吸入药物的粘合控制沉积和冲击动态在人工粘液覆盖的呼吸道:一个结合的实验计算研究
Mona Mohammadkhani1, Janusz Kozinski1, Leila Pakzad1
1Department of Chemical Engineering, Lakehead University, Thunder Bay, Canada.
International journal of pharmaceutics
|January 16, 2026
概括
慢性阻塞性肺病 (COPD) 中气道粘液湿度的改变增加了吸入器中的药物沉积. 了解这些气溶-粘液相互作用是优化患者肺部药物输送的关键.
科学领域:
- 肺部药物输送 肺部药物输送
- 生物医学工程 生物医学工程
- 呼吸系统医学 呼吸系统医学
背景情况:
- 肺部药物输送的优化取决于了解气溶-粘液相互作用,特别是在慢性阻塞性肺病 (COPD) 中.
- 慢性慢性肺炎显著改变粘液的组成,风质和表面特性,影响药物沉积.
- 粘液浸湿性,通过药物粘液接触角度评估,是一个关键参数.
研究的目的:
- 研究调节药物粘液接触角度对压力计量剂量吸入器 (pMDIs) 气溶沉积的影响.
- 在不同程度的粘液可湿性下模拟和分析气溶的行为,反映健康和COPD条件.
主要方法:
- 用人工肺部粘液涂覆的真实口模型的制造和表征.
- 使用体外下一代冲击器 (NGI) 数据对数值模型进行实验验证.
- 用不同的接触角度 (22.5°,40°,60°) 进行pMDIs的数值模拟,代表健康的和COPD的气道.
主要成果:
- 减少粘液的湿透性 (较高的接触角度,例如60°) 与健康的呼吸道 (22.5°) 相比,增加了大约13.4%的药物总体沉积.
- 口沉积对粘液的湿透性非常敏感;较低的界面张力增强了吸收,而较高的张力导致滴滴反弹和重新入.
- 这些发现突出了粘液在滴滴保留和沉积结果中的粘合作用.
结论:
- 疾病改变的粘液可湿性显著影响肺部药物输送中的气溶沉积模式.
- 控制药物粘液界面特征提供了一个潜在的策略,以提高气溶输送效率在受损的气道.
- 获得的机械洞察力可以为设计更有效的吸入器治疗COPD等呼吸系统疾病的设计提供信息.
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