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Article type: Research Article
Authors: Nordström, E.; | Ohgushi, H. | Yoshikawa, T. | Yokobori, Jr., A.T. | Yokobori, T.
Affiliations: School of Science and Engineering, Teikyo University, Utsunomiya 320, Japan | Department of Orthopaedic Surgery, Nara Medical University, Nara 634, Japan | Department of Mechatronics and Precision Engg, Tohoku University, Sendai 980, Japan
Note: [] Corresponding author: Egon Nordström, Åbo Akademi University, Faculty of Chemical Engineering, Laboratory of Inorganic Chemistry, Biskopsg. 8, FIN‐21500 Åbo, Finland. Tel.: +358 2 2154433; Fax: +358 2 2154962; E‐mail: egon. nordstrom @ abo. fi.
Abstract: In order to investigate the significance of hydroxyapatite based microporous composite (HA/mica composite) surfaces and a macroporous synthetic hydroxyapatite, rat marrow cell culture, which shows osteogenic differentiation, was carried out on six different culture substrata (two control culture dishes, two identical HA/mica composites, and two identical macroporous synthetic hydroxyapatites). A culture period of two weeks in the presence of \beta‐glycerophosphate (BGP), ascorbic acid, and dexamethasone resulted in abundant mineralized nodule formations that were positive for alkaline phosphatase (ALP) stain. The stain on the macroporous synthetic hydroxyapatite and the HA/mica composites were intense, the enzyme activity being about double that of control culture dishes. These data indicate that the synthetic macroporous hydroxyapatite surface and the HA/mica composite surface promotes osteoblastic differentiation.
Keywords: Hydroxy(l)apatite, ceramic composite, cell culture
Journal: Bio-Medical Materials and Engineering, vol. 9, no. 1, pp. 21-26, 1999
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