毛孔微球作为败血症治疗的病原体陷:捕获活性病原体并减轻炎症反应
Shifan Chen1, Jianxu Bao1, Zhen Hu2
1College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
ACS applied materials & interfaces
|April 29, 2024
概括
这项研究引入了由碳纳米管和聚氨制成的新型多孔微球来捕获活性病原体,提供了一种新的败血症治疗方法. 这种体外血液净化方法可以减少炎症性细胞因子的释放,从而更好地治疗败血症.
科学领域:
- 生物材料工程 生物材料工程
- 传染病治疗方法 传染病治疗方法
- 纳米技术 纳米技术
背景情况:
- 败血症是一种危及生命的系统性炎症反应感染.
- 目前的抗生素治疗可以导致病原体溶解,释放有害的病原体相关分子模式 (PAMPs).
- 这种PAMP释放会加剧炎症和败血症的严重程度.
研究的目的:
- 开发一种创新的败血症疗法,使用体外血液净化.
- 创建病原体捕获微球,避免病原体溶解.
- 为了减少PAMP释放和随后的炎症反应.
主要方法:
- 碳纳米管 (CNTs) 经过移植聚合,通过二甲基二甲基化 (DDA) 进行修饰.
- 带正电荷的CNT-DDA与聚氨 (PU) 混合.
- 电喷涂用于创建多孔PU-CNT-DDA微球 (2微米孔径) 用于病原体捕获.
主要成果:
- 在PU-CNT-DDA微球中,在50mL·min-1.1%的流速下,对大肠杆菌 (94.7%) 和黄金葡萄球菌 (98.8%) 的捕获效率很高.
- 该方法有效地捕获了活跃的病原体,而不会引起溶解.
- 这种方法显著减少了PAMP释放和促炎性细胞因子的产生.
结论:
- 有孔的PU-CNT-DDA微球在体外血液净化中作为有效的病原体陷.
- 这种血液输血策略通过捕获病原体和减轻炎症,为败血症提供了一条新的治疗途径.
- 该方法成功绕过了病原体溶解,从而控制了PAMP释放,并改善了败血症管理.
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