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Related Concept Videos

Bone Remodeling and Repair01:31

Bone Remodeling and Repair

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 bone...
Bone Remodeling01:40

Bone Remodeling

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.
Fractures: Bone Repair01:27

Fractures: Bone Repair

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 procedure...
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
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Whole Body Regeneration01:33

Whole Body Regeneration

Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential; even...
Bone Disorders01:29

Bone Disorders

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.
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Use of Human Perivascular Stem Cells for Bone Regeneration
07:05

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Published on: May 25, 2012

[Regenerative medicine for bone and joint].

Yoshinori Takakura1, Kenji Kawate, Yasuhito Tanaka

  • 1Department of Orthopaedic Surgery, Nara Medical University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|May 10, 2008
PubMed
Summary

Mesenchymal stem cells from bone marrow were used to create regenerative bone and cartilage tissues for treating bone and joint diseases. Early results show successful tissue regeneration without rejection or infection.

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Orthopedic Surgery

Background:

  • Current regenerative medicine utilizes embryonic and tissue stem cells.
  • Mesenchymal stem cells (MSCs) show potential for bone and cartilage regeneration.
  • Previous studies explored MSCs for tissue repair.

Purpose of the Study:

  • To develop regenerative bone and cartilage using MSCs from bone marrow.
  • To evaluate the efficacy of MSC-derived tissues in treating bone and joint pathologies.
  • To assess the safety and outcomes of these regenerative treatments.

Main Methods:

  • Harvesting bone marrow and isolating MSCs.
  • Culturing MSCs to form regenerative bone and cartilage tissues.
  • Seeding tissues onto scaffolds and total prostheses.
  • Implanting tissues into patients with bone and joint lesions (cartilaginous damage, osteoarthritis, bone tumors, congenital anomalies).

Main Results:

  • Successful generation of regenerative bone and cartilage tissues.
  • Positive clinical outcomes observed in patients following implantation.
  • Absence of tissue rejection or infection in the treated patients.
  • Early follow-up data indicate promising therapeutic potential.

Conclusions:

  • Mesenchymal stem cells are a viable source for creating regenerative bone and cartilage.
  • This approach offers a promising treatment strategy for various bone and joint diseases.
  • Further long-term studies are warranted to confirm sustained efficacy and safety.