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- W2093760761 abstract "Different kinds of polymers have been employed in medicine as biomaterials for different purposes. In recent years, considerable attention has been focused on the development of new drug-delivery systems in order to increase bio-availability, sustain, localize and target drug action in the human body. The versatility of the sol-gel processing to synthesize nanostructured materials and the possibility of incorporating organic molecules into the matrix of the final hybrid material, represent a novel and attractive path to the synthesis of new functionalized hybrid biomaterials with advanced properties. In this work, acetylsalicylic acid (ASA)-functionalized hybrid microspheres based on bridged silsesquioxanes synthesized via ultrasound-assisted sol-gel processing, were characterized. An investigation concerning the cytotoxic response of these new microspheres on CHO-K1 cells was accomplished based on ISO 10993-5 standard (Biological Evaluation of Medical Devices). Microspheres incorporating ASA showed a cytotoxic effect when pure extracts of the microspheres were analyzed, however, they strongly diminished their cytotoxicity as the extracts were diluted. When a 10% concentration extract was employed, hybrid microspheres were shown to be non cytotoxic. These results are promising for considering these novel functionalized organic-inorganic microspheres as potential drug-carriers to be employed in drug delivery-related applications." @default.
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- W2093760761 date "2011-03-19" @default.
- W2093760761 modified "2023-10-08" @default.
- W2093760761 title "Functionalized bridged silsesquioxane-based nanostructured microspheres: ultrasound-assisted synthesis and in vitro cytotoxicity characterization" @default.
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- W2093760761 doi "https://doi.org/10.1007/s10856-011-4261-3" @default.
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