基托为基础的多功能水凝具有生物粘合和抗氧化特性,用于有效的伤口血液静止
Yanbing Song1, Chaobo Liu1, Xia Xu2
1Shanghai Pudong Hospital, Fudan University, Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China.
Colloids and surfaces. B, Biointerfaces
|December 10, 2023
概括
一种新型的基托基水凝,结合多巴胺和聚乙烯基罗利,显示出快速的静血能力. 这种生物相容的材料显著减少了血液流失,并显示出用于伤口愈合的应用的希望.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 聚合物化学 聚合物化学
背景情况:
- 由于其生物相容性和模仿细胞外基质的能力,水凝越来越多地被用于生物医学应用.
- 基托桑基水凝具有独特的特性,但需要进一步的功能来提高性能.
研究的目的:
- 开发和评估一种用于快速血液静止的新型水凝系统.
- 为了研究设计的水凝的静血,胀,抗氧化和粘合性质.
主要方法:
- 通过使用多巴胺,四分化氨基化奇托 (QCS) 和聚烯立,合成了一种水凝.
- 在斯普拉格-道利老鼠尾巴截肢和肝脏出血模型中测试了静血疗效.
- 评估了胀比率,抗氧化特性和猪皮的粘附强度.
主要成果:
- 水凝表现出显著的止血特性,在尾巴截肢模型中减少了大约78%的血损失,在肝脏出血模型中减少了76%的血损失.
- 水凝在各种溶液中表现出高的膨胀比率,表明了排泄物吸收能力.
- 多巴胺赋予了抗氧化特性,水凝在潮湿条件下表现出良好的,可逆的粘附性 (12.23 ± 0.22 kPa至24.31 ± 0.55 kPa).
结论:
- 开发的多巴胺/QCS/聚乙烯罗立水凝是快速血液静止和伤口治疗的有希望的候选者.
- 它的生物相容性,膨胀能力,抗氧化特性和粘附性使其适合生物医学应用.
- 这项研究提出了一个新的策略,用于设计先进的基托基水凝.
相关概念视频
01:05Introduction to Hemostasis
Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
01:20Extrinsic and Intrinsic Pathways of Hemostasis
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...