Bone Diseases
Bone Diseases - Related Videos
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.
05:54
Induction of Graft Versus Host Disease in Mouse Models via Allogeneic Bone Marrow and Splenic Cell Transplantation
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2025
This video demonstrates the induction of intestinal graft-versus-host disease, GvHD, in a lethally-irradiated recipient mouse using allogeneic hematopoietic stem cells and GvHD-inducing splenic alloreactive T lymphocytes. This protocol helps establish a severe acute intestinal GvHD model to understand the mechanism of the disease and develop innovative therapeutic options.
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.
04:32
Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions
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2025
This study established a rat femoral half-segmental defect model to evaluate the mechanical and osteogenic performance of bone substitute materials under load-bearing conditions without the use of internal or external fixation.
06:16
Microhardness Measurements on Tooth and Alveolar Bone in Rodent Oral Disease Models
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Cited by 8 •
2024
Microhardness is a mechanical property and an informative parameter for evaluating hard tissue pathophysiology. Here, we demonstrate a standardized protocol (sample preparation, polishing, flat surface, and indentation sites) for microhardness analysis in tooth and alveolar bone in rodent oral disease models, namely, dental fluorosis, and ligature-induced periodontal bone resorption.
FAQs
Bone strength depends on coordinated remodeling: osteoclasts remove older tissue, while osteoblasts produce new matrix. If resorption and formation become poorly balanced, bone architecture and density can change, weakening its mechanical function. Biology research therefore examines the cellular signaling that regulates these activities, helping explain why some disorders increase fracture risk or impair the preservation of healthy bone.
Disrupted remodeling changes how quickly old tissue is removed and new matrix is produced, whereas abnormal mineralization affects how that matrix acquires mineral content. These mechanisms can alter bone strength through different biological pathways. Distinguishing them allows researchers to relate a disease’s structural changes to the underlying process and to evaluate treatments aimed at preserving density or supporting repair.
Inherited mutations can disturb the biological processes that establish or maintain bone, producing disorders such as osteogenesis imperfecta. Their effects may appear in bone structure, strength, development, or function rather than arising solely from later environmental damage. Studying these mutations connects genetic information with cellular behavior and helps clarify how altered bone biology contributes to disease outcomes.
Researchers examine several connected levels of organization, including cellular signaling, bone architecture, and interactions between bone and surrounding tissues. This integrated approach links molecular or cellular changes with larger structural consequences. Comparing these features across conditions such as osteoporosis, osteogenesis imperfecta, and osteomyelitis helps identify whether disease is associated primarily with remodeling, mineralization, infection, inherited changes, or combinations of these factors.
Analysis of cellular signaling and bone architecture can reveal patterns associated with altered structure, strength, or development. These findings support earlier diagnosis and risk assessment by connecting biological changes with likely complications, including fractures. Examining interactions with surrounding tissues adds context, particularly when disease involves processes such as infection or impaired repair rather than changes confined to bone itself.
Mechanistic research identifies biological processes that treatments may need to influence, including preservation of bone density, promotion of repair, or reduction of fracture-related complications. The appropriate focus depends on the disorder’s underlying cause, such as remodeling disruption, abnormal mineralization, infection, or inherited mutation. Linking treatment goals to disease biology can improve the development of more targeted approaches.