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性结肠炎治疗的pH和氧化还原双响应纳米支架
Yijun Wu1, Jinfeng Song1, Xiaochen Wang1
1College of Pharmacy of Henan University, Kaifeng, 475004, Henan, China.
研究人员开发了一种新型的pH和氧化还原反应纳米,用于在结肠中持续释放5-氨酸 (5-ASA),改善性结肠炎治疗.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 胃肠病学 胃肠病学
背景情况:
- 性结肠炎的治疗需要改善药物输送到结肠.
- 目前的治疗方法面临的挑战是合规性和持续的药物释放.
- 向的结肠药物治疗可以提高疗效并减少全身副作用.
研究的目的:
- 开发一种新型的刺激响应纳米载体,用于针对性地将5-氨酸 (5-ASA) 输送到结肠.
- 为了在结肠环境中实现5-ASA的持续和受控释放.
- 评估开发的纳米支架治疗性结肠炎的疗效和安全性.
主要方法:
- 制造含有二硫化键 (HMSN-SS) 的中空半孔性纳米颗粒,装载有5-ASA.
- 用聚多巴胺 (PDA) 和奇托 (CS) 进行表面修饰,以创建5-ASA@HMSN-SS-PDA-CS (5-ASA@HSPC) 假药.
- 在不同的pH和氧化还原条件下进行体外释放研究.
- 在动物模型中进行体内药理动力学和药理动力学评估.
主要成果:
- 5-ASA@HSPC纳米体证明了pH和氧化还原反应药物释放.
- 素促进了结肠粘膜的粘附.
- 聚多巴胺分离和二硫化键裂解触发了结肠中5-ASA的释放.
- 在体外和体外研究证实了缓慢,稳定的结肠药物释放,具有出色的安全性.
结论:
- 开发的5-ASA@HSPC纳米储存器提供了一种有希望的方法,用于在结肠中提供有针对性和持续的5-ASA.
- 这种新型系统在改善性结肠炎治疗方面具有显著的潜力.
- 刺激反应性质确保局部药物作用,增强治疗遵守性和疗效.
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