骨科植入物的离子银涂层可能会损害骨质分化和矿化
Michael G Kontakis1, Elin Carlsson1, Carlos Palo-Nieto1
1OrthoLab, The Rudbeck Laboratory, Department of Surgical Sciences/Orthopedics, Uppsala University, 75185 Uppsala, Sweden.
Experimental and therapeutic medicine
|January 31, 2025
概括
超过0.5 ppm的银离子度会对骨细胞分化和矿化产生负面影响. 较高的银离子水平 (1.0-1.5 ppm) 可能会干扰骨质生成过程,影响基因表达和骨形成.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科的研究研究.
- 细胞生物学 细胞生物学
背景情况:
- 银 (Ag) 具有抗微生物特性,导致其用于医疗器械涂层.
- 从骨科植入物中释放的银离子 (Ag+) 对骨质细胞的影响需要系统地调查.
研究的目的:
- 评估银离子度对人类介质干细胞 (hMSCs) 和人类骨质母细胞 (hOBs) 的分化和骨质形成的影响.
- 确定安全的银离子度值,用于在骨科应用中不受干扰的骨质分化和矿化.
主要方法:
- hMSC和hOB暴露于静态 (0-1.5 ppm) 和动态 (0-0.7 ppm) Ag+度.
- 在4周内评估细胞形态,性酸酶 (ALP) 活性,骨质基因表达 (COL1A1,COL1A2,ALPL) 和矿化.
主要成果:
- Ag+度≥0.5 ppm改变了hOB形态和减少了骨素表达.
- 在≥1ppm Ag+时hMSCs的矿化减少,在相同度下hOBs显著减少.
- 升高的Ag+没有影响ALP活性,基因表达变化是适度和短暂的.
结论:
- 在1.0至1.5ppm之间的Ag+度可能会通过改变基因表达来阻碍骨质分化和矿化.
- 只有高达0.5 ppm的Ag+度才能允许不受干扰的骨质分化和矿化.
- 这些发现对于设计植入物上的银涂层至关重要,用于无水泥的骨固定.
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