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Synthesis, characterization and bioevaluation of irinotecan-collagen hybrid materials for biomedical applications as drug delivery systems in tumoral treatments

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Voicu G., Geanaliu R., Ghiţulică C., Ficai A., Grumezescu A., Bleotu C.
Open Chemistry
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2013
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vol. 11
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issue 12
2134-2143
EN
The purpose of the present study is the preparation and characterization of collagen/antitumor drug hybrids as drug delivery systems. Materials used for obtaining collagen-based drug delivery systems were collagen type I (Coll) as matrix and irinotecan (I) as hydrophilic active substances. After incorporation of I into Coll in differing ratios, the obtained hybrid materials (Coll/I) could be used according to our results as potential drug delivery systems in medicine for the topical (local) treatment of cancerous tissues or bone. The released amount of I varies with amount of Coll from hybrid materials: the higher, the slower the release amount of irinotecan transferred is in the first 6 hours. The in vitro citotoxicity demonstrates an antitumoral activity of the obtained hybrid materials and their potential use for biomedical applications as drug delivery systems in tumoral treatments. [...]
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Silica/lignosulfonate hybrid materials: Preparation and characterization

100%
Klapiszewski Ł., Zdarta J., Szatkowski T., Wysokowski M., Nowacka M., Szwarc-Rzepka K., Bartczak P., Siwińska-Stefańska K., Ehrlich H., Jesionowski T.
Open Chemistry
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2014
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vol. 12
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issue 6
719-735
EN
The research reported here concerns the synthesis, characterization and potential applications of silica/lignosulfonate hybrid materials. Three types of silica were used (Aerosil®200, Syloid®244 and hydrated silica), along with magnesium lignosulfonate. The effectiveness of the hybrid material synthesis methodology was confirmed indirectly, using Fourier transform infrared spectroscopy, elemental and colorimetric analysis. Dispersive-morphological analysis indicates that the products with the best properties were obtained using 10 parts by weight of magnesium lignosulfonate per 100 parts of Syloid®244 silica. The relatively high thermal stability recorded for the majority of the synthesized products indicates the potential use of this kind of a material as a polymer filler. Results indicating the high electrokinetic stability of the materials are also of great importance. Additionally, the very good porous structure properties indicate the potential use of silica/lignosulfonate systems as biosorbents of hazardous metal ions and harmful organic compounds.
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Studies of Poly(Acrylic Acid-co-Maleic Acid) Sodium Salt Intercalated Montmorillonite

75%
Grabowska B., Cukrowicz S., Kurleto-Kozioł Ż., Kaczmarska K., Drożyński D., Sitarz M., Bobrowski A., Grabowska B., Cukrowicz S., Kurleto-Kozioł Ż., Kaczmarska K., Drożyński D., Sitarz M., Bobrowski A.
Archives of Foundry Engineering
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2019
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vol. 19
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issue 4
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