Premium
Effect of the chemical composition of Ricinus communis polyurethane on rat bone marrow cell attachment, proliferation, and differentiation
Author(s) -
Beloti Márcio M.,
Hiraki Karen R. N.,
Barros Valdemar M. R.,
Rosa Adalberto L.
Publication year - 2002
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.10435
Subject(s) - alkaline phosphatase , cell growth , chemical composition , biocompatibility , calcium , materials science , cell , biochemistry , chemistry , biology , organic chemistry , enzyme
Alterations in the chemical composition of a polymer may be undertaken to improve its biological properties. The aim of this study was to investigate the in vitro biocompatibility of Ricinus communis polyurethane (RCP) with three different chemical compositions: RCPp (pure RCP), RCP+CaCO 3 , and RCP+Ca 3 (PO 4 ) 2 . Rat bone marrow cells were cultivated under conditions that allowed osteoblastic differentiation and were evaluated for cell attachment, cell proliferation, cell morphology, total protein content, alkaline phosphatase (ALP) activity, and bonelike nodule formation. For the evaluation of attachment, cells were cultured for 4 h. After 3 days, cell morphology was evaluated. Cell proliferation was evaluated after 7 and 14 days. Total protein content and ALP activity were evaluated after 14 days. For bonelike nodule formation, cells were cultured for 21 days. Data were compared with an analysis of variance and Duncan's multiple range test when appropriate. Cell attachment and ALP activity were not affected by RCP chemical composition. Proliferation, total protein content, and bonelike nodule formation were all affected by RCP chemical composition. These results suggest that initial cell events are not affected by RCP chemical composition, whereas RCPs blended with calcium carbonate or, better yet, calcium phosphate, by favoring events that promote matrix mineralization, are more biocompatible materials. © 2002 Wiley Periodicals, Inc. J Biomed Mater Res 64A: 171–176, 2003