aging, or treatment. Their interpretation becomes stronger when paired with muscle mass and force measurements.
Force production shows how effectively muscle tissue performs, complementing measurements that describe its size or organization. A muscle may exhibit measurable changes in mass, fiber dimensions, or tissue structure without those findings alone explaining whole-animal performance. Including force data allows investigators to relate tissue-level observations to functional consequences in biological experiments.
The assessment can reveal muscle responses to several biological conditions, including genetic changes, injury, exercise, aging, and treatment. Each condition may influence muscle mass, fiber size, tissue organization, or force production differently. Considering the experimental context is therefore essential when interpreting whether an observed change reflects damage, adaptation, disease-related biology, regeneration, or an intervention response.
Researchers integrate measurements of muscle weight, fiber size, tissue organization, and force production rather than relying on one outcome. This approach links tissue and cellular observations with functional performance. The resulting profile can distinguish changes in muscle structure from changes in capacity, providing a more informative basis for comparing normal and experimentally altered mice.
It is useful when investigators need measurable evidence of how muscle responds to disease-related processes, injury, exercise, aging, genetic changes, or treatment. The measurements support studies of muscle disorders and regeneration while also helping evaluate experimental interventions. Because the approach connects tissue-level findings with whole-animal performance, it provides context for interpreting biological outcomes.