适应pH值和自我适应的可注射基酸盐/甲基基酸盐水凝通过细菌静止和免疫调节加速受感染的伤口愈合
Xi Zhang1, Yongzhe Liu1, Ziwei Wang1
1Department of Implantology & Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong 250012, China.
Carbohydrate polymers
|February 20, 2025
概括
这项研究开发了一种适应pH值的水凝,适应伤口形状,释放黄素来对抗感染和炎症. 水凝通过增强细胞迁移和组织重建,有效促进受感染的伤口愈合.
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.
- 伤口愈合 伤口愈合
背景情况:
- 受感染的伤口愈合面临着来自持续细菌和炎症的挑战.
- 适应微环境的水凝为感染伤口管理提供了一个有希望的策略.
研究的目的:
- 开发一种自我适应的,可注射的水凝,用于感染的伤口愈合.
- 为了研究黄素从水凝中释放的pH响应.
- 评估水凝的抗菌,抗炎和组织再生特性.
主要方法:
- 用Sr2+交叉链接剂制造甲基酸盐/甲基基酸盐水凝 (SCSC).
- 评估水凝的pH响应性黄素释放和自我适应性.
- 在实验室评估生物相容性,细胞迁移,氧化应激和炎症反应 (NF-κB通路,M2巨细胞极化).
- 在老鼠模型上的体内研究,以评估受感染的伤口愈合和再上皮化.
主要成果:
- 证实SCSC水凝具有pH响应的黄素释放和自我适应不规则的伤口形状.
- 水凝促进了细胞迁移,减少了氧化应激,并通过NF-κB通路抑制了炎症.
- SCSC水凝抑制了矩阵金属蛋白酶-9 (MMP-9) 表达,有助于细胞外矩阵 (ECM) 重建.
- 在体内实验显示,在用SCSC水凝治疗的受感染伤口中,重新上皮质化加速.
结论:
- 响应pH和自我适应的SCSC水凝显示出感染伤口管理的巨大潜力.
- 水凝的特性有助于细菌清除,减少炎症,促进组织再生.
- 这种生物材料提供了一种新的方法,可以加速复杂的受感染伤口的愈合.
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