Fig. 4.

Effects of PRF treatments on NAMPT expression and intracellular ROS in RAW264.7 cells. A, Correlation between cell viability and NAMPT expressions under PRF treatments; B, Intracellular ROS levels in cells receiving PRF treatments: a–c represent PRF-treated cells at 0, 10 and 40 μg/mL respectively, d represents PRF (40 μg/mL) + NMN cotreated cells; C, NAC suppressed NAMPT expression increase induced by intense PRF treatment (40 μg/mL); D, PRF (10 μg/mL) reduced LPS-induced intracellular ROS accumulation.