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Related Concept Videos

Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...

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Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Enhanced initial bone regeneration with inorganic polyphosphate-adsorbed hydroxyapatite.

K Morita1, K Doi, T Kubo

  • 1Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical Sciences, Minami-ku, Hiroshima, Japan. moritak@hiroshima-u.ac.jp

Acta Biomaterialia
|January 9, 2010
PubMed
Summary

Inorganic polyphosphate (poly(P)) adsorbed onto calcium hydroxyapatite (IP-CHA) enhances bone regeneration. Composites with 25% and 50% poly(P)/IP-CHA showed significantly increased new bone formation in rabbit femurs.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Research

Background:

  • Inorganic polyphosphate (poly(P)) promotes fibroblast growth factor binding and osteoblastic differentiation.
  • Poly(P) shows potential for enhancing bone regeneration processes.
  • Interconnected porous calcium hydroxyapatite (IP-CHA) serves as a bone graft substitute.

Purpose of the Study:

  • To evaluate poly(P) adsorbed onto IP-CHA as a novel bone regeneration material.
  • To assess the efficacy of poly(P)/IP-CHA composites in promoting bone healing.
  • To determine the optimal concentration of poly(P) for bone regeneration.

Main Methods:

  • Preparation of poly(P)/IP-CHA composites with varying poly(P) concentrations (1%, 5%, 25%, 50%).
  • In vitro elution analysis of poly(P) from the composites.
  • In vivo histological evaluation of bone regeneration in rabbit femur defects after 1 and 2 weeks.

Main Results:

  • Poly(P) eluted from composites, with the highest concentration from 50% poly(P)/IP-CHA.
  • Granulation tissue ingrowth observed in all groups by week 1.
  • Significant new lamellar bone formation noted by week 2, particularly in 25% and 50% poly(P)/IP-CHA groups.

Conclusions:

  • Poly(P)/IP-CHA composites, especially at 25% and 50% concentrations, show promise for enhancing initial bone regeneration.
  • These findings suggest poly(P)/IP-CHA as a potential advanced biomaterial for orthopedic applications.
  • Further research is warranted to explore the long-term effects and mechanisms of poly(P) in bone healing.