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Phases of Wound Repair01:28

Phases of Wound Repair

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Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
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Fabricating a Kidney Cortex Extracellular Matrix-Derived Hydrogel
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基于原蛋白的水凝贴片促进脏伤口的修复.

Chen Cheng1, Zihao Fu2, Chi Zhang1

  • 1Institute of Engineering Medicine, The First Affiliated Hospital of Ningbo University, 59 Liuting Street, Haishu District, Ningbo, 315010, China. tibetcn@aliyun.com.

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概括

一种由原,聚烯酸和四分化奇托制成的新型水凝贴片为脏手术提供了改善的愈合效果. 这种生物粘合性贴片提供了强大的粘附性,停止出血,抗击感染,并在部分切除术后促进组织再生.

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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.
  • 手术创新 在外科创新.

背景情况:

  • 部分切除术是早期癌的首选治疗方法,但接会导致延长性缺血和不良愈合等并发症.
  • 目前的医疗粘合剂有局限性,包括湿粘度差和细胞毒性,需要先进的生物粘合剂.
  • 人们非常需要多功能生物粘合剂,这些生物粘合剂可以提供静血,伤口管理,抗感染和促进愈合的特性.

研究的目的:

  • 开发一种新型的多功能生物粘合性水凝贴片,用于治疗复杂的体器官伤口.
  • 通过 in situ 聚合,创建一个稳定的水凝贴片,整合鼠尾原蛋白 (Col),聚烯酸 (PAAc) 和四分化奇托 (QCS).
  • 为了评估贴片的机械特性,湿组织粘附性,抗菌活性和在部分切除模型中的疗效.

主要方法:

  • 将高纯度的老鼠尾巴原蛋白 (Col) 作为交叉连接的枢纽和支架,纳入聚烯酸 (PAAc) 和四分化酸盐 (QCS) 网络中.
  • 利用现场聚合,创建一个预先形成的,稳定的水凝贴片.
  • 在大鼠部分切除模型中评估了拉伸强度,平衡膨胀率,湿组织粘附性,体外抗菌活性和体内性能.

主要成果:

  • 优化的水凝贴片显示出高抗拉强度 (172.60 kPa) 和低平衡膨胀率 (53.87%) 的独特组合.
  • 实现了强大的湿组织粘附 (51.28 kPa),超过了临床基准,并表现出显著的体外抗菌性质.
  • 在体内研究显示出快速的血液静止,并促进了管的有序再生,由组织学和修复标记表达证实.

结论:

  • 开发的多功能生物粘合水凝贴片为复杂的体器官伤口管理提供了有前途的解决方案,特别是在部分切除术后.
  • 这种材料设计解了典型的冲突性质,如抗拉强度和膨胀,提供了强大的性能.
  • 该贴片的静血,抗感染和再生能力突出显示了其改善手术结果和患者康复的潜力.