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Development of specific organ-targeting drug delivery system I: Physico-pharmaceutical characteristics of thermally denatured albumin microspheres containing cytarabine

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Abstract

In attempt to develop a drug delivery system using serum albumin microspheres, bovine serum albumin microspheres containing antitumor agent, cytarabine, were prepared. The shape, surface characteristics, size distribution, behavior ofin vitro distribution, drug release behavior, and degradation of albumin microspheres in animal liver tissue homogenate and proteolytic enzyme were investigated.

The shape of albumin microspheres was spherical and the surface was smooth and compact. The size distribution of the albumin microspheres was affected by dispersion forces during emulsification and albumin concentration. Distribution of albumin microspheres after intravenous administration in rabbit was achieved immediately.In vitro, albumin microsphere matrix was so hard that it retained most of cytarabine except initial burst during the first 10 minutes, and the level of drug release during the initial burst was affected by heating temperature, drug/albumin concentration ratio and size distribution. After drug release test, the morphology of albumin microspheres was not changed. Albumin microsphere matrix was degraded by the rabbit liver tissue homogenate and proteolytic enzyme. The degree of degradation was affected by heating temperature.

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Authors and Affiliations

  1. College of Pharmacy, Seoul National University, 151, Seoul, Korea

    Chong-Kook Kim, Eun Ju Jeong, Ji Sun Yang, Seung Hwan Kim & Yang Bae Kim

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  1. Chong-Kook Kim
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  2. Eun Ju Jeong
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  3. Ji Sun Yang
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  4. Seung Hwan Kim
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  5. Yang Bae Kim
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Kim, CK., Jeong, E.J., Yang, J.S. et al. Development of specific organ-targeting drug delivery system I: Physico-pharmaceutical characteristics of thermally denatured albumin microspheres containing cytarabine. Arch. Pharm. Res. 8, 159–168 (1985). https://doi.org/10.1007/BF02857041

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  • DOI: https://doi.org/10.1007/BF02857041

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