摘要
目的:探讨富血小板纤维蛋白提取液(Platelet-rich fibrin extract,PRFe)对牙周膜成纤维细胞(Periodontal ligament cell PDLC)增殖、成骨分化的影响,以期为富血小板纤维蛋白在临床的应用提供理论基础。方法:实验分为实验组(P组)和对照组(D组),P组使用含PRFe的α-MEM成骨诱导培养液(10%胎牛血清、青霉素100mg/L、链霉素100mg/L、10-2mol/Lβ-甘油磷酸钠、10-7mol/L地塞米松、5mg/L抗坏血酸)培养细胞,D组则使用不含PRFe的α-MEM成骨诱导培养液。甲基噻唑基四唑(MTT)法测定1d、3d、5d的细胞增殖数;碱性磷酸酶(ALP)活性检测1d、3d、5d的成骨分化情况;荧光实时定量PCR测定Runx2 mRNA和OCN mRNA基因分别在3d、7d的表达。结果:MTT显示:随培养时间延长,细胞数量逐渐增加,在各时间点,P组细胞的吸光度值(1d:0.235±0.012,3d:0.270±0.014,5d:0.686±0.040)均明显高于D组(1d:0.201±0.011,3d:0.286±0.020,5d:0.426±0.024),差异有统计学意义(P<0.05)。ALP活性:随着培养时间延长而增加,P组的增加更为显著,在各时间点,P组的吸光度值(1d:0.124±0.018,3d:0.176±0.013,5d:0.361±0.021)均显著大于D组(1d:0.103±0.011,3d:0.123±0.012,5d:0.162±0.014),差异有统计学意义(P<0.05)。荧光实时定量PCR:随着培养时间延长,两组细胞的基因表达量逐渐增加,将D组3d时基因表达水平定义为1,进行组内标准化,P组细胞的Runx2和OCN基因表达量(3d时分别为1.751±0.136,1.510±0.129;7d时分别为2.287±0.165,2.103±0.042)显著高于D组(3d时两个基因均为1;7d时分别为:1.367±0.121,1.208±0.051),差异有统计学意义(P<0.05)。结论:PRFe能有效地促进牙周膜成纤维细胞的增殖活性及成骨分化。
Objective: To evaluate the effect of platelet-rich fibrin extract (PRFe) on proliferation and bone differentiation of Periodontal ligament cell. Methods: Trials are divided into the experimental group(P) and the control group(D), group P use the osteogenic induction α-MEM(10% FBS, penicillin100 mg/L, streptomycin100mg/L, 10-2mol/L sodium β-glycerophosphate, 10-7mol/L dexamethasone, 5mg/L vitamin C) containing PRFe, while group D just use the osteogenic induction α-MEM. MTT assay to detect the number of the osteoblasts at 1d, 3d, 5d;the activity of alkaline phosphatase(ALP) to detect the differen-tiation of osteoblast at 1d, 3d, 5d; mean while,the level of osteogenetic biomarkers Runx2 and OCN at 3d, 7d were quantified by real-time PCR. Results: MTT assay: At 1d, 3d, 5d, a significant increase of absorbance were showed in group P(1d: 0.235±0.012, 3d: 0.270±0.014, 5d: 0.686±0.040) than group D (1d:0.201 ±0.011, 3d: 0.286 ±0.020, 5d: 0.426 ±0.024)(P&lt;0.05). ALP activity: At 1d, 3d, 5d, the ab-sorbance of group P (1d:0.124 ±0.018,3d:0.176 ±0.013,5d:0.361 ±0.021)was significant higher than group D(1d:0.103±0.011,3d:0.123±0.012,5d:0.162±0.014)(p&lt;0.05). Realtime PCR: As the standard-ization in the group,the gene expression level of group D at 3d were defined as 1, the Runx2 and OCN gene expression in group P (Cfba1, 3d:1.751 ±0.136, 7d: 2.287 ±0.165; OCN, 3d:1.510 ±0.129, 7d:2.103 ±0.042) are larger than group D (Cfba1, 3d:1, 7d:1.367 ±0.121; OCN, 3d:1, 7d: 1.208 ±0.051) (P&lt;0.05). Conclusions: Our work confirmed that PRFe is useful in stimulating the proliferation and bone differentiation of Periodontal ligament cell.
出处
《中国口腔种植学杂志》
2014年第2期51-54,共4页
Chinese Journal of Oral Implantology
基金
烟台市科技发展计划项目
编号:2011245