注入的化生物活性玻璃-酸水凝:对抗微生物和骨导平台的双重作用
Matteo Bergoglio1, Ziba Najmi2, Federica Ferla2
1Dipartimento Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
Polymers
|June 27, 2025
概括
用添加的生物活性玻璃增强的甲基化奇托水凝具有增强的机械强度,抗黄球菌的抗菌活性和抗炎性质. 这些先进的支架显示了组织工程应用的前景.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 材料化学 材料化学
背景情况:
- 基于酸盐的水凝因其生物相容性而被广泛用于组织工程.
- 提高机械性能和添加抗微生物/抗炎功能的奇托水凝仍然是一个挑战.
- 生物活性玻璃有可能提高脚手架的性能.
研究的目的:
- 开发紫外线固化甲基化基 (MCHIT) 水凝,其中包含化化化二氧化生物活性玻璃 (BG-Te-Sil).
- 评估开发的MCHIT/BG-Te-Sil脚手架的机械,抗微生物和骨传导性质.
- 评估组织工程复合水凝的细胞兼容性和抗炎潜力.
主要方法:
- 基托桑的甲化,然后进行紫外线固化,形成水凝.
- 在水凝矩阵中将化化的生物活性二氧化玻璃纳入水凝矩阵.
- 使用FTIR,光学,压力测试,抗菌检测,体外细胞相容性测试和氧化应激下基因表达分析进行表征.
主要成果:
- 甲化使得基托能够有效地进行交叉连接.
- 添加BG-Te-Sil显著增加了水凝的弹性模量,高达200%.
- 含有50%重量的BG-Te-Sil的水凝显示出对黄金葡萄球菌的显著抗菌活性,并在氧化应激下降低了促炎性基因表达.
- 实验室研究证实了人类骨髓中酶干细胞的持续活力和均分布.
结论:
- 经过UV治愈的MCHIT/BG-Te-Sil水凝显示出增强的机械稳定性,强大的抗菌疗效和显著的抗炎作用.
- 开发的复合支架保持了与间酶体干细胞的良好细胞兼容性.
- 这些发现凸显了MCHIT/BG-Te-Sil水凝作为组织工程应用的先进生物材料的潜力.
相关概念视频
01:18Surface Membrane Barriers
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
01:29Biofilms
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...