Skeletal Muscle Biopsy
Skeletal Muscle Biopsy - Related Videos
11:27
Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
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Cited by 24 •
2015
Methods for biopsy of Vastus lateralis, preparation of purified mitochondria, and respirometric profiling are described. The use of small muscle volume makes this technique suitable for clinical research applications.
07:16
Human Vastus Lateralis Skeletal Muscle Biopsy Using the Weil-Blakesley Conchotome
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Cited by 18 •
2016
This video demonstrates the technique of percutaneous muscle biopsy of the human vastus lateralis using the Weil-Blakesley conchotome.
09:45
Mitochondrial Isolation from Skeletal Muscle
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Cited by 47 •
2011
This protocol describes a procedure to study the respiration of mitochondria isolated from skeletal muscles. This method was adapted from Scorrano et al. (2007). The mitochondrial isolation procedure requires about 2 hours. The mitochondrial respiration can be completed in about 1 hour.
14:36
Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells
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Cited by 6 •
2010
The micro-dissected explants technique is a robust and reliable method for isolating proliferative skeletal muscle cells from juvenile, adult or embryonic muscles as a source of skeletal muscle stem cells. Uniquely, these cells have been clonally derived to produce skeletal muscle stem cell lines used for in vivo transplantation.
01:48
Classification of Skeletal Muscle Fibers
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2019
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions. Slow-Twitch Muscle Fibers Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
FAQs
Preservation maintains the muscle sample’s structural features so investigators can evaluate fibers, connective tissue, blood vessels, and cellular components accurately. The preserved tissue can then support several complementary analyses, including microscopic examination, enzyme assays, and genetic testing. Matching preservation to the intended analysis helps reveal whether abnormalities are structural, biochemical, or molecular.
A sample may reveal patterns associated with muscle damage, inflammation, degeneration, or abnormal metabolism. These findings are interpreted from the condition of the tissue and from biochemical or molecular results rather than from a single observation alone. Distinguishing among these patterns can support evaluation of neuromuscular disorders and clarify the biological process affecting the muscle.
These tissue components provide different biological information. Muscle fibers can show changes in the contractile tissue, while connective tissue and blood vessels may contribute additional structural context. Cellular components can supply further microscopic evidence of abnormality. Examining the components together gives a broader picture of tissue organization and helps relate visible changes to possible disease mechanisms.
Histology examines tissue structure under the microscope, enzyme assays assess biochemical activity, and genetic methods investigate molecular information. Because each approach measures a different level of biology, their results can be compared to determine whether an observed muscle problem primarily involves organization, metabolism, or genetic factors. This combined analysis strengthens interpretation of the sample.
Tissue may be obtained with a needle or through a small incision, depending on the procedure selected. The clinician removes a small sample and preserves it so its structural features remain suitable for later analysis. The preserved specimen can then be directed toward microscopic, biochemical, or molecular examination according to the diagnostic or research objective.
Clinicians may use the procedure when tissue-level evidence is needed to evaluate a suspected neuromuscular disorder. Microscopic patterns, enzyme activity, and genetic findings can provide complementary information about muscle damage, inflammation, degeneration, or abnormal metabolism. The resulting evidence supports biological interpretation of the disorder rather than relying only on broader clinical assessment.
In research, biopsy samples support investigations of muscle development, physiology, disease mechanisms, and responses to treatment. Structural, biochemical, and molecular measurements allow investigators to compare tissue states and examine how muscle biology changes under different conditions. This makes the procedure useful for connecting cellular findings with broader questions about normal function and disease progression.