Research Article

Liposome-Encapsulated Bioactive Guttiferone E Exhibits Anti-Inflammatory Effect in Lipopolysaccharide-Stimulated MH-S Macrophages and Cytotoxicity against Human Cancer Cells

Figure 6

Detection of COX-1 and COX-2 activity in LPS-stimulated MH-S cell lysate treated with different concentrations of free guttiferone E and guttiferone E-liposomes. The positive control diclofenac (DCF) was used at 5 μM, and blank liposomes (blk) used as a vehicle control were tested at 20 μg/mL. One unit (U) of COX activity is the amount of enzyme that generates 1.0 μmol of resorufin per minute at pH 8.0 and 25°C. Data are the mean from three independent experiments. Dunnett’s multiple comparisons test using two-way ANOVA was performed: , , and for free guttiferone E versus guttiferone E-loaded liposomes.