Abstract
DNA synthesis and collagen formations on the implant material by cell culture in vitro are the most important phenotypical expression to estimate the biocompatibility. In this part, DNA synthesis and collagen formation on implant materials were quantitatively and qualitatively estimated by radioactive isotope H+ -thymidine to incorporate into DNA chains, H+ -proline to incorporate into type I collagen proteins followed by scintillation counting and antibody-antigen immunocytochemistry staining, respectively. Research results demonstrate that hydroxyapatite (HA) stimulates DNA synthesis and collagen formation on the material whereas this stimulation is restricted by adding spinel to the materials. There are statistical differences between the influences of material components on both DNA synthesis and collagen formation. It is supposed that porous materials can supply more platforms for cell anchoring, and more DNA and collagen are synthesised on the porous materials. Immersion in culture medium results in new HA crystal formation on the porous HA materials.
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Foundation item: British Biological Science and Research Council
Biography of the first author: RUAN Jian-ming, doctor of bioengineering, born in 1957, majoring in biomaterials & tissue engineering.
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Ruan, Jm., Grant, M.H. Biocompatibility evaluation in vitro. Part II: Functional expression of human and animal osteoblasts on the biomaterials. J Cent. South Univ. Technol. 8, 75–82 (2001). https://doi.org/10.1007/s11771-001-0030-7
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DOI: https://doi.org/10.1007/s11771-001-0030-7