1.河南中医药大学药学院(河南 郑州 450046)
直炜炜,女,在读硕士生,主要从事中药新剂型和新技术的研究
祝侠丽,教授,博士生导师;E-mail:zhuxiali1980@126.com
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直炜炜,王华华,王莎莎等.基于纳米氧化石墨烯的盐酸小檗碱温敏水凝胶体外释放度研究[J].上海中医药大学学报,2022,36(03):66-71.
ZHI Weiwei,WANG Huahua,WANG Shasha,et al.Study on in vitro release of berberine hydrochloride thermosensitive hydrogel based on nano graphene oxide[J].Academic Journal of Shanghai University of Traditional Chinese Medicine,2022,36(03):66-71.
直炜炜,王华华,王莎莎等.基于纳米氧化石墨烯的盐酸小檗碱温敏水凝胶体外释放度研究[J].上海中医药大学学报,2022,36(03):66-71. DOI: 10.16306/j.1008-861x.2022.03.011.
ZHI Weiwei,WANG Huahua,WANG Shasha,et al.Study on in vitro release of berberine hydrochloride thermosensitive hydrogel based on nano graphene oxide[J].Academic Journal of Shanghai University of Traditional Chinese Medicine,2022,36(03):66-71. DOI: 10.16306/j.1008-861x.2022.03.011.
目的,2,建立基于纳米氧化石墨烯的盐酸小檗碱温敏水凝胶(BH-NGO-gel)中盐酸小檗碱及其体外释放度的测定方法。,方法,2,采用高效液相色谱法,C,18,色谱柱(4.6 mm×250 mm, 5 μm);流动相乙腈-0.03 mol/L磷酸二氢钾(28∶72, v/v);检测波长350 nm;流速1 ml/min;柱温30 ℃;进样量10 μl。释放介质为含0.5%吐温80的0.1 mol/L磷酸盐缓冲液(PBS, pH 7.4),采用透析法分别于37 ℃和42 ℃条件下进行体外释放度试验,并采用DDSolver软件拟合药物释放模型。,结果,2,盐酸小檗碱的线性范围为2~20 μg/ml,高、中、低3个浓度的回收率均,>,95%,,RSD,均,<,2%。相比于盐酸小檗碱溶液,BH-NGO-gel释药速度明显较慢(,P,<,0.001);42 ℃释药速率高于37 ℃,但无明显统计学差异(,P,>,0.05)。BH-NGO-gel在37 ℃和42 ℃ 下的释药过程均符合Makoid-Banakar释药模型,相关系数,r,分别为0.993 6和0.986 9。,结论,2,建立的BH-NGO-gel中盐酸小檗碱体外释放度测定方法简便、可行。BH-NGO-gel具有明显的缓释作用,且具有温度依赖性的释药特征。
Objective: To establish a determination method for berberine hydrochloride and its ,in vitro, release of berberine hydrochloride thermosensitive hydrogel based on nano graphene oxide (BH-NGO-gel).,Methods,2,The high performance liquid chromatography method was used, performed on a C,18, column (4.6 mm × 250 mm, 5 μm) at a flow rate of 1 ml/min with mobile phase of acetonitrile-0.03 mol/L monobasic potassium phosphate (28∶72, v/v). The detection wavelength was 350 nm, the column temperature was 30 ℃ and the injection volume was 10 μl. The release medium was 0.1 mol/L phosphate buffer (PBS, pH 7.4) containing 0.5% Tween 80. The ,in vitro ,release tests were carried out by dialysis method at 37 ℃ and 42 ℃ respectively. And the kinetic model of drug release was analyzed by DDSolver software.,Results,2,The linear range of berberine hydrochloride was 2~20 μg/ml, and the recoveries of high, medium and low concentrations were all more than 95%, and, RSD, were all less than 2%. Compared with berberine hydrochloride solution, the drug release rate of BH-NGO-gel was significantly slower (,P,<,0.001), and the drug release rate at 42 ℃ was higher than that of 37 ℃, but there was no significant statistical difference (,P,>,0.05). The ,in vitro, release processes of BH-NGO-gel at 42 ℃ and 37 ℃ were all accorded with Makoid-Banakar model, and the correlation coefficients ,r, was 0.993 6 and 0.986 9, respectively.,Conclusion,2,The established method for determining berberine hydrochloride ,in vitro, release from BH-NGO-gel is simple and feasible. BH-NGO-gel had obvious sustained release effect and temperature dependent drug release characteristics.
盐酸小檗碱温敏水凝胶纳米氧化石墨烯体外释放度高效液相色谱法
berberine hydrochloridethermosensitive hydrogelnano graphene oxidein vitro releasehigh performance liquid chromatography
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