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Bone Remodeling and Repair01:31

Bone Remodeling and Repair

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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 Formation by Endochondral Ossification01:24

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Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
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Bone Formation by Intramembranous Ossification01:29

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Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
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Role of Hematopoietic Growth Factors01:28

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Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
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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.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
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Updated: May 4, 2026

Covalent Binding of BMP-2 on Surfaces Using a Self-assembled Monolayer Approach
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Bone morphogenetic proteins: facts, challenges, and future perspectives.

A C Carreira1, F H Lojudice, E Halcsik

  • 1Biochemistry Department, Chemistry Institute, and Cell and Molecular Therapy Center NUCEL-NETCEM, School of Medicine, University of São Paulo, São Paulo, SP, Brazil.

Journal of Dental Research
|January 7, 2014
PubMed
Summary
This summary is machine-generated.

Bone morphogenetic proteins (BMPs) regulate development and tissue repair. While beneficial in orthopedic applications, high doses of recombinant human BMPs (rhBMPs) may cause side effects, necessitating further safety and efficacy trials.

Keywords:
bioengineeringbiomaterial(s)bone remodeling/regenerationgrowth factor(s)regenerative medicinesystematic reviews and evidence-based medicine

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Regenerative Medicine

Background:

  • Bone morphogenetic proteins (BMPs), part of the TGF-β superfamily, are crucial regulators of embryogenesis and skeletal tissue formation and repair.
  • Advanced cell and molecular biology techniques, alongside transgenic animal studies, have elucidated the complex mechanisms governing BMP activity.
  • Genetic engineering enables large-scale BMP production for clinical applications, often requiring controlled delivery systems like collagen or ceramics to enhance efficacy and prevent systemic diffusion.

Purpose of the Study:

  • To review and discuss critical data concerning BMP structure, mechanisms of action, and potential clinical applications.
  • To examine the benefits and drawbacks of using recombinant human BMPs (rhBMPs) in orthopedic and oral surgery.
  • To highlight the need for rigorous clinical trials to confirm the safety and efficacy of rhBMPs, particularly in off-label uses.

Main Methods:

  • Review of existing literature on BMPs, including cell and molecular biology studies, transgenic animal models, and clinical orthopedic trials.
  • Analysis of data regarding the use of BMPs in conjunction with delivery systems for controlled release.
  • Examination of reported side effects and off-label applications of rhBMPs.

Main Results:

  • FDA-approved rhBMPs (2 and 7) have demonstrated benefits in orthopedic applications.
  • Potential side effects associated with high-dose rhBMPs include swelling, seroma, and increased cancer risk.
  • BMPs show promise in periodontal regeneration, sinus lifts, and non-union bone repair in oral surgery, though often used off-label.

Conclusions:

  • Controlled delivery systems are essential for maximizing BMP biological activity at surgical sites.
  • Despite demonstrated benefits, the clinical application of rhBMPs, especially off-label, requires more robust evidence from well-designed randomized controlled trials to establish safety and efficacy.
  • Further research is needed to optimize BMP dosage and delivery to mitigate potential adverse effects while maximizing therapeutic benefits.