七叶一枝花-壳聚糖混合物作为义齿稳固剂的生物安全性及生物相容性研究

摘要

目的:评价七叶一枝花-壳聚糖混合物的生物安全性及生物相容性.方法:参照国家标准GB/T 16886.12-2005、YY/T 0279-1995及GBT16886.5-2003规定的方法,将七叶一枝花-壳聚糖混合物按0.1 g/ml的标准放入浸提介质中,37℃条件下、浸提24 h制备浸提液,采用口腔黏膜刺激试验、细胞毒性试验以及流式细胞术初步评价七叶一枝花-壳聚糖混合物的生物安全性及生物相容性.结果:金黄地鼠口腔黏膜与试样接触部位未见出血、肿胀,组织学观察未出现病理性改变,七叶一枝花-壳聚糖混合物无口腔黏膜刺激性;对L929细胞无细胞毒性;对L929细胞的周期及凋亡无显著影响.结论:初步认为七叶一枝花-壳聚糖混合物具有良好的生物安全性和生物相容性.%Objective:To study the biological safety and biocompatibility of the mixture of Paris polyphylla-chitosan.Methods:According to the GB/T 16886.12-2005 standard,YY/T 0279-1995 standard and GBT16886.5-2003 standard,samples were prepared and tested by oral mucous membrane irritation test,cytotoxicity test and flow cytometry.Results:No local response to the mixture of Paris polyphylla-chitosan was found,and the visual observation and pathological findings of oral mucosa were normal and similar to that of the control group.Therefore,the mixture of Paris polyphylla-chitosan had no irritation response to oral mucosa.The mixture of Paris polyphylla-chitosan showed no cytotoxicity to L929 cells,and did not affect the cycle distribution and apoptosis of L929 cells.Conclusion:The mixture of Paris polyphylla-chitosan has good bio-safety and biocompatibility.