雷公藤甲素固体脂质纳米粒的制备及其抗慢性皮炎湿疹的作用研究
2021-02-22汪五清贺燕妮曾义斌张彤朱瑞政左付国
汪五清 贺燕妮 曾义斌 张彤 朱瑞政 左付国



摘 要 目的:制备雷公藤甲素固体脂质纳米粒(triptolide-solid lipid nanoparticles, TPL-SLN),并考察其抗慢性皮炎湿疹的作用。方法:以Compritol 888 ATO为油相、Tween 80为表面活性剂、大豆卵磷脂和Transcutol HP为助表面活性剂,通过处方筛选,制备TPL-SLN。以不同浓度的2,4-二硝基氯苯丙酮溶液为致敏剂和激发剂,建立小鼠耳部慢性皮炎湿疹模型,考察TPL-SLN对慢性湿疹造成的肿胀症状以及对血清中细胞因子分泌的影响。结果:本研究制备的TPL-SLN粒径为(90.69±1.82)nm,且分布均匀,能有效抑制小鼠皮炎湿疹造成的耳肿胀症状,可显著降低皮肤炎性因子IFN-g、IL-4的表达。结论:本研究制备的TPL-SLN能够有效改善小鼠皮炎湿疹症状,有望为雷公藤甲素治疗慢性皮炎湿疹提供一种新的给药策略。
关键词 雷公藤甲素 固体脂质纳米粒 纳米经皮给药系统 慢性皮炎湿疹
中图分类号:R979.5; R944.9 文献标志码:A 文章编号:1006-1533(2021)01-0014-05
*基金项目:上海市卫生局中医药科研基金项目(2012L073A)
Development of triptolide-solid lipid nanoparticles for treating chronic dermatitis eczema*
WANG Wuqing1**, HE Yanni1, ZENG Yibin1, ZHANG Tong1, ZHU Ruizheng1, ZUO Fuguo2***(1. Department of Dermatology, the Central Hospital of Minhang District, Shanghai 201100, China; 2. Department of Dermatology, East Hospital, School of Medicine, Tongji University, Shanghai 200120, China)
ABSTRACT Objective: To prepare triptolide-solid lipid nanoparticles (TPL-SLN) and investigate their effect on chronic dermatitis and eczema. Methods: Triptolide-solid lipid nanoparticles were prepared using Compritol 888 ATO as the oil phase, Tween 80 as the surfactant, soybean lecithin and Transcutol HP as the co-surfactant. A mice model with chronic ear dermatitis and eczema was established by sensitizing and stimulating using 2,4-dinitrochlorobenzene solution with different concentration to investigate their effect on swelling, skin redness and the serum concentrations of IFN-γ, IL-4 and IL-8. Results: The prepared TPL-SLN had a particle size of 90.69±1.82 nm and a uniform distribution, and could effectively inhibit the ear swelling, erythema and other symptoms caused by dermatitis and eczema in mice and significantly reduce the expression of skin inflammatory factors IFN- and IL-4. Conclusion: The TPL-SLN can effectively improve the symptoms of dermatitis and eczema in mice and is expected to provide a new delivery strategy for triptolide for the treatment of chronic dermatitis and eczema.
KEy WORDS triptolide; solid lipid nanoparticles; nano transdermal drug delivery system; chronic dermatitis eczema
雷公藤甲素(triptolide,TPL)是中藥雷公藤的主要活性成分,具有抗炎、镇痛、免疫调节、抗肿瘤等理化性质,常用于皮肤湿疹、类风湿性关节炎、免疫性疾病及恶性肿瘤等[1-2]。目前上市的雷公藤制剂有雷公藤片、昆仙胶囊、雷公藤多苷片、昆明山海棠片等,但雷公藤的传统口服制剂存在半衰期(t1/2)短、生物利用度低、不良反应大等问题[3]。而经皮给药制剂具有避免肝脏“首过效应”、延长药物t1/2、降低药物不良反应等特点,因此,将雷公藤甲素制备成外用制剂是提高局部药物浓度、降低不良作用的重要途径。
皮肤对药物的屏障作用是阻碍外用制剂发挥疗效的重要因素,而将药物制备成纳米制剂是采用制剂方法促透皮的重要手段。……
