一种无溶剂的罗皮瓦卡因加载的复合水凝,由pH敏感小粒组装成,以及一种热敏的可注射水凝,用于长期局部麻醉
Taotao Li1, Mingzhen Cai2, Qianqian Qiao3
1Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, China.
这项研究开发了一种新的无溶剂可注射水凝,用于长期的术后疼痛缓解. 与现有治疗方法相比,新配方显著延长了有效止痛的持续时间.
科学领域:
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
- 疼痛管理 疼痛管理
背景情况:
- 术后疼痛管理面临的挑战是局部麻醉剂的短期使用.
- 现有的药物载体通常需要有机溶剂来装载,这引发了安全性和有效性的担忧.
- 开发无溶剂的方法,用于持续的局部麻醉,至关重要.
研究的目的:
- 创建一个生物相容,可生物降解和可注射的水凝,用于长期局部麻醉,使用无溶剂的过程.
- 为了提高ropivacaine的加载和持续释放,无需有机溶剂.
- 评估新型水凝系统在长期术后疼痛管理中的有效性.
主要方法:
- 通过pH诱导的化合成pH敏感的可生物降解的聚合物微粒用于ropivacaine (Rop-micelles).
- 使用无溶剂方法在热敏基中开发了Rop-micelles的可注射分散 (Rop-micelles@HPCH).
- 在小鼠坐骨神经模型中评估了体外药物释放动力学和体内止痛疗效.
主要成果:
- 在没有溶剂的过程中,成功形成了Rop-micelles和Rop-micelles@HPCH复合水凝.
- Rop-micelles@HPCH显示,与单独的小粒或水凝相比,罗皮瓦卡因释放显著持续.
- 在Rop-micelles@HPCH系统中,特别是用德克斯梅德托米丁,提供了长时间的止痛 (20.3-29.1小时),而不是自由的罗皮瓦卡因 (4.2小时) 和EXPAREL® (4-6小时).
结论:
- 一种新的,可注射的,无溶剂的复合水凝 (Rop-micelles@HPCH) 已成功开发,用于持续的局部麻醉.
- 该系统为有效的长期术后疼痛管理提供了一个有希望的策略,避免使用有机溶剂.
- 开发的水凝系统显示出作为当前局部麻醉持续时间治疗方法的优质替代品的潜力.
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