应用化学 ›› 2025, Vol. 42 ›› Issue (8): 1105-1114.DOI: 10.19894/j.issn.1000-0518.250026

• 研究论文 • 上一篇    下一篇

布比卡因微乳凝胶制剂的研制及质量评价

邢梓鑫1, 马秀兰1, 刘哲鹏2, 傅鹏琨1, 宋慧荞1, 杨昳津1, 聂丽蓉1()   

  1. 1.上海理工大学健康科学与工程学院,上海 200093
    2.上海朋廷医药科技有限公司,上海 200093
  • 收稿日期:2025-01-24 接受日期:2025-05-27 出版日期:2025-08-01 发布日期:2025-08-11
  • 通讯作者: 聂丽蓉
  • 作者简介:第一联系人:共同第1作者
  • 基金资助:
    国家自然科学基金面上项目(32372307)

Preparation and Quality Evaluation of Bupivacaine Microemulsion Gel

Zi-Xin XING1, Xiu-Lan MA1, Zhe-Peng LIU2, Peng-Kun FU1, Hui-Qiao SONG1, Yi-Jin YANG1, Li-Rong NIE1()   

  1. 1.School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China
    2.Shanghai PengTing Pharmaceutical Technology Co. ,Ltd. ,Shanghai 200093,China
  • Received:2025-01-24 Accepted:2025-05-27 Published:2025-08-01 Online:2025-08-11
  • Contact: Li-Rong NIE
  • About author:l.r.nie@usst.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(32372307)

摘要:

布比卡因属酰胺类局麻药,麻醉效果较强。 但因其半衰期短,单次注射镇痛时效有限,增加剂量易引发不良反应,持续小剂量输注又会加重患者不适与医护负担,限制了其临床应用。 针对上述问题,采用自发乳化法制备布比卡因微乳,并以羟丙基甲基纤维素(HPMC)为凝胶基质制备了一种适用于经皮给药途径的布比卡因微乳凝胶。 以粒径和载药量等理化指标优化微乳凝胶的处方工艺,并开展药效学研究。 结果显示,微乳凝胶的最优处方为: 药用大豆油-Tween 80-Span 80-无水乙醇-水相比为9∶10.5∶4.5∶10∶66(体积比); HPMC质量分数为0.4%。 优化后的微乳粒径为(64.58±0.29) nm,聚合物分散性指数(PDI)为0.198±0.096,载药量为96.95 mg/g,黏度为(8.43±0.28) Pa·s,pH值为7.49,稳定性良好,透射电子显微镜显示微乳呈球状形态。 与游离药物相比,微乳和微乳凝胶的经皮渗透量显著提高,且微乳凝胶能延长小鼠痛阈值,对皮肤无刺激性。 布比卡因微乳凝胶制备工艺简便可控,成品稳定、铺展性优且无刺激性,预期有良好的临床应用前景。

关键词: 布比卡因, 伪三元相图, 微乳凝胶, 局部麻醉, 质量评价

Abstract:

Bupivacaine is an amide-type local anesthetic with strong anesthetic effect. However, due to its short half-life, single injection analgesic time is limited, increasing the dose is easy to cause adverse reactions, and continuous small-dose infusion will aggravate the patient's discomfort and the burden of medical care, which limits its clinical application. To address the above problems, bupivacaine microemulsion was prepared by spontaneous emulsification, and a bupivacaine microemulsion gel for transdermal route of administration was prepared using hydroxypropyl methyl cellulose (HPMC) as the gel matrix. The prescription process of the microemulsion gel was optimized in terms of particle size, drug loading capacity and other physicochemical indexes, and a pharmacodynamic study was carried out. The results showed that the optimal prescription of the microemulsion gel was: pharmaceutical soybean oil-Tween 80-Span 80-anhydrous ethanol-water phase ratio of 9∶10.5∶4.5∶10∶66; HPMC mass fraction of 0.4%. The optimized microemulsion had a particle size of (64.58±0.29) nm, a PDI of 0.198±0.096, a drug loading capacity of 96.95 mg/g, a viscosity of (8.43±0.28) Pa·s, a pH value of 7.49, a good stability, and a spherical morphology as shown by transmission electron microscopy. The transdermal penetration of the microemulsion and microemulsion gel was significantly higher compared with the free drug, and the microemulsion gel prolonged the pain threshold in mice without skin irritation. Bupivacaine microemulsion gel is easy and controllable to prepare, and the finished product is stable, excellent spreading and non-irritating, so it is expected to have a good prospect for clinical application.

Key words: Bupivacaine, Pseudoternary phase diagram, Microemulsion gel, Local anesthesia, Quality evaluation

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