1 材料与方法
1.1 等离子体射流设备
1.2 HGFs的体外培养及CAP处理
1.3 HGFs培养液温度、酸碱度及活性氧含量检测
1.4 HGFs黏附形态检测
1.5 HGFs迁移能力检测
1.6 HGFs增殖能力检测
1.7 统计学分析方法
2 结果
2.1 CAP处理剂量
2.2 CAP处理后HGFs培养液温度、酸碱度及H2O2浓度变化
图2 对照组及CAP处理组细胞培养液中温度,pH及H2O2浓度Figure 2 Temperature, pH, and concentration of H2O2 in the cell culture medium of the control group and the CAP-treated groups CAP-0 s, CAP-20 s, CAP-60 s, CAP-120 s, and CAP-180 s represent no CAP treatment, CAP treatment for 20 s, 60 s, 120 s, and 180 s respectively. Differences in H2O2 concentration among groups are indicated by uppercase letters. Differences in pH among groups are indicated by lowercase letters. Different letters indicate that the difference between groups is statistically significant (P < 0.05). CAP, cold atmosphere plasma. |
2.3 CAP处理改变HGFs形态
图3 高内涵细胞成像系统观察对照组及CAP处理组HGFs形态(免疫荧光染色×20)Figure 3 Observation of HGFs' morphology in control and CAP-treated groups by high content analysis system (immunofluorescence staining ×20) A, no CAP treatment group; B, CAP treatment for 20 s group; C, CAP treatment for 60 s group; D, CAP treatment for 120 s group; E, CAP treatment for 180 s group. CAP, cold atmosphere plasma; HGFs, human gingival fibroblasts. |
图4 对照组及CAP处理组HGFs的表面积(A)及周长(B)Figure 4 Spreading area (A) and perimeter (B) of HGFs in the control and CAP-treated groups CAP-0 s, CAP-20 s, CAP-60 s, CAP-120 s and CAP-180 s represent no CAP treatment, CAP treatment for 20 s, 60 s, 120 s and 180 s respectively. Different lowercase letters indicate that the difference between groups is statistically significant (P < 0.05). CAP, cold atmosphere plasma; HGFs, human gingival fibroblasts. |
2.4 CAP处理改变HGFs迁移能力
图5 划痕制备后对照组及CAP处理组HGFs迁移图像Figure 5 Representative images of HGFs migration in the control and CAP-treated groups after scratch wounding CAP-0 s, CAP-20 s, CAP-60 s, CAP-120 s and CAP-180 s represent no CAP treatment, CAP treatment for 20 s, 60 s, 120 s and 180 s respectively. The initial wound boundaries (0 h) are outlined in blue. The migrated edges after 12 h and 24 h are outlined in yellow. CAP, cold atmosphere plasma; HGFs, human gingival fibroblasts. |
图6 不同剂量CAP处理后12 h(A)和24 h(B)HGFs的迁移能力Figure 6 Migratory ability of HGFs at 12 h (A) and 24 h (B) after treatment in control and CAP-treated groups CAP-0 s, CAP-20 s, CAP-60 s, CAP-120 s and CAP-180 s represent no CAP treatment, CAP treatment for 20 s, 60 s, 120 s and 180 s respectively. Different lowercase letters indicate that the difference between groups is statistically significant (P < 0.05). CAP, cold atmosphere plasma; HGFs, human gingival fibroblasts. |
2.5 CAP处理改变HGFs增殖能力
图7 对照组及CAP处理组HGFs培养24 h(A)、48 h(B)、72 h(C)细胞增殖能力(CCK-8)Figure 7 The proliferation ability of HGFs in the control and CAP-treated groups measured by CCK-8 assay after 24 h (A), 48 h (B) and 72 h (C) of culture CAP-0 s, CAP-20 s, CAP-60 s, CAP-120 s and CAP-180 s represent no CAP treatment, CAP treatment for 20 s, 60 s, 120 s and 180 s respectively. Different lowercase letters indicate that the difference between groups is statistically significant (P < 0.05). CAP, cold atmosphere plasma; HGFs, human gingival fibroblasts; CCK-8, cell counting kit 8. |
