Add time:09/27/2019 Source:sciencedirect.com
Networks based on poly(2-hydroxyethyl methacrylate-co-3,9-divinyl-2,4,8,10-tetraoxaspiro [5.5]-undecane), synthesized through radical dispersion polymerization, were used as template for indomethacin (INN) as model drug. The copolymers were characterized by swelling studies at three pH values (2.4, 5.5 and 7.4) and two temperatures (room temperature 24 °C and physiological temperature 37 °C). Fourier transform infrared (FTIR) spectroscopic analysis was used to sustain the copolymer structures. Scanning electron microscopy (SEM) and thermogravimetric (TG) investigations were used to examine microstructure and appreciate the thermal stability of the polymer samples. The studies of the INN drug release from the copolymer networks were in vitro performed. The in vivo study results (biocompatibility tests, somatic nociceptive experimental model (tail flick test) and visceral nociceptive experimental model (writhing test)) are also reported in this paper.
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