克林霉素-PLGA微球的制备及其体外抑菌活性评价

doi:10.13481/j.1671-587x.20150118

吉林大学学报(医学版) ›› 2015, Vol. 41 ›› Issue (01): 94-98.doi: 10.13481/j.1671-587x.20150118

克林霉素-PLGA微球的制备及其体外抑菌活性评价

林涛¹, 李明贺¹, 郝颖², 毛济雄¹, 巴特¹, 韩成敏¹

1. 吉林大学口腔医院口腔颌面外科, 吉林长春 130021;
2. 汕头大学医学院第一附属医院药剂科, 广东汕头 515041

收稿日期:2014-04-14 发布日期:2015-01-30
通讯作者: 韩成敏,教授,硕士研究生导师(Tel:0431-85579361,E-mail:han_cm@sohu.com) E-mail:han_cm@sohu.com
作者简介:林涛(1985-),男,吉林省长春市人,住院医师,医学硕士,主要从事口腔颌面外科的基础和临床研究。
基金资助:
吉林省科技厅科技发展计划项目资助课题(20131012)

Preparation of clindamycin-loaded PLGA microspheres and evaluation on its in vitro antibacterial activity

LIN Tao¹, LI Minghe¹, HAO Ying², MAO Jixiong¹, BA Te¹, HAN Chengmin¹

1. Department of Maxillofacial Surgery, Stomatology Hospital, Jilin University, Changchun 130021, China;
2. Department of Pharmacy, First Affiliated Hospital, Medical College, Shantou University, Shantou 515041, China

Received:2014-04-14 Published:2015-01-30

摘要/Abstract

摘要：

目的: 制备出一种具有生物可降解性的搭载克林霉素的聚乳酸-羟基乙酸共聚物(PLGA)缓释微球,并对其相关性质进行研究。方法: 采用乳化-溶剂挥发法制备搭载克林霉素的PLGA微球,检测克林霉素-PLGA微球表面形貌和粒径分布,观察PLGA/二氯甲烷(P/D)与PLGA/克林霉素(P/C)不同投药比对微球包封率的影响;用适量的释放介质分散缓释微球后,37℃ 震荡,取各时间点的药液,采用K-B纸片琼脂扩散法检测不同时间点的抑菌环直径大小评价微球体外缓释抑菌能力。结果: 微球的形体圆整、表面光滑、无明显黏连,且粒径大小主要集中在700 nm左右。当投药比为P/D=80/1、P/C=5/1时包封率最佳,为45.02%,包覆效果良好。微球在第 1~2天时体外抑菌效果最为明显,第3~19天呈现持续稳定的抑菌效果,在第20天时降至药物的最小抑菌浓度(MIC)。结论: 克林霉素-PLGA微球的制备工艺良好,其体外抑菌效果表现出明显的缓释性。

关键词: 克林霉素, 聚乳酸-羟基乙酸共聚物, 微球, 抑菌活性, 缓释

Abstract:

Objective To prepare the clindamycin-loaded sustained release microspheres with poly (lactic-co-glycolic acid) (PLGA) which have good biodegradability, and to investigate its related properties. Methods The clindamycin-loaded PLGA microsheres were prepared by emulsion-solvent evaporation method. Then the morphology and particle size distribution of clindamylin-PLGA microsheres were detected. And two factors affecting entrapment rate of microspheres, including the rate of PLGA/dichloromethane(P/D) and PLGA/clindamycin (P/C), were investigated.In addition, the clindamycin-PLGA was dispersed in dissolve medium and oscillated at 37℃.Then the solution at different time was taken.Kirby-Bauer method was used to observe the ability of bacteriostasis by measuring the bacteriostatic ring size at different time. Results The acquired PLGA microspheres containing drugs exhibited well-defined properties, with the even and uniform sphere in appearance, general particles without adhesion, at the mean diameter of 700 nm mostly. The optimal ratio of P/D was 80/1 and P/C was 5/1, and the entrapment rate obtained was 45.02%.Moreover the antibacterial effect was very obvious on the initial release, followed by a prolonged release from days 3 to 19.The minimum inhibitory concentration (MIC) was reached on day 20. Conclusion Clindamycin-PLGA microspheres with good morphology and high encapsulation efficiency can be obtained using optimized formulation.The microspheres have a good antimicrobial effect in vivo through a long period of sustained release of drugs.

Key words: clindamycin, poly (lactic-co-glycolic acid), microspheres, antibacterial activity, sustained release

中图分类号:

R782.3

林涛, 李明贺, 郝颖, 毛济雄, 巴特, 韩成敏. 克林霉素-PLGA微球的制备及其体外抑菌活性评价[J]. 吉林大学学报(医学版), 2015, 41(01): 94-98.

LIN Tao, LI Minghe, HAO Ying, MAO Jixiong, BA Te, HAN Chengmin. Preparation of clindamycin-loaded PLGA microspheres and evaluation on its in vitro antibacterial activity[J]. Journal of Jilin University Medicine Edition, 2015, 41(01): 94-98.

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克林霉素-PLGA微球的制备及其体外抑菌活性评价

Preparation of clindamycin-loaded PLGA microspheres and evaluation on its in vitro antibacterial activity

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