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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

In vitro study of lysozyme in poly(lactide-co-glycolide) microspheres with sucrose acetate isobutyrate.

This study investigated the suitability of microsphere formulations for extended protein delivery and complete protein release. These microspheres were prepared by a multi-emulsion method and prepared using a mixture of poly(lactide-co-glycolide) (PLGA), RG 502H (lactide:glycolide=50:50, M(W) 9300) and sucrose acetate isobutyrate (SAIB). SAIB embedded into the microspheres and mixed with PLGA, improved the efficiency of enzyme encapsulation. The in vitro release rate of lysozyme (Lys) from the microspheres was reduced due to the high viscosity of the added SAIB and less degradation of PLGA by SAIB. These properties enabled prolonged release of Lys for up to 2 months, characterized by a minimal initial burst of Lys and nearly zero-order protein release kinetics result from co-administration of sorbitan monooleate 80. When it is considered that degradation products of SAIB are inactive for labile proteins, SAIB may be regarded as a promising candidate for long-acting protein delivery.[1]


  1. In vitro study of lysozyme in poly(lactide-co-glycolide) microspheres with sucrose acetate isobutyrate. Lee, E.S., Kwon, M.J., Lee, H., Na, K., Kim, J.J. European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences (2006) [Pubmed]
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