Figure 4.
Effects of ethyl acetate (EtOAc) fraction of Papaver nudicaule orange (NO-Fr), Papaver nudicaule scarlet (NS-Fr), and Papaver rhoeas red (RA-Fr) on the STAT3 and NF-κB signaling pathways. (a,b) Expression and phosphorylation of STAT3 and NF-κB were examined by western blotting in RAW264.7 cells treated as indicated. (c) Expression levels of p-STAT3 were normalized to the STAT3 protein levels. (d) Expression levels of p-IκBα and p-p65 were normalized to the IκBα and p65 protein levels, respectively. Data are shown as mean ± standard deviation (SD). * p < 0.05, ** p < 0.01 and *** p < 0.001 imply statistically significant differences compared with the LPS only treated group.