Dissolution/precipitation behavior of biphasic calcium phosphate ceramics in bone-forming culture conditions

S. Akkapeddi, T. L. Arinzeh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Mesenchymal stem cells in combination with biphasic calcium phosphate ceramics, hydryoxyapatite/tricalcium phosphate ceramics, have been shown to induce bone formation in large, long bone defects. Gaining an understanding of the factors that may influence stem cell differentiation on these ceramics is important for developing improved scaffold materials. The objective of this study was to characterize the dissolution/precipitation behavior of calcium from this ceramic in conditions that simulate MSC differentiation into bone cells in vitro. 20/80 and 60/40 HA/TCP ceramics were immersed in control media (DMEM, 10% fetal bovine serum), OS media (control media containing dexamethasone, β-glycerophosphate, and ascorbic acid), or OS without dexamethasone. Ceramics were maintained in the media for up to 28 days at 37°C, 5% CO2, 95% humidity. The calcium level in the media was determined at days 4, 7, 14, 21 and 28 days. Calcium levels in the control media containing either ceramic dropped significantly over time as compared with control media prior to the immersion of the ceramic (day 0). The calcium level in the media containing 20/80 HA/TCP decreased the least as compared to 60/40 ceramics. The loss in calcium from the media indicates precipitation on the ceramic surface. These reactions may have an effect on MSC growth and differentiation.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE 29th Annual Northeast Bioengineering Conference
EditorsStanley Reisman, Richard Foulds, Bruno Mantilla
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages195-196
Number of pages2
ISBN (Electronic)0780377672
DOIs
StatePublished - Jan 1 2003
Event29th IEEE Annual Northeast Bioengineering Conference, NEBC 2003 - Newark, United States
Duration: Mar 22 2003Mar 23 2003

Publication series

NameProceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC
Volume2003-January
ISSN (Print)1071-121X
ISSN (Electronic)2160-7001

Other

Other29th IEEE Annual Northeast Bioengineering Conference, NEBC 2003
CountryUnited States
CityNewark
Period3/22/033/23/03

All Science Journal Classification (ASJC) codes

  • Bioengineering

Keywords

  • Biological materials
  • Biomedical engineering
  • Bone tissue
  • Bovine
  • Calcium
  • Ceramics
  • Humidity
  • In vitro
  • Orthopedic surgery
  • Stem cells

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