Effect of salvianolic acid A (
SAA
) on lipopolysaccharide (
LPS
)‐induced production of TNF α, IL‐1β and IL‐6. Cells were treated with 1 μg/ml LPS alone or LPS plus different concentrations of SAA (125, 250 and 500 μm) for 24 h, and levels of TNF α (a), IL‐1β (b) and IL‐6 (c) were measured by ELISA. Data are presented as mean ± SD of three independent experiments, a
P < 0.01, b
P < 0.01 versus LPS group. Con, control.