Skeletal Remodeling
Skeletal Remodeling - Related Videos
02:54
Nucleosome Remodeling
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2020
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure. Nucleosome remodeling complex Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
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.
07:31
A Model of Cardiac Remodeling Through Constriction of the Abdominal Aorta in Rats
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Cited by 26 •
2016
A rat model of abdominal aortic constriction that induces cardiac hypertrophy and remodeling is described. An efficient, highly-reproducible, and minimally-invasive method is used to provide a simple yet useful platform for research in myocardial hypertrophy and dysfunction.
10:14
Biochemical Assays for Analyzing Activities of ATP-dependent Chromatin Remodeling Enzymes
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Cited by 4 •
2014
Here we describe biochemical assays that can be used to characterize ATP-dependent chromatin remodeling enzymes for their abilities to 1) catalyze ATP-dependent nucleosome sliding, 2) engage with nucleosome substrates, and 3) hydrolyze ATP in a nucleosome- or DNA-dependent manner.
FAQs
The sequence matters because removal and replacement must remain coupled. Osteoclasts first dissolve and remove old or damaged matrix, creating the condition for osteoblasts to deposit new bone. If these activities become mismatched, renewal may no longer preserve skeletal strength or normal mineral balance. Coupling therefore links tissue repair with maintenance of the whole skeleton.
Osteocytes provide the strain-sensing component of the cycle. By detecting mechanical changes within bone, they help coordinate osteoclast and osteoblast activity, allowing tissue renewal to respond to changing physical demands. This signaling role shows that remodeling is not simply a repeating replacement routine; it also supports skeletal adaptation as mechanical requirements change.
The resorption and formation phases help regulate the relationship between bone tissue and mineral balance. Osteoclast activity removes mineralized matrix, while osteoblast activity supports replacement with new bone. Their coordination allows the skeleton to participate in maintaining calcium and phosphate homeostasis while continuing to preserve tissue structure and strength.
Osteoclast-mediated removal clears old or damaged matrix that could otherwise compromise the tissue. Subsequent osteoblast activity replaces that material with new bone, producing a renewal cycle that repairs microscopic damage. This ongoing repair helps maintain skeletal strength over time rather than allowing small defects to accumulate throughout the bone.
A useful analysis follows the linked phases of matrix removal, new bone formation, and osteocyte coordination. Researchers can then relate this sequence to the outcomes emphasized in biology: repair of microscopic damage, preservation of skeletal strength, adaptation to mechanical demands, and mineral homeostasis. Considering all phases prevents the process from being interpreted as resorption alone.
The process provides a biological framework for understanding conditions involving altered bone density or turnover. In osteoporosis, changes in remodeling can be considered in relation to skeletal strength and mineralized tissue. During fracture healing, the same renewal principles help explain how bone tissue participates in repair. These applications connect cellular activity with clinically important skeletal outcomes.