Studies on biodegradation and release of gentamicin sulphate from interpenetrating network hydrogels based on poly(acrylic acid) and gelatin: in vitro and in vivo

Thumbnail Image
Date
2004
Authors
Changez, Mohammad
Koul, Veena
Krishna, B
Dinda, Amit Kumar
Choudhary, Veena
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Interpenetrating network hydrogels (IPNs) based on poly(acrylic acid) and gelatin (Ge) were evaluated for in vitro and in vivo biodegradation and in vivo release of gentamicin sulphate. In vitro and in vivo degradation studies demonstrated that with the increase of acrylic acid content in the polymer, the rate of degradation decreases, and a reverse phenomenon was observed with increasing Ge content in the hydrogel. The rate of in vivo degradation was much lower than in vitro degradation. Incorporation of gentamicin sulphate in hydrogel further reduces their degradation. In vitro and in vivo drug release profile showed a burst effect, followed by controlled release. Drug concentration was measured in the local skin tissue, blood serum, kidney, liver and spleen. The local skin tissue concentration of 50% and 100% gentamicin sulphate, loaded full IPNs (i.e., Ax-1 and Ax-2), was found to be higher (20±2 μg/g) than the minimum bactericidal concentration for Staphylococcus aureus (1.2 μg/g) and Pseudomonas aeruginosa (10 μg/g), respectively, for a study time of 60 days.
Description
Keywords
Hydrogel, Interpenetrating polymer network, Gentamicin sulphate, Biodegradation, Poly(acrylic acid), Gelatin
Citation
Collections