摘要
目的 探讨新型纳米羟磷灰石 聚酰胺66复合生物材料(nHA_PA66)对牙髓细胞的生物学作用。方法 采 用细胞培养技术、倒置显微镜观察、四唑盐比色法(MTT)、流式细胞术、碱性磷酸酶活性检测和实时定量RT_PCR (QRT_PCR)等实验技术及方法,从细胞分子水平研究nHA_PA66对体外培养的人牙髓细胞生长及功能的影响。结果 牙髓细胞在nHA_PA66浸提液作用下,细胞外形无明显改变;nHA_PA66对牙髓细胞增殖、细胞周期、碱性磷酸酶 活性及牙本质涎磷蛋白(DSPP)mRNA的表达无明显促进或抑制作用。结论 nHA_PA66作为一种新型纳米生物材 料,对牙髓细胞的生长和功能无不良影响,有较好的生物相容性,但未见到明显的细胞生物活性作用。
Objective To investigate the biological effects of the new nano-hydroxyapatite/polyamide 66 biological composites (nHA-PA66) on the dental pulp cells.Methods After interaction with the nHA-PA66 eluate, the growth, proliferation, and function of the in vitro cultured human dental pulp cells were studied by cell culture technique, inverted phase-contrast microscope observation, MTT assay, flow cytometry, ALP activity assay and quantitative reverse transcriptase-polymerase chain reaction (QRT-PCR) analysis.Results The cultured pulp cells grew well and showed no morphological variation. Moreover, this material had no negative effects on the proliferation, cell cycle, ALP activity and the expression of dentin sialophosphoprotein (DSPP) mRNA of the pulp cells.Conclusion As a new nano-biomaterial, nHA-PA66 has good biocompatibility to the pulp cells, but no obvious bioactivity.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2005年第1期79-81,共3页
West China Journal of Stomatology
基金
四川省科委重点资助项目(02SG022_001)
