Research Paper Volume 12, Issue 8 pp 7056—7065

CO2 lattice laser reverses skin aging caused by UVB

Figure 2. CO2 lattice laser suppresses cell senescence induced by UVB. (A) Proliferation of fibroblasts treated with control, UVB, or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM;** P< 0.05 vs. control, ## P< 0.05 vs. UVB. (B) ELISA of ROS production in cells irradiated by control, UVB, or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM;** P< 0.05 vs. control, ## P< 0.05 vs. UVB. (C) ELISA of SOD in cells irradiated by control, UVB or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM;** P< 0.05 vs. control, ## P< 0.05 vs. UVB. (D) ELISA of MDA in cells irradiated by control, UVB or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM;** P< 0.05 vs. control, ## P< 0.05 vs. UVB (E) Cell cycle analyzed by flow cytometry after treatment with control, UVB or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM.** P< 0.05 vs. control, ## P< 0.05 vs. UVB. (F) Apoptosis was detected by Annexin V-PI after treatment with control, UVB or UVB and 6.25 mJ/cm2 CO2 Lattice Laser. Data are shown as mean ± SEM.** P< 0.05 vs. control, ## P< 0.05 vs. UVB. (G, H) Expression of SMAD3, CDK4, Bcl-2, and COL1 analyzed by western blotting and RT-PCR. Data are shown as mean ± SEM;** P< 0.05 vs. control, ## P< 0.05 vs. UVB.