一个氧气供应策略用于用于结核细粒瘤病变的声动疗法,使用载有catalase的纳米平台
Can Hu1,2, Yan Qiu1,2, Jiajun Guo1,2
1State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
International journal of nanomedicine
|November 8, 2023
概括
这项研究开发了超声波介导的纳米颗粒用于结核病治疗,有效清除细菌并逆转颗粒瘤缺氧. 这种方法为耐火结核病感染提供了一种新的非侵入性策略.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 传染性疾病 传染性疾病
背景情况:
- 结核病 (TB) 仍然是一个全球性卫生挑战,结核病颗粒体的异质微环境使其复杂化.
- 颗粒瘤内的缺氧条件阻碍了对Mycobacterium结核病 (MTB) 的有效治疗.
研究的目的:
- 研究一种基于缺氧缓解的策略,与超声波相结合,以改善结核病治疗结果.
- 通过超声波介导评估levofloxacin和催化酶载荷纳米粒子 (LEV@CAT-NPs) 的治疗潜力.
主要方法:
- 使用双重乳化方法制造利沃素和加酶载荷的PLGA纳米颗粒 (LEV@CAT-NP).
- 评估纳米粒子特性,氧气生产,药物释放和生物安全性.
- 评估超声波介导LEV@CAT-NPs在皮下结核病粒瘤小鼠模型中的协同治疗效应.
主要成果:
- LEV@CAT-NPs展示了出色的氧气生产,生物安全性和生物相容性.
- 超声波介导的LEV@CAT-NP有效地减少了细菌,缓解了颗粒瘤缺氧,并减少了瘤区域和炎症细胞.
- 治疗降低了缺氧诱导因子1α (HIF-1α) 和血管内皮生长因子 (VEGF) 的调节,并减少了炎症性细胞因子.
结论:
- 协同治疗有效地根除了细菌感染,并逆转了结核颗粒瘤中缺氧微环境.
- 这种非侵入性方法对治疗耐火结核病感染有前途.
- 在感染性病变中调节缺氧是未来研究的潜在治疗点.
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