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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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Bone Disorders01:29

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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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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Fractures: Bone Repair01:27

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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Hormones and Bone Tissue01:17

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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The Functions of the Skeletal System01:22

The Functions of the Skeletal System

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The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
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Related Experiment Video

Updated: Jul 15, 2025

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
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Inflammatory Processes Affecting Bone Health and Repair.

Haydee M Torres1, Katherine M Arnold1,2, Manuela Oviedo1

  • 1Department of Orthopedic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN, 55905, USA.

Current Osteoporosis Reports
|September 27, 2023
PubMed
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Inflammation negatively impacts bone health, affecting bone cells, senescence, pain, and healing. Therapies targeting senescent cells and reducing inflammatory factors may improve bone health and healing.

Keywords:
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Area of Science:

  • Osteoimmunology
  • Cellular Biology
  • Bone Physiology

Background:

  • Inflammation significantly impacts bone metabolism and health.
  • Osteoimmunology provides insights into bone loss mechanisms.
  • Senescence plays a role in inflamed bone conditions.

Purpose of the Study:

  • Review current understanding of inflammation's direct impacts on bone cells.
  • Examine the effect of senescence on inflamed bone.
  • Clarify inflammation's role in bone pain and healing.

Main Methods:

  • Literature review of recent advances in osteoimmunology.
  • Analysis of studies on inflammatory osteoclasts and senescent markers in bone.
  • Synthesis of research on neuro-osseous cross talk in inflammation.

Main Results:

  • Inflammatory osteoclasts contribute to bone loss.
  • Senescent bone cells are linked to inflammatory bone loss, suggesting senolytic therapy potential.
  • Inflammation generally impairs bone healing and increases fracture risk, except in initial stages.

Conclusions:

  • Targeting senescent cells and reducing inflammatory burden can mitigate negative effects on bone.
  • Modulating the osteo-immune axis is crucial for bone health.
  • Further research into inflammation's complex role in bone is warranted.