In vitro and in vivo release of gentamicin from biodegradable discs

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Pavan Kumar NaraharisettiChi-Hwa Wang

Abstract

Osteomyelitis is an infection of the bone and successful treatment involves the removal of the affected bone and the tissue by a surgical procedure following prolonged systemic and local antibiotic therapy for 4 to 6 weeks. The current local treatment is done by poly methyl methacrylate (PMMA) beads loaded with gentamicin and PMMA, being nondegradable, is to be removed by a second surgical procedure. The current study aims to develop a biodegradable composition that gives sustained release and hence reducing the need for a second surgery. Gentamicin-loaded discs were produced by compressing microparticle-gentamicin mixture obtained by spray drying a mixture of gentamicin in a solution of a biodegradable polymer. Different copolymers of poly (DL-lactic-co-glycolic acid) (PLGA) were used to study the effect of copolymer ratio and the hydrophilic-hydrophobic nature of the polymer. Theoretical drug loading up to 25% were studied and it was observed that 10% drug loading was optimum for gentamicin to be used as solid in spray drying. The results showed that about 60% of the drug is released in about 5 to 6 days and the remaining drug is released in about 30 days in total. An in vivo study was carried on rabbit femur and the local ar...Continue Reading

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Citations

Nov 28, 2007·Pharmaceutical Research·Reinhard Vehring
Apr 16, 2008·Antimicrobial Agents and Chemotherapy·Kyriaki KanellakopoulouHelen Giamarellou
May 29, 2014·Journal of Materials Science. Materials in Medicine·V CampanaG Logroscino
Nov 29, 2012·Connective Tissue Research·Li Yen ChongPo-Chun Chang
Apr 18, 2012·Journal of Controlled Release : Official Journal of the Controlled Release Society·Noam EmanuelYechezkel Barenholz
Oct 14, 2009·Biotechnology Progress·Joshua R PorterKetul C Popat
Jan 5, 2012·Journal of Spinal Disorders & Techniques·Ender A OfluogluEmel Erhan
Jul 14, 2013·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Tianyi WuMeidong Lang
Sep 9, 2008·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Xia LiJianlin Shi

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