Bone Resorption
Bone Resorption - Related Videos
04:46
Resorption Pit Assay: An In Vitro Technique to Quantify Calcium Resorption Activity of Mature Osteoclasts using Calcium Phosphate-Coated Culture Plates
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2025
In this video, we describe an in vitro osteoclastic resorption assay on calcium phosphate-coated cell culture plates cultured with human peripheral blood mononuclear cell-derived osteoclasts. The osteoclasts form a characteristic actin ring on the calcium phosphate-coated matrix of the cell culture plate and degrade the matrix within the actin ring region to release calcium and phosphate ions, resulting in the formation of distinct resorption pits within the degraded matrix.
08:49
Models of Bone Metastasis
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Cited by 115 •
2012
Animal models are frequently utilized to study cancer metastasis to bone. In this protocol we will describe two common methods of tumor inoculation for bone metastasis studies and briefly describe some of the analyses utilized to monitor and quantify these models.
07:29
Undecalcified Bone Preparation for Histology, Histomorphometry and Fluorochrome Analysis
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Cited by 32 •
2010
Undecalcified bone histology provides important information for a variety of clinical and research applications. It is technically challenging, particularly with large size specimens. This video illustrates the process of producing good quality sections and demonstrates the technical difficulties and methods with which to overcome them.
07:17
Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
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Cited by 293 •
2016
Here we present a protocol for the dissection of hind limb long bones (femurs and tibiae) from the laboratory mouse. We further describe a rapid technique for bone marrow isolation from these bones that utilizes centrifugation for removal of bone marrow from the bone marrow space.
03:56
Bone Marrow Aspiration: A Method to Obtain Bone Marrow to Examine Cell Morphology
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2023
This video describes the technique of aspirating bone marrow from iliac spine and smear preparation for biopsy. In the example, we perform bone marrow aspiration from an acute myeloid leukemia (AML) patient and examine the cells to check for measurable residual disease (MRD), an important prognostic biomarker.
FAQs
The sealed compartment created by an osteoclast concentrates acidity directly against the mineralized surface. This acidic environment dissolves hydroxyapatite, the mineral component of bone, while proteolytic enzymes attack the exposed collagen-rich organic matrix. Separating these activities from the surrounding tissue allows degradation to occur at a defined bone surface and supports controlled removal during skeletal renewal.
Bone Resorption must remain coupled to osteoblast-mediated formation so that removal does not simply reduce skeletal tissue. Osteoclasts clear older or damaged mineralized material, while osteoblasts replace it with new bone. This coordinated remodeling renews the skeleton and helps preserve its structure as tissues adapt to changing mechanical demands.
By dissolving hydroxyapatite, bone resorption releases mineral components from skeletal tissue and contributes to the regulation of calcium and phosphate availability. The process therefore serves more than a structural function: it links local remodeling of bone with broader mineral balance. Its effects depend on how resorption operates alongside new bone formation.
Mechanical demands provide an important context for skeletal adaptation. Bone resorption participates in remodeling, where existing tissue is removed and replaced as the skeleton responds to functional requirements. Studying this relationship helps explain how bone renewal can support changing mechanical conditions while also maintaining mineralized tissue and removing damaged regions.
Bone Resorption is studied in osteoporosis and inflammatory bone loss because changes in osteoclast activity can alter the balance between tissue removal and replacement. Examining the process helps researchers connect cellular degradation of mineralized bone with disease-related skeletal changes. It also provides biological context for evaluating therapies that modify osteoclast activity.
During skeletal development and fracture repair, bone must be renewed and reshaped rather than remain unchanged. Bone resorption contributes to this broader remodeling framework by removing mineralized tissue as part of coordinated skeletal change. Investigating its activity helps clarify how cellular removal processes relate to development, repair, and restoration of bone structure.