Physicochemical properties and percutaneous penetration of total flavonoids from Oxytropis falcata Bunge
-
摘要: 目的 考察镰形棘豆总黄酮的溶解度、表观油水分配系数等理化常数,研究其体外经皮渗透性能,为指导其经皮给药剂型设计和制备提供参考。 方法 采用紫外分光光度法测定镰形棘豆总黄酮在水及不同溶剂中的溶解度,同时测定其在正辛醇/水缓冲溶液中的P值,以大鼠离体皮肤为模型,采用双室渗透扩散装置考察其经皮渗透情况。 结果 镰形棘豆总黄酮在甲醇、乙醇及pH 5.0~7.4的磷酸盐缓冲液中溶解度较好。镰形棘豆总黄酮的P值与溶液pH有一定关系,当pH值在2.5~7.4时,随着pH值的增加,总黄酮的logP值逐渐减小且基本控制在0.38~1.34之间。24 h药物累积透过量为155.44 μg/cm2,时滞为(11.52±0.95)h。 结论 镰形棘豆总黄酮水溶性差,较易溶于甲醇、乙醇及pH 5.0~7.4的磷酸盐缓冲液,其皮肤透过性不高,累积透过率较低,且有一定的时滞,经皮给药剂型设计时需综合考虑以上特点。Abstract: Objective To investigate the physicochemical constants such as the solubility and the apparent oil-water partition coefficient of total flavonoids from Oxytropis falcata Bunge and study the in vitro percutaneous permeability for providing the reference for the design and preparation of transdermal drug formulations. Methods The solubility of total flavonoids from Oxytropis falcata Bunge in water and different solvents were determined by ultraviolet spectrophotometry. The apparent oil-water partition coefficient of n-octanol/water buffer solution was also determined. Percutaneous penetration of total flavonoids from Oxytropis falcata Bunge was investigated by a double-chamber osmotic diffusion device with rat isolated skin as a model. Results The total flavonoids from Oxytropis falcata Bunge had good solubility in methanol, ethanol and phosphate buffer at pH 5.0-7.4. The apparent oil-water partition coefficient(P) of total flavonoids from Oxytropis falcata Bunge had a certain relationship with the pH of the solution. At 2.5-7.4, the lgP value of total flavonoids decreased with increasing pH value and the lgP value is between 0.38 and 1.34. The cumulative amount of drug in 24 hours is 155.44 μg/cm2 and the time lag was (11.52±0.95) h. Conclusion The total flavonoids from Oxytropis falcata Bunge had poor water solubility, but were more soluble in ethanol, methanol and phosphate buffer at pH 5.0-7.4. The skin permeability was not high, and the cumulative transmittances was low with a time lag. The above characteristics should be considered comprehensively in the design of transdermal drug dosage forms.
-
[1] 魏学红,金莉.藏药镰形棘豆的研究进展[J].中国药理学通报,2010,26(11):1535-1538. [2] 陈锦珊,杨钦磊,刘晓玲,等.藏药镰形棘豆的化学成分、药理作用及毒理学研究进展[J].中国药房,2016,27(28):3945-3948. [3] 钱江,陈锦珊,胡永狮,等.镰形棘豆防晒霜对海训官兵日晒伤防护研究[J].东南国防医药,2012,14(2):105-107. [4] LOU C H,YANG G M,CAI H,et al.2',4'-Dihydroxychalcone-induced apoptosis of human gastric cancer MGC-803 cells via down-regulation of survivin mRNA[J].Toxicol In Vitro,2010,24(5):1333-1337. [5] LIN X F,CHEN K J,SHI H K,et al.Therapeutic effect and mechanism of Oxytropis falcata gel on deep second-degree burn in rats[J].Evid Based Complement Alternat Med,2017,2017:3729547. [6] 王艺红,蔡小辉,曾棋平,等.藏药镰形棘豆抗深Ⅱ度烧伤活性部位筛选[J].解放军药学学报,2018,34(1):11-14. [7] 曾棋平,王艺红,蔡小辉,等.星点设计-效应面法优化镰形棘豆总黄酮的提取工艺[J].中国药师,2017,20(5):801-804. [8] 蔡小辉,曾棋平,杨丽娜,等.正交法优化大孔树脂纯化镰形棘豆中总黄酮的工艺[J].解放军药学学报,2018,34(5):387-389. [9] 李俊生,吕佳佳,王兴慧,等.黄芩总黄酮及其单体的溶解性及体外经皮渗透性能研究[J].中草药,2014,45(2):200-207. [10] 乔建卫,裴广庆,刘向东,等.黄芩总黄酮溶解度和表观油水分配系数的测定[J].中国医院药学杂志,2013,33(24):2026-2028.
计量
- 文章访问数: 3740
- HTML全文浏览量: 462
- PDF下载量: 323
- 被引次数: 0