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논문 기본 정보

자료유형
학술저널
저자정보
Duran, N. (Instituto de Quimica, Biological Chemistry Laboratory, Universidade Estadual de Campinas) Alvarenga, M.A. (Nucleo de Ciencias Ambientais, Biological Chemistry and Biotechnology Laboratory, Universidade de Mogi das Cruzes) Da Silva, E.C. (Nucleo de Ciencias Ambientais, Biological Chemistry and Biotechnology Laboratory, Universidade de Mogi das Cruzes) Melo, P.S. (Departamento de Bioquimica, Instituto de Biologia, Universidade Estadual de Campinas) Marcato, P.D. (Instituto de Quimica, Biological Chemistry Laboratory, Universidade Estadual de Campinas)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제31권 제11호
발행연도
2008.1
수록면
1,509 - 1,516 (8page)

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The aim of this study was the preparation of microparticles containing rifampicin using a biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) for oral administration produced by a bacteria. The poly(3-hydroxybutyrate-co-3-hydroxyvalerate) microparticles with and without rifampicin were prepared by the emulsification and solvent evaporation method, in which chloroform and polyvinyl alcohol are used as the solvent and emulsifier, respectively. Microparticles were obtained within a size range of $20-60{\mu}m$ by changing the initial poly(3-hydroxybutyrate-co-3-hydroxyvalerate), polyvinyl alcohol and rifampicin concentrations. An encapsulation efficiency value of 14% was obtained. The optimized total yield of 60% of the poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/ rifampicin was obtained. A load of 0.035 mg/1mg of PHBV was reached. Almost 90% of the drug loaded in the micro-particles was released after 24 h. The size, encapsulation efficiency and ribampicin release of the micro-particles varied as a function of the initial poly(3-hydroxybutyrate-co-3-hydroxyvalerate), polyvinyl alcohol and rifampicin concentrations. It was demonstrated that the microencapsulated rifampicin, although was not totally available in the medium, exhibited a similar inhibition value as free rifampicin at 24 h of incubation with S. aureus. Cytotoxicity assays demonstrated a reduction of the toxicity when rifampicin was microencapsulated in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) while maintaining its antibacterial activity.

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