一种对ROS反应和清理水凝,用于术后预防腹部粘附
Tao Zhang1, Yanjuan Huang1, Yujun Gong1
1School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
Acta biomaterialia
|June 24, 2024
概括
这项研究开发了一种新型的水凝屏障,通过释放抗氧化剂和减少炎症来防止术后腹部粘附. 水凝具有出色的生物相容性,有效促进非粘附性伤口愈合.
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:
- 手术后腹部粘附 (PAA) 是腹部手术后的常见并发症,导致严重的健康问题.
- 目前的抗粘剂产品缺乏令人满意的有效性,需要开发先进的解决方案.
研究的目的:
- 为有效预防PAA开发一种反应性氧物种 (ROS) 响应和清理水凝屏障.
- 研究水凝的特性,包括凝性,机械强度,组织粘附性,生物相容性和抗粘附功效.
主要方法:
- 合成AHBC和PSC单体,然后通过动态共价乙和酸键制造双交联凝 (AHBC/PSC).
- 在体外 (机械,粘附,生物相容性) 和体内 (PAA预防,安全,保留) 评估了水凝的特性.
- 研究了对ROS反应的基酸 (CGA) 释放及其抗炎作用,以及硫酸贝他因 (SB) 在减少蛋白质和纤维细胞粘附中的作用.
主要成果:
- AHBC/PSC水凝表现出在位凝,合适的机械性能 (储存模量~1kPa,Tan δ~0.5),以及湿组织粘附性 (~2.3kPa).
- 水凝显示出良好的生物相容性,并通过调节炎症微环境和缓解纤维化,有效地预防PAA在体内.
- 释放的CGA清除了ROS,调节了巨细胞极化 (M1到M2),SB降低了蛋白质/纤维细胞粘附,有助于整体疗效.
结论:
- 开发的ROS响应和清理AHBC/PSC水凝为预防术后腹部粘附提供了有希望和方便的方法.
- 水凝能够调节炎症,氧化应激和纤维化,这有助于有效的无粘合性伤口愈合.
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