Figure 5

The effects of POH on the release of IL-8 in U251 cells. The cells were treated with 0.1% DMSO, POH (0.5 and 1.5 mM) or different positive controls (5 μg/mL LPS and 1 μM OUA) for 24 hours. An untreated control was also carried out. IL-8 detection was performed using an Enzyme-Linked Immunosorbent Assay (ELISA). The data were expressed as the means ± SD from at least three different experiments. **p < 0.01; ***p < 0.001 vs. control group (without treatment). ^†††p < 0.001 vs. control group (0.1% DMSO), analyzed by One-way ANOVA followed by Newman-Keuls test.