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- W2085706373 abstract "The aim of this study was a better understanding of the regulation mechanisms of in vitro osteoblast activity on biomaterials. Rat osteoblast behaviour on different surfaces was studied. Surfaces with different roughness (and a similar surface chemistry) or with different surface chemistry (and a similar roughness) were compared. Cellular morphology was observed by scanning electron microscopy and cell adhesion was quantified using an image analysis system. Osteoblast proliferation was quantified by a MTT test and total protein content and alkaline phosphatase (ALP) activity were evaluated by spectrophotometry. Data were compared by statistical analysis. Results showed that NiTi surface roughness did not influence osteoblasts morphology, adhesion, total protein content and ALP activity whereas it modulated cell proliferation. Roughness was shown to stimulate cell proliferation. For smooth surfaces exhibiting two different chemical compositions, adhesion rate was found to be higher on Thermanox® than on NiTi whereas proliferation was shown to be smaller. ALP activity was also modulated by surface chemistry. Thus, cell adhesion and ALP activity were found to be more governed by surface chemistry than by roughness whereas cell proliferation was shown to be modulated by roughness (this effect increasing during cell culture) and by chemistry (this effect remaining stable in time) together. Total protein content and cell morphology were found to be independent of both parameters (roughness and chemistry). Effects of surface chemistry were discussed in terms of wettability and electron acceptor/donor properties of the surfaces of interest. Immunofluorescence images of adhesion proteins could not demonstrate differences between the three surfaces." @default.
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- W2085706373 date "2008-07-01" @default.
- W2085706373 modified "2023-10-12" @default.
- W2085706373 title "Biomaterial surface properties modulate in vitro rat calvaria osteoblasts response: Roughness and or chemistry?" @default.
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- W2085706373 doi "https://doi.org/10.1016/j.msec.2007.10.085" @default.
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