摘要
目的:制备木犀草素纳米结构脂质载体及其冻干粉,考察体外释放情况,并对其释药模型进行拟合。方法:热熔乳化超声法制备木犀草素纳米结构脂质载体,逐步考察药脂比、固液脂质比例、大豆磷脂和泊洛沙姆188比和表面活性剂总浓度等对包封率、载药量、粒径及Zeta电位的影响,采用正交试验得出木犀草素纳米结构脂质载体最佳处方,进一步制备成冻干粉并对体外释药模型进行拟合。扫描电镜观察纳米粒子形态,X射线粉末衍射法(XRPD)分析存在状态。结果:正交优化木犀草素纳米结构脂质载体的最佳处方的包封率为(77.62±1.51)%,载药量为(3.41±0.11)%,平均粒径为(167.91±6.44) nm,Zeta电位为(-27.7±2.6) mV,外观呈球形或椭圆形。木犀草素相纳米结构脂质载体冻干粉体外释药模型符合Weibull模型:lnln(1/1-Mt/M∞)=1.025 1lnt-4.600 4(r=0.987 5)。木犀草素以无定型状态包封于纳米结构脂质载体中。结论:木犀草素纳米结构脂质载体工艺重复性良好,值得进一步研究。
OBJECTIVE To prepare luteolin nanostructured lipid carrier and its lyophilized powder, investigate the in vitro release, and fit its drug release model.METHODS Luteolin nanostructured lipid carriers were prepared by hot melt emulsification phacoemulsification. The effects of drug-lipid ratio, solid-liquid lipid ratio, soybean phospholipid and Poloxamer 188 ratio and total surfactant concentration on entrapment efficiency, drug loading, particle size and zeta potential were gradually investigated. The optimal formulation of luteolin nanostructured lipid carriers was obtained by orthogonal test. The lyophilized powder was further prepared and the in vitro drug release model was fitted. The morphology of nanoparticles was observed by scanning electron microscopy, and the presence state was analyzed by X-ray powder diffraction(XRPD).RESULTS The encapsulation efficiency, drug loading, particle size and the Zeta potential of the optimal formulation of lutelin-nanostructured lipid carriers were(77.62±1.51) %,(3.41±0.11) %,(167.91±6.44) nm and(-27.7±2.6) mV, respectively. The appearance of nanostructured lipid carriers was round or ellipsoidal. The release of freeze-dried powder was in line with Weibull equation model: lnln(1/1-M_t/M_∞)=1.025 1 lnt-4.600 4(r=0.987 5). Luteolin was encapsulated in nanostructured lipid carrier as anamorphous form.CONCLUSION The preparation process of lutelin-nanostructured lipid carriers has a feature of good repeatability, which is worthy of further study.
作者
毛艳婷
马姝丽
白朝辉
郭锐税
郝海军
MAO Yan-ting;MA Shu-li;BAI Zao-hui;GUO Rui-shui;HAO Hai-jun(Children's Hospital Afiliar ted to Zhengzhou University,Henan Children's Hospital,Zhengz hou Children's Hospital,Henan Zhengz hou 450000,China;Technical Center.Shanghai Leiyunshang Pharmaceutical CO,.LTD.,Shanghai 201401,China)
出处
《中国医院药学杂志》
CAS
北大核心
2020年第23期2423-2429,共7页
Chinese Journal of Hospital Pharmacy
基金
2019年度河南省医学科技攻关计划联合共建项目(编号:LHGJ20190974)。
关键词
木犀草素
纳米结构脂质载体
冻干粉
体外释放
无定型
luteolin
nanostructured lipid carriers
freeze-dried powder
in vitro release
amorphous form