基于细菌纤维素和银纳米颗粒的纳米复合材料改善了伤口愈合,但没有表现出有毒作用
Saulo Duarte Ozelin1, Tábata Rodrigues Esperandim1, Fernanda Gosuen Gonçalves Dias1
1University of Franca, Avenida Dr. Armando Salles de Oliveira, 201, 14404-600, Franca, São Paulo, Brazil.
Journal of pharmaceutical sciences
|April 14, 2024
概括
一种新的银纳米粒子和细菌纤维素纳米复合物 (AgBC) 显著加快了老鼠的伤口愈合. 这种AgBC带促进了伤口的快速收缩和原蛋白的产生,同时减少了微生物的生长和炎症,没有系统性毒性.
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.
- 纳米技术纳米技术
背景情况:
- 伤口愈合是一个复杂的生物过程,受各种因素的影响.
- 银纳米颗粒 (AgNP) 具有抗菌性质,而细菌纤维素 (BC) 薄膜提供生物相容的伤口带好处.
- 将AgNP与BC结合使用可能会提高伤口愈合效率.
研究的目的:
- 评估一种新型细菌纤维素-银纳米颗粒纳米复合物 (AgBC) 的伤口愈合活性,在Wistar汉诺威大鼠中.
- 评估AgBC对21天内伤口区域,微生物负载,组织病理学和原蛋白含量的影响.
- 为了确定AgBC纳米复合物的系统毒性.
主要方法:
- 在Wistar汉诺威大鼠中建立了一个伤口愈合模型.
- 动物接受了AgBC纳米复合材料的治疗,并对伤口愈合参数进行了21天的监测.
- 评估了组织病理学分析,微生物殖民地数量,原蛋白含量和毒性指标 (体重,摄入水量,血液标记物).
主要成果:
- 到第21天,AgBC治疗导致了明显的伤口收缩 (>97%).
- 在受伤后的前48小时内,观察到微生物殖民地显著减少.
- 组织学分析显示,原纤维增加,亡,血管生成和炎症减少,没有检测到全身毒性.
结论:
- AgBC纳米复合材料通过增强收缩和原沉积,有效促进伤口愈合.
- AgBC表现出强大的抗菌活性和有利的安全概况,最大限度地降低了银的毒性.
- 这种新的纳米复合材料放大了其组件的生物活动,提供了改进的伤口愈合治疗.
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