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논문 기본 정보

자료유형
학위논문
저자정보

이주현 (한양대학교, 한양대학교 대학원)

지도교수
신흥수
발행연도
2015
저작권
한양대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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Fluoroquinolone antibiotics which have concentration-dependent killing effect and well-established-broad-spectrum are common treatments of infectious diseases resulting from many kinds of bacteria. In the treatment for antibiotics, however, there is serious problem that antibiotic resistance is a result from frequent and excessive administration of antibiotics. Therefore, it is important to minimize the risk of resistance of antibiotics and to maximize the efficacy of the drugs. The aim of this study is to develop intramuscular injectable polymeric microparticles which contain Marbofloxacin (MAR) that is a fluoroquinolone antibiotic for veterinary use and have high drug content and high loading efficiency along with controlled release. MAR loaded PLGA/Poloxamer(MARPP)microparticles were prepared by a Solid-in-Oil-in-Water Solvent Extraction Evaporation Method (S/O/W SEEM). The microparticles showed spherical shape with particle size around 80 ~ 120 μm. Drug loading efficiency was about 55 ~ 85 % (w/w) according to the amount of an added hydrophilic agent, Poloxamer. At in vitro drug release study, the significant increase in the rate of drug release was observed when the higher ratio of the blended Poloxamer to PLGA. For example, when the ratio of the Poloxamer increased from 0 to 0.17, the percentage of the released drug until 48 hours increased 40 to 100 %. These results indicate that MARB loaded PLGA/Poloxamermicroparticle made by S/O/W Solvent Extraction Evaporation Method is an improved type of drug delivery carrier for the treatment of fluoroquinolone antibiotics, which can reduce the number of doses and sustain high release rate for 2~3 days.

목차

1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Preparation of MARPP microparticles
2.3. Characterization of MARPP microparicles
2.3.1. Morphology and size of MARPP microparicles
2.3.2. Hydrophilicity of polymer matrix of MARPP microparticles
2.3.3. Thermogravimetric analysis of MARPP microparticles
2.3.4. Determination of drug contents and loading efficiency
2.3.5. In vitro drug release behavior of MARPP microparticles
2.3.6. In vitro antibacterial activity test of MARPP microparticles
3. Results and discussion
3.1. Characterization of MARPP microparticles
3.1.1. Morphology and size of MARPP microparicles
3.1.2. Hydrophilicity of the polymer matrix of MARPP microparticles
3.1.3. Thermogravimetric analysis of MARPP microparticles
3.1.4. Drug content and Loading efficiency of MARPP microparticles
3.1.5. In vitro drug release behavior of MARPP microparticles
3.1.6. In vitro antibacterial activity test of MARPP microparticles
4. Conclusions
5. References

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