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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
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Related Experiment Video

Updated: Mar 23, 2026

Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts
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Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts

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[Recent progress on osteocyte research].

Gang Wang, Chao-feng Lu, Min Li

    Zhongguo Gu Shang = China Journal of Orthopaedics and Traumatology
    |March 30, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Osteocytes, abundant bone cells, sense mechanical stress and regulate bone remodeling. They also play key roles in mineral balance, fat metabolism, and hematopoietic functions.

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    Area of Science:

    • Bone Biology
    • Cellular Physiology

    Context:

    • Osteocytes are the most abundant cells in bone tissue, embedded within the mineralized matrix.
    • They form a communication network crucial for maintaining bone health and function.
    • These cells are long-lived, often surviving as long as the organism itself.

    Purpose:

    • To elucidate the multifaceted roles of osteocytes in bone physiology.
    • To highlight their function as mechanosensors and regulators of bone remodeling.
    • To underscore their involvement in systemic functions beyond bone.

    Summary:

    • Osteocytes act as the primary receptors of mechanical stress in bone.
    • They convert mechanical signals into biochemical signals (e.g., PGE2, NO, ATP, Wnt/beta-catenin pathway) that regulate bone formation and resorption.
    • Osteocyte communication networks are vital for coordinating cellular activities and bone reconstruction.
    • Microcracks can disrupt osteocyte networks, leading to autophagy.
    • Osteocytes are also critical for regulating mineral homeostasis, fat metabolism, and hematopoiesis.

    Impact:

    • Understanding osteocyte function is key to developing therapies for bone diseases.
    • This research highlights osteocytes as central regulators of skeletal health and systemic metabolism.
    • Targeting osteocyte pathways could offer novel therapeutic strategies for metabolic and bone disorders.