脂质组成和动动态对氧气微泡稳定性和氧气释放的影响
Kenta Kakiuchi1, Mark Andrew Borden1,2
1Biomedical Engineering Program, University of Colorado Boulder, Boulder, Colorado 80309, United States.
Langmuir : the ACS journal of surfaces and colloids
|January 15, 2025
概括
脂涂氧微气泡 (OMB) 具有出色的稳定性和快速释放氧气,在生物医学和其他应用中提供了增强氧气输送的潜力. 较长的乙链和特定的乳化剂提高了OMB的稳定性和性能.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 脂质涂层氧微气泡 (OMB) 正在探索低氧治疗和氧气输送.
- 在动态条件下了解OMB稳定性和氧气释放对于应用至关重要.
研究的目的:
- 为了研究不同脂质组成的OMB的稳定性.
- 量化评估在动态动下OMB分散的氧气释放情况.
- 引入一种用于测量氧气释放动态的新方法.
主要方法:
- 合成的OMB与不同的乙链脂 (DSPC,DBPC,DPPC) 和乳化剂 (二甲基PEG-PE,PEG-40酸盐).
- 在储存期间和稀释后评估OMB稳定性.
- 开发并使用了一种新方法来测量OMB分散混合后溶解氧度的变化.
- 在不同速度下评估氧气释放率.
主要成果:
- 具有较长乙链的OMB (DSPC,DBPC) 和二乙-PE乳化剂显示出增强的储存稳定性.
- 在30秒内释放超过330毫克/升的氧气.
- 氧气释放率和释放的氧气总量随着的速度而增加.
- 脂质外的透性影响了氧气释放率,对流是主要的运输机制.
结论:
- 特定的脂质成分增强氧气微气泡的稳定性.
- 在动态条件下,OMBs提供快速和大量的氧气释放,超过生理水平.
- 的速度显著影响氧气的释放,突出了质量运输在水环境中的作用.
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